CN101842172A

CN101842172A - Discharging cryogen onto work surfaces in a cold roll mill

Info

Publication number: CN101842172A
Application number: CN200880113546A
Authority: CN
Inventors: 林民发; M·D·兰伊; G·普利克特; R·J·爱德华兹; H·希拉克; D·本尼威茨
Original assignee: Air Products and Chemicals Inc
Current assignee: Air Products and Chemicals Inc
Priority date: 2007-08-28
Filing date: 2008-08-27
Publication date: 2010-09-22
Also published as: EP2197600A1; EP2197600A4; WO2009029659A1; MX2010002066A; US20120000213A1; BRPI0815930A2; CA2697841A1

Abstract

The present invention is directed to a method and apparatus for adjusting the amount of cryogen delivered to a mill stand (1) using a non-optical sensor (16a) to measure at least one operating parameter selected from the group consisting of roll stand parameters, rolled product parameters, and cryogen parameters. Output signals, are generated by the non-optical sensor and a controller (17) calculates numeric values based on the signals. When the calculated numeric values reach a predetermined set point value that correlates with mill stand temperature, the flow of cryogen is adjusted to disperse a desired amount of cryogenic fluid to said mill stand (1) to control rolling temperature.

Description

Refrigerant is released on the working face in the cold-rolling mill

Cross reference to related application

The application requires in the U.S. Provisional Application No.60/968 of submission on August 28th, 2007,479 right, and the whole disclosure content of described U.S. Provisional Application is cited as a reference at this.

Technical field

The present invention relates to a kind of being used for to being applied to working roll, roll gap in the cold rolling manipulation process or being in the method and apparatus that the amount of the refrigeration cooling agent on the rolled products in the mill stand is controlled.The adjusting that the amount of refrigerant is carried out is to carry out under in response to the situation of sensor output signal, the arbitrary operational factor in the operational factor that described sensor output signal is represented to record or the combination of described parameter, the described operational factor that records comprises mill stand parameter, rolled products parameter, ambiance condition and refrigerant parameter.

Background technology

Cold rolling is a kind ofly to be used to make metal sheet, band or to have specific mechanical character such as surface finish and have the process of the profile that is in the specific dimensions in the specific dimensions tolerance limit.In the cold rolling manipulation process, plate or band pass through between two working rolls to commentaries on classics, described two working rolls to commentaries on classics are adjusted to predetermined roll gap setting, reach the desired thickness by the roll gap decision of described setting so that rolled products produces plastic deformation.Cold rollingly produce heat in response to the required power of band distortion and in response to the friction between working roll and the band.If the heat accumulation that is produced is in working roll and do not add control and can cause temperature to be higher than acceptable cold rolling temperature level.Acceptable temperature can change based on metal types, stripe size, cold rolling parameter and surface finish.Excessive cold rolling temperature can cause: (i) rolled products character changes, and as surface oxidation, (ii) is subjected to the lip-deep band of hot-rolling to cause producing defective and the (iii) oxidation of working roll in strip face owing to being attached to.This problem can reduce surface quality.

In the past, the technical staff carried out multiple trial prevent to gather too much heat in the mill stand and alleviate working roll and band between friction, these trials comprise with cooling agent and lubricant as oil, water or emulsion overflow submergence working roll and product.Yet, for many liquid,, can bring negative effect if fail from the product surface of completion, to remove these liquid rapidly.For example, if be steel by cold rolling metal, the water or the emulsion that then are retained on the band can cause producing oxidation or getting rusty.In addition, only removing the oiliness residue can increase production cost and cause environmental problem.For high-quality surface finish, sometimes can use dried rolling to avoid tackling the problems referred to above.Sometimes also can select to use rolling dry run, this is because this process will make rolling band have the finish of brighter (brighter).When being rolled drying, must limit production speed so that avoid gathering too much heat.In other cases, utilize MQL so that alleviate friction.Yet, even for MQL,, be necessary usually to stop the operation of rolling so that working roll is periodically cleaned in order to keep producing band with excellent surface finish, could remove the heat that gathers.

The technical staff has made many effort recently so that find other optional cooling agent or cleaning method, and use therein inert gas is in than the lower temperature of rolled products temperature by roll gap.Inert gas can gaseous form or liquid form exist, promptly refrigerant perhaps exists mutually to mix.The inert gas that described temperature is lower provides the another kind of optionally cooling agent beyond oil removing, water or the emulsion cooling agent.When in rolling operating process, using inert gas, because not residual any liquid on the band, therefore also prevented to stay the etching problem that residual water on the band or emulsion bring as cooling agent.In addition, use inert gas to provide the cleaning effect as working roll and strip face, this has especially prolonged the service life of working roll.

Under the applicable cases of using the refrigeration cooling agent, owing between rolled products and refrigerant, there is the higher temperature difference, therefore crosses cold-peace and owe cold and all can bring serious problems.The technical staff has made and to have made great efforts and based on the flow velocity of regulating cryogenic coolant from the temperature survey of roller surface.Yet the measurement of temperature is normally implemented with leucoscope, and described leucoscope is positioned on the band approaching side of mill stand, and the stream of refrigerant is controlled so that the milling train temperature is remained in the particular range.

The problem of this scheme is: using the variations in temperature of optics measured place in typical cold rolling temperature scope is to be difficult to carry out and insecure.Working roll be crooked or be convex surface and possess high reflection, the emissivity that makes leucoscope measure is lower and unstable.In addition, all will influence optical readings in the normal cold rolling temperature scope from any reflection of exterior lighting equipment.The condensation that refrigerant caused that the air that is in the space between leucoscope and work roll surface is cooled off also can cause temperature reading to be inaccurate.

The way that substitutes leucoscope with the thermo-contact sensor is also infeasible.With feeler surveying work roll surface temperature be difficult to carry out and this contact measurement often also unreliable.The technical staff has also proposed the scheme with thermocouple measurement work roll surface temperature, but this scheme is also also unreliable and be difficult to carry out.For example, the internal heat galvanic couple is positioned near the work roll surface from engineering viewpoint be exactly complicated, be difficult to carry out and comparatively expensive.Say occasionally for this thermoelectricity, can simplify its installation process by locating them in roller the way of darker position, be about to they be positioned at and the roller surface at a distance of the position of farther distance.Yet buried thermocouple will cause responding impaired, thereby make the signal of generation be not enough to cool off well control.

Except the temperature survey defective of prior art, the flow velocity of refrigeration cooling agent is accurately regulated also existing problems in real time with conventional method.

Therefore, the disclosed refrigerant cooling control appliance of prior art is infeasible and can't be delivered to the cold-rolling mill support by the refrigerant that quantity is accurate and controlled.Therefore, in affiliated technical field, generally need to provide a kind of like this refrigerant induction system, described system enhancement temperature survey and improved the accuracy of the mass velocity of the refrigerant that is transported to the cold-rolling mill support.

The typical prior art in this field comprises that Deutsche Bundespatent No.DE 199 53 280, publication number are No.WO2006/074, the PCT patent of 875A1 and U.S. Patent No. 6,675,622.

Summary of the invention

In one aspect, the present invention includes a kind of method, described method comprises at least one operational factor of measuring cold-rolled process, the hot state of each operational factor in described at least one operational factor and the element of described cold-rolled process is relevant and at least in part based on the operation of the measurement control refrigerant cooling device of described at least one operational factor.

In another aspect, the present invention includes a kind of cooling and roll the equipment that process is used, described equipment has at least one sensor, each sensor in described at least one sensor is suitable for measuring the operational factor of described cold-rolled process, and described operational factor is relevant with the hot state of the element of described cold-rolled process.Described equipment also comprises the refrigerant cooling device with the adjustable intensity of releasing, and controller, described controller is configured so that to receive from described at least one signal of sensor and is programmed so that the intensity of releasing of regulating described refrigerant cooling device based on the described output signal that receives from described at least one sensor at least in part.

In aspect another, the present invention includes a kind of method, described method comprises loading force of measuring on the roller that acts on cold-rolled process and the operation of controlling the refrigerant cooling device at least in part based on described load force measurement.

Description of drawings

Figure 1A-Fig. 1 D shows and is positioned so that measure a plurality of sensors of mill stand parameter;

Fig. 1 E shows and is positioned so that measure the combination of at least two different sensors of mill stand parameter;

Fig. 2 A-Fig. 2 D shows and is positioned so that measure a plurality of sensors of rolled products parameter;

Fig. 2 E shows and is positioned so that measure the combination of at least two different sensors of rolled products parameter;

Fig. 3 A-Fig. 3 B shows and is positioned so that measure a plurality of sensors of refrigerant parameter;

Fig. 3 C shows and is positioned so that measure the combination of at least two different sensors of refrigerant parameter;

Fig. 4 A show be positioned in case the sensor of measuring the mill stand parameter be positioned so that measure the combination of the sensor of rolled products parameter; With

Fig. 4 B show be positioned in case measure the mill stand parameter sensor, be positioned so that measure the sensor of rolled products parameter and be positioned so that measure the combination of the sensor of refrigerant parameter.

The specific embodiment

Use the refrigeration cooling agent, i.e. liquid nitrogen or other suitable liquid gas or solid state gas can be eliminated the problem that cooling agent Ru Shui, oil and the emulsion of early stage use bring.Yet refrigerant also has problems, that is: the amount of controlling the refrigerant that is transported to work roll surface and rolled products surface (being known as working face hereinafter) is very crucial to avoid owing cold or cold excessively.In the past, based on the cooling agent of water and oiliness cooling agent simply overflow enter in the zone of roll gap and the excessive supply of cooling agent has produced self-regulating steady state thermal state at working face, thereby in final rolled products, produced required character.

Yet, when cooling agent is refrigerant, thereby can't carry out self-regulation to the working face temperature by the mode of excessive supply coolant overflow submergence working face, this is because excessive refrigerant will produce not controlled running status.For example, excessive refrigerant has formed bigger vaporous cloud, has covered the observability of mill stand, and may cause producing in the milling train operation area atmosphere of anoxic.In addition, cross cold meeting and reduce the plasticity of rolled products, thereby the finished product product quality is caused negative effect.Cross and coldly also produced excessive condensation, thereby brought blemish or etching problem at plate or strip face.Therefore, key is accurately to control the amount of the refrigerant that is transported to mill stand to avoid occurring the problems referred to above.

Yet, as mentioned above, attempt to make refrigerant flow speed to be proved to be inaccurate and infeasible at present based on the trial of the temperature reading that provides by pyrometer.Except the direct measured temperature on rolling stock surface, the present invention has also used other operational factor individually and/or with this direct measured temperature combinedly, determines required refrigerant flow speed.The temperature correlation of many measurement parameters and rolling stock.Be appreciated that parameter with rolling stock temperature correlation does not comprise the direct measured value of rolling stock temperature.

Just as used hereinly, term " refrigerant cooling device (cryogenic coolingdevice) " is intended to represent being designed of any kind so that release out or eject the equipment or the device of any kind of (liquid form, mix phase form or gaseous form) refrigeration fluid.Typical refrigerant cooling device includes, but not limited to refrigerant jet pipe, independent refrigerant nozzle and comprises the device of refrigerant nozzle array.

Referring to Figure 1A to Fig. 1 D, there is shown a plurality of refrigerant induction system 10a that are used for mill stand 1.Each refrigerant induction system 10a comprises and is positioned in the appropriate position so that measure the different sensors of the operational factor of cold-rolled process.In each embodiment, mill stand 1 comprises that a pair of quilt relatively is provided with and is provided so that working roll 2a and the 2b with predetermined roll gap 3, and described mill stand preferably includes, but might not comprise,

backing roll

4a and 4b, described backing roll keep being distributed in working roll and rolled products 5 is constant with the roller power that receives on the band approaching side 6 that enters product.

Referring to Figure 1A, refrigerant induction system 10a comprises hold-up tank 11, and described hold-up tank comprises and is in-70 ℃ or the refrigerant supplies under the low temperature more, as liquid nitrogen or other liquid gas.In a preferred embodiment, pipeline or conduit 12 are attached on the hold-up tank 11 and conduit 12 comprises the first far-end 13a and the second far-end 13b that is positioned at the position that the band approaching side 6 with mill stand is close.Each far-

end

13a and 13b comprise

refrigerant cooling device

14a and 14b, and described refrigerant cooling device is at the width that is suitable for the refrigerant distribution of controlled quatity is extended through to the position on the working face of mill stand 1 mill stand or band.In some applicable cases, each far-

end

13a and 13b are placed on the band exit of roll gap 3 and clean effect so that improve.Although refrigerant induction system described in the invention comprises

refrigerant cooling device

14a and 14b, be appreciated that any being suitable for all is suitable for the device that the refrigerant of controlled quatity is released on the working face.For example, can use the refrigerant jet pipe with elongated discharging slot, described discharging slot extends through mill stand width or strip width, perhaps also can use the device with array that independent controlled nozzle forms.

In Figure 1A illustrated embodiment, the mill screw 15 of regulating the milling train gap comprises load transducer 16a.Mill screw 15 is operated so that produce such milling train gap, thereby satisfies the demand that produces metal sheet or band with predetermined engineering properties, surface finish and size, and load transducer 16a produces the continuous output signal of expression roller power.Load transducer 16a is connected to controller 17, and as programmable logic controller (PLC) (PLC), described controller is operated being assemblied in the conduit 12 and at the control valve 18 of the position between hold-up tank 11 and refrigerant cooling device 14a and 14b.Controller 17 records are from the output signal of load transducer 16a.

Another kind of optional mode is, load transducer 16b can be positioned so that measures roller power on the bearing 19, and described bearing supports lower support roller 4b.With load transducer 16a similarly, load transducer 16b is connected to controller 17, described controller record is from the input traffic of load transducer 16b.

From the numerical value of load transducer 16a and/or 16b be used to determine when should operation control valve 18 so that regulate the refrigerant mass flow that flows to mill stand 1 from hold-up tank 11, and as impliedly, refrigerant induction system 10a can comprise more than one load transducer, for example, but be not limited to, comprise load transducer 16a and 16b, thus controller 17 is programmed so that provide mean values based on the continuous input traffic of measuring from a plurality of load transducers.

Because roller power can be relevant with the hot state that exists in the mill stand, and because roller power is subjected to the influence of rolling temperature, so roller power measured value is used as feedback signal and makes it be in the required mass flow scope or be under the required mass flow set point so that accurately regulate cryogen flow.Therefore, be under situation, to carry out to being dispersed on the working face or being disperseed to enter the control that the intensity of releasing of the refrigerant in the roll gap carries out in response to the numerical value of measuring from load transducer.For example, the roller force rate of measuring when numeric representation exceeds about 15% the time without any the roller power of refrigerant, then controller 17 transmits signals so that control valve 18 is operated, thereby reduces injected or be distributed to the mass velocity of the refrigerant on working face or the roll gap, returns preferable range until numerical value.The refrigerant mass flow pair roller power of being regulated is controlled, and thus the rolling temperature in the mill stand is regulated.

As the another kind of optional mode of any control valve of control valve described herein, can use the throttle air system so that the mass flow of control refrigerant.In the U.S. Patent application No.11/846 that on August 28th, 2007 submitted to, 116 provide the example of throttle air system, and the whole disclosure content of described U.S. Patent application is cited as a reference at this.In not using the refrigerant cooling device of throttle air, the intensity of releasing of this cooling device mainly is the function by the refrigerant flow speed of refrigerant cooling device.In the refrigerant cooling device that does not use throttle air controlled discharge intensity, the intensity of releasing of cooling device be the function of refrigerant flow speed be again function by the throttle air flow velocity of refrigerant cooling device.

Referring to Figure 1B, in this embodiment, refrigerant induction system 10a is suitable for the lip-deep stress state of surveying work roller so that control flows to the cryogen flow of mill stand 1.The refrigerant flash quenching provides the effect that causes producing the compressive residual stress state on hardened face knownly.In this embodiment, use can determine that the one or more X-ray analysis device 20a and the 20b of the stress state in the surface of

working roll

2a, 2b indicate the amount of stress that occurs in the cold rolling manipulation process.

Analyzer 20a and 20b produce the output signal of expression residual stress, and this signal receives as continuous data stream controlled device 17.Measure similarly with above-mentioned roller power, controller 17 uses from the numerical value of the input traffic of

analyzer

20a and 20b and in response to set-point value one or

more control valves

18 and 18a is operated, described set-point value is relevant with target measurement stress, described target measurement stress is further relevant with temperature required state in the mill stand 1, thereby the mass flow that flows to the liquid nitrogen of

refrigerant cooling device

14a and 14b from hold-up tank 11 is regulated so that the refrigerant of controlled quatity is distributed on the working face.

In the present embodiment, shown in Figure 1B, be provided with two control valves 18 and 18a.Each control valve is communicated with controller 17, thereby makes that can spray thing to the refrigerant from

refrigerant cooling device

14a and 14b regulates separately.In addition, as mentioned above, this numerical value can reflect that the mean value of inlet flow of (from a plurality of x ray analyzers) a plurality of stress measurements is so that improve accuracy.

In Fig. 1 C, at least one sensor 21a and/or 21b are set among the refrigerant induction system 10a so that the resistance among surveying work roller 2a and the 2b.Sensor 21a and/or 21b can be known any other appropriate device that is used for measuring resistance in ohmmeter or affiliated field, and with the front similarly,

sensor

21a and 21b produce the output signal of expression working roll resistance.Controller 17 receives input traffics and at least one control valve 18 is operated so that

refrigerant cooling device

14a and 14b are distributed to the refrigerant of required controlled quatity on the working face from hold-up tank 11 in response to set-point value.The numerical value of working roll resistance is relevant with resistance states on the roller, described resistance states is further relevant with state of temperature in the mill stand 1, and this numerical value can comprise the mean value of the data that send out from

sensor

21a and 21b or comprise based on single-sensor, 21a or 21b, value.

Referring to Fig. 1 D, at least one sensor 22a and/or 22b are set among the refrigerant induction system 10a so that measure rolling mill speed, for example gait of march of the speed of

rotary work roller

2a and 2b and/or rolled products.Sensor 22a and/or 22b can comprise known any other the suitable measurement mechanism of current meter or affiliated field, and with the front similarly,

sensor

22a and 22b produce the output signal of expression rolling mill speed.Controller 17 receives and enters data flow, and in response to set-point

value control valve

18a and 18b is controlled, thereby makes

refrigerant cooling device

14a and 14b that the refrigerant of required controlled quatity is distributed on the working face from hold-up tank 11.

In measuring the example of rolling mill speed, the numerical value that records is not relevant with state of temperature in the mill stand 1.Yet rolling mill speed is directly related with the milling train output.Therefore, the cryogen flow that flows to refrigerant

cooling device

14a and 14b from hold-up tank 11 can become certain ratio or proportional/control relatively with rolling mill speed, and this ratio or ratio/relevant control can be direct linear functional relation or even the more complicated function that is obtained by experience.In addition, numerical value can comprise based on by a plurality of sensors, as

sensor

22a and 22b, and the mean value of the data of transmission or independent value.

Referring to Fig. 1 E, the sensor of measuring different operational factors is combined among the refrigerant induction system 10a so that improve the accuracy of rolling temperature control.Induction system had both comprised

X-ray analysis device

20a and 20b so that measure remaining roller stress, comprised

sensor

22a and 22b again so that measure rolling mill speed.The output signal that is produced by different sensors is transferred into controller 17, and described controller is programmed so that input traffic is combined into the numerical value that calculates.When the numerical value that calculates during corresponding to set-point value, controller 17 transmits signals so that at least one control valve 18 and/or 18a operates and the refrigerant of controlled mass flow is transported to refrigerant

cooling device

14a and 14b and is dispersed on the working face of mill stand 1 from hold-up tank.

Referring to Fig. 2 A to Fig. 2 D, there is shown typical refrigerant induction system 10b, wherein each refrigerant induction system 10b has different non-optical sensor, and described sensor is positioned in the appropriate position that is used to measure the rolled products parameter.In this group embodiment, mill stand 1 comprises working

roll

2a and 2b, roll gap 3, preferred but might not comprise

backing roll

4a and 4b and be used to receive the band approaching side 6 of rolled products 5.

Referring to Fig. 2 A, refrigerant induction system 10b is similar to refrigerant induction system 10a, and comprises the hold-up tank 11 that comprises refrigerant such as liquid nitrogen or similar refrigerant, extends to the far-end 13a that is positioned at the position that is close with band approaching side 6 and conduit 12 and refrigerant cooling device 14a and the 14b of 13b.In some applicable cases, far-

end

13a and 13b are positioned at the band outlet and go up so that improve the cleaning effect.Yet in this embodiment, refrigerant induction system 10b comprises at least one non-optical sensor of the output signal that produces the temperature in expression rolled metal plate or the band.In this embodiment, sensor is

thermocouple

23a and 23b, yet, the known any suitable non-optical temperature measuring equipment in field under also can under the situation that does not depart from the scope of the invention, using.The continuous input traffic that controller 17 receives from

thermocouple

23a and 23b, and be programmed so that set-point value is made response by the mode that transmits signal, described signal is operated at least one control valve 18, is distributed on the working face in the mill stand 1 thereby make

refrigerant cooling device

14a and 14b receive from the refrigerant of the controlled mass flow of hold-up tank 11 and with it.

Referring to Fig. 2 B, in this embodiment, refrigerant induction system 10b measures the stress state in the surface of rolled metal plate or rolled products 5 so that the refrigerant of required mass flow is supplied to mill stand 1.As mentioned above, the refrigerant flash quenching provides the effect that causes producing the compressive residual stress state on hardened face knownly.Therefore, can determine that one or more X-ray analysis device 24a of the stress state in the rolled products surface and the outlet side 6a that 24b is positioned in mill stand go up so that indication appears at the amount of stress in the rolled products 5 in the cold rolling manipulation process.Analyzer 24a and 24b have produced the output signal of the residual stress in the expression rolled products, and this signal is transferred into controller 17 as continuous data stream.With the above-mentioned stress measurement that is used for the mill stand parameter similarly, controller 17 uses numerical value from input traffic so that in response to set-point value one or

more control valves

18 and 18a are operated, described set-point value is relevant with state of temperature in the mill stand 1, thereby the mass flow of the liquid nitrogen that flows to refrigerant

cooling device

14a and 14b from hold-up tank 11 is accurately regulated so that controlled refrigerant is sprayed thing or cryogen flow is distributed on the working face.

Referring to Fig. 2 C, in this embodiment, refrigerant induction system 10b comprises the sensor that can measure strip contours such as shape and flatness.In this embodiment, sensor comprises X ray shapometer measuring device 25a and 25b.Yet, other optional strip contours sensor can comprise, but be not limited to, Laminographic meter, radio isotope traverse meter or shapometer measuring device, wherein band is being pulled on the segmented roll and portion's section of roller comprises measuring and is applied to the radial load on this section so that the sensor of the signal relevant with the bar belt shape is provided at a certain angle.Available multiple different measurement device strip contours also produces output signal, and described output signal can be used for regulating the mass flow that flows to the refrigerant of

refrigerant cooling device

14a and 14b from hold-up tank 11.In this example,

meter

25a and 25b produce the output signal of expression strip contours and transmit signals to controller 17, the numerical value that its middle controller 17 calculates from input traffic.When the value that calculates corresponding to the set-point value of mill stand temperature correlation the time, controller 17 transmits signals so that operate at least one control valve 18, thereby will be passed to refrigerant

cooling device

14a and 14b from the liquid nitrogen of the required controlled mass flow of hold-up tank 11.The refrigerant that is dispersed to the controlled quatity on the working face is reduced to Min. with the change of shape in the rolled products, and constant relatively shape has been controlled the temperature of mill stand.

In Fig. 2 D, refrigerant induction system 10b comprises at least one surface roughness meter 26a and/or 26b, for example contacts meter or laser metrology device, so that measure roughness or texture (Ra) along rolled products 5 surfaces.As top,

meter

26a and 26b produce the output signal of expression along the Ra value on rolled products 5 surfaces.

Another kind of optional mode is, can use the videoscanning system, and for example the surface inspection system of being produced by the Parsytec AG of Aachen, Germany is determined roughness.Roughness concentration is relevant with the hot state and the cleannes of working roll in being present in mill stand 1, and controller 17 receives input traffic, controller 17 evaluations thus, and reaching under the situation of set-point value, controller 17 is operated

control valve

18 and 18a in response to described set-point value, thereby make

refrigerant cooling device

14a and 14b receive the refrigerant from the controlled mass flow of hold-up tank 11, described refrigerant is dispersed on the working face in the support 1 and keeps the cleaning of work roll surface.

In Fig. 2 E illustrated embodiment, at first stress analysis device 24a shown in Fig. 2 B and/or 24b combine with roughmeter measuring device 26a shown in Fig. 2 D and 26b so that the refrigerant induction system 10b with different non-optical sensor layouts is provided, thereby determine the different operational factors in the rolled products 5.Different sensors produces its corresponding output signal, and described output signal makes up in controller 17, and controller 17 is programmed so that based on the input traffic evaluation that makes up.When the value that calculates during corresponding to the predetermined set point value, controller 17 transmits signal so that

control valve

18 and 18a are operated, thereby the refrigerant of required mass flow is sent to refrigerant

cooling device

14a and 14b from hold-up tank 11, and wherein refrigerant is dispersed on the working face in the mill stand 1.

In another group embodiment, shown in Fig. 3 A to Fig. 3 C, there is shown a plurality of refrigerant induction system 10c, described refrigerant induction system has the additional different sensors that is suitable for measuring the operational factor that is associated with the refrigerant of being carried by hold-up tank 11.Each refrigerant induction system embodiment 10c comprises mill stand 1, described mill stand have pair of

opposing working roll

2a and 2b, be set so that produce roll gap 3,

backing roll

4a and 4b and the band approaching side 6 of required cold rolled metal plate or rolled products 5.

Especially referring to Fig. 3 A, refrigerant induction system 10c comprises at least one

sensor

27a and 27b, for example, but be not limited to, be used for measuring the thermocouple of the condensation situation 28 of atmosphere, described condensation situation is because the humidity steam cooling in the position that is close with the working face that receives the refrigerant cooling agent produces.

Sensor

27a and 27b produce the output signal that condensate is measured in expression, and controller 17 receives input traffic.When the value that receives during corresponding to set-point value, controller 17 transmits signal so that at least one control valve 18 is operated, thereby make

refrigerant cooling device

14a and 14b receive the refrigerant from the controlled mass flow of hold-up tank 11, described refrigerant is dispersed on the working face in the mill stand 1.

In Fig. 3 B, refrigerant induction system 10c comprises at least one refrigerant temperature sensor 29, and described sensor is assembled in the conduit 12 so that measure the temperature of the refrigerant that is transported to refrigerant cooling device 14a and 14b.Controller 17 receives input temp and measures numerical value stream.When temperature value during corresponding to the set-point value rolling temperature in the mill stand, controller 17 transmits signals so that at least one control valve 18 is operated, thereby makes

refrigerant cooling device

14a and 14b that the refrigerant of controlled quatity is distributed on the working face in the mill stand 1.

Referring to Fig. 3 C, the sensor 27a of

monitoring condensation situation

28 and 27b and refrigerant temperature sensor 29 are combined so that the refrigerant induction system 10c with different sensors layout is provided, thereby determine the different operational factors relevant with refrigerant.These different sensors produce its corresponding output signal, and described signal makes up in controller 17, and controller 17 is programmed so that based on the input traffic evaluation that makes up.When the value that calculates during corresponding to default point value, controller 17 transmits signal so that at least one control valve 18 is operated, thereby the refrigerant of required mass flow is sent to refrigerant

cooling device

14a and 14b from hold-up tank 11, and wherein said refrigerant is dispersed on the working face in the mill stand 1.

Fig. 4 A shows refrigerant induction system 10d, and described system has the combination of the sensor that is used to measure milling train machine parameter and the sensor that is used to measure the rolled products parameter.In this example, induction system 10d comprises the X-ray analysis device 20a shown in Figure 1B and 20b and at least one the surface roughness meter 26a and/or 26b shown in Fig. 2 D of one or more long-range installations.Yet being appreciated that can be under the situation that does not depart from the scope of the invention, and any non-optical sensor that can measure mill stand parameter and rolled products parameter is combined among the induction system 10d.Different sensors produces its corresponding output signal, and described output signal makes up in controller 17, and controller 17 is programmed so that by different input traffic evaluations.When the value that calculates during corresponding to default point value, controller 17 transmits signal so that

control valve

18 and 18a are operated, thereby the refrigerant of controlled mass flow is sent to refrigerant

cooling device

14a and 14b from hold-up tank 11, and wherein accurately the refrigerant of amount is dispersed on the working face in the mill stand 1.

Fig. 4 B shows refrigerant induction system 10e, and described system has the sensor and the combination that is used to measure the sensor of rolled products parameter and be used to measure the sensor of refrigerant parameter that is used to measure milling train machine parameter.In this example, induction system 10e comprises the X-ray analysis device 20a shown in Figure 1B and 20b, at least one surface roughness meter 26a and/or 26b and at least one

refrigerant temperature sensor

29a, 29b shown in Fig. 3 B shown in Fig. 2 D of one or more long-range installations.Being appreciated that can be under the situation that does not depart from the scope of the invention, and any non-optical sensor that can measure mill stand parameter, rolled products parameter and refrigerant parameter is combined among the induction system 10e.Different sensors produces its corresponding output signal, and described output signal makes up in controller 17, and controller 17 is programmed so that by different input traffic evaluations.When the value that calculates during corresponding to default point value, controller 17 transmits signal so that

control valve

cooling device

Thereby, invention has been described with other optional embodiment in conjunction with the preferred embodiments of the present invention above, and these embodiment have realized each purpose in the invention described above purpose and the method and apparatus of the rolling temperature that is used for controlling the cold rolling mill support is provided.Certainly, one of ordinary skill in the art can be contemplated to multiple variation, modification and change by instruction of the present invention under the situation that does not depart from expection spirit and scope of the present invention.The present invention is intended to only be subjected to the restriction of appended claims.

Claims (according to the modification of the 19th of treaty)

1. method, described method comprises:

Measure at least one operational factor of cold-rolled process, each operational factor in described at least one operational factor is relevant with the hot state of the rolling stock of described cold-rolled process; With

At least in part based on the intensity of releasing of at least a portion of the measuring and adjusting refrigerant cooling device of described at least one operational factor.

2. method according to claim 1, wherein said regulating step comprise at least in part the refrigerant of setting described refrigerant cooling device based on the measurement of described at least one operational factor intensity of releasing.

3. method according to claim 2, comprise that further the each measurement with value and described at least one operational factor associates, wherein said regulating step further comprises: if described value drops on beyond the preset range, then regulate the refrigerant of described refrigerant cooling device and release intensity so that described value is placed in the described preset range.

4. method according to claim 1, wherein said measuring process comprise described at least one operational factor of measuring described cold-rolled process, and each operational factor in described at least one operational factor is relevant with the hot state on the surface of described rolling stock.

5. method according to claim 1, wherein said measuring process comprises described at least one operational factor of measuring described cold-rolled process, and each operational factor in described at least one operational factor is selected from the cohort that comprises following parameter: the lip-deep resistance of roller, the lip-deep stress of described roller and the lip-deep roughness of described roller.

6. method according to claim 1, wherein said measuring process comprises described at least one operational factor of measuring described cold-rolled process, and each operational factor in described at least one operational factor is selected from the cohort that comprises following parameter: the lip-deep resistance of rolling stock, the lip-deep stress of described rolling stock, the thickness of described rolling stock and the flatness of described rolling stock.

7. method according to claim 1, wherein said measuring process comprise the temperature of using non-optical sensor to measure rolling stock.

8. method according to claim 1, wherein said regulating step comprise the operation of controlling the refrigerant injection apparatus at least in part based on the measurement of described at least one operational factor.

9. method according to claim 1, wherein said regulating step comprise that the mean values that calculates based on the measurement by described at least one operational factor at least in part controls the operation of refrigerant cooling device.

10. method according to claim 1, wherein said measuring process comprise at least one operational factor of the described cold-rolled process of continuous measurement.

11. a cooling rolls the equipment that process is used, described equipment comprises:

At least one sensor, each sensor in described at least one sensor is suitable for measuring the operational factor of described cold-rolled process, and described operational factor is relevant with the hot state of the element of described cold-rolled process;

Refrigerant cooling device with the adjustable intensity of releasing; With

Controller, described controller are configured so that to receive from described at least one signal of sensor and are programmed so that the intensity of releasing of regulating described refrigerant cooling device based on the described output signal that receives from described at least one sensor at least in part.

12. equipment according to claim 11, wherein said controller is programmed so that described output signal is become value, thereby and is programmed so that regulate the refrigerant of the described refrigerant device intensity of releasing under described value drops on situation beyond the preset range described value is placed in the described preset range.

13. equipment according to claim 11, wherein said operational factor is selected from the cohort that comprises rolling stock and working roll.

14. equipment according to claim 11, wherein said operational factor is selected from the cohort that comprises following parameter: the lip-deep resistance of roller, the lip-deep stress of described roller and the lip-deep roughness of described roller.

15. equipment according to claim 11, wherein said operational factor is selected from the cohort that comprises following parameter: the lip-deep resistance of rolling stock, the lip-deep stress of described rolling stock, the thickness of described rolling stock and the flatness of described rolling stock.

16. equipment according to claim 11, wherein said operational factor comprises the loading force that acts on the working roll that is used for described cold-rolled process.

17. equipment according to claim 11, wherein said controller are programmed by the described output signal calculating mean value and the described intensity of releasing of regulating described refrigerant cooling device at least in part based on described mean value.

18. equipment according to claim 11, wherein said at least one sensor is suitable for the described operational factor of continuous measurement.

19. a method, described method comprises:

Measurement acts on the loading force on the roller of cold-rolled process; With

At least in part based on the intensity of releasing of at least a portion of the measuring and adjusting refrigerant cooling device of described loading force.

20. method according to claim 19, wherein said measuring process comprise that the output signal measurement based at least one load transducer acts on the loading force on the roller of cold-rolled process.

Claims

1. method, described method comprises:

Control the operation of refrigerant cooling device at least in part based on the measurement of described at least one operational factor.

2. method according to claim 1, wherein said control step comprise at least in part the refrigerant of setting described refrigerant cooling device based on the measurement of described at least one operational factor intensity of releasing.

3. method according to claim 2, comprise that further the each measurement with value and described at least one operational factor associates, wherein said control step further comprises: if described value drops on beyond the preset range, then regulate the refrigerant of described refrigerant cooling device and release intensity so that described value is placed in the described preset range.

8. method according to claim 1, wherein said control step comprise the operation of controlling the refrigerant injection apparatus at least in part based on the measurement of described at least one operational factor.

9. method according to claim 1, wherein said control step comprise that the mean values that calculates based on the measurement by described at least one operational factor at least in part controls the operation of refrigerant cooling device.

Refrigerant cooling device with the adjustable intensity of releasing; With

19. a method, described method comprises:

Measurement acts on the loading force on the roller of cold-rolled process;

Control the operation of refrigerant cooling device at least in part based on described load force measurement.