CN117299801B - Automatic control method for hot continuous rolling mill fly shearing tail coupling, storage medium and electronic device - Google Patents

Abstract

The invention provides a hot continuous rolling mill fly shearing tail coupling automatic control method, a storage medium and an electronic device. The method of the invention comprises the following steps: the secondary controller is communicated with a head and tail cutting device of the primary flying shears through the dividing layers, and the secondary controller automatically sets a shearing mode according to judging conditions; the second-level controller sends the shearing mode to the first-level flying shears, and the first-level flying shears shear shears according to the shearing mode; the first-stage flying shears automatically execute shearing operation by receiving the shearing mode sent by the second-stage controller through the Ethernet. According to the invention, on the premise of ensuring stable and smooth running of finish rolling and coiling coiled steel, the shearing and control modes of the flying shears are optimized, the tail cutting mode is automatically set through the secondary flying shears, and the tail cutting mode command is transmitted to the primary flying shears for execution, so that the optimal shearing of an intermediate blank is ensured, the slab cutting loss caused by unreasonable intermediate blank shearing mode is reduced, the rolling line yield is improved, the production cost is reduced, and the enterprise benefit is improved.

Description

A hot rolling mill flying shear tail coupling automatic control method, storage medium and electronic device

Technical Field

The present invention relates to the technical field of steel rolling technology, and in particular to an automatic control method, storage medium and electronic device for a hot rolling mill shear tail coupling.

Background Art

After the hot rolling mill strip is rolled by the roughing unit, the head and tail will have shape defects such as "tongue" and "fishtail". In order to ensure the stability of subsequent production, the head and tail of the strip need to be cut before entering the finishing unit, so that the finishing mill can bite the strip smoothly when threading, and the coiler can successfully coil and transport it. However, at this stage, the same head and tail shearing method is used for flying shearing, and some intermediate billets with good tail shapes will also be sheared, which will cause unnecessary cutting losses, resulting in waste of cutting losses, and further affecting the yield rate. Therefore, it is necessary to set the optimal shearing method according to the different head and tail shapes of the strip to achieve optimal shearing, reduce the loss of intermediate billet shearing, and improve the yield rate of the rolling line.

Summary of the invention

According to the technical problems raised above, a method for automatic control of the coupling of flying shear and tail of hot rolling mill based on product use and tail shape is provided. Under the premise of ensuring the stable and smooth running of finishing rolling and coiling, the invention optimizes the shearing and control mode of the flying shear, automatically sets the tail cutting mode through the secondary flying shear, transmits the tail cutting mode command to the primary flying shear for execution, ensures the optimal shearing of the intermediate billet, reduces the slab cutting loss caused by the unreasonable shearing mode of the intermediate billet, improves the yield rate of the rolling line, reduces the production cost, and improves the enterprise efficiency.

The technical means adopted by the present invention are as follows:

A hot rolling mill flying shear tail coupling automatic control method, comprising:

S1. Connect the secondary controller to the head and tail cutting device of the primary flying shear by dividing the layers, and the secondary controller automatically sets the shearing mode according to the judgment conditions;

S2, the secondary controller sends the shearing method to the primary flying shear, and the primary flying shear performs shearing according to the shearing method;

S3, the first-level flying shear receives the cutting method sent by the second-level controller through Ethernet and automatically performs the cutting operation.

Furthermore, the judgment conditions in step S1 include carbon content of steel type, thickness of finished product, width reduction, and direction of coils, and the shearing methods include cutting the head without cutting the tail and cutting the head and cutting the tail.

Furthermore, in step S1, the secondary controller automatically sets the shearing mode according to the judgment conditions, which specifically includes:

Shearing method 1: When the carbon content of the rolling intermediate billet Wc% ≥ 0.45%, the tail of the rolling intermediate billet with a carbon content Wc% ≥ 0.45% is sheared according to the detected tail cutting value;

Shearing method 2: When the carbon content of the rolling intermediate billet Wc% is less than 0.45%, the steel coil is flat in direction, the finished product thickness h≥3.8mm and the width reduction △B≤50mm, the tail of the rolling intermediate billet is sheared and the tail is not sheared;

Shearing method 3: When the carbon content of the rolling intermediate billet Wc% is less than 0.45%, the steel coil is flat in direction and the finished product thickness h is less than 3.8mm or the width reduction △B is greater than 50mm, the tail of the rolling intermediate billet is sheared by the flying shear tail shearing method, and the tail of the rolling intermediate billet is sheared according to the tail cutting detection value;

Shearing method 4: When the carbon content of the rolling intermediate billet Wc% is less than 0.45%, the steel coil is flat and non-divided, the finished product thickness h≥6.0mm and the width reduction △B≤30mm, the tail of the rolling intermediate billet is sheared and the tail is not sheared;

Shearing method 5: When the carbon content of the rolled intermediate billet Wc% is less than 0.45%, the steel coil is flat and non-divided, the finished product thickness h is less than 6.0mm or the width reduction △B is greater than 30mm, the tail of the rolled intermediate billet is sheared by the flying shear tail shearing method, and the tail of the rolled intermediate billet is sheared according to the tail cutting detection value.

Further, in step S2, the first-level flying shear performs shearing according to a shearing method, specifically including:

When the carbon content of the rolling intermediate billet Wc% ≥ 0.45%, the first-stage flying shear performs shearing mode 1, and the first-stage flying shear shears the tail of the intermediate billet according to the tail cutting detection value;

When the carbon content of the rolling intermediate billet is Wc%＜0.45%, the steel coil is flat in direction, the finished product thickness h≥3.8mm and the width reduction △B≤50mm, the first-level flying shear performs shearing mode 2, and the first-level flying shear does not shear the tail of the intermediate billet;

When the carbon content of the rolling intermediate billet Wc% is less than 0.45%, the steel coil is flat in direction and divided, the finished product thickness h is less than 3.8mm or the width reduction △B is greater than 50mm, the first-stage flying shear performs shearing mode 3, and the first-stage flying shear shears the tail of the intermediate billet according to the detected tail cutting value;

When the carbon content of the rolling intermediate billet Wc% is less than 0.45%, the steel coil is flat and non-divided, the finished product thickness h≥6.0mm and the width reduction △B≤30mm, the first-level flying shear performs shearing mode 4, and the first-level flying shear does not shear the tail of the intermediate billet;

When the carbon content of the rolled intermediate billet Wc% is less than 0.45%, the steel coil is flat in the non-coil direction, the finished product thickness h is less than 6.0mm or the width reduction △B is greater than 30mm, the first-level flying shear executes shearing mode 5, and the first-level flying shear shears the tail of the intermediate billet according to the tail cutting detection value.

Further, in step S3, the first-level flying shear receives the shearing mode sent by the second-level controller via Ethernet and automatically performs the shearing operation, which specifically includes:

When the rolled intermediate billet reaches the tail shearing position of the flying shear, shearing control is automatically performed according to the received shearing mode.

The present invention provides a storage medium, which includes a stored program, wherein when the program is running, the above-mentioned automatic control method for the flying shear tail coupling of a hot rolling mill is executed.

The present invention also provides an electronic device, comprising a memory, a processor and a computer program stored in the memory and executable on the processor, wherein the processor executes the above-mentioned automatic control method for the hot rolling mill flying shear tail coupling through the computer program.

Compared with the prior art, the present invention has the following advantages:

1. The automatic control method for the tail coupling of the flying shear of a hot rolling mill provided by the present invention determines the shearing method of the intermediate billet according to the width reduction, carbon content, finished product thickness, coil direction and other conditions, and automatically sets the shearing mode by layer through the secondary controller. The first-level flying shear executes the shearing method issued by the secondary controller to achieve the optimal shearing amount.

2. The automatic control method for the shear tail coupling of the hot rolling mill provided by the present invention reduces the cutting loss caused by unreasonable tail shearing, reduces the shear loss rate of the hot rolling finishing rolling, and improves the yield rate of the rolled wire. By adopting the method of the present invention, the cutting loss rate of the rolled wire is significantly reduced from the previous 0.62% to 0.390%, and the yield rate of the rolled wire is increased by 0.23%.

Based on the above reasons, the present invention can be widely promoted in the fields of steel rolling technology and the like.

BRIEF DESCRIPTION OF THE DRAWINGS

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

FIG1 is a flow chart of the method of the present invention.

FIG. 2 is a flow chart showing the shearing mode determination performed by the secondary controller of the present invention.

FIG3 is a schematic diagram of the intermediate billet rolling process flow provided in an embodiment of the present invention.

FIG. 4 is a schematic diagram of the head and tail shape provided by an embodiment of the present invention.

DETAILED DESCRIPTION

In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

As shown in FIG1 , the present invention provides a method for automatically controlling the shear tail coupling of a hot rolling mill, comprising:

S1. Connect the secondary controller to the head and tail cutting device of the primary flying shear by dividing the layers. The secondary controller automatically sets the shearing mode according to the judgment conditions. In this embodiment, the judgment conditions include the carbon content of the steel type, the thickness of the finished product, the width reduction amount, and the direction of the coils. The shearing modes include head cutting without tail cutting and head and tail cutting.

S2, the secondary controller sends the shearing method to the primary flying shear, and the primary flying shear performs shearing according to the shearing method;

S3, the primary flying shear receives the shearing mode sent by the secondary controller via Ethernet and automatically performs the shearing operation. In this embodiment, when the rolled intermediate billet reaches the tail shearing position of the flying shear, shearing control is automatically performed according to the received shearing mode.

In the specific implementation, as a preferred embodiment of the present invention, in step S1, the secondary controller automatically sets the shearing mode according to the judgment condition, as shown in FIG2 , specifically including:

Shearing method 1: When the carbon content of the rolling intermediate billet Wc% ≥ 0.45%, since the tail of the intermediate billet is relatively low, the increase in carbon content will greatly increase the deformation resistance of the strip steel, and the fishtail of the strip steel will cause roller mark defects on the rolls. Therefore, the tail of the rolling intermediate billet with a carbon content of Wc% ≥ 0.45% is sheared according to the detected tail cutting value;

Shearing method 2: When the carbon content of the rolling intermediate billet Wc% is less than 0.45%, the steel coil is flat in direction, the finished product thickness h≥3.8mm and the width reduction △B≤50mm, the tail of the rolling intermediate billet is sheared and the tail is not sheared;

Shearing method 3: When the carbon content of the rolling intermediate billet Wc% is less than 0.45%, the steel coil is flat in direction and the finished product thickness h is less than 3.8mm or the width reduction △B is greater than 50mm, the tail of the rolling intermediate billet is sheared by the flying shear tail shearing method, and the tail of the rolling intermediate billet is sheared according to the tail cutting detection value;

Shearing method 4: When the carbon content of the rolling intermediate billet Wc% is less than 0.45%, the steel coil is flat and non-divided, the finished product thickness h≥6.0mm and the width reduction △B≤30mm, the tail of the rolling intermediate billet is sheared and the tail is not sheared;

Shearing method 5: When the carbon content of the rolled intermediate billet Wc% is less than 0.45%, the steel coil is flat and non-divided, the finished product thickness h is less than 6.0mm or the width reduction △B is greater than 30mm, the tail of the rolled intermediate billet is sheared by the flying shear tail shearing method, and the tail of the rolled intermediate billet is sheared according to the tail cutting detection value.

In specific implementation, as a preferred embodiment of the present invention, in step S2, the primary flying shear performs shearing according to a shearing method, specifically including:

When the carbon content of the rolling intermediate billet Wc% ≥ 0.45%, the first-stage flying shear performs shearing mode 1, and the first-stage flying shear shears the tail of the intermediate billet according to the tail cutting detection value;

When the carbon content of the rolling intermediate billet is Wc%＜0.45%, the steel coil is flat in direction, the finished product thickness h≥3.8mm and the width reduction △B≤50mm, the first-level flying shear performs shearing mode 2, and the first-level flying shear does not shear the tail of the intermediate billet;

When the carbon content of the rolling intermediate billet Wc% is less than 0.45%, the steel coil is flat in direction and divided, the finished product thickness h is less than 3.8mm or the width reduction △B is greater than 50mm, the first-stage flying shear performs shearing mode 3, and the first-stage flying shear shears the tail of the intermediate billet according to the detected tail cutting value;

When the carbon content of the rolling intermediate billet Wc% is less than 0.45%, the steel coil is flat and non-divided, the finished product thickness h≥6.0mm and the width reduction △B≤30mm, the first-level flying shear performs shearing mode 4, and the first-level flying shear does not shear the tail of the intermediate billet;

When the carbon content of the rolled intermediate billet Wc% is less than 0.45%, the steel coil is flat in the non-coil direction, the finished product thickness h is less than 6.0mm or the width reduction △B is greater than 30mm, the first-level flying shear executes shearing mode 5, and the first-level flying shear shears the tail of the intermediate billet according to the tail cutting detection value.

As shown in FIG3 , it is a schematic diagram of the intermediate billet rolling process flow according to an embodiment of the present invention, and as shown in FIG4 , it is a schematic diagram of the head and tail shapes according to an embodiment of the present invention.

Example 1

Step 1: The secondary controller is connected to the head and tail cutting device of the primary flying shear by dividing the layers. The secondary controller automatically sets the cutting mode according to the judgment conditions. The cutting mode is as follows:

Shearing method 1: When the carbon content of the rolling intermediate billet Wc% ≥ 0.45%, since the tail of the intermediate billet is relatively low, the increase in carbon content will greatly increase the deformation resistance of the strip steel, and the fishtail of the strip steel will cause roller mark defects on the rolls. Therefore, the tail of the steel with a carbon content of Wc% ≥ 0.45% is cut;

When the carbon content of the rolled intermediate billet Wc%≥0.45%, the first-stage flying shear executes the "shearing mode 1" command, and the first-stage flying shear shears the tail of the intermediate billet according to the tail cutting detection value.

Shearing method 2: When the carbon content Wc% is less than 0.45%, the steel coil is flat in direction and divided into coils, the finished product thickness h≥3.8mm and the width reduction △B≤50mm, the tail of this type of intermediate billet adopts the flying shear tail empty passing method;

When the carbon content Wc% is less than 0.45%, the steel coil is flat in direction, the finished product thickness h≥3.8mm and the width reduction △B≤50mm, the first-level flying shear executes the "cutting mode 2" command, and the tail of the intermediate billet is not sheared.

Shearing method 3: When the carbon content Wc% is less than 0.45%, the steel coil is flat in direction and the finished product thickness h is less than 3.8mm or the width reduction △B is greater than 50mm, the tail of this type of intermediate billet is sheared by the flying shear tail;

When the carbon content Wc% is less than 0.45%, the steel coil is flat in direction, the finished product thickness h is less than 3.8mm or the width reduction △B is greater than 50mm, the first-level flying shear executes the "cutting mode 3" command, and the tail shear value of the flying shear is cut according to the detected tail cutting value.

Shearing method 4: When the carbon content Wc% is less than 0.45%, the steel coil is flat and non-divided, the finished product thickness h≥6.0mm and the width reduction △B≤30mm, the tail of this type of intermediate billet adopts the flying shear tail empty passing method;

When the carbon content Wc% is less than 0.45%, the steel coil is flat without splitting, the finished product thickness h≥6.0mm and the width reduction △B≤30mm, the first-level flying shear executes the "shear mode 4" command, and the tail of the intermediate billet is not sheared.

Shearing method 5: When the carbon content Wc% is less than 0.45%, the steel coil is flat and non-divided, the finished product thickness h is less than 6.0mm or the width reduction △B is greater than 30mm, the tail of this type of intermediate billet is sheared by the flying shear tail;

When the carbon content Wc% is less than 0.45%, the steel coil is flat in direction without splitting, the finished product thickness h is less than 6.0mm or the width reduction △B is greater than 30mm, the first-level flying shear executes the "cutting mode 5" command, and the tail shear value of the flying shear is cut according to the detected tail cutting value.

Step 2: The current rolling carbon content Wc%=0.05%, the finished product thickness h=4.5mm, and the rolled steel type is coiled, the raw material width _Bc =1265mm, the finished product width _Bp =1230mm, the width reduction △B= _Bc - _Bp =1265-1230=35mm, △B≤50mm, according to the secondary automatic tail cutting method judgment conditions, shearing method 2 is adopted, and the tail of the intermediate billet is not sheared.

Step 3: The first-stage flying shear receives the cutting mode 2 automatically set by the second-stage controller via Ethernet.

Step 4: The first-level flying shear executes the shearing mode instruction. When the intermediate billet reaches the tail shearing position of the flying shear, the tail shear is cut in vain according to the received flying shear shearing mode 2 instruction.

Example 2

Step 1: The secondary controller is connected to the head and tail cutting device of the primary flying shear by dividing the layers. The secondary controller automatically sets the cutting mode according to the judgment conditions. The cutting mode is as follows:

Shearing method 1: When the carbon content of the rolling intermediate billet Wc% ≥ 0.45%, since the tail of the intermediate billet is relatively low, the increase in carbon content will greatly increase the deformation resistance of the strip steel, and the fishtail of the strip steel will cause roller mark defects on the rolls. Therefore, the tail of the steel with a carbon content of Wc% ≥ 0.45% is cut;

When the carbon content of the rolled intermediate billet Wc%≥0.45%, the first-level flying shear executes the "cutting mode 1" command, and the flying shear cuts the tail of the intermediate billet according to the tail cutting detection value.

Shearing method 2: When the carbon content Wc% is less than 0.45%, the steel coil is flat in direction and divided into coils, the finished product thickness h≥3.8mm and the width reduction △B≤50mm, the tail of this type of intermediate billet adopts the flying shear tail empty passing method;

When the carbon content Wc% is less than 0.45%, the steel coil is flat in direction, the finished product thickness h≥3.8mm and the width reduction △B≤50mm, the first-level flying shear executes the "cutting mode 2" command, and the tail of the intermediate billet is not sheared.

Shearing method 3: When the carbon content Wc% is less than 0.45%, the steel coil is flat in direction and the finished product thickness h is less than 3.8mm or the width reduction △B is greater than 50mm, the tail of this type of intermediate billet is sheared by the flying shear tail;

When the carbon content Wc% is less than 0.45%, the steel coil is flat in direction, the finished product thickness h is less than 3.8mm or the width reduction △B is greater than 50mm, the first-level flying shear executes the "cutting mode 3" command, and the tail shear value of the flying shear is cut according to the detected tail cutting value.

Shearing method 4: When the carbon content Wc% is less than 0.45%, the steel coil is flat and non-divided, the finished product thickness h≥6.0mm and the width reduction △B≤30mm, the tail of this type of intermediate billet adopts the flying shear tail empty passing method;

When the carbon content Wc% is less than 0.45%, the steel coil is flat without splitting, the finished product thickness h≥6.0mm and the width reduction △B≤30mm, the first-level flying shear executes the "shear mode 4" command, and the tail of the intermediate billet is not sheared.

Shearing method 5: When the carbon content Wc% is less than 0.45%, the steel coil is flat and non-divided, the finished product thickness h is less than 6.0mm or the width reduction △B is greater than 30mm, the tail of this type of intermediate billet is sheared by the flying shear tail;

When the carbon content Wc% is less than 0.45%, the steel coil is flat in direction without splitting, the finished product thickness h is less than 6.0mm or the width reduction △B is greater than 30mm, the first-level flying shear executes the "cutting mode 5" command, and the tail shear value of the flying shear is cut according to the detected tail cutting value.

Step 2: The current rolling carbon content Wc%=0.35%, the finished product thickness h=6.5mm, and the steel coil direction is not flat, the raw material width _Bc =1240mm, the finished product width _Bp =1230mm, the width reduction △B= _Bc - _Bp =1240-1230=10mm, △B≤30mm, according to the secondary automatic tail cutting method judgment conditions, the shearing method 4 is adopted, and the tail of the intermediate billet is not sheared.

Step 3: The first-stage flying shear receives the cutting mode 4 automatically set by the second-stage controller via Ethernet.

Step 4: The first-level flying shear executes the shearing mode instruction. When the intermediate billet reaches the tail shearing position of the flying shear, the flying shear tail is cut in vain according to the received flying shear shearing mode 4 instruction.

Example 3

Step 1: The secondary controller is connected to the head and tail cutting device of the primary flying shear by dividing the layers. The secondary controller automatically sets the cutting mode according to the judgment conditions. The cutting mode is as follows:

Shearing method 1: When the carbon content of the rolling intermediate billet Wc% ≥ 0.45%, since the tail of the intermediate billet is relatively low, the increase in carbon content will greatly increase the deformation resistance of the strip steel, and the fishtail of the strip steel will cause roller mark defects on the rolls. Therefore, the tail of the steel with a carbon content of Wc% ≥ 0.45% is cut;

When the carbon content of the rolled intermediate billet Wc%≥0.45%, the first-level flying shear executes the "cutting mode 1" command, and the flying shear cuts the tail of the intermediate billet according to the tail cutting detection value.

Shearing method 2: When the carbon content Wc% is less than 0.45%, the steel coil is flat in direction and divided into coils, the finished product thickness h≥3.8mm and the width reduction △B≤50mm, the tail of this type of intermediate billet adopts the flying shear tail empty passing method;

When the carbon content Wc% is less than 0.45%, the steel coil is flat in direction, the finished product thickness h≥3.8mm and the width reduction △B≤50mm, the first-level flying shear executes the "cutting mode 2" command, and the tail of the intermediate billet is not sheared.

Shearing method 3: When the carbon content Wc% is less than 0.45%, the steel coil is flat in direction and the finished product thickness h is less than 3.8mm or the width reduction △B is greater than 50mm, the tail of this type of intermediate billet is sheared by the flying shear tail;

When the carbon content Wc% is less than 0.45%, the steel coil is flat in direction, the finished product thickness h is less than 3.8mm or the width reduction △B is greater than 50mm, the first-level flying shear executes the "cutting mode 3" command, and the tail shear value of the flying shear is cut according to the detected tail cutting value.

Shearing method 4: When the carbon content Wc% is less than 0.45%, the steel coil is flat and non-divided, the finished product thickness h≥6.0mm and the width reduction △B≤30mm, the tail of this type of intermediate billet adopts the flying shear tail empty passing method;

When the carbon content Wc% is less than 0.45%, the steel coil is flat without splitting, the finished product thickness h≥6.0mm and the width reduction △B≤30mm, the first-level flying shear executes the "shear mode 4" command, and the tail of the intermediate billet is not sheared.

Shearing method 5: When the carbon content Wc% is less than 0.45%, the steel coil is flat and non-divided, the finished product thickness h is less than 6.0mm or the width reduction △B is greater than 30mm, the tail of this type of intermediate billet is sheared by the flying shear tail;

When the carbon content Wc% is less than 0.45%, the steel coil is flat in direction without splitting, the finished product thickness h is less than 6.0mm or the width reduction △B is greater than 30mm, the first-level flying shear executes the "cutting mode 5" command, and the tail shear value of the flying shear is cut according to the detected tail cutting value.

Step 2: The current rolling carbon content Wc%=0.55%. According to the determination conditions of the secondary automatic tail cutting method, shearing method 1 is adopted to shear the tail of the intermediate billet according to the tail cutting detection value.

Step 3: The first-stage flying shear receives the cutting mode 1 automatically set by the second-stage controller via Ethernet.

Step 4: The first-level flying shear executes the shearing mode instruction. When the intermediate billet reaches the tail shearing position of the flying shear, the first-level flying shear shears the tail of the intermediate billet according to the tail cutting detection value according to the received flying shear shearing mode 1 instruction.

If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art, or all or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including a number of instructions for a computer device (which can be a personal computer, a server or a network device, etc.) to perform all or part of the steps of the method described in each embodiment of the present invention. The aforementioned storage medium includes: U disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), mobile hard disk, magnetic disk or optical disk and other media that can store program codes.

Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims (5)

1. The automatic control method for the coupling of the hot continuous rolling mill fly shearing tail is characterized by comprising the following steps:

S1, communicating a secondary controller with a head and tail cutting device of a primary flying shear through dividing layers, and automatically setting a shearing mode by the secondary controller according to judging conditions;

s2, the second-level controller sends the shearing mode to the first-level flying shears, and the first-level flying shears shear according to the shearing mode;

s3, the first-level flying shears receive a shearing mode sent by the second-level controller through the Ethernet, and automatically execute shearing operation;

The judging conditions in the step S1 comprise the carbon content of the steel grade, the thickness of the finished product, the width reduction and the rolling and going directions, and the shearing mode comprises end cutting without end cutting and end cutting with end cutting;

In step S1, the secondary controller automatically sets a shearing mode according to the judging condition, and specifically includes:

in the first shearing mode, when the carbon content wc% of the rolled intermediate billet is more than or equal to 0.45%, shearing the tail of the rolled intermediate billet with the carbon content wc% of more than or equal to 0.45% according to a tail cutting detection value;

The second shearing mode is that when the carbon content wc% of the rolled intermediate billet is less than 0.45%, the steel coil is rolled smoothly, the thickness h of a finished product is more than or equal to 3.8mm, the width reduction delta B is less than or equal to 50mm, the tail of the rolled intermediate billet adopts a flying shear tail blank passing mode, and the tail of the rolled intermediate billet is not sheared;

The third shearing mode is that when the carbon content wc% of the rolled intermediate billet is less than 0.45%, the steel coil is rolled to be flat, the thickness h of a finished product is less than 3.8mm or the width reduction quantity DeltaB is more than 50mm, the tail of the rolled intermediate billet is sheared according to the tail cutting detection value by adopting a flying shear tail shearing mode;

The shearing mode IV is that when the carbon content wc% of the rolled intermediate billet is less than 0.45%, the steel coil is not coiled and leveled, the thickness h of a finished product is more than or equal to 6.0mm, the width reduction delta B is less than or equal to 30mm, the tail of the rolled intermediate billet adopts a flying shear tail blank passing mode, and the tail of the rolled intermediate billet is not sheared;

And fifthly, when the carbon content wc% of the rolled intermediate billet is less than 0.45%, the steel coil is fed to a non-coil-separating level, the thickness h of a finished product is less than 6.0mm or the width reduction quantity DeltaB is more than 30mm, a flying shear tail shearing mode is adopted for the tail of the rolled intermediate billet, and the tail of the rolled intermediate billet is sheared according to a tail cutting detection value.

2. The automatic control method for the fly-cutting tail coupling of the hot continuous rolling mill according to claim 1, wherein in the step S2, the first-stage fly-cutting is cut according to a cutting mode, and the method specifically comprises the following steps:

when the carbon content wc% of the rolled intermediate billet is more than or equal to 0.45%, the first-stage flying shear performs a first shearing mode, and the first-stage flying shear shears the tail of the intermediate billet according to a tail cutting detection value;

When the carbon content wc% of the rolled intermediate billet is less than 0.45%, the steel coil is rolled to be flat, the thickness h of a finished product is more than or equal to 3.8mm, the width reduction delta B is less than or equal to 50mm, the first-stage flying shears execute a second shearing mode, and the first-stage flying shears do not shear the tail part of the intermediate billet;

When the carbon content wc% of the rolled intermediate billet is less than 0.45%, the steel coil is rolled to be flat, the thickness h of a finished product is less than 3.8mm or the width reduction amount DeltaB is more than 50mm, the first-stage flying shears execute a shearing mode III, and the first-stage flying shears shear the tail of the intermediate billet according to a tail cutting detection value;

When the carbon content wc% of the rolled intermediate billet is less than 0.45%, the steel coil is rolled to be non-split and smooth, the thickness h of a finished product is more than or equal to 6.0mm, the width reduction quantity DeltaB is less than or equal to 30mm, the first-stage flying shears execute a shearing mode IV, and the first-stage flying shears do not shear the tail part of the intermediate billet;

When the carbon content wc% of the rolled intermediate billet is less than 0.45%, the steel coil is rolled to be flat without separation, the thickness h of a finished product is less than 6.0mm or the width reduction delta B is more than 30mm, the first-stage flying shears execute a shearing mode five, and the tail of the intermediate billet is sheared by the first-stage flying shears according to a tail cutting detection value.

3. The automatic control method for the fly-cutting tail coupling of the hot continuous rolling mill according to claim 1, wherein in the step S3, the first-stage fly-cutting receives the cutting mode sent by the second-stage controller through the ethernet, and the automatic cutting operation is performed, and specifically includes:

when the rolled intermediate billet reaches the shearing position of the tail part of the flying shear, shearing control is automatically carried out according to the received shearing mode.

4. A storage medium comprising a stored program, wherein the program, when run, performs the hot continuous rolling mill fly-to-tail coupling automatic control method of any one of claims 1 to 3.

5. An electronic device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, wherein the processor is operative to perform the hot continuous rolling mill fly-to-tail coupling automatic control method of any one of claims 1 to 3 by the computer program.