A rolling mill system control method, device, medium and equipment

Abstract

The application provides a rolling mill system control method, device, medium and equipment, wherein the method comprises the following steps: controlling the strip steel to pass through the first mill to the last mill and performing rolling on the strip steel; after starting the rolling on the strip steel, detecting the rolling force of the work roll on both sides of the strip steel for any one of the third mill to the last mill, and calculating the difference between the rolling forces; if the fluctuation value of the difference exceeds the first preset fluctuation value and the number of times of exceeding the first preset fluctuation value is greater than or equal to the first preset number of times within any first preset period, the rolling mill system is controlled to stop performing the rolling on the strip steel. The application solves the problem that the surface peeling or internal defects of the roll cannot be found in time, the scheme provided by the application can find whether the roll has the surface peeling or internal defects and other problems in time, can effectively avoid the serious accidents such as roll breakage, and ensures the high-quality and stable production of the strip steel.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of steel rolling, in particular to a rolling mill system control method, device, medium and equipment. BACKGROUND

[0002] With the increasingly fierce competition in the steel market, thin specifications are increasing. When the tail of the thin specification is thrown or the internal defects of the roll cause the roll to produce block peeling, if it cannot be found in time, it will cause the work roll to break and other serious accidents, and in severe cases, it will indirectly cause the support roll to break. The broken roll is difficult to handle, which will cause long-term shutdown and serious damage to the rolling mill equipment. How to avoid the broken roll caused by roll peeling is particularly important. For a long time, how to improve the avoidance of roll breakage has been a key and difficult point, which directly affects the production operation and work efficiency.

[0003] Based on this, in continuous production, how to timely find out whether the roll has surface peeling or internal defects and other problems, avoid roll breakage accidents, and ensure high-quality and stable production of the strip steel is a technical problem to be solved. SUMMARY

[0004] The purpose of the present application is to provide a rolling mill system control method, device, medium and equipment, which solves the problem that the surface peeling or internal defects of the roll cannot be found in time, and the scheme proposed in the present application can timely find out whether the roll has surface peeling or internal defects and other problems, effectively avoid roll breakage and other serious accidents, and ensure high-quality and stable production of the strip steel.

[0005] Specifically, the present application adopts the following technical scheme:

[0006] According to an aspect of an embodiment of the present application, a rolling mill system control method is provided, the rolling mill system includes a plurality of stands arranged in sequence, and the method includes: controlling the strip steel to pass through the first stand to the last stand to start performing rolling on the strip steel; after starting to perform rolling on the strip steel, for any one of the third stand to the last stand, respectively detecting the rolling force of the work roll on both sides of the strip steel of the any one stand, and calculating the difference between the rolling forces of the work roll on both sides of the strip steel; if the fluctuation value of the difference exceeds a first preset fluctuation value and the number of times of exceeding the first preset fluctuation value is greater than or equal to a first preset number of times within any one first preset period, the rolling mill system is controlled to stop performing rolling on the strip steel, and the strip steel that has completed rolling is coiled.

[0007] In some embodiments of the present application, based on the foregoing scheme, the method further comprises: if the fluctuation value of the difference value exceeds a second preset fluctuation value and the number of times of exceeding the second preset fluctuation value is greater than or equal to a second preset number of times within any one second preset period, controlling the rolling mill system to stop performing rolling on the strip steel, and controlling a coiler to coil the strip steel on which rolling has been completed, the second preset period being less than the first preset period, the second preset fluctuation value being greater than the first preset fluctuation value, and the second preset number of times being less than the first preset number of times.

[0008] In some embodiments of the present application, based on the foregoing scheme, the rolling mill system comprises loafs respectively arranged between each adjacent stand, and the loafs are used to adjust the tension of the strip steel between adjacent stands.

[0009] In some embodiments of the present application, based on the foregoing scheme, the controlling the rolling mill system to stop performing rolling on the strip steel comprises: opening the working roll gap of the third stand to the last stand; and relaxing each of the loafs between the third stand and the last stand.

[0010] In some embodiments of the present application, based on the foregoing scheme, after stopping performing rolling on the strip steel, the working angle of the loafs between the third stand and the last stand is 11°.

[0011] In some embodiments of the present application, based on the foregoing scheme, the coiling the strip steel on which rolling has been completed comprises: controlling the strip steel to be sequentially conveyed from the second stand to the last stand according to the strip steel outlet speed and the strip steel outlet thickness of the second stand; and controlling the coiler of the rolling mill system to coil the strip steel.

[0012] In some embodiments of the present application, based on the foregoing scheme, the number of stands of the rolling mill system is 7, and during rolling of the strip steel, the working angle of the loafs between the first stand and the fourth stand is 20°, and the working angle of the loafs between the fourth stand and the seventh stand is 22°.

[0013] According to an aspect of the embodiments of the present application, a rolling mill system control device is provided, which comprises: a first control unit configured to control a strip steel to pass through a first mill stand to a last mill stand to start rolling the strip steel; a detection unit configured to detect rolling forces on both sides of the strip steel of a work roll pair of any one of the third mill stand to the last mill stand after the rolling of the strip steel is started; a calculation unit configured to calculate a difference between the rolling forces on both sides of the strip steel of the work roll pair; and a second control unit configured to control the rolling mill system to stop rolling the strip steel and to wind up the strip steel on which the rolling is completed, if a fluctuation value of the difference exceeds a first preset fluctuation value and a number of times that the first preset fluctuation value is exceeded is greater than or equal to a first preset number within any one of first preset periods.

[0014] According to an aspect of the embodiments of the present application, a computer readable storage medium is provided, which stores at least one program code, and the at least one program code is loaded and executed by a processor to implement the operations performed by the rolling mill system control method.

[0015] According to an aspect of the embodiments of the present application, an electronic device is provided, which comprises a memory and a processor, the memory stores a computer program, and the processor implements the operations performed by the rolling mill system control method when executing the computer program.

[0016] From the above technical solutions, the present application has at least the following advantages and positive effects:

[0017] By using the scheme provided by the present application, the problem that the surface peeling or internal defects of the work roll cannot be found in time can be solved, the scheme provided by the present application can find whether the surface peeling or internal defects of the work roll exist in time, and can effectively avoid the malignant accidents such as work roll breakage, thereby ensuring the high-quality and stable production of the strip steel. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the present application, the drawings needed in the embodiments will be briefly introduced as follows. Obviously, the drawings in the following description are some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0019] Figure 1 A rolling mill system control method flow chart in an embodiment of the present application is shown;

[0020] Figure 2 A rolling mill system structure diagram in an embodiment of the present application is shown;

[0021] Figure 3 A structural block diagram of a rolling mill system control device in one embodiment of the present application is shown;

[0022] Figure 4 A structural schematic diagram of a computer system of an electronic device suitable for implementing embodiments of the present application is shown;

[0023] The following is a description of the reference numerals:

[0024] 201 - first stand, 202 - second stand,

[0025] 203 - seventh stand, 204 - work roll,

[0026] 205 - coiler, 206 - loop,

[0027] 207 - loop hydraulic cylinder, 208 - loop arm,

[0028] 209 - loop roll; 210 - strip. DETAILED DESCRIPTION

[0029] Example implementations will now be described more fully with reference to the accompanying drawings. Example implementations may, however, be implemented in many different forms and should not be construed as limited to the examples set forth herein; rather, these implementations are provided so that this disclosure will be thorough and complete, and will fully convey the scope of example implementations to those skilled in the art.

[0030] Moreover, the described features, structures, or characteristics can 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 application. One skilled in the relevant art will recognize, however, that the

[0031] The flow diagrams shown in the various figures, which consist of blocks representing operations / steps, are merely illustrative. Not all of the content and operations / steps can be required, and some of the operations / steps can be combined or performed in another order. The sequence in which the operations / steps are presented is not necessarily the sequence in which the operations / steps are performed. For example, some operations / steps can be performed in parallel, or the operations / steps can be performed at different times.

[0032] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and in the above-described drawings are used to distinguish similar objects, and do not necessarily have to be used to describe a specific order or sequence. It should be understood that the objects thus used can be interchanged under appropriate circumstances, so that the embodiments of the present application described herein can be implemented in an order other than that illustrated or described.

[0033] The implementation details of the technical solutions of the embodiments of the present application are described in detail as follows:

[0034] Referring to Figure 1 , Figure 1 is a flow chart of a rolling mill system control method in an embodiment of the present application.

[0035] In the present application, a rolling mill system control method is provided, which can solve the problem of block peeling of a roll or roll breakage caused by tail whipping of a strip or internal defects of a roll of a finishing mill during rolling of the strip, thereby avoiding damage to the rolling mill equipment and affecting the quality of the strip.

[0036] According to a typical embodiment of the present application, a rolling mill system control method is provided, which includes the following steps S1 to S3:

[0037] Step S1, control the strip to pass through from the first stand to the last stand to start performing rolling of the strip.

[0038] In the present application, before rolling of the strip, rolling mill threading is required, and the strip can be controlled to pass through from the first stand to the last stand of a finishing rolling production line. After threading is completed, rolling of the strip can be started to roll the strip to a target thickness.

[0039] Step S2, after starting to perform rolling of the strip, for any one of the third stand to the last stand, the rolling force of the work roll pair on both sides of the strip is detected respectively, and the difference between the rolling forces of the work roll pair on both sides of the strip is calculated.

[0040] In the application, when the block peeling occurs on the rolling mill roll or the internal defects exist in the roll, the rolling force on both sides of the strip is not equal when the roll is rolling the strip, and the quality of the rolled strip is defective, thereby affecting the secondary processing of the strip or the sales of the finished product. The scheme provided in the application starts to detect the rolling force of the work roll on both sides of the strip from the third rolling mill to any one of the last stands on the entry side of the rolling mill after the rolling of the strip starts, and calculates the difference between the rolling forces on both sides of the strip. The rolling force can be detected by the pressure head installed below the support roll under the rolling mill.

[0041] In step S3, if the fluctuation value of the difference exceeds the first preset fluctuation value and the number of times of exceeding the first preset fluctuation value is greater than or equal to the first preset number of times within any one first preset period, the rolling mill system is controlled to stop the rolling of the strip, and the rolled strip is coiled.

[0042] In the application, after the rolling force of the work roll on both sides of the strip is detected and the difference between the rolling forces on both sides of the strip is calculated, the difference can be judged within any one first preset period. If the fluctuation value of the difference exceeds the first preset fluctuation value and the number of times of exceeding the first preset fluctuation value is greater than or equal to the first preset number of times, the rolling mill system is controlled to stop the rolling of the strip, and the coiled strip after rolling is coiled.

[0043] In the application, it should be noted that the first preset period can be 0.5 seconds, 0.4 seconds or other time. The first preset fluctuation value can be 2000KN, 2001KN or other parameter. The first preset number of times can be 2 times, 1 time or other number of times. The application does not particularly limit the values of the first preset period, the first preset fluctuation value and the first preset number of times, which can be adjusted according to actual needs.

[0044] In an embodiment of the application, the method further comprises:

[0045] In any one second preset period, if the fluctuation value of the difference exceeds the second preset fluctuation value and the number of times of exceeding the second preset fluctuation value is greater than or equal to the second preset number of times, the rolling mill system is controlled to stop the rolling of the strip, and the coiling machine is controlled to coil the rolled strip. The second preset period is less than the first preset period, the second preset fluctuation value is greater than the first preset fluctuation value, and the second preset number of times is less than the first preset number of times.

[0046] In the present application, after detecting the rolling forces on both sides of the work rolls of the arbitrary one stand and calculating the difference between the rolling forces on both sides of the work rolls of the arbitrary one stand, the difference can be judged within an arbitrary second preset period. If the fluctuation value of the difference exceeds a second preset fluctuation value and the number of times of exceeding the second preset fluctuation value is greater than or equal to a second preset number of times, the rolling mill system is controlled to stop performing rolling on the strip, and the strip arriving at the coiler after rolling is coiled into a coil.

[0047] In the present application, it should be noted that the second preset period can be 0.2 seconds, 0.21 seconds or other time. The second preset fluctuation value can be 4000 KN, 3999 KN or other parameter. The second preset number of times can be 0, 1 or other number of times. The present application does not particularly limit the values of the second preset period, the second preset fluctuation value and the second preset number of times, which can be adjusted according to actual needs. It should be noted that the second preset period is less than the first preset period, the second preset fluctuation value is greater than the first preset fluctuation value, and the second preset number of times is less than the first preset number of times.

[0048] In an embodiment of the present application, the rolling mill system comprises loafs respectively arranged between adjacent stands, and the loafs are used to adjust the tension of the strip between adjacent stands.

[0049] In the present application, since there is a certain distance between the arbitrary one stand and its adjacent stands, the strip may slip during rolling due to too thin strip specification, or a strip stacking accident may occur due to insufficient tension of the strip between the arbitrary one stand and its adjacent stands. The rolling mill system can further comprise loafs respectively arranged between adjacent stands, and the loafs can be used to adjust the tension of the strip between adjacent stands. The tension of the strip between adjacent stands can be adjusted by adjusting the working angle of the loafs, so that the tension of the strip meets the requirements of strip rolling, thereby ensuring the quality of the strip.

[0050] In an embodiment of the present application, the control of the rolling mill system to stop performing rolling on the strip comprises: opening the work roll gap of the third stand to the last stand; and relaxing the loafs between the third stand and the last stand.

[0051] In an embodiment of the present application, after stopping performing rolling on the strip, the working angle of the loafs between the third stand and the last stand is 11°.

[0052] In the present application, if the fluctuation value of the difference value exceeds the first preset fluctuation value in any one first preset period, and the number of times of exceeding the first preset fluctuation value is greater than or equal to the first preset number of times, or if the fluctuation value of the difference value exceeds the second preset fluctuation value in any one second preset period, and the number of times of exceeding the second preset fluctuation value is greater than or equal to the second preset number of times, the rolling mill system needs to be controlled to stop performing rolling on the strip steel, which can be achieved by quickly opening the roll gap of the work rolls of the third stand to the last stand, and relaxing each loop between the third stand and the last stand, so that the work rolls of the stands no longer apply rolling force to the strip steel. At this time, the working angle of each loop between the third stand and the last stand is 11°.

[0053] In the present application, it should be noted that a loop can be installed between each adjacent stand, and the loop includes a loop hydraulic cylinder, a loop roll and a loop arm. The loop roll can be in contact with the strip steel, and the loop arm can be controlled by the loop hydraulic cylinder to drive the loop roll to adjust the working angle of the loop between the third stand and the last stand to 11°. The working angle of the loop between the third stand and the last stand can be adjusted to 11°, 10° or 11.5°, which is not particularly limited in the present application, and can be adjusted according to actual conditions.

[0054] In an embodiment of the present application, the coiled strip steel after rolling includes:

[0055] The strip steel is controlled to be conveyed from the second stand to the last stand in sequence according to the strip steel exit speed and the strip steel exit thickness of the second stand, and the coiler of the rolling mill system is controlled to coil the strip steel.

[0056] In the present application, after the rolling mill system is controlled to stop performing rolling on the strip steel, the strip steel is controlled to be conveyed from the second stand to the last stand in sequence according to the strip steel exit speed and the strip steel exit thickness of the second stand on the rolling entrance side, and the coiler of the rolling mill system is controlled to coil the strip steel after rolling.

[0057] In an embodiment of the present application, the number of stands of the rolling mill system is 7, and the working angle of the loop between the first stand and the fourth stand is 20°, and the working angle of the loop between the fourth stand and the seventh stand is 22° during the rolling process of the strip steel.

[0058] In the present application, the number of stands of the rolling mill system can be 7, and the number of loops can be 6. The number of stands and the number of loops can also be other numbers, which are not particularly limited in the present application. During the rolling process of the strip steel, the working angle of the loop between the first stand and the fourth stand can be 20°, and the working angle of the loop between the fourth stand and the seventh stand can be 22°. The working angle of the loop between the first stand and the fourth stand and the working angle of the loop between the fourth stand and the seventh stand can also be other angles, which are not particularly limited in the present application and can be adjusted according to actual needs.

[0059] The specific embodiments of the present application will be further illustrated below through specific examples, but the specific embodiments of the present application are not limited to the following examples.

[0060] Referring to Figure 2 , Figure 2 is a structural diagram of a rolling mill system in an embodiment of the present application.

[0061] In a specific embodiment of the present application, as shown in the structural diagram of the rolling mill system, Figure 2 the rolling mill system includes seven rolling mills arranged in sequence, Figure 2 Although only the first stand 201, the second stand 202 and the seventh stand 203 are explicitly shown, it can be understood that there are also a third stand, a fourth stand, a fifth stand and a sixth stand between the second stand 202 and the seventh stand 203, Figure 2 The number of loops 206 in the rolling mill system can be 6, which are respectively arranged between adjacent stands.

[0062] During the rolling of the strip steel 210, the strip steel 210 is first controlled to pass through the first stand 201 to the seventh stand 203 to start the rolling of the strip steel 210. After starting the rolling of the strip steel 210, the rolling force of the work roll 204 on both sides of the strip steel 210 is detected for any one of the third stand (on the right side of the second stand 202) to the seventh stand 203 (which can be detected after the work roll 204 of any one of the third stand to the seventh stand 203 bites the steel for 0.5 seconds), and the difference between the rolling forces of the work roll 204 on both sides of the strip steel 210 is calculated. In any first preset period (here, the first preset period can be 0.5 seconds), if the fluctuation value of the difference value exceeds the first preset fluctuation value (here, the first preset fluctuation value can be 2000 KN), and the number of times of exceeding the first preset fluctuation value is greater than or equal to the first preset number of times (here, the first preset number of times can be 2 times), the rolling mill system is controlled to stop rolling the strip steel 210, and the rolled strip steel 210 is coiled.

[0063] Continuing to refer to Figure 2 Further, if the fluctuation value of the difference value exceeds a second preset fluctuation value (here, the second preset fluctuation value can be 4000 KN) and the number of times of exceeding the second preset fluctuation value is greater than or equal to a second preset number of times (here, the first preset number of times can be 0 times) within any one second preset period (here, the second preset period can be 0.2 seconds), the rolling mill system is controlled to stop performing rolling on the strip steel 210, and the coiler is controlled to coil the strip steel 210 on which rolling has been completed.

[0064] Continuing to refer to Figure 2 The specific operation of controlling the rolling mill system to stop performing rolling on the strip steel 210 can include quickly opening the roll gap of the work roll 204 of the third to seventh stands 203 and relaxing each loop 206 between the third and seventh stands 203. When relaxing each loop 206 between the third and seventh stands 203, the loop arm 208 can be controlled by the loop hydraulic cylinder 207 to drive the loop roll 209, so that the working angle of the loop 206 between the third and seventh stands 203 is adjusted to 11° (that is, the angle of the angle a is 11° as shown in the figure). Figure 2

[0065] Continuing to refer to Figure 2 After the rolling mill system is controlled to stop performing rolling on the strip steel 210, the strip steel 210 is controlled to be sequentially conveyed from the second stand 202 to the seventh stand 203 according to the strip steel exit speed and the strip steel exit thickness of the second stand 202, and finally the coiler 205 of the rolling mill system is controlled to coil the strip steel 210, so as to complete the entire rolling process.

[0066] In a specific embodiment of the present application, it is noted that Figure 2 During the rolling process of the strip steel 210, the working angle of the loop 206 between the first stand 201 and the fourth stand can be 20°, and the working angle of the loop 206 between the fourth stand and the seventh stand 203 can be 22°.

[0067] The device embodiment of the present application is described below, which can be used to perform the rolling mill system control method in the above-mentioned embodiments of the present application. For details not disclosed in the device embodiment of the present application, please refer to the above-mentioned working condition monitoring method of the coiler.

[0068] Figure 3 The structure block diagram of the rolling mill system control device according to the embodiment of the present application is shown.

[0069] Referring to Figure 3 ​As shown, the working condition monitoring device 300 of the coiler according to an embodiment of the present application comprises a first control unit 301, a detection unit 302, a calculation unit 303, and a second control unit 304.

[0070] The first control unit 301 is configured to control the strip to be threaded from the first stand to the last stand to start the rolling of the strip.

[0071] The detection unit 302 is configured to detect the rolling force of the work roll pair on both sides of the strip for any one of the third stand to the last stand after the rolling of the strip is started.

[0072] The calculation unit 303 is configured to calculate the difference between the rolling forces of the work roll pair on both sides of the strip.

[0073] The second control unit 304 is configured to, if the fluctuation value of the difference exceeds the first preset fluctuation value and the number of times of exceeding the first preset fluctuation value is greater than or equal to the first preset number of times within any one first preset period, control the rolling mill system to stop the rolling of the strip and to coiling the strip after the rolling is completed.

[0074] Referring to Figure 4 , Figure 4 A structural schematic diagram of a computer system of an electronic device suitable for implementing the embodiments of the present application is shown.

[0075] As Figure 4 shown, the computer system 400 comprises a central processing unit (CPU) 401 which can perform various appropriate actions and processes according to programs stored in a read-only memory (ROM) 402 or programs loaded from a storage portion 408 into a random access memory (RAM) 403, such as the method described in the above embodiments. In the RAM 403, various programs and data required for system operation are also stored. The CPU 1101, the ROM 402, and the RAM 403 are connected to each other through a bus 404. An input / output (I / O) interface 405 is also connected to the bus 404.

[0076] The following components are connected to the I / O interface 405: an input part 406 including a keyboard, a mouse, etc.; an output part 407 including a display such as a Cathode Ray Tube (CRT), a Liquid Crystal Display (LCD), etc., and a speaker, etc.; a storage part 408 including a hard disk, etc.; and a communication part 409 including a network interface card such as a LAN (Local Area Network) card, a modem, etc. The communication part 409 performs communication processing via a network such as the Internet. A drive 410 is also connected to the I / O interface 405 as necessary. A removable medium 411 such as a magnetic disk, an optical disk, a magneto-optical disk, a semiconductor memory, etc. is attached to the drive 410 as necessary, so that a computer program read out therefrom is installed in the storage part 408 as necessary.

[0077] In particular, according to embodiments of the present application, the processes described above with reference to the flowcharts can be implemented as a computer software program. For example, embodiments of the present application include a computer program product comprising a computer program carried on a computer-readable medium, the computer program containing program code for executing the methods illustrated by the flowcharts. In such embodiments, the computer program can be downloaded and installed from a network by the communication part 409, and / or installed from the removable medium 411. When the computer program is executed by the central processing unit (CPU) 401, various functions defined in the system of the present application are executed.

[0078] It should be noted that the computer-readable medium in the embodiments of the present application can be a computer-readable signal medium or a computer-readable storage medium or any combination thereof. The computer-readable storage medium may, for example, but is not limited to, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, device or apparatus, or any combination thereof. More specific examples of the computer-readable storage medium can include, but are not limited to, an electrical connection having one or more wires, a portable computer diskette, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM), a flash memory, an optical fiber, a portable compact disk read-only memory (Compact Disc Read-Only Memory, CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination thereof. In the present application, the computer-readable storage medium can be any tangible medium containing or storing a program that can be used by or in conjunction with an instruction execution system, device or apparatus. In the present application, the computer-readable signal medium can include a data signal carrying a computer-readable program code in a baseband or as a part of a carrier wave. Such a propagated data signal can take various forms, including but not limited to an electromagnetic signal, an optical signal, or any suitable combination thereof. The computer-readable signal medium can also be any computer-readable medium other than the computer-readable storage medium, which can send, transmit, propagate or transport a program for use by or in conjunction with an instruction execution system, device or apparatus. The program code contained on the computer-readable medium can be transmitted using any suitable medium, including but not limited to wireless, wired, or the like, or any suitable combination thereof.

[0079] The flowcharts and block diagrams in the drawings illustrate the possible implementation architectures, functions and operations of the systems, methods and computer program products according to various embodiments of the present application. In the flowcharts or block diagrams, each block can represent a module, a program segment or a part of code containing one or more executable instructions for implementing a specified logical function. It should also be noted that in some alternative implementations, the functions noted in the blocks can occur in different orders than that shown in the drawings. For example, two blocks that are shown in succession can actually be executed substantially in parallel, and sometimes in reverse order, depending on the involved functions. It should also be noted that each block in the block diagrams or flowcharts, and the combination of blocks in the block diagrams or flowcharts, can be implemented by a dedicated hardware-based system that performs the specified functions or operations, or can be implemented by a combination of dedicated hardware and computer instructions.

[0080] The units described in the embodiments of the present application can be implemented in the form of software, or can be implemented in the form of hardware, and the described units can also be arranged in a processor. In some cases, the names of the units do not constitute a limitation on the units themselves.

[0081] According to a typical embodiment of the present application, the present application further provides a computer readable storage medium, the computer readable storage medium stores at least one program code, the at least one program code is loaded and executed by a processor to implement the operations performed by the rolling mill system control method as described above.

[0082] According to a typical embodiment of the present application, the present application further provides an electronic device, the electronic device includes a memory and a processor, the memory stores a computer program, and the processor executes the computer program to implement the operations performed by the rolling mill system control method as described above.

[0083] It should be noted that although several modules or units of the device for action execution are mentioned in the above detailed description, such division is not mandatory. In fact, according to the embodiments of the present application, the features and functions of two or more modules or units described above can be embodied in one module or unit. Conversely, the features and functions of one module or unit described above can be further divided into a plurality of modules or units.

[0084] From the above technical solutions, the present application has at least the following advantages and positive effects:

[0085] Firstly, the scheme proposed by the present application can solve the problem that surface peeling or internal defects of the roll cannot be found in time. The scheme proposed by the present application can find whether the roll has surface peeling or internal defects and other problems in time, can effectively avoid serious accidents such as roll breakage, and ensure stable production of high-quality strip steel.

[0086] Secondly, the scheme proposed by the present application can ensure high-quality production of strip steel, improve the quality and production efficiency of strip steel, and increase market competitiveness and capital income.

[0087] Thirdly, the scheme proposed by the present application can greatly reduce the scrap amount of strip steel and the damage amount of equipment, greatly save resources and equipment maintenance funds.

[0088] While the application has been described with reference to several exemplary embodiments, it will be understood that the terms used are intended to be illustrative and not limiting. It will be appreciated that variations and modifications of the application can be effected without departing from the spirit or scope of the application. It will be appreciated that the above described embodiments are only illustrative of the application and not limiting. It will be understood that the above described embodiments are not intended to limit the scope of the application and that modifications and other embodiments will occur to those skilled in the art upon reading this description. Therefore, it will be understood that the application is not limited to the specific details described herein but is capable of many modifications and changes without departing from the spirit or scope of the application.

Claims

1. A rolling mill system control method characterized by, The rolling mill system comprises a plurality of stands arranged in sequence, and the method comprises: controlling the strip to pass from the first stand to the last stand to start performing rolling of the strip; after starting to perform rolling of the strip, detecting the rolling forces on both sides of the strip of the work rolls of any one of the third stand to the last stand, and calculating the difference between the rolling forces on both sides of the strip of the work rolls; if the fluctuation value of the difference exceeds a first preset fluctuation value and the number of times of exceeding the first preset fluctuation value is greater than or equal to a first preset number within any one first preset period, controlling the rolling mill system to stop performing rolling of the strip and to wind up the strip that has completed rolling; the method further comprises: if the fluctuation value of the difference exceeds a second preset fluctuation value and the number of times of exceeding the second preset fluctuation value is greater than or equal to a second preset number within any one second preset period, controlling the rolling mill system to stop performing rolling of the strip and to wind up the strip that has completed rolling, the second preset period being less than the first preset period, the second preset fluctuation value being greater than the first preset fluctuation value, and the second preset number being less than the first preset number.

2. The method of claim 1, wherein, The rolling mill system comprises loops respectively arranged between each adjacent stand, and the loops are used to adjust the tension of the strip between the adjacent stands.

3. The method of claim 2, wherein, The control of the rolling mill system to stop performing rolling of the strip comprises: opening the roll gap of the work rolls of the third stand to the last stand; loosening each loop between the third stand and the last stand.

4. The method of claim 3, wherein, After stopping performing rolling of the strip, the working angle of the loop between the third stand and the last stand is 11°.

5. The method of claim 2, wherein, The winding up of the strip that has completed rolling comprises: controlling the strip to be sequentially conveyed from the second stand to the last stand according to the strip exit speed and the strip exit thickness of the second stand; controlling the coiler of the rolling mill system to wind up the strip.

6. The method of claim 2, wherein, The number of stands of the rolling mill system is 7, and during rolling of the strip, the working angle of the loop between the first stand and the fourth stand is 20°, and the working angle of the loop between the fourth stand and the seventh stand is 22°.

7. A rolling mill system control device for implementing the rolling mill system control method according to any one of claims 1 to 6, characterized by The device comprises: a first control unit configured to control the strip to pass from the first stand to the last stand to start performing rolling of the strip; a detection unit configured to, after starting to perform rolling of the strip, detect the rolling forces on both sides of the strip of the work rolls of any one of the third stand to the last stand; a calculation unit configured to calculate the difference between the rolling forces on both sides of the strip of the work rolls; a second control unit configured to, if the fluctuation value of the difference exceeds a first preset fluctuation value and the number of times of exceeding the first preset fluctuation value is greater than or equal to a first preset number within any one first preset period, control the rolling mill system to stop performing rolling of the strip and to wind up the strip that has completed rolling.

8. A computer-readable storage medium, characterized in that, The computer readable storage medium stores at least one program code, and the at least one program code is loaded and executed by the processor to implement the operations performed by the method in any one of claims 1 to 6. 9.An electronic device comprising a memory and a processor, the memory storing a computer program, wherein, The processor executes the computer program to implement the operations performed by the method in any one of claims 1 to 6.

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