CN116274407A - Method, device, medium and continuous rolling unit for preventing strip steel from deviating - Google Patents

Method, device, medium and continuous rolling unit for preventing strip steel from deviating Download PDF

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Publication number
CN116274407A
CN116274407A CN202310186961.5A CN202310186961A CN116274407A CN 116274407 A CN116274407 A CN 116274407A CN 202310186961 A CN202310186961 A CN 202310186961A CN 116274407 A CN116274407 A CN 116274407A
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China
Prior art keywords
strip steel
tension difference
tension
limit value
difference
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CN202310186961.5A
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Chinese (zh)
Inventor
罗军
丁磊
李名钢
李军
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Wuhan Iron and Steel Co Ltd
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Wuhan Iron and Steel Co Ltd
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Priority to CN202310186961.5A priority Critical patent/CN116274407A/en
Publication of CN116274407A publication Critical patent/CN116274407A/en
Pending legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
    • B21B37/48—Tension control; Compression control
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
    • B21B1/22—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length
    • B21B1/24—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length in a continuous or semi-continuous process
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
    • B21B37/68—Camber or steering control for strip, sheets or plates, e.g. preventing meandering
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B38/00—Methods or devices for measuring, detecting or monitoring specially adapted for metal-rolling mills, e.g. position detection, inspection of the product
    • B21B38/06—Methods or devices for measuring, detecting or monitoring specially adapted for metal-rolling mills, e.g. position detection, inspection of the product for measuring tension or compression
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Control Of Metal Rolling (AREA)

Abstract

The application relates to the technical field of strip steel production control, and discloses a method, a device, a medium and a continuous rolling unit for preventing strip steel deviation. The method comprises the following steps: the method comprises the steps of obtaining a tension value of a strip steel transmission side and a tension value of a strip steel operation side at an outlet of a final rolling mill in real time, calculating a difference value of the tension value of the strip steel transmission side minus the tension value of the strip steel operation side, and storing the difference value as a strip steel tension difference to obtain an upper tension difference limit value and a lower tension difference limit value of the strip steel, wherein the strip steel tension difference is larger than the lower tension difference limit value and smaller than the upper tension difference limit value; if the tension difference of the strip steel is larger than the tension difference upper limit value, reducing the roll gap of the strip steel transmission side of the last rolling mill until the tension difference of the strip steel is smaller than the tension difference upper limit value; if the tension difference of the strip steel is smaller than the lower limit value of the tension difference, the roll gap of the strip steel operation side of the last rolling mill is reduced until the tension difference of the strip steel is larger than the lower limit value of the tension difference. The method and the device can prevent the strip steel from deviating in the continuous annealing unit and improve the safety of strip steel production.

Description

Method, device, medium and continuous rolling unit for preventing strip steel from deviating
Technical Field
The application relates to the technical field of strip steel production control, in particular to a method, a device, a medium and a continuous rolling unit for preventing strip steel deviation.
Background
The cold-rolled sheet strip steel has the characteristics of flat surface, high dimensional accuracy and the like, and is widely applied to industries such as automobiles, household appliances, buildings and the like. In the production process of cold-rolled sheet strip steel, strip steel deviation is a common production problem of a continuous annealing unit, the slight deviation can cause the unit to slow down, the production efficiency is affected, and serious deviation can cause malignant accidents such as strip steel scraping, strip breakage and the like, so that the unit is forced to stop.
Disclosure of Invention
The utility model provides a method, device, medium and continuous rolling unit of preventing belted steel off tracking, this application can take certain deviation rectification control when belted steel is in continuous rolling unit production operation, plays the off tracking of preventing belted steel when continuous annealing unit production to improve the security of belted steel when continuous annealing unit production.
Other features and advantages of the present application will be apparent from the following detailed description, or may be learned in part by the practice of the application.
According to an aspect of the embodiments of the present application, there is provided a method for preventing deviation of a strip steel, the method including: the method comprises the steps of obtaining a tension value of a strip steel transmission side and a tension value of a strip steel operation side at an outlet of a final rolling mill in real time, calculating a difference value of the tension value of the strip steel transmission side minus the tension value of the strip steel operation side, and storing the difference value as a strip steel tension difference to obtain an upper tension difference limit value and a lower tension difference limit value of the strip steel, wherein the strip steel tension difference is larger than the lower tension difference limit value and smaller than the upper tension difference limit value; if the tension difference of the strip steel is larger than the tension difference upper limit value, reducing the roll gap of the strip steel transmission side of the last rolling mill until the tension difference of the strip steel is smaller than the tension difference upper limit value; if the tension difference of the strip steel is smaller than the lower limit value of the tension difference, the roll gap of the strip steel operation side of the last rolling mill is reduced until the tension difference of the strip steel is larger than the lower limit value of the tension difference.
In one embodiment of the present application, based on the foregoing solution, the reducing the roll gap on the driving side of the strip of the last rolling mill includes: outputting a first roll gap compensation command for reducing the roll gap of the strip steel transmission side of the last rolling mill according to the fact that the strip steel tension difference is larger than the tension difference upper limit value; and according to the first roll gap compensation command, the roll tilting control system controls the working roll of the last rolling mill to tilt towards the strip steel transmission side until the strip steel tension difference is smaller than the tension difference upper limit value.
In one embodiment of the present application, based on the foregoing solution, the reducing the roll gap on the strip operation side of the last rolling mill includes: outputting a second roll gap compensation command for reducing the roll gap of the strip steel operation side of the last rolling mill according to the fact that the strip steel tension difference is smaller than the tension difference lower limit value; and according to the second roll gap compensation command, the roll tilting control system controls the working roll of the last rolling mill to tilt towards the strip steel operation side until the strip steel tension difference is larger than the lower limit value of the tension difference.
In an embodiment of the present application, based on the foregoing solution, before the tilting control system controls the tilting of the working roller, the tilting control system further includes: and setting a gain coefficient of the inclined roller control system, wherein the gain coefficient represents the response processing speed of the inclined roller control system in unit time.
In an embodiment of the present application, based on the foregoing solution, before the tilting control system controls the tilting of the working roller, the tilting control system further includes: and setting a roll tilting limit value of the working roll, wherein the roll tilting limit value represents the maximum amplitude of the tilting of the working roll.
In an embodiment of the present application, based on the foregoing solution, before obtaining the upper tension difference value and the lower tension difference value of the strip steel, the method further includes: and setting an upper limit value and a lower limit value of the tension difference of the strip steel.
In one embodiment of the present application, based on the foregoing scheme, the set upper limit value and the lower limit value of the tension difference of the strip steel are 2.5kN when the width of the strip steel is more than 1400mm, and the lower limit value of the tension difference is 1.5kN; when the width of the strip steel is less than or equal to 1400mm, the upper limit value of the tension difference is 2kN, and the lower limit value of the tension difference is 1kN.
According to an aspect of the embodiments of the present application, there is provided an apparatus for preventing deviation of a strip steel, the apparatus including: the device comprises an acquisition unit, a tension control unit and a tension control unit, wherein the acquisition unit is used for acquiring a tension value of a strip steel transmission side and a tension value of a strip steel operation side at an outlet of a last rolling mill in real time, calculating a difference value of the tension value of the strip steel transmission side minus the tension value of the strip steel operation side, and storing the difference value as a strip steel tension difference to acquire a tension difference upper limit value and a tension difference lower limit value of the strip steel, wherein the strip steel tension difference is larger than the tension difference lower limit value and smaller than the tension difference upper limit value; the first control unit is used for reducing the roll gap of the strip steel transmission side of the last rolling mill until the strip steel tension difference is smaller than the tension difference upper limit value when the strip steel tension difference is larger than the tension difference upper limit value; and the second control unit is used for reducing the roll gap of the strip steel operation side of the last rolling mill until the strip steel tension difference is larger than the tension difference lower limit value when the strip steel tension difference is smaller than the tension difference lower limit value.
According to one aspect of the embodiments of the present application, there is provided a computer-readable storage medium having stored therein at least one program code loaded and executed by a processor to implement the operations performed by the methods described in the above embodiments.
According to one aspect of the embodiments of the present application, there is provided a continuous rolling mill train comprising one or more processors and one or more memories, the one or more memories collectively storing at least one program code that is loaded and executed by the one or more processors to implement the operations performed by the methods described in the embodiments above.
In the technical scheme of the embodiment of the application, the tension value of the strip steel driving side and the tension value of the strip steel operating side at the outlet of the last rolling mill are obtained, the difference value of the tension value of the strip steel driving side minus the tension value of the strip steel operating side is calculated and kept as the strip steel tension difference, the tension difference upper limit value and the tension difference lower limit value of the strip steel are obtained, if the strip steel tension value is larger than the tension difference lower limit value and smaller than the tension difference upper line value, the tension balance of the strip steel driving side and the strip steel operating side is represented, and the probability of deviation is small. If the tension difference of the strip steel is larger than the upper limit value of the tension difference, reducing the roll gap of the strip steel transmission side of the last rolling mill, and changing the rolling force of the strip steel transmission side, thereby changing the tension value of the strip steel transmission side until the tension difference of the strip steel is smaller than the upper limit value of the tension difference. If the tension difference of the strip steel is smaller than the lower limit value of the tension difference, reducing the roll gap of the strip steel operation side of the last rolling mill, and changing the rolling force of the strip steel operation side, thereby changing the tension value of the strip steel operation side until the tension difference of the strip steel is larger than the lower limit value of the tension difference. The tension balance of the strip steel transmission side and the strip steel operation side is maintained, so that the stress balance of the strip steel transmission side and the strip steel operation side is realized, the strip steel can travel according to a preset route, the strip steel quality after being rolled by a continuous rolling unit is improved, the strip steel is not easy to deviate during production of the continuous annealing unit, and the effect of preventing the strip steel from deviating in the continuous annealing unit is realized.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a flow chart illustrating a method of preventing strip steel deviation according to an embodiment of the present application;
FIG. 2 is a detailed flow chart illustrating a reduction of the roll gap on the drive side of a last mill strip according to an embodiment of the present application;
FIG. 3 is a detailed flow chart illustrating a reduction of the roll gap on the operating side of a last mill strip according to an embodiment of the present application;
FIG. 4 is a block diagram of an apparatus for preventing strip deviation according to an embodiment of the present application;
FIG. 5 is a schematic diagram of a computer-readable storage medium shown according to an embodiment of the present application;
fig. 6 is a schematic view of a continuous rolling mill train according to an embodiment of the present application.
Detailed Description
Example embodiments will now be described more fully with reference to the accompanying drawings. However, the exemplary embodiments may be embodied in many forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the example embodiments to those skilled in the art.
Furthermore, the described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. In the following description, numerous specific details are provided to give a thorough understanding of embodiments of the present application. One skilled in the relevant art will recognize, however, that the aspects of the application can be practiced without one or more of the specific details, or with other methods, components, devices, steps, etc. In other instances, well-known methods, devices, implementations, or operations are not shown or described in detail to avoid obscuring aspects of the application.
The block diagrams depicted in the figures are merely functional entities and do not necessarily correspond to physically separate entities. That is, the functional entities may be implemented in software, or in one or more hardware modules or integrated circuits, or in different networks and/or processor devices and/or microcontroller devices.
The flow diagrams depicted in the figures are exemplary only, and do not necessarily include all of the elements and operations/steps, nor must they be performed in the order described. For example, some operations/steps may be decomposed, and some operations/steps may be combined or partially combined, so that the order of actual execution may be changed according to actual situations.
It should be noted that: references herein to "a plurality" means two or more. "and/or" describes an association relationship of an association object, meaning that there may be three relationships, e.g., a and/or B may represent: a exists alone, A and B exist together, and B exists alone. The character "/" generally indicates that the context-dependent object is an "or" relationship.
It should be noted that the terms "first," "second," and the like in the description and claims of the present application and in the above-described figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the objects so used may be interchanged where appropriate such that the embodiments of the present application described herein may be implemented in sequences other than those illustrated or described.
The implementation details of the technical solutions of the embodiments of the present application are described in detail below:
firstly, it should be noted that the method for preventing strip steel deviation provided by the present application may be applied to the technical field of strip steel production control, for example, when the strip steel is produced in a continuous annealing unit, the strip steel moves in a preset advancing direction, if the strip steel is greatly deviated, the production quality of the strip steel and the production safety of production equipment will be seriously affected, so it is particularly important to prevent strip steel deviation when the strip steel is produced in the continuous annealing unit.
According to an aspect of the present application, there is provided a method for preventing strip steel from running off, fig. 1 is a flowchart of a method for preventing strip steel from running off, which is shown in an embodiment of the present application, and the method for preventing strip steel from running off may be performed by an apparatus having a calculation processing function, and the method for adjusting an angle of a rearview mirror of a vehicle at least includes steps 110 to 130, which are described in detail as follows:
referring to fig. 1, step 110 is performed to obtain a tension value of a driving side of a strip steel and a tension value of an operating side of the strip steel at an outlet of a last rolling mill in real time, calculate a difference value of the tension value of the driving side of the strip steel minus the tension value of the operating side of the strip steel, and store the difference value as a tension difference of the strip steel, thereby obtaining an upper tension difference limit value and a lower tension difference limit value of the strip steel, wherein the tension difference of the strip steel is greater than the lower tension difference limit value and less than the upper tension difference limit value.
And 120, if the tension difference of the strip steel is larger than the tension difference upper limit value, reducing the roll gap of the transmission side of the strip steel of the last rolling mill until the tension difference of the strip steel is smaller than the tension difference upper limit value.
And 130, if the tension difference of the strip steel is smaller than the lower limit value of the tension difference, reducing the roll gap of the strip steel on the operation side of the last rolling mill until the tension difference of the strip steel is larger than the lower limit value of the tension difference.
In the method, the tension value of the strip steel transmission side and the tension value of the strip steel operation side at the outlet of the last rolling mill are obtained in real time, if the strip steel has a tendency of deflection at a continuous rolling unit, the tension difference of the strip steel at the outlet of the last rolling mill is obvious, and if the tension difference of the strip steel at the outlet of the last rolling mill is not excessive, the strip steel is stable to operate.
And calculating a difference value of the tension value of the driving side of the strip steel minus the tension value of the operating side of the strip steel, and storing the difference value as a strip steel tension difference. The calculation formula is as follows: Δt=t (DS) -T (OS), where Δt is the strip tension difference, T (DS) is the strip drive side tension value, and T (OS) is the strip operating side tension value.
The tightness degree of the two sides of the strip steel in the width direction is inconsistent, the internal stress of the strip steel causes asymmetric traction tension of the strip steel in the production of a continuous rolling unit, deflection force in the width direction of the strip steel is caused, when the deflection force exceeds the friction force between the strip steel and a contact roller system, the strip steel is caused to deviate to one side which is relatively loose, and the phenomenon is particularly obvious when the strip steel is in an asymmetric plate shape. The strip steel tension difference is a key index for evaluating the strip steel plate shape symmetry, the strip steel tension difference is maintained in a preset range, the deflection force in the strip steel width direction (namely the strip steel transmission side and the strip steel operation side) is maintained in the preset range, the deflection force of the strip steel is smaller than the friction force between the strip steel and the contact roller system, the strip steel has extremely small probability of deflection, the strip steel deflection can be well prevented, the strip steel quality after a continuous rolling unit is improved, a good travelling route can be maintained when the strip steel is conveyed to the continuous annealing unit, and the effect of preventing the strip steel from deflection in the continuous annealing unit is achieved.
If the tension difference of the strip steel is larger than the upper limit value of the tension difference, reducing the roll gap of the strip steel transmission side of the last rolling mill, and changing the rolling force of the strip steel transmission side, thereby changing the tension value of the strip steel transmission side until the tension difference of the strip steel is smaller than the upper limit value of the tension difference. If the tension difference of the strip steel is smaller than the lower limit value of the tension difference, reducing the roll gap of the strip steel operation side of the last rolling mill, and changing the rolling force of the strip steel operation side, thereby changing the tension value of the strip steel operation side until the tension difference of the strip steel is larger than the lower limit value of the tension difference. The tension balance of the strip steel transmission side and the strip steel operation side is maintained, so that the stress of the strip steel transmission side and the strip steel operation side is balanced, and the strip steel can travel according to a preset route to prevent the strip steel from deviating.
In one embodiment of the present application, reducing the roll gap on the drive side of the final mill strip may be performed in accordance with the steps shown in FIG. 2.
Referring to fig. 2, fig. 2 is a detailed flowchart of a roll gap on the driving side of a strip in a last rolling mill according to an embodiment of the present application, specifically including steps 121 to 122:
and step 121, outputting a first roll gap compensation command for reducing the roll gap of the strip steel transmission side of the last rolling mill according to the fact that the strip steel tension difference is larger than the tension difference upper limit value.
And step 122, according to the first roll gap compensation command, the roll tilting control system controls the working roll of the last rolling mill to tilt towards the strip steel transmission side until the strip steel tension difference is smaller than the tension difference upper limit value.
In the method, a first roll gap compensation command for reducing the roll gap of the strip steel transmission side of the last rolling mill is output according to the fact that the strip steel tension difference is larger than the tension difference upper limit value, a working roll of the last rolling mill is controlled to incline towards the strip steel transmission side according to the first roll gap compensation command inclination control system, the roll gap of the strip steel transmission side of the last rolling mill is reduced, the tension value of the strip steel transmission side is changed, the tension value of the strip steel transmission side is reduced, and the strip steel tension difference is reduced until the strip steel tension difference is smaller than the tension difference upper limit value.
In one embodiment of the present application, reducing the roll gap on the operating side of the final mill strip may be performed in accordance with the steps shown in FIG. 3.
Referring to fig. 3, fig. 3 is a detailed flowchart illustrating a roll gap on an operation side of a strip of a last rolling mill according to an embodiment of the present application, specifically including steps 131 to 132:
and 131, outputting a second roll gap compensation command for reducing the roll gap of the strip steel operation side of the last rolling mill according to the fact that the strip steel tension difference is smaller than the tension difference lower limit value.
And 132, controlling the working rolls of the last rolling mill to incline towards the strip steel operation side by the inclined roll control system according to the second roll gap compensation instruction until the strip steel tension difference is larger than the tension difference lower limit value.
In the application, a second roll gap compensation command for reducing the roll gap of the strip steel operation side of the final rolling mill is output according to the fact that the strip steel tension difference is smaller than the lower limit value of the tension difference, a roll tilting control system is controlled to tilt the working roll of the final rolling mill to the strip steel operation side according to the second roll gap compensation command, the roll gap of the strip steel operation side of the final rolling mill is reduced, the tension value of the strip steel operation side is changed, the tension value of the strip steel operation side is reduced, and the strip steel tension difference is increased until the tension difference is larger than the lower limit value of the tension difference
In one embodiment of the present application, before the tilt roller control system controls the tilt of the working roller, the method further includes step 111 of setting a gain coefficient of the tilt roller control system, where the gain coefficient characterizes a sensitivity of the tilt roller control system.
In the application, the gain coefficient can be set between 0.003 and 0.008 so as to improve the sensitivity of the inclined roller control system and enhance the response speed and the processing capacity to the poor tension of the strip steel.
In one embodiment of the present application, before the roll tilting control system controls the tilting of the work roll, the method further includes step 112 of setting a roll tilting limit value of the work roll, where the roll tilting limit value is indicative of a maximum magnitude of the tilting of the work roll.
In the application, the limit value of the inclined roller of the working roller limits the maximum inclined amplitude of the working roller, so that the smooth passing of the strip steel can be effectively ensured, and the tension value of the strip steel transmission side or the strip steel operation side can be changed, so that the balance of the tension values of the strip steel transmission side and the strip steel operation side is ensured, the balance of the stress of the strip steel is maintained, and the strip steel can be smoothly transmitted from a preset travelling route.
In one embodiment of the present application, before the step of obtaining the upper tension difference value and the lower tension difference value of the strip steel, step 113 is further included, where the upper tension difference value and the lower tension value of the strip steel are set.
In the application, the upper limit value and the lower limit value of the tension value of the strip steel are set according to the width of the strip steel so as to control the reasonable range of the strip steel deflection force.
In one embodiment of the present application, the set upper limit value and the lower limit value of the tension difference of the strip steel are 2.5kN when the width of the strip steel is more than 1400mm, and the lower limit value of the tension difference is 1.5kN; when the width of the strip steel is less than or equal to 1400mm, the upper limit value of the tension difference is 2kN, and the lower limit value of the tension difference is 1kN.
In the application, when the width of the strip steel is larger than 1400mm, the upper limit value of the tension difference can be set to be 2.5kN, and the lower limit value of the tension difference can be set to be 1.5kN; when the width of the strip steel is less than or equal to 1400mm, the upper limit value of the tension difference can be set to 2kN, and the lower limit value of the tension difference can be set to 1kN. When the tension difference of the strip steel is within the set tension difference upper limit value and tension difference lower limit value, the offset force in the width direction of the strip steel is smaller than the friction force between the strip steel and the contact roller system, and the strip steel can keep the preset track running in the running direction of the strip steel, so that the strip steel is effectively prevented from deviating.
Finally, in the production process of the continuous rolling unit, the tension values of the strip steel transmission side and the strip steel operation side are obtained in real time, the strip steel tension difference is calculated and obtained, the strip steel tension difference is smaller than the tension difference upper limit value and larger than the tension difference lower limit value, the offset force generated by the strip steel in the range is smaller than the friction force between the strip steel and the contact roller system, the strip steel cannot be offset, the strip steel can travel in the continuous rolling unit according to a preset route, the strip steel quality after the continuous rolling unit is improved, and therefore the strip steel deflection during the production of the continuous annealing unit is prevented.
The following describes embodiments of the apparatus of the present application, which may be used to perform the method for preventing strip deviation in the above embodiments of the present application. For details not disclosed in the embodiments of the apparatus of the present application, please refer to the embodiments of the method for preventing strip steel deviation described in the present application.
Fig. 4 shows a block diagram of an apparatus for preventing strip deviation in accordance with one embodiment of the present application.
Referring to fig. 4, an apparatus 400 for preventing deviation of a strip steel according to an embodiment of the present application, the apparatus 400 includes: an acquisition unit 401, a first control unit 402, and a second control unit 403.
The obtaining unit 401 is used for obtaining a tension value of a strip steel transmission side and a tension value of a strip steel operation side at an outlet of a last rolling mill in real time, calculating a difference value of the tension value of the strip steel transmission side minus the tension value of the strip steel operation side, and storing the difference value as a strip steel tension difference to obtain a tension difference upper limit value and a tension difference lower limit value of the strip steel, wherein the strip steel tension difference is larger than the tension difference lower limit value and smaller than the tension difference upper limit value; a first control unit 402, configured to reduce the roll gap on the strip driving side of the last rolling mill until the strip tension difference is less than the tension difference upper limit value when the strip tension difference is greater than the tension difference upper limit value; and a second control unit 403, configured to reduce the roll gap of the strip operating side of the last rolling mill until the strip tension difference is greater than the tension difference lower limit value when the strip tension difference is less than the tension difference lower limit value.
As another aspect, the present application also provides a computer readable storage medium having stored thereon a program product capable of implementing the above method for preventing strip deviation of the present specification. In some possible implementations, the various aspects of the present application may also be implemented in the form of a program product comprising program code for causing a terminal device to carry out the steps according to the various exemplary embodiments of the present application as described in the "exemplary methods" section of this specification, when the program product is run on the terminal device.
Referring to fig. 5, a program product 500 for implementing the above-described method according to an embodiment of the present application is described, which may employ a portable compact disc read only memory (CD-ROM) and include program code, and may be run on a terminal device, such as a personal computer. However, the program product of the present application is not limited thereto, and in the present application, the readable storage medium may be any tangible medium that can contain, or store a program for use by or in connection with an instruction execution system, apparatus, or device.
The program product may employ any combination of one or more readable media. The readable medium may be a readable signal medium or a readable storage medium. The readable storage medium can be, for example, but is not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or a combination of any of the foregoing. More specific examples (a non-exhaustive list) of the readable storage medium would include the following: an electrical connection having one or more wires, a portable disk, a hard disk, random Access Memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), optical fiber, portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.
The computer readable signal medium may include a data signal propagated in baseband or as part of a carrier wave with readable program code embodied therein. Such a propagated data signal may take any of a variety of forms, including, but not limited to, electro-magnetic, optical, or any suitable combination of the foregoing. A readable signal medium may also be any readable medium that is not a readable storage medium and that can communicate, propagate, or transport a program for use by or in connection with an instruction execution system, apparatus, or device.
Program code embodied on a readable medium may be transmitted using any appropriate medium, including but not limited to wireless, wireline, optical fiber cable, RF, etc., or any suitable combination of the foregoing.
Program code for carrying out operations of the present application may be written in any combination of one or more programming languages, including an object oriented programming language such as Java, C++ or the like and conventional procedural programming languages, such as the "C" programming language or similar programming languages. The program code may execute entirely on the user's computing device, partly on the user's device, as a stand-alone software package, partly on the user's computing device, partly on a remote computing device, or entirely on the remote computing device or server. In the case of remote computing devices, the remote computing device may be connected to the user computing device through any kind of network, including a Local Area Network (LAN) or a Wide Area Network (WAN), or may be connected to an external computing device (e.g., connected via the Internet using an Internet service provider).
As a further aspect, the present application also provides a continuous rolling mill train capable of implementing the above method.
Those skilled in the art will appreciate that the various aspects of the present application may be implemented as a system, method, or program product. Accordingly, aspects of the present application may be embodied in the following forms, namely: an entirely hardware embodiment, an entirely software embodiment (including firmware, micro-code, etc.) or an embodiment combining hardware and software aspects may be referred to herein as a "circuit," module "or" system.
A continuous rolling mill train 600 according to this embodiment of the present application is described below with reference to fig. 6. The continuous rolling mill train 600 shown in fig. 6 is only an example and should not be construed as limiting the functionality and scope of use of the embodiments of the present application.
As shown in fig. 6, the continuous rolling mill train 600 is in the form of a general purpose computing device. The components of continuous rolling mill train 600 may include, but are not limited to: the at least one processing unit 610, the at least one memory unit 620, and a bus 630 that connects the various system components, including the memory unit 620 and the processing unit 610.
Wherein the storage unit stores program code that is executable by the processing unit 610 such that the processing unit 610 performs steps according to various exemplary embodiments of the present application described in the above-described "example methods" section of the present specification.
The storage unit 620 may include readable media in the form of volatile storage units, such as Random Access Memory (RAM) 621 and/or cache memory 622, and may further include Read Only Memory (ROM) 623.
The storage unit 620 may also include a program/utility 624 having a set (at least one) of program modules 625, such program modules 625 including, but not limited to: an operating system, one or more application programs, other program modules, and program data, each or some combination of which may include an implementation of a network environment.
Bus 630 may be a local bus representing one or more of several types of bus structures including a memory unit bus or memory unit controller, a peripheral bus, an accelerated graphics port, a processing unit, or using any of a variety of bus architectures.
The continuous rolling mill train 600 may also communicate with one or more external devices 1400 (e.g., keyboard, pointing device, bluetooth device, etc.), one or more devices that enable a user to interact with the continuous rolling mill train 600, and/or any device (e.g., router, modem, etc.) that enables the continuous rolling mill train 600 to communicate with one or more other computing devices. Such communication may occur through an input/output (I/O) interface 650. Also, continuous rolling mill train 600 may also communicate with one or more networks, such as a Local Area Network (LAN), a Wide Area Network (WAN), and/or a public network, such as the internet, through network adapter 660. As shown, the network adapter 660 communicates with other modules of the continuous rolling mill train 600 via the bus 630. It should be appreciated that although not shown, other hardware and/or software modules may be used in connection with continuous rolling mill train 600, including but not limited to: microcode, device drivers, redundant processing units, external disk drive arrays, RAID systems, tape drives, data backup storage systems, and the like.
From the above description of embodiments, those skilled in the art will readily appreciate that the example embodiments described herein may be implemented in software, or may be implemented in software in combination with the necessary hardware. Thus, the technical solution according to the embodiments of the present application may be embodied in the form of a software product, which may be stored in a non-volatile storage medium (may be a CD-ROM, a usb disk, a mobile hard disk, etc.) or on a network, and includes several instructions to cause a computing device (may be a personal computer, a server, a terminal device, or a network device, etc.) to perform the method according to the embodiments of the present application.
Furthermore, the above-described figures are only illustrative of the processes involved in the method according to exemplary embodiments of the present application, and are not intended to be limiting. It will be readily appreciated that the processes shown in the above figures do not indicate or limit the temporal order of these processes. In addition, it is also readily understood that these processes may be performed synchronously or asynchronously, for example, among a plurality of modules.
It is to be understood that the present application is not limited to the precise construction set forth above and shown in the drawings, and that various modifications and changes may be effected therein without departing from the scope thereof. The scope of the application is limited only by the appended claims.

Claims (10)

1. A method of preventing deflection of a strip steel, the method comprising:
the method comprises the steps of obtaining a tension value of a strip steel transmission side and a tension value of a strip steel operation side at an outlet of a final rolling mill in real time, calculating a difference value of the tension value of the strip steel transmission side minus the tension value of the strip steel operation side, and storing the difference value as a strip steel tension difference to obtain an upper tension difference limit value and a lower tension difference limit value of the strip steel, wherein the strip steel tension difference is larger than the lower tension difference limit value and smaller than the upper tension difference limit value;
if the tension difference of the strip steel is larger than the tension difference upper limit value, reducing the roll gap of the strip steel transmission side of the last rolling mill until the tension difference of the strip steel is smaller than the tension difference upper limit value;
if the tension difference of the strip steel is smaller than the lower limit value of the tension difference, the roll gap of the strip steel operation side of the last rolling mill is reduced until the tension difference of the strip steel is larger than the lower limit value of the tension difference.
2. The method of claim 1, wherein reducing the roll gap on the drive side of the last mill strip comprises:
outputting a first roll gap compensation command for reducing the roll gap of the strip steel transmission side of the last rolling mill according to the fact that the strip steel tension difference is larger than the tension difference upper limit value;
and according to the first roll gap compensation command, the roll tilting control system controls the working roll of the last rolling mill to tilt towards the strip steel transmission side until the strip steel tension difference is smaller than the tension difference upper limit value.
3. The method of claim 1, wherein reducing the roll gap on the operating side of the last mill strip comprises:
outputting a second roll gap compensation command for reducing the roll gap of the strip steel operation side of the last rolling mill according to the fact that the strip steel tension difference is smaller than the tension difference lower limit value;
and according to the second roll gap compensation command, the roll tilting control system controls the working roll of the last rolling mill to tilt towards the strip steel operation side until the strip steel tension difference is larger than the lower limit value of the tension difference.
4. A method according to claim 2 or 3, wherein before the tilt roller control system controls the tilt of the work roller, further comprising:
and setting a gain coefficient of the inclined roller control system, wherein the gain coefficient represents the response processing speed of the inclined roller control system in unit time.
5. A method according to claim 2 or 3, wherein before the tilt roller control system controls the tilt of the work roller, further comprising:
and setting a roll tilting limit value of the working roll, wherein the roll tilting limit value represents the maximum amplitude of the tilting of the working roll.
6. The method according to claim 1, wherein before the step of obtaining the upper tension difference limit value and the lower tension difference limit value of the strip steel, further comprises:
and setting an upper limit value and a lower limit value of the tension difference of the strip steel.
7. The method according to claim 1, wherein the set upper tension difference limit and lower tension limit of the strip steel are 2.5kN and the lower tension difference limit is 1.5kN when the strip steel width is > 1400 mm; when the width of the strip steel is less than or equal to 1400mm, the upper limit value of the tension difference is 2kN, and the lower limit value of the tension difference is 1kN.
8. An apparatus for preventing deflection of a strip steel, the apparatus comprising:
the device comprises an acquisition unit, a tension control unit and a tension control unit, wherein the acquisition unit is used for acquiring a tension value of a strip steel transmission side and a tension value of a strip steel operation side at an outlet of a last rolling mill in real time, calculating a difference value of the tension value of the strip steel transmission side minus the tension value of the strip steel operation side, and storing the difference value as a strip steel tension difference to acquire a tension difference upper limit value and a tension difference lower limit value of the strip steel, wherein the strip steel tension difference is larger than the tension difference lower limit value and smaller than the tension difference upper limit value;
the first control unit is used for reducing the roll gap of the strip steel transmission side of the last rolling mill until the strip steel tension difference is smaller than the tension difference upper limit value when the strip steel tension difference is larger than the tension difference upper limit value;
and the second control unit is used for reducing the roll gap of the strip steel operation side of the last rolling mill until the strip steel tension difference is larger than the tension difference lower limit value when the strip steel tension difference is smaller than the tension difference lower limit value.
9. A computer readable storage medium having stored therein at least one program code loaded and executed by a processor to implement operations performed by the method of any of claims 1 to 7.
10. A continuous rolling mill train comprising one or more processors and one or more memories, the one or more memories collectively storing at least one piece of program code that is loaded and executed by the one or more processors to perform the operations performed by the method of any of claims 1-7.
CN202310186961.5A 2023-02-27 2023-02-27 Method, device, medium and continuous rolling unit for preventing strip steel from deviating Pending CN116274407A (en)

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CN202310186961.5A CN116274407A (en) 2023-02-27 2023-02-27 Method, device, medium and continuous rolling unit for preventing strip steel from deviating

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202310186961.5A CN116274407A (en) 2023-02-27 2023-02-27 Method, device, medium and continuous rolling unit for preventing strip steel from deviating

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CN116274407A true CN116274407A (en) 2023-06-23

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