CN115228928B - Strip steel centering method, device, terminal equipment and storage medium - Google Patents

Abstract

The application is suitable for the technical field of strip steel production, and provides a strip steel centering method, a device, terminal equipment and a storage medium, wherein the method firstly acquires actual production parameters and strip steel images between two adjacent rolling mill frames in the strip steel production process, and comparing the actual production parameters with the standard production parameters to determine the deviation of the production parameters, comparing the strip steel image with the standard strip steel image to determine the deformation of the strip steel, and finally adjusting the setting parameters of the next rolling mill in the two adjacent rolling mills according to the deviation of the production parameters and the deformation of the strip steel. Therefore, actual production parameters and strip steel images between two adjacent rolling mill frames are subjected to comparison analysis, and the set parameters of the next rolling mill are preset in advance by combining the results of parameter comparison and image comparison, so that the strip steel is always kept at a centering position, and the probability of steel clamping, tail flicking accidents and wave defects is greatly reduced.

Description

Strip steel centering method, device, terminal equipment and storage medium

Technical Field

The application belongs to the technical field of automatic control, and particularly relates to a strip steel centering method, a strip steel centering device, terminal equipment and a storage medium.

Background

The traditional thin strip steel adopts a manufacturing process of hot rolling and cold rolling, and has long process flow, high energy consumption and high manufacturing cost. The CSP (Compact Strip Production, compact tropical production process) can be used for directly producing thin-specification strip steel, and is used for replacing cold-rolled products with the same strength and thickness, thereby realizing 'replacing cold with heat'. The method can greatly shorten the manufacturing flow, has obvious energy-saving and emission-reducing effects, and accords with the development direction of simplicity, high efficiency, green ecology in the steel industry.

In the related art, the main process of producing hot rolled strip steel by a CSP production line is as follows: roller-low heating furnace, fine descaling, finish rolling, multifunctional instrument, UFC (Ultra Fast Cooling, ultra-fast cooling), layer cooling, and coiling. Along with the rapid increase of the rolling speed of strip steel produced by a CSP production line, the traditional rolling method of 'wave-like leveling' and 'tongue-like' with the tail as much as possible is difficult to adapt to the rolling requirement of high speed and thin specification, and the problems of steel clamping, tail flick accidents, wave-like defects and the like are easy to occur.

Disclosure of Invention

The embodiment of the application provides a strip steel centering method, a strip steel centering device, a strip steel centering terminal device and a strip steel storage medium, which can solve the problems that the rolling speed of strip steel produced by a CSP production line is increased sharply, the strip steel is required to be rolled in a thin specification, and the strip steel is easy to be blocked, the tail is thrown out, the wave defect is easy to occur, and the like.

A first aspect of an embodiment of the present application provides a strip centering method, including:

in the strip steel production process, acquiring actual production parameters and strip steel images between two adjacent rolling mill stands;

comparing the actual production parameters with standard production parameters in a strip steel production database to determine the deviation of the production parameters;

comparing the strip steel image with a standard strip steel image to determine the deformation of the strip steel;

and adjusting the setting parameters of the next rolling mill in the two adjacent rolling mills according to the deviation of the production parameters and the deformation of the strip steel.

Optionally, the deviation of the production parameter includes at least one of deviation corresponding to the temperature difference between the head and the tail of the strip steel, deviation corresponding to the temperature difference between two sides of the strip steel, parameter deviation of the production water and thickness deviation of the strip steel.

Optionally, the actual production parameters include a strip head temperature and a strip tail temperature, and comparing the actual production parameters with standard production parameters in a strip production database to determine a deviation of the production parameters, including:

determining the head-tail temperature difference of the strip steel according to the head temperature of the strip steel and the tail temperature of the strip steel;

And determining the difference between the head-tail temperature difference of the strip steel and the head-tail temperature difference of the standard strip steel in the standard production parameters as the corresponding deviation of the head-tail temperature difference of the strip steel.

Optionally, the actual production parameters include temperatures of two sides of the strip steel, and comparing the actual production parameters with standard production parameters in a strip steel production database to determine a deviation of the production parameters, including:

According to the temperature of the two sides of the strip steel, determining the temperature difference of two sides of the strip steel;

and determining the difference between the temperature difference at two sides of the strip steel and the temperature difference at two sides of the standard strip steel in the standard production parameters as the corresponding deviation of the temperature difference at two sides of the strip steel.

Optionally, the actual production parameters include parameters of the production water; comparing the actual production parameters with standard production parameters in a strip steel production database to determine production parameter deviation, wherein the method comprises the following steps:

And determining the parameter deviation of the production water according to the parameter of the production water and the parameter of the standard production water in the standard production parameters.

Optionally, the production water comprises at least one of roller cooling water, roller gap lubricating water, dustproof water and anti-stripping water.

Optionally, the actual production parameters include strip thickness, and comparing the actual production parameters with standard production parameters in a strip production database to determine a deviation of the production parameters, including:

and determining the difference between the thickness of the strip steel and the thickness of the standard strip steel in the standard production parameters as the thickness deviation of the strip steel.

Optionally, the adjusting the setting parameters of the last rolling mill of the two adjacent rolling mills according to the deviation of the production parameters and the deformation of the strip steel includes:

And adjusting at least one parameter of roll shifting force, roll shifting amount, roll bending force, roll bending amount, water temperature of production water and water pressure of the production water of a rear rolling mill in two adjacent rolling mills according to the thickness deviation of the strip steel.

Optionally, the comparing the strip steel image with a standard strip steel image in a strip steel production database to determine a strip steel deformation amount includes:

extracting the characteristics of the strip steel image and determining an actual characteristic diagram;

extracting features of the standard strip steel image, and determining a standard feature map;

And comparing the actual characteristic diagram with the standard characteristic diagram to determine the deformation of the strip steel.

Optionally, the setting parameters include rolling force, and the adjusting the setting parameters of the last rolling mill of the two adjacent rolling mills according to the deviation of the production parameters and the deformation of the strip steel includes:

And if the deviation of the production parameters is larger than a preset deviation threshold, adjusting the rolling force of the next rolling mill in the two adjacent rolling mills.

Optionally, the setting parameters include at least one of water pressure of the process water and water quantity of the process water, and the adjusting the setting parameters of the last rolling mill of the two adjacent rolling mills according to the deviation of the process parameters and the deformation of the strip steel includes:

And if the deviation of the production parameters is larger than a preset deviation threshold, adjusting the water pressure of the production water and/or the water quantity of the production water of the next rolling mill in the two adjacent rolling mills.

Optionally, the setting parameters include rolling reduction, and the adjusting the setting parameters of the last rolling mill of the two adjacent rolling mills according to the deviation of the production parameters and the deformation of the strip steel includes:

and if the deviation of the production parameters is larger than a preset deviation threshold, adjusting the rolling reduction of the next rolling mill in the two adjacent rolling mills.

Optionally, after adjusting the setting parameters of the last rolling mill of the two adjacent rolling mills according to the deviation of the production parameters and the deformation of the strip steel, the method further comprises:

obtaining a rolling result of a later rolling mill in two adjacent rolling mills;

And updating standard production parameters in a strip steel production database according to the rolling result.

A second aspect of the embodiments of the present application provides a strip centering device, where the strip centering device includes:

the data acquisition module is used for acquiring actual production parameters and strip steel images between two adjacent rolling mill frames in the strip steel production process;

The deviation determining module is used for comparing the actual production parameters with standard production parameters in the strip steel production database to determine the deviation of the production parameters;

the deformation determining module is used for comparing the strip steel image with the standard strip steel image to determine the strip steel deformation;

and the adjusting model is used for adjusting the setting parameters of the next rolling mill in the two adjacent rolling mills according to the deviation of the production parameters and the deformation of the strip steel.

A third aspect of an embodiment of the present application provides a terminal device, including: the strip centering device comprises a memory, a processor and a computer program stored in the memory and capable of running on the processor, wherein the processor realizes the strip centering method in the first aspect when executing the computer program.

A fourth aspect of the embodiments of the present application provides a computer readable storage medium storing a computer program, which when executed by a processor, implements the strip centering method described in the first aspect.

A fifth aspect of an embodiment of the present application provides a computer program product, which when run on a terminal device causes the terminal device to perform the strip centering method according to the first aspect.

Compared with the prior art, the embodiment of the application has the beneficial effects that:

The application discloses a strip steel centering method, a device, terminal equipment and a storage medium, wherein the method firstly acquires actual production parameters and strip steel images between two adjacent rolling mill frames in the strip steel production process, then compares the actual production parameters with standard production parameters to determine production parameter deviation, compares the strip steel images with standard strip steel images to determine strip steel deformation, and finally adjusts setting parameters of a later rolling mill in the two adjacent rolling mills according to the production parameter deviation and the strip steel deformation. Therefore, the actual production parameters and strip steel images between two adjacent rolling mill frames are subjected to comparison analysis, and the set parameters of the next rolling mill are preset in advance by combining the results of parameter comparison and image comparison, so that the strip steel is always kept at the centering position, and the probability of steel clamping, tail flicking accidents and wave defects is greatly reduced.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments or the description of the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic view of an application scenario provided in an embodiment of the present application;

FIG. 2 is a schematic flow chart of a method for centering strip steel according to an embodiment of the present application;

FIG. 3 is a schematic flow chart of a strip steel centering method according to a second embodiment of the present application;

FIG. 4 is a schematic flow chart of a method for centering strip steel according to a third embodiment of the present application;

FIG. 5 is a schematic flow chart of a method for centering strip steel according to a fourth embodiment of the present application;

FIG. 6 is a schematic flow chart of a method for centering strip steel according to a fifth embodiment of the present application;

FIG. 7 is a schematic flow chart of a method for centering strip steel according to a sixth embodiment of the present application;

FIG. 8 is a schematic flow chart of a strip centering method according to a seventh embodiment of the present application;

FIG. 9 is a schematic flow chart of a method for centering strip steel according to an eighth embodiment of the present application;

FIG. 10 is a schematic flow chart of a method for centering strip steel according to a ninth embodiment of the present application;

FIG. 11 is a schematic flow chart of a method for centering strip steel according to a tenth embodiment of the present application;

FIG. 12 is a schematic structural view of a centering device for strip steel according to an eleventh embodiment of the present application;

Fig. 13 is a schematic structural diagram of a terminal device according to a twelfth embodiment of the present application.

Wherein, each reference sign in the figure:

1-strip steel; 2-a front frame; 3-a rear frame.

Detailed Description

In the following description, for purposes of explanation and not limitation, specific details are set forth such as the particular system architecture, techniques, etc., in order to provide a thorough understanding of the embodiments of the present application. It will be apparent, however, to one skilled in the art that the present application may be practiced in other embodiments that depart from these specific details. In other instances, detailed descriptions of well-known systems, devices, circuits, and methods are omitted so as not to obscure the description of the present application with unnecessary detail.

It should be understood that the terms "comprises" and/or "comprising," when used in this specification and the appended claims, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.

It should also be understood that the term "and/or" as used in the present specification and the appended claims refers to any and all possible combinations of one or more of the associated listed items, and includes such combinations.

As used in the present description and the appended claims, the term "if" may be interpreted as "when..once" or "in response to a determination" or "in response to detection" depending on the context. Similarly, the phrase "if a determination" or "if a [ described condition or event ] is detected" may be interpreted in the context of meaning "upon determination" or "in response to determination" or "upon detection of a [ described condition or event ]" or "in response to detection of a [ described condition or event ]".

Furthermore, the terms "first," "second," "third," and the like in the description of the present specification and in the appended claims, are used for distinguishing between descriptions and not necessarily for indicating or implying a relative importance.

Reference in the specification to "one embodiment" or "some embodiments" or the like means that a particular feature, structure, or characteristic described in connection with the embodiment is included in one or more embodiments of the application. Thus, appearances of the phrases "in one embodiment," "in some embodiments," "in other embodiments," and the like in the specification are not necessarily all referring to the same embodiment, but mean "one or more but not all embodiments" unless expressly specified otherwise. The terms "comprising," "including," "having," and variations thereof mean "including but not limited to," unless expressly specified otherwise.

It should be understood that, the sequence number of each step in this embodiment does not mean the execution sequence, and the execution sequence of each process should be determined by its function and internal logic, and should not limit the implementation process of the embodiment of the present application in any way.

In the related art, the rolling speed of strip steel produced by a CSP production line is increased sharply, and the problems of steel clamping, tail flick accidents, wave defects and the like are easy to occur due to the rolling requirement of thin strip steel.

In view of the above, the embodiment of the application provides a strip steel centering method, a device, a terminal device and a storage medium, and by comparing and analyzing actual production parameters and strip steel images between two adjacent rolling mill frames and combining the results of parameter comparison and image comparison, the setting parameters of the latter rolling mill are preset in advance, so that the strip steel is always kept at a centering position, and the probability of steel clamping, tail flicking accidents and wave defects is greatly reduced.

The following illustrates an application scenario of the strip centering method provided by the embodiment of the application, and the application can be applied to hot rolled strip steel production with the thickness of 1.2mm and below 1.0mm in a CSP production line, referring to fig. 1, in the process of rolling strip steel 1, a front stand 1 and a rear stand 2 are two adjacent rolling mill stands, and strip steel 1 firstly passes through the front stand 1 and then passes through the rear stand 2. The actual production parameters and strip steel images between the front stand 1 and the rear stand 2 are acquired, and then the strip steel centering method provided by the application is utilized to adjust the setting parameters of the rear rolling mill, namely the rear stand 2, in two adjacent rolling mills, so that the centering of strip steel is ensured in a prospective observation mode.

In order to illustrate the technical scheme of the application, the following description is given by specific examples.

Referring to fig. 2, a schematic flow chart of a strip steel centering method according to an embodiment of the application is shown. As shown in fig. 2, the strip centering method may include the steps of:

In step 201, during the strip production process, the actual production parameters and strip images between two adjacent rolling stands are acquired.

The actual production parameters can comprise one or more of the temperature of each point of the strip steel, the parameters of the production water, the thickness of the strip steel and the like. In actual use, the actual production parameters influencing the centering of the strip steel can be obtained according to the actual needs and specific application scenes, and the embodiment of the application is not limited to the actual production parameters.

As a possible implementation, the actual production parameters may include temperatures of various points of the strip, such as the strip head temperature, the strip tail temperature, the strip two sides temperature, and so on. The temperature of each point of the strip steel can be obtained through a temperature measuring instrument such as a thermometer and a thermometer.

As a possible implementation manner, the actual production parameters may also include parameters of production water, where the production water may include roll cooling water, roll gap lubricating water, dust-proof water, and peeling-proof water, etc. The roller cooling water can be used for reducing the surface temperature of the roller, reducing the thermal shock of the rolled material on the surface of the roller, reducing the generation of cracks, reducing the temperature difference between the inside and the outside of the roller, reducing the thermal stress of the roller and preventing the roller from breaking; the roll gap lubricating water can be used for reducing the friction coefficient, so that the rolling force is reduced, and the electricity consumption is also reduced; dust-proof water may refer to water used for dust removal during production; the stripping-preventing water falling can be used for preventing the oxide film on the surface of the roller from peeling off. The parameters of the production water can comprise the water pressure, the water quantity, the water temperature and the like of the production water, the water pressure and the water temperature of the production water can be obtained through instruments such as a pressure meter, a thermometer and the like, and the water quantity of the production water can be obtained through indirect calculation through measuring the flow rate of the water.

As a possible implementation, the actual production parameters may also include the thickness of the strip, which may be obtained by a thickness gauge.

As a possible implementation manner, since the shape of the strip steel can directly reflect whether the strip steel is abnormal or off-tracking, the strip steel shape can be extracted from the strip steel image by acquiring the strip steel image, so as to judge whether the current strip steel is abnormal or off-tracking according to the strip steel shape. In actual use, the strip steel image can be acquired by a video camera, a camera and other devices with image acquisition functions.

In the embodiment of the application, corresponding data acquisition equipment can be arranged between each rack and any two adjacent racks of the strip steel production line according to the type of the actual production parameters required to be acquired, and various actual production parameters and strip steel images are acquired so as to realize comprehensive analysis of centering factors of the strip steel through the actual production parameters and the strip steel images with multiple angles.

And 202, comparing the actual production parameters with standard production parameters in a strip steel production database to determine the deviation of the production parameters.

The strip steel production database comprises a series of standard data and basic data. The standard data can be determined by combining a large amount of basic data and each rolling result. The standard data can comprise the head-tail temperature difference of the standard strip steel, the temperature difference of two sides of the standard strip steel, the parameters of standard production water, the thickness of the standard strip steel and the like. The basic data can comprise steel grade and specification of strip steel, temperature system, rolling system, parameters of production water, parameters of roll gap lubrication, rolling mill stand number and the like of each working procedure point in the production process.

In the embodiment of the application, the production parameter deviation can comprise at least one of deviation corresponding to the head-tail temperature difference of the strip steel, deviation corresponding to the temperature difference of two sides of the strip steel, parameter deviation of production water and thickness deviation of the strip steel.

For example, when the actual production parameters are the head temperature and the tail temperature of the strip, the actual production parameters are compared with the head-tail temperature of the standard strip, so that the deviation of the production parameters is the deviation corresponding to the head-tail temperature of the strip. In practice, at least one actual production parameter may be analyzed to obtain at least one deviation of the production parameter.

And 203, comparing the strip steel image with a standard strip steel image to determine the deformation of the strip steel.

In the embodiment of the application, the characteristic point matching can be carried out on the strip steel image and the standard strip steel image by utilizing a machine vision method, the image comparison is completed, the strip steel deformation is determined, and whether the strip steel is centered or not can be intuitively judged by the image comparison mode.

And 204, adjusting the setting parameters of the next rolling mill in the two adjacent rolling mills according to the deviation of the production parameters and the deformation of the strip steel.

In the embodiment of the application, when the abnormal condition is observed manually and then the manual leveling is too late, the embodiment judges whether the production of the strip steel is abnormal according to the deviation of the production parameters and the deformation of the strip steel, and when the abnormality is found, the setting parameters of the subsequent rolling mill can be correspondingly pre-adjusted according to the determined deviation of the production parameters and the deformation of the strip steel so as to timely adjust the deformed strip steel through the subsequent rolling mill, thereby realizing prospective observation, striving for time for subsequent adjustment and greatly reducing the occurrence probability of the abnormal rolling of the strip steel.

According to the strip steel centering method disclosed by the embodiment of the application, the actual production parameters and strip steel images between two adjacent rolling mill frames in the strip steel production process can be obtained, then the actual production parameters are compared with the standard production parameters to determine the deviation of the production parameters, the strip steel images are compared with the standard strip steel images to determine the deformation of the strip steel, and finally the setting parameters of the next rolling mill in the two adjacent rolling mills are adjusted according to the deviation of the production parameters and the deformation of the strip steel. Therefore, the actual production parameters and strip steel images between two adjacent rolling mill frames are subjected to comparison analysis, and the set parameters of the next rolling mill are preset in advance by combining the results of parameter comparison and image comparison, so that the strip steel is always kept at the centering position, and the probability of steel clamping, tail flicking accidents and wave defects is greatly reduced.

Referring to fig. 3, a schematic flow chart of a strip steel centering method according to a second embodiment of the present application is shown. As shown in fig. 3, the strip centering method may include the steps of:

Step 301, acquiring actual production parameters and strip images between two adjacent rolling mill stands in the strip production process.

The specific implementation process and principle of the above step 301 may refer to the detailed description of the above embodiments, which is not repeated herein.

Step 302, determining the head-tail temperature difference of the strip steel according to the head temperature of the strip steel and the tail temperature of the strip steel.

As an example, the actual production parameters may include a strip head temperature and a strip tail temperature.

In the embodiment of the application, the higher the temperature is, the lower the deformation resistance of the metal is, and if the temperature difference between the head and the tail of the strip steel is too high, the metal is easy to deform. Therefore, in this embodiment, a temperature sensor may be disposed at a suitable position between two rolling mills to obtain a head temperature and a tail temperature of the strip steel between two adjacent rolling mills, and a difference between the head temperature and the tail temperature of the strip steel is determined as a head-tail temperature difference of the strip steel, so as to determine whether abnormal deformation of the strip steel is possible according to the head-tail temperature difference of the strip steel, so as to perform subsequent analysis.

And 303, determining the difference between the head-tail temperature difference of the strip steel and the head-tail temperature difference of the standard strip steel in the standard production parameters as the deviation corresponding to the head-tail temperature difference of the strip steel.

In the embodiment of the application, the lower the temperature difference between the head and the tail of the strip steel is, the better the temperature difference between the head and the tail of the strip steel is, but the actual condition and the cost are considered, the temperature difference between the head and the tail of the standard strip steel can be set between 20 ℃ and 40 ℃, for example, the temperature difference between the head and the tail of the standard strip steel is 30 ℃, namely, the head of the strip steel can be allowed to be more lower than the temperature difference between the head and the tail of the strip steel by 30 ℃, and if the deviation corresponding to the temperature difference between the head and the tail of the strip steel is overlarge, the setting parameters of the subsequent rolling mill need to be adjusted in time.

As one possible implementation, the difference between the strip head-tail temperature difference and the standard strip head-tail temperature difference may be determined as the deviation corresponding to the strip head-tail temperature difference.

And 304, comparing the strip steel image with a standard strip steel image to determine the deformation of the strip steel.

The specific implementation process and principle of the step 304 may refer to the detailed description of the foregoing embodiments, which is not repeated herein.

And 305, adjusting setting parameters of a later rolling mill in two adjacent rolling mills according to the deviation corresponding to the head-tail temperature difference of the strip steel and the deformation of the strip steel.

As an example, if the deviation corresponding to the temperature difference between the head and the tail of the strip is too large, the deformation resistance of the head of the strip is high, the deformation resistance of the tail of the strip is low, and metal flows from the tail to the head, so that the strip is deformed, and centering is affected. Therefore, when the deviation corresponding to the head-tail temperature difference of the strip steel is overlarge, the rolling force of the subsequent rolling mill can be adjusted. Specifically, the rolling force at the position with low temperature of the strip steel can be increased; or the rolling force at the high-temperature position of the strip steel can be reduced; or the rolling force at the low-temperature position of the strip steel can be increased, and the rolling force at the high-temperature position of the strip steel can be reduced. For example, if the temperature of the head of the strip is low, the rolling force on the head of the strip can be increased.

According to the strip steel centering method, the strip steel head temperature and the strip steel tail temperature are obtained, the strip steel head-tail temperature difference is determined, the difference between the strip steel head-tail temperature difference and the standard strip steel head-tail temperature difference is determined, the deviation corresponding to the strip steel head-tail temperature difference is obtained, and the setting parameters of the next rolling mill in the two adjacent rolling mills are adjusted through the deviation corresponding to the strip steel head-tail temperature difference. Therefore, the influence of the head-tail temperature difference of the strip steel on the strip steel centering is considered, so that the setting parameters of a later rolling mill are timely adjusted, the pre-adjustment is realized in advance, and the probability of steel clamping, tail flicking accidents and wave defects can be reduced.

Referring to fig. 4, a schematic flow chart of a strip steel centering method according to a third embodiment of the present application is shown. As shown in fig. 4, the strip centering method may include the steps of:

in the process of strip steel production, actual production parameters and strip steel images between two adjacent rolling mill stands are acquired 401.

The specific implementation process and principle of the above step 401 may refer to the detailed description of the above embodiment, which is not repeated herein.

Step 402, according to the temperature of two sides of the strip steel, and determining the temperature difference of two sides of the strip steel.

As an example, the actual production parameters may include the temperature of both sides of the strip.

In the embodiment of the application, the higher the temperature is, the lower the deformation resistance of the metal is, and if the temperature difference is too high, the metal is easy to deform. Therefore, in the embodiment of the application, the temperature sensors are arranged at proper positions between two rolling mills to acquire the temperatures of two sides of the strip steel between two adjacent rolling mills, and the difference value between the temperatures of the two sides of the strip steel is determined as the temperature difference of the two sides of the strip steel so as to carry out subsequent analysis.

And 403, determining the difference between the temperature difference of the two sides of the strip steel and the temperature difference of the two sides of the standard strip steel in the standard production parameters as the corresponding deviation of the temperature difference of the two sides of the strip steel.

In the embodiment of the application, the lower the temperature difference between two sides of the strip steel is, the better the temperature difference is, but the actual condition and the cost are considered, the temperature difference between two sides of the standard strip steel can be set between 10 and 20 ℃, for example, the temperature difference between two sides of the standard strip steel is 15 ℃, namely, the temperature difference between one side of the strip steel and the other side of the strip steel can be allowed to be 15 ℃, and if the deviation corresponding to the temperature difference between the two sides of the strip steel is too large, the setting parameters of the later rolling mill need to be adjusted in time.

As one possible implementation mode, the difference between the temperature difference of the two sides of the strip steel and the temperature difference of the two sides of the standard strip steel can be determined as the deviation corresponding to the temperature difference of the two sides of the strip steel, and whether the strip steel has abnormal deformation or not can be determined according to the deviation corresponding to the temperature difference of the two sides of the strip steel so as to adjust the set parameters of the later rolling mill.

And step 404, comparing the strip steel image with a standard strip steel image to determine the deformation of the strip steel.

The specific implementation and principles of step 404 may refer to the detailed description of the foregoing embodiments, which is not repeated herein.

And step 405, adjusting setting parameters of a later rolling mill in two adjacent rolling mills according to the deviation corresponding to the temperature difference at two sides of the strip steel and the deformation of the strip steel.

As an example, if the deviation corresponding to the temperature difference between the two sides of the strip steel is too large, the deformation resistance of one side of the strip steel may be high, while the deformation resistance of the other side of the strip steel is low, and the metal flows from the side with low deformation resistance to the side with high deformation resistance, so that the strip steel is deformed, and the centering is affected. Therefore, when the deviation corresponding to the head-tail temperature difference of the strip steel is overlarge, the rolling force of the subsequent rolling mill can be adjusted. Specifically, the rolling force of the side with low strip steel temperature can be increased; or the rolling force of the side with high temperature of the strip steel can be reduced; or the rolling force of the side with low strip temperature can be increased, and the rolling force of the side with high strip temperature can be reduced.

According to the strip steel centering method, the difference value between the temperature difference of the two sides of the strip steel and the temperature difference of the two sides of the standard strip steel is determined by acquiring the temperature difference of the two sides of the strip steel, the deviation corresponding to the temperature difference of the two sides of the strip steel is obtained, and the setting parameters of the next rolling mill in the two adjacent rolling mills are adjusted by the deviation corresponding to the temperature difference of the two sides of the strip steel. Therefore, the influence of the temperature difference at two sides of the strip steel on the centering of the strip steel is considered, so that the setting parameters of a later rolling mill are timely adjusted, the pre-adjustment is realized in advance, and the probability of steel clamping, tail flicking accidents and wave defects can be reduced.

Referring to fig. 5, a schematic flow chart of a strip steel centering method according to a fourth embodiment of the present application is shown. As shown in fig. 5, the strip centering method may include the steps of:

in step 501, during the strip production process, the actual production parameters and the strip images between two adjacent rolling stands are obtained.

The specific implementation process and principle of the above step 501 may refer to the detailed description of the above embodiment, which is not repeated herein.

Step 502, determining the parameter deviation of the process water according to the parameter of the process water and the parameter of the standard process water in the standard process parameters.

As an example, the actual production parameters may include production water parameters.

It should be noted that the production water may include roll cooling water, roll gap lubricating water, dust-proof water, peeling-proof water, etc., and the parameters of the production water may include water pressure, water quantity and water temperature. In the actual strip steel production process, the water pressure, water quantity and water temperature of various production water can influence the centering of the strip steel. Therefore, it is necessary to ensure that the parameter of the production water cannot differ too much from the parameter of the standard production water, and if the parameter deviation of the production water is too large, the setting parameters of the subsequent rolling mill need to be adjusted in time.

As an example, when the water pressure is included in the parameter of the process water, a pressure sensor, a pressure gauge, or the like may be provided at an appropriate position between any two rolling mills in the strip production line to measure the water pressure of the process water, and a difference between the water pressure of the process water and the water pressure of the standard process water may be determined as a water pressure deviation of the process water, that is, a parameter deviation of the process water.

As an example, when the water amount is included in the parameter of the process water, a device that can measure the water amount may be provided at an appropriate position between any two rolling mills in the strip production line to measure the water amount of the process water, and a difference between the water amount of the process water and the water amount of the standard process water may be determined as the water amount deviation of the process water, that is, the parameter deviation of the process water.

As an example, when the water temperature is included in the parameter of the process water, a device capable of measuring the water pressure, such as a thermometer, a temperature sensor, etc., may be provided at an appropriate position between any two rolling mills in the strip production line to measure the water temperature of the process water, and a difference between the water temperature of the process water and the water temperature of the standard process water may be determined as the water temperature deviation of the process water, i.e., the parameter deviation of the process water.

And 503, comparing the strip steel image with a standard strip steel image to determine the deformation of the strip steel.

The specific implementation and principles of the above step 503 may refer to the detailed description of the above embodiments, which is not repeated here.

And step 504, adjusting the setting parameters of the next rolling mill in the two adjacent rolling mills according to the parameter deviation of the production water and the deformation of the strip steel.

In the embodiment of the application, when the parameter deviation of the production water is overlarge or the deformation of the strip steel is overlarge, the setting parameters of the next rolling mill in the two adjacent rolling mills can be adjusted, and the deformed strip steel is centered by the next rolling mill in time.

As an example, if the water pressure deviation and the water quantity deviation of the production water are too large, the water pressure setting and the water quantity setting of the subsequent rolling mill can be directly adjusted; if the deviation of the water temperature of the production water is too large, the water temperature can be indirectly reduced by increasing the water quantity, or the water temperature can be indirectly increased by reducing the water quantity.

According to the strip steel centering method, the parameters of the production water are obtained, the difference value between the parameters of the production water and the parameters of the standard production water is determined, the parameter deviation of the production water is determined, and the setting parameters of the next rolling mill in the two adjacent rolling mills are adjusted through the parameter deviation of the production water. Therefore, the influence of the parameters of the production water on the centering of the strip steel is considered, so that the setting parameters of a later rolling mill are timely adjusted, the pre-adjustment is realized in advance, and the probability of steel clamping, tail flicking accidents and wave defects can be reduced.

Referring to fig. 6, a schematic flow chart of a strip steel centering method according to a fifth embodiment of the present application is shown. As shown in fig. 6, the strip centering method may include the steps of:

in step 601, actual production parameters and strip images between two adjacent rolling stands are acquired during strip production.

The specific implementation process and principle of the above step 601 may refer to the detailed description of the above embodiments, which is not repeated herein.

Step 602, determining the difference between the thickness of the strip steel and the standard strip steel thickness in the standard production parameters as the strip steel thickness deviation.

The actual production parameters can include the thickness of the strip steel.

In the embodiment of the application, the closer the thickness of the strip steel is to the preset rolling thickness, the better the balance of the thickness of each point of the strip steel is, so that the thickness of the rolled strip steel is required to be ensured to be similar to the thickness of the standard strip steel as much as possible.

And 603, comparing the strip steel image with a standard strip steel image to determine the deformation of the strip steel.

The specific implementation process and principle of the above step 603 may refer to the detailed description of the above embodiment, which is not repeated herein.

And step 604, adjusting setting parameters of a later rolling mill in two adjacent rolling mills according to the thickness deviation and the deformation of the strip steel.

As one possible implementation manner, at least one parameter of roll shifting force, roll shifting amount, roll bending force, roll bending amount, water temperature of production water and water pressure of the production water of the next rolling mill in the two adjacent rolling mills can be adjusted according to the thickness deviation of the strip steel.

As an example, if the thickness deviation of the strip is too large, or the thickness of each point of the strip is not uniform, the centering of the strip is directly affected. In addition, the thickness of the strip steel is different, the technological parameters of corresponding points of the rear stand are required to be different, and the purpose of adjusting the thickness deviation of the strip steel can be realized by adjusting the rolling reduction of the rear rolling mill; or at least one parameter of the roll shifting force, the roll shifting amount, the roll bending force, the roll bending amount, the water temperature of the production water and the water pressure of the production water of the later rolling mill can be adjusted so as to adjust the thickness deviation of the strip steel.

According to the strip steel centering method, the strip steel thickness is obtained, the difference value between the strip steel thickness and the standard strip steel thickness is determined, the strip steel thickness deviation is obtained, and the setting parameters of the next rolling mill in the two adjacent rolling mills are adjusted through the strip steel thickness deviation. Therefore, the influence of the thickness of the strip steel on the centering of the strip steel is considered, so that the setting parameters of a later rolling mill are timely adjusted, the pre-adjustment is realized in advance, and the probability of steel clamping, tail flicking accidents and wave defects can be reduced.

Referring to fig. 7, a schematic flow chart of a strip steel centering method according to a sixth embodiment of the present application is shown. As shown in fig. 7, the strip centering method may include the steps of:

step 701, acquiring actual production parameters and strip steel images between two adjacent rolling mill stands in the strip steel production process;

Step 702, comparing the actual production parameters with standard production parameters in a strip steel production database to determine the deviation of the production parameters;

the specific implementation process and principle of the steps 701-702 may refer to the detailed description of the embodiments, which is not repeated here.

And 703, extracting the characteristics of the strip steel image, and determining an actual characteristic diagram.

In one embodiment, the extraction of the features of the strip in the strip image may be performed by Scale-invariant feature transform (Scale-INVARIANT FEATURE TRANSFORM, SIFT), gradient direction histogram (Histogram of Oriented Gradients, HOG), or the like.

And step 704, extracting the characteristics of the standard strip steel images in the strip steel production database, and determining a standard characteristic diagram.

In one embodiment, the feature extraction of the strip steel in the standard strip steel image can be performed in a Scale-invariant feature transform (Scale-INVARIANT FEATURE TRANSFORM, SIFT), gradient direction histogram (Histogram of Oriented Gradients, HOG) or the like.

It should be noted that the above examples are only exemplary and should not be construed as limiting the application. In actual use, a proper feature extraction algorithm can be flexibly selected according to actual needs and specific application scenes, and the embodiment of the application is not limited to the method.

And step 705, comparing the actual characteristic diagram with the standard characteristic diagram to determine the deformation of the strip steel.

In one embodiment, feature points can be randomly selected from the actual feature map and the standard feature map respectively for feature point matching, for example, 100 feature points are respectively selected from the actual feature map and the standard feature map, and whether the feature points are matched or not is respectively judged, so that the deformation of the strip steel is determined according to the feature point matching result.

As one possible implementation manner, the higher the similarity between the actual feature map and the standard feature map, the smaller the deformation of the strip steel can be determined; on the contrary, the lower the similarity between the actual characteristic diagram and the standard characteristic diagram is, the larger the deformation of the strip steel can be determined.

And step 706, adjusting the setting parameters of the next rolling mill in the two adjacent rolling mills according to the deviation of the production parameters and the deformation of the strip steel.

The specific implementation and principles of step 706 may refer to the detailed description of the foregoing embodiments, which is not repeated herein.

According to the strip steel centering method, the actual characteristic diagram and the standard characteristic diagram can be determined through characteristic extraction on the strip steel image and the standard strip steel image respectively, and then the actual characteristic diagram and the standard characteristic diagram are compared to determine the deformation of the strip steel. Therefore, whether the strip steel is abnormal or not is determined through visual image feature comparison, and accordingly setting parameters of a later rolling mill are preset in advance aiming at abnormal points of the strip steel, the strip steel is always kept at a centering position, and the probability of steel clamping, tail flicking accidents and wave defects is reduced.

Referring to fig. 8, a schematic flow chart of a strip steel centering method according to a seventh embodiment of the application is shown. As shown in fig. 8, the strip centering method may include the steps of:

In step 801, actual production parameters and strip images between two adjacent rolling stands are acquired during strip production.

Step 802, comparing the actual production parameters with standard production parameters in a strip steel production database, and determining the deviation of the production parameters.

And 803, comparing the strip steel image with a standard strip steel image to determine the deformation of the strip steel.

The specific implementation process and principle of the steps 801 to 803 may refer to the detailed description of the foregoing embodiments, which is not repeated herein.

And step 804, if the deviation of the production parameters is greater than a preset deviation threshold, adjusting the rolling force of the last rolling mill in the two adjacent rolling mills.

The rolling force may be included in the setting parameters of the rolling mill.

As a possible implementation manner, a deviation threshold corresponding to the production parameter deviation may be preset, and when the production parameter deviation is not in the preset deviation threshold, it may be determined that the production parameter deviation is too large, so that the setting parameters of the next rolling mill in the two adjacent rolling mills may be adjusted, for example, the rolling force of the next rolling mill in the two adjacent rolling mills may be adjusted.

For example, when the deviation of the production parameter is the deviation corresponding to the head-tail temperature difference of the strip steel, the preset deviation threshold may be 5 ℃, and when the deviation corresponding to the head-tail temperature difference of the strip steel is greater than 5, the deviation corresponding to the head-tail temperature difference of the strip steel may be determined, that is, the deviation of the production parameter is too large, and the setting parameters of the next rolling mill in the two adjacent rolling mills may be adjusted.

As an example, when the actual production parameters are the head temperature and the tail temperature of the strip steel and the deviation corresponding to the head-tail temperature difference of the strip steel is larger than a preset deviation threshold value, the rolling force of the later rolling mill can be adjusted to improve the rolling force of the lower position of the strip steel temperature, so that the pre-adjustment of the strip steel temperature is realized, and the probability of steel clamping, tail flicking accidents and wave defects is reduced. For example, the rolling force on the side where the strip steel temperature is low can be increased; or the rolling force of the side with high temperature of the strip steel can be reduced; or the rolling force of the side with low strip temperature can be increased, and the rolling force of the side with high strip temperature can be reduced.

It should be understood that, in the embodiment of the present application, the manner of adjusting the rolling force of the rolling mill according to the deviation corresponding to the head-tail temperature difference of the strip steel is also applicable to a scenario of adjusting the rolling force according to the deviation corresponding to the temperature difference of two sides of the strip steel, or other scenarios in which centering adjustment is required by the rolling force, which is not limited in the embodiment of the present application.

And step 805, adjusting setting parameters of a later rolling mill in two adjacent rolling mills according to the deformation of the strip steel.

The specific implementation and principles of the step 805 may refer to the detailed description of the foregoing embodiments, which is not repeated herein.

According to the strip steel centering method, the rolling force of the next rolling mill in the two adjacent rolling mills is adjusted according to the production parameter deviation and the strip steel deformation of the strip steel between the two adjacent rolling mills, so that the pre-adjustment is realized, and the probability of steel clamping, tail flick accidents and wave defects can be reduced.

Referring to fig. 9, a schematic flow chart of a strip steel centering method according to an eighth embodiment of the present application is shown. As shown in fig. 9, the strip centering method may include the steps of:

step 901, acquiring actual production parameters and strip steel images between two adjacent rolling mill stands in the strip steel production process.

And step 902, comparing the actual production parameters with standard production parameters in a strip steel production database to determine the deviation of the production parameters.

And 903, comparing the strip steel image with a standard strip steel image to determine the deformation of the strip steel.

The specific implementation and principles of the steps 901-903 may refer to the detailed description of the foregoing embodiments, which are not repeated herein.

And 904, if the deviation of the production parameters is greater than a preset deviation threshold, adjusting the water pressure and/or the water quantity of the next rolling mill in the two adjacent rolling mills.

Wherein, the set parameters of the rolling mill can comprise at least one of the water pressure of the production water and the water quantity of the production water.

As an example, when the actual production parameter is the parameter deviation threshold value of the production water, the parameter of the production water in the strip steel production process can be preset in advance by adjusting the water pressure of the production water and/or the water quantity of the production water of the subsequent rolling mill, so that the water pressure, the water quantity and the water temperature of the production water are equal to or similar to those of the standard production water. It should be understood that the present embodiment is equally applicable to other situations where centering adjustment by setting water pressure and/or water amount is required, which is not limited by the present embodiment.

Step 905, adjusting setting parameters of a later rolling mill in two adjacent rolling mills according to the deformation of the strip steel.

The specific implementation process and principle of the step 905 may refer to the detailed description of the foregoing embodiments, which is not repeated herein.

According to the strip steel centering method, when parameters such as water pressure, water quantity and water temperature of production water influence strip steel centering, the water pressure and/or water quantity of the next rolling mill in two adjacent rolling mills can be adjusted, so that the pre-adjustment is realized, and the probability of steel clamping, tail flicking accidents and wave defects can be reduced.

Referring to fig. 10, a schematic flow chart of a strip steel centering method according to a ninth embodiment of the present application is shown. As shown in fig. 10, the strip centering method may include the steps of:

Step 1001, acquiring actual production parameters and strip steel images between two adjacent rolling mill stands in the strip steel production process;

Step 1002, comparing the actual production parameters with standard production parameters in a strip steel production database, and determining the deviation of the production parameters;

step 1003, comparing the strip steel image with a standard strip steel image to determine the deformation of the strip steel;

the specific implementation process and principle of the steps 1001-1003 may refer to the detailed description of the embodiments, which is not repeated here.

And step 1004, if the deviation of the production parameters is greater than a preset deviation threshold, adjusting the reduction of the last rolling mill in the two adjacent rolling mills.

The rolling mill setting parameters may include rolling reduction.

As an example, when the actual production parameter is the thickness of the strip steel and the deviation of the thickness of the strip steel is greater than a preset deviation threshold value, the deviation of the thickness of the strip steel can be reduced by adjusting the reduction of the subsequent rolling mill. If the thickness deviation of the strip steel is larger than a preset deviation threshold value, the rolling reduction can be increased or reduced, and the advance presetting of the thickness of the strip steel is realized, so that the probability of steel clamping, tail flicking accidents and wave defects is reduced. It should be understood that this embodiment is also applicable to other scenes in which centering adjustment is required by the amount of depression, which is not limited in this embodiment.

Step 1005, adjusting setting parameters of a later rolling mill in two adjacent rolling mills according to the deformation of the strip steel.

The specific implementation and principles of step 1005 may refer to the detailed description of the foregoing embodiments, which is not repeated herein.

According to the strip steel centering method provided by the embodiment of the application, when the thickness deviation of the strip steel is larger than the preset deviation threshold value, the rolling reduction of the next rolling mill in the two adjacent rolling mills is adjusted, so that the pre-adjustment is realized, and the probability of steel clamping, tail flicking accidents and wave defects is reduced.

Referring to fig. 11, a schematic flow chart of a strip steel centering method according to a tenth embodiment of the present application is shown. As shown in fig. 11, the strip centering method may include the steps of:

In step 1101, actual production parameters and strip images between two adjacent rolling stands are acquired during strip production.

And 1102, comparing the actual production parameters with standard production parameters in a strip steel production database to determine the deviation of the production parameters.

And step 1103, comparing the strip steel image with a standard strip steel image to determine the deformation of the strip steel.

And 1104, adjusting the setting parameters of the next rolling mill in the two adjacent rolling mills according to the deviation of the production parameters and the deformation of the strip steel.

The specific implementation and principles of the steps 1101-1104 may refer to the detailed description of the embodiments, and are not repeated herein.

Step 1105, obtaining a rolling result of a later rolling mill in the two adjacent rolling mills.

The rolling result can be directly obtained when the strip steel passes through the later rolling mill, or the final rolling result can be obtained after the strip steel finishes all rolling.

And 1106, updating standard production parameters in a strip steel production database according to the rolling result.

In the embodiment of the application, the standard production parameters in the strip steel production database can be updated according to the rolling result of the time and the original data in the strip steel production database, the real-time performance of the standard production parameters is ensured, the standard production parameters are continuously optimized, and the credibility of the comparison of the actual production parameters and the strip steel image with the standard production parameters is improved.

As a possible way, after each rolling mill finishes processing the strip steel, the rolling result of each rolling mill is obtained, and when the rolling result of each rolling mill meets the standard production parameters in the strip steel production database, the setting parameters of the rolling mill are updated into the strip steel production database; or the final rolling result of the strip steel production line can be obtained after the strip steel production is finished, and when the final rolling result accords with the standard production parameters in the strip steel production database, the setting parameters of each rolling mill in the secondary production are updated into the strip steel production database.

According to the strip steel centering method, the self-learning method is utilized, the real-time rolling result of the rolling mill in the actual production process is combined with the original data in the strip steel production database, and the standard production parameters in the strip steel production database are updated in real time, so that the reliability and the instantaneity of the standard production parameters are improved, the accuracy of strip steel centering is further improved, and the probability of steel clamping, tail flicking accidents and wave defects is further reduced.

Referring to fig. 12, a schematic structural diagram of a strip centering device according to an eleventh embodiment of the present application is shown, and for convenience of explanation, only a portion related to the embodiment of the present application is shown.

The strip steel centering device specifically comprises the following modules:

And the data acquisition module 1201 is used for acquiring actual production parameters and strip steel images between two adjacent rolling mill stands in the strip steel production process.

The deviation determining module 1202 is configured to compare the actual production parameter with a standard production parameter in a strip steel production database, and determine a deviation of the production parameter.

In the embodiment of the application, the production parameter deviation comprises at least one of deviation corresponding to the head-tail temperature difference of the strip steel, deviation corresponding to the temperature difference of two sides of the strip steel, parameter deviation of production water and thickness deviation of the strip steel.

The deformation determining module 1203 is configured to compare the strip image with a standard strip image, and determine a deformation of the strip.

And the adjusting module 1204 is used for adjusting the setting parameters of the next rolling mill in the two adjacent rolling mills according to the deviation of the production parameters and the deformation of the strip steel.

According to the embodiment of the application, the actual production parameters and the strip steel images between the adjacent two rolling mill frames are subjected to comparison analysis, so that the set parameters of the next rolling mill are preset in advance by combining the results of parameter comparison and image comparison, the strip steel is always kept at the centering position, and the probability of steel clamping, tail flicking accidents and wave defects is greatly reduced.

In the embodiment of the present application, the actual production parameters include a strip head temperature and a strip tail temperature, and the deviation determining module 1202 may specifically include the following sub-modules:

And the head-tail temperature difference determining submodule is used for determining the head-tail temperature difference of the strip steel according to the head temperature of the strip steel and the tail temperature of the strip steel.

The first deviation determining submodule is used for determining the difference between the head-tail temperature difference of the strip steel and the head-tail temperature difference of the standard strip steel in the standard production parameters as the deviation corresponding to the head-tail temperature difference of the strip steel.

In the embodiment of the present application, the actual production parameters include temperatures of two sides of the strip steel, and the deviation determining module 1202 may specifically include the following sub-modules:

and the temperature difference determining submodule is used for determining the temperature difference of the two sides of the strip steel according to the temperature of the two sides of the strip steel.

The second deviation determining submodule is used for determining the difference value between the temperature difference of the two sides of the strip steel and the temperature difference of the two sides of the standard strip steel in the standard production parameters as the deviation corresponding to the temperature difference of the two sides of the strip steel.

In the embodiment of the present application, the actual production parameters include parameters of the production water, and the deviation determining module 1202 may specifically include the following sub-modules:

And the third deviation determining submodule is used for determining the parameter deviation of the production water according to the parameter of the production water and the parameter of the standard production water in the standard production parameters.

In one possible embodiment, the process water includes at least one of roll cooling water, roll gap lubricating water, dust water, and stripping water.

In the embodiment of the present application, the actual production parameters include the thickness of the strip steel, and the deviation determining module 1202 may specifically include the following sub-modules:

And the fourth deviation determining submodule is used for determining the difference value between the thickness of the strip steel and the thickness of the standard strip steel in the standard production parameters as the thickness deviation of the strip steel.

In an embodiment of the present application, the adjustment module 1204 may specifically include the following sub-modules:

The thickness adjusting sub-module is used for adjusting at least one parameter of roll shifting force, roll shifting amount, roll bending force, roll bending amount, water temperature of production water and water pressure of the production water of a next rolling mill in two adjacent rolling mills according to the thickness deviation of the strip steel.

In the embodiment of the present application, the deformation determining module 1203 may specifically include the following sub-modules:

The actual characteristic map determining sub-module is used for extracting characteristics of the strip steel image and determining an actual characteristic map.

And the standard characteristic diagram determining submodule is used for extracting characteristics of the standard strip steel image and determining a standard characteristic diagram.

And the deformation determining submodule is used for comparing the actual characteristic diagram with the standard characteristic diagram to determine the deformation of the strip steel.

In the embodiment of the present application, the setting parameters include rolling force, and the adjustment module 1204 may specifically include the following sub-modules:

And the rolling force adjusting sub-module is used for adjusting the rolling force of the next rolling mill in the two adjacent rolling mills if the deviation of the production parameters is larger than a preset deviation threshold value.

In the embodiment of the present application, the setting parameters include at least one of water pressure and water quantity, and the adjustment module 1204 may specifically include the following sub-modules:

and the water parameter adjusting sub-module is used for adjusting the water pressure and/or the water quantity of the next rolling mill in the two adjacent rolling mills if the deviation of the production parameters is larger than a preset deviation threshold value.

In the embodiment of the present application, the setting parameters include a reduction amount, and the adjustment module 1204 may specifically include the following sub-modules:

And the rolling reduction adjustment submodule is used for adjusting the rolling reduction of the next rolling mill in the two adjacent rolling mills if the deviation of the production parameters is larger than a preset deviation threshold value.

In the embodiment of the application, the strip steel centering device specifically further comprises a self-learning module: the method is used for obtaining the rolling result of the last rolling mill in the two adjacent rolling mills; and updating standard production parameters in a strip steel production database according to the rolling result.

According to the strip steel centering device provided by the embodiment of the application, the actual production parameters are respectively considered as the strip steel head temperature and the strip steel tail temperature, the strip steel two-side temperature, the production water parameter, the strip steel thickness and other scenes, the actual production parameters and the strip steel image under various conditions are respectively subjected to comparison analysis, and the set parameters of the later rolling mill are preset in advance by combining the results of parameter comparison and image comparison, so that the strip steel is always kept at the centering position, and the probability of steel clamping, tail flicking accidents and wave defects is greatly reduced.

The strip steel centering device provided by the embodiment of the application can be applied to the method embodiment, and details are described in the method embodiment and are not repeated here.

Fig. 13 is a schematic structural diagram of a terminal device according to a twelfth embodiment of the present application. As shown in fig. 13, the terminal apparatus 1300 of this embodiment includes: at least one processor 1310 (only one is shown in fig. 13), a memory 1320, and a computer program 1321 stored in the memory 1320 and executable on the at least one processor 1310, the processor 1310 implementing the steps in the strip centering method embodiments described above when executing the computer program 1321.

The terminal device 1300 may be a computing device such as a desktop computer, a notebook computer, a palm computer, and a cloud server. The terminal device can include, but is not limited to, a processor 1310, a memory 1320. It will be appreciated by those skilled in the art that fig. 13 is merely an example of a terminal device 1300 and is not limiting of the terminal device 1300, and may include more or less components than illustrated, or may combine some components, or different components, such as may also include input-output devices, network access devices, etc.

The Processor 1310 may be a central processing unit (Central Processing Unit, CPU), the Processor 1310 may also be other general purpose processors, digital signal processors (DIGITAL SIGNAL processors, DSP), application SPECIFIC INTEGRATED Circuit (ASIC), off-the-shelf Programmable gate array (Field-Programmable GATE ARRAY, FPGA) or other Programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, or the like. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.

The memory 1320 may be an internal storage unit of the terminal device 1300 in some embodiments, such as a hard disk or a memory of the terminal device 1300. The memory 1320 may also be an external storage device of the terminal device 1300, such as a plug-in hard disk, a smart memory card (SMART MEDIA CARD, SMC), a Secure Digital (SD) card, a flash memory card (FLASH CARD) or the like, which are provided on the terminal device 1300 in other embodiments. Further, the memory 1320 may also include both an internal storage unit and an external storage device of the terminal device 1300. The memory 1320 is used to store an operating system, application programs, boot loader (BootLoader), data, and other programs, etc., such as program code of the computer program, etc. The memory 1320 may also be used to temporarily store data that has been output or is to be output.

It will be apparent to those skilled in the art that, for convenience and brevity of description, only the above-described division of the functional units and modules is illustrated, and in practical application, the above-described functional distribution may be performed by different functional units and modules according to needs, i.e. the internal structure of the apparatus is divided into different functional units or modules to perform all or part of the above-described functions. The functional units and modules in the embodiment may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit, where the integrated units may be implemented in a form of hardware or a form of a software functional unit. In addition, the specific names of the functional units and modules are only for distinguishing from each other, and are not used for limiting the protection scope of the present application. The specific working process of the units and modules in the above system may refer to the corresponding process in the foregoing method embodiment, which is not described herein again.

In the foregoing embodiments, the descriptions of the embodiments are emphasized, and in part, not described or illustrated in any particular embodiment, reference is made to the related descriptions of other embodiments.

Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.

In the embodiments provided in the present application, it should be understood that the disclosed apparatus/terminal device and method may be implemented in other manners. For example, the apparatus/terminal device embodiments described above are merely illustrative, e.g., the division of the modules or units is merely a logical function division, and there may be additional divisions in actual implementation, e.g., multiple units or components may be combined or integrated into another system, or some features may be omitted or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection via interfaces, devices or units, which may be in electrical, mechanical or other forms.

The units described as separate units may or may not be physically separate, and units shown as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

In addition, each functional unit in the embodiments of the present application may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit. The integrated units may be implemented in hardware or in software functional units.

The integrated modules/units, if implemented in the form of software functional units and sold or used as stand-alone products, may be stored in a computer readable storage medium. Based on such understanding, the present application may implement all or part of the flow of the method of the above embodiment, or may be implemented by a computer program to instruct related hardware, where the computer program may be stored in a computer readable storage medium, and when the computer program is executed by a processor, the computer program may implement the steps of each of the method embodiments described above. Wherein the computer program comprises computer program code which may be in source code form, object code form, executable file or some intermediate form etc. The computer readable medium may include: any entity or device capable of carrying the computer program code, a recording medium, a U disk, a removable hard disk, a magnetic disk, an optical disk, a computer Memory, a Read-Only Memory (ROM), a random access Memory (Random Access Memory, RAM), an electrical carrier signal, a telecommunications signal, a software distribution medium, and so forth. It should be noted that the computer readable medium contains content that can be appropriately scaled according to the requirements of jurisdictions in which such content is subject to legislation and patent practice, such as in certain jurisdictions in which such content is subject to legislation and patent practice, the computer readable medium does not include electrical carrier signals and telecommunication signals.

The present application may also be implemented by a computer program product for implementing all or part of the steps of the above embodiments of the method, when the computer program product is run on a terminal device, for enabling the terminal device to execute the steps of the above embodiments of the method.

The above embodiments are only for illustrating the technical solution of the present application, and are not limited thereto. Although the application has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present application, and are intended to be included in the scope of the present application.

Claims (9)

1. A strip steel centering method, characterized by comprising: During the strip production process, the actual production parameters and strip images between two adjacent rolling mill stands are obtained; Compare the actual production parameters with the standard production parameters in the strip production database to determine the production parameter deviation; wherein the production parameter deviation includes the deviation corresponding to the temperature difference between the head and tail of the strip, the deviation corresponding to the temperature difference between the two sides of the strip, and the parameter deviation of the production water; Comparing the steel strip image with the standard steel strip image to determine the deformation amount of the steel strip; According to the production parameter deviation and the strip deformation, adjusting the setting parameters of the latter rolling mill of the two adjacent rolling mills; The actual production parameters include the strip head temperature and the strip tail temperature. The actual production parameters are compared with the standard production parameters in the strip production database to determine the production parameter deviation, including: Determining the temperature difference between the head and the tail of the steel strip according to the head temperature of the steel strip and the tail temperature of the steel strip; The difference between the head-to-tail temperature difference of the steel strip and the standard head-to-tail temperature difference of the steel strip in the standard production parameters is determined as the deviation corresponding to the head-to-tail temperature difference of the steel strip; The actual production parameters also include the temperature on both sides of the strip steel, and the actual production parameters are compared with the standard production parameters in the strip steel production database to determine the production parameter deviation, and further include: Determining the temperature difference between the two sides of the steel strip according to the temperatures on both sides of the steel strip; The difference between the temperature difference on both sides of the steel strip and the standard temperature difference on both sides of the steel strip in the standard production parameters is determined as the deviation corresponding to the temperature difference on both sides of the steel strip; The actual production parameters also include parameters of production water, and the actual production parameters are compared with standard production parameters in a strip steel production database to determine the production parameter deviation, and further include: Determining a parameter deviation of the production water according to the parameters of the production water and the parameters of the standard production water in the standard production parameters; Comparing the steel strip image with a standard steel strip image in the steel strip production database to determine the steel strip deformation, further comprising: Extracting features from the steel strip image to determine an actual feature map; Extracting features from the standard steel strip image to determine a standard feature map; Comparing the actual characteristic diagram with the standard characteristic diagram to determine the deformation amount of the steel strip; The setting parameters include rolling force, and adjusting the setting parameters of the latter rolling mill of the two adjacent rolling mills according to the production parameter deviation and the strip deformation includes: If the production parameter deviation is greater than a preset deviation threshold, adjusting the rolling force of the latter rolling mill of the two adjacent rolling mills; The setting parameters also include at least one of the water pressure and the water volume of the production water, and the adjusting the setting parameters of the latter rolling mill of the two adjacent rolling mills according to the production parameter deviation and the strip deformation amount also includes: If the production parameter deviation is greater than a preset deviation threshold, adjusting the water pressure and/or the water volume of the production water of the latter of the two adjacent rolling mills; The setting parameters also include a reduction amount, and the adjusting the setting parameters of the latter rolling mill of the two adjacent rolling mills according to the production parameter deviation and the strip deformation amount also includes: If the production parameter deviation is greater than a preset deviation threshold, the reduction amount of the latter rolling mill among the two adjacent rolling mills is adjusted. 2. The strip centering method as described in claim 1 is characterized in that the production parameter deviation also includes the strip thickness deviation. 3. The strip steel centering method as described in claim 1 is characterized in that the production water includes at least one of roll cooling water, roll gap lubrication water, dust-proof water, and anti-stripping water. 4. The strip centering method according to claim 2, characterized in that the actual production parameters include the strip thickness, and comparing the actual production parameters with the standard production parameters in the strip production database to determine the production parameter deviation comprises: The difference between the strip thickness and the standard strip thickness in the standard production parameters is determined as the strip thickness deviation. 5. The strip centering method according to claim 4, characterized in that adjusting the setting parameters of the latter rolling mill of the two adjacent rolling mills according to the production parameter deviation and the strip deformation comprises: According to the strip thickness deviation, adjust at least one parameter of the roll shifting force, roll shifting amount, roll bending force, roll bending amount, water temperature of production water, and water pressure of the latter rolling mill among the two adjacent rolling mills. 6. The strip centering method according to any one of claims 1 to 5, characterized in that after adjusting the setting parameters of the latter rolling mill of the two adjacent rolling mills according to the production parameter deviation and the strip deformation, it also includes: Obtaining the rolling result of the latter rolling mill among the two adjacent rolling mills; According to the rolling results, the standard production parameters in the strip production database are updated. 7. A strip centering device, characterized in that it is used to implement the strip centering method according to any one of claims 1 to 6, and the strip centering device comprises: A data acquisition module is used to acquire actual production parameters and strip steel images between two adjacent rolling mill stands during strip steel production; A deviation determination module is used to compare the actual production parameters with the standard production parameters in the strip production database to determine the production parameter deviation; wherein the production parameter deviation includes the deviation corresponding to the temperature difference between the head and tail of the strip, the deviation corresponding to the temperature difference between the two sides of the strip, and the parameter deviation of the production water; A deformation amount determination module is used to compare the strip steel image with the standard strip steel image to determine the strip steel deformation amount; An adjustment model is used to adjust the setting parameters of the latter rolling mill of the two adjacent rolling mills according to the production parameter deviation and the strip deformation; Among them, the actual production parameters include the strip head temperature and the strip tail temperature, and the deviation determination module includes the following submodules: The head-to-tail temperature difference determination submodule is used to determine the head-to-tail temperature difference of the strip according to the head temperature of the strip and the tail temperature of the strip; The first deviation determination submodule is used to determine the difference between the head-to-tail temperature difference of the strip and the standard head-to-tail temperature difference of the strip in the standard production parameters as the deviation corresponding to the head-to-tail temperature difference of the strip; The actual production parameters include the temperature on both sides of the strip. The deviation determination module also includes the following submodules: The temperature difference determination submodule on both sides is used to determine the temperature difference on both sides of the strip according to the temperatures on both sides of the strip; The second deviation determination submodule is used to determine the difference between the temperature difference on both sides of the steel strip and the standard temperature difference on both sides of the steel strip in the standard production parameters as the deviation corresponding to the temperature difference on both sides of the steel strip; The actual production parameters include the parameters of production water, and the deviation determination module also includes the following submodules: A third deviation determination submodule, used to determine a parameter deviation of production water according to the parameters of production water and the parameters of standard production water in the standard production parameters; The deformation determination module includes the following submodules: The actual feature map determination submodule is used to extract features from the strip steel image and determine the actual feature map; A standard feature map determination submodule is used to extract features from a standard strip steel image and determine a standard feature map; The deformation determination submodule is used to compare the actual characteristic diagram with the standard characteristic diagram to determine the deformation of the strip; The setting parameters include rolling force, and the adjustment module includes the following submodules: A rolling force adjustment submodule adjusts the rolling force of the latter of two adjacent rolling mills if the production parameter deviation is greater than a preset deviation threshold; The setting parameters also include at least one of water pressure and water volume, and the adjustment module also includes the following submodules: A water parameter adjustment submodule, for adjusting the water pressure and/or water volume of the latter of two adjacent rolling mills if the production parameter deviation is greater than a preset deviation threshold; The setting parameters also include the pressing amount, and the adjustment module also includes the following sub-modules: The reduction adjustment submodule is used to adjust the reduction of the latter rolling mill among two adjacent rolling mills if the production parameter deviation is greater than a preset deviation threshold. 8. A terminal device, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor implements the method according to any one of claims 1 to 6 when executing the computer program. 9. A computer-readable storage medium storing a computer program, wherein the computer program, when executed by a processor, implements the method according to any one of claims 1 to 6.