A method, device, medium and equipment for preventing strip breakage in a temper mill

Abstract

The application provides a method, device, medium and equipment for preventing strip breakage in a skin pass mill, wherein the method comprises the following steps: receiving a thickness measurement value of a strip in the skin pass mill reported by a thickness gauge in real time, wherein a rolling force applied to the strip by the skin pass mill is positively correlated with the thickness measurement value; calculating a thickness difference between the thickness measurement value and a thickness set value when the thickness gauge fails; if the thickness difference exceeds a preset threshold value, receiving the thickness set value as a new thickness measurement value, so as to determine the rolling force applied to the strip by the skin pass mill according to the new thickness measurement value. The application solves the problem of strip breakage in the skin pass mill caused by the failure of the thickness gauge, guarantees the stable production of the strip, and improves the quality of the strip and the efficiency of the strip production.

Description

TECHNICAL FIELD

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

[0002] A thickness gauge is one of the important devices in the production process of cold-rolled strip steel. In a cold-rolled strip steel continuous production line, the accuracy and stability of the thickness measurement of the thickness gauge are crucial, and the daily maintenance of the thickness gauge is also necessary. In the process of cold-rolled strip steel temper rolling, once the thickness gauge fails, it will lead to incorrect rolling of the strip steel, scrap of the steel coil, and even strip breakage in severe cases, which greatly affects the continuity of production and causes significant economic losses to the company.

[0003] In the existing scheme, when the thickness gauge fails, it is easy to cause strip breakage in the temper mill. For example, during the secondary reduction rolling process of the temper mill, the outlet thickness gauge cooling water system reports an error, causing the thickness gauge high-voltage power supply to lose power. The actual value of the thickness of the outlet of the temper mill abnormally changes from 0.17 mm to 0.85 mm, causing the rolling force of the 1st rack of the temper mill to increase to 7.2 MN, and the strip steel in the 1st rack of the temper mill is rolled off, which not only affects the continuity of strip steel production but also causes significant economic losses to the company.

[0004] Therefore, how to prevent strip breakage in the temper mill after the thickness gauge fails, improve the quality of the strip steel, and ensure the efficiency and stability of the strip steel production is a technical problem to be solved. SUMMARY

[0005] The present application provides a method and device for preventing strip breakage in a temper mill, a medium and equipment, which solves the problem of strip breakage in the temper mill caused by the failure of the thickness gauge, ensures the stable production of the strip steel, and improves the quality of the strip steel and the efficiency of the strip steel production.

[0006] Specifically, the present application adopts the following technical scheme:

[0007] According to a first aspect of the present application, a method for preventing strip breakage in a temper mill is provided, which comprises: receiving a thickness measurement value of the strip steel in the temper mill reported by a thickness gauge in real time, the rolling force of the strip steel applied by the temper mill being positively correlated with the thickness measurement value; calculating a thickness difference between the thickness measurement value and a thickness set value when the thickness gauge fails; if the thickness difference exceeds a preset threshold value, receiving the thickness set value as a new thickness measurement value to determine the rolling force of the strip steel applied by the temper mill according to the new thickness measurement value.

[0008] In some embodiments of the present application, based on the foregoing scheme, the method further comprises: if the thickness difference value does not exceed the preset threshold, determining the rolling force applied to the strip steel by the temper mill according to the thickness measurement value reported by the thickness gauge in real time.

[0009] In some embodiments of the present application, based on the foregoing scheme, the method further comprises: obtaining a tolerance ratio of the thickness difference value; and calculating the preset threshold according to the thickness set value and the tolerance ratio.

[0010] In some embodiments of the present application, based on the foregoing scheme, the tolerance ratio is set to 4% to 6%.

[0011] In some embodiments of the present application, based on the foregoing scheme, when the thickness gauge fails, the method further comprises: when the thickness gauge fails, the thickness gauge alarms and starts a self-protection program, and performs high-voltage power-off.

[0012] In some embodiments of the present application, based on the foregoing scheme, after the thickness gauge fails for a preset time, the thickness gauge stops reporting the thickness measurement value for the strip steel to the temper mill, and the temper mill stops operating.

[0013] In some embodiments of the present application, based on the foregoing scheme, the failures of the thickness gauge include failures of a cooling water system flow sensor of the thickness gauge, failures of an X-ray emitting source and a receiving detection head, and damage to components of the thickness gauge.

[0014] According to a second aspect of the embodiments of the present application, a device for preventing strip steel from being broken in a temper mill is provided, the device comprising: a receiving unit configured to receive, in real time, a thickness measurement value for strip steel in a temper mill reported by a thickness gauge, wherein a rolling force applied to the strip steel by the temper mill is positively correlated with the thickness measurement value; a calculating unit configured to calculate, when the thickness gauge fails, a thickness difference value between the thickness measurement value and a thickness set value; and a judging unit configured to, if the thickness difference value exceeds a preset threshold, receive the thickness set value as a new thickness measurement value, so as to determine the rolling force applied to the strip steel by the temper mill according to the new thickness measurement value.

[0015] According to a third aspect of the embodiments of the present application, a computer readable storage medium is provided, 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 method for preventing strip steel from being broken in a temper mill.

[0016] According to a fourth aspect of the embodiments of the present application, an electronic device is provided, the electronic device comprising a memory and a processor, the memory storing a computer program, characterized in that the processor executes the computer program to implement the operations performed by the method for preventing strip breakage in a temper mill as described above.

[0017] From the above technical solution, the present application has at least the following advantages and positive effects:

[0018] By adopting the scheme provided in the present application, the problem of strip breakage in the temper mill caused by the failure of the thickness gauge can be solved, the stable production of the strip production line is ensured, and the high-quality production of the strip can also be ensured, thereby improving the quality and production efficiency of the strip. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the present application, the drawings needed in the embodiment description 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.

[0020] Figure 1 A flow chart of the method for preventing strip breakage in a temper mill in an embodiment of the present application is shown;

[0021] Figure 2 A block diagram of the device for preventing strip breakage in a temper mill in an embodiment of the present application is shown;

[0022] Figure 3 The structural schematic diagram of a computer system suitable for implementing the electronic device of the embodiments of the present application is shown. DETAILED DESCRIPTION

[0023] 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 implementations set forth herein; rather, these implementations are provided so that this disclosure will be thorough and complete, and will fully convey the inventive aspects of example implementations to those skilled in the art. Like reference numerals may refer to like elements throughout the description of the figures.

[0024] 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 application can be practiced without one or more of the specific details, or with other methods, components, materials, and so forth. In other instances, well-known structures, devices, implementations, or operations are not shown or described in detail to avoid obscuring aspects of the application.

[0025] The flowcharts shown in the drawings are only illustrative, and do not necessarily include all the contents and operations / steps, nor are they necessarily executed in the order described. For example, some operations / steps can be further decomposed, and some operations / steps can be combined or partially combined, so the actual execution order can be changed according to actual conditions.

[0026] It should be noted that the terms "first", "second", and the like in the specification and claims of the present application and the above-described drawings are used to distinguish similar objects, and do not necessarily 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.

[0027] The implementation details of the technical solutions of the embodiments of the present application are described in detail as follows:

[0028] Referring to Figure 1 , Figure 1 A flowchart of a method for preventing strip breakage in a temper mill in an embodiment of the present application.

[0029] According to a typical embodiment of the present application, a method for preventing strip breakage in a temper mill is provided, which includes the following steps S1 to S3:

[0030] Step S1, real-time receiving of a thickness measurement value for a strip in a temper mill reported by a thickness gauge, the rolling force applied to the strip by the temper mill being positively correlated with the thickness measurement value.

[0031] Step S2, when the thickness gauge fails, calculating a thickness difference between the thickness measurement value and a thickness set value.

[0032] Step S3, if the thickness difference exceeds a preset threshold value, receiving the thickness set value as a new thickness measurement value to determine the rolling force applied to the strip by the temper mill according to the new thickness measurement value.

[0033] In the present application, the thickness gauge can obtain a thickness measurement value for a strip in a temper mill in real time, and the rolling force applied to the strip by the temper mill is positively correlated with the thickness measurement value, i.e. the greater the thickness measurement value, the greater the rolling force applied to the strip by the temper mill.

[0034] In the present application, the production system of the strip steel can include a primary system and a secondary system, the primary system can be a control system of a production line, the secondary system can be an information system of an order plan, when starting to produce the strip steel according to the order requirement, the secondary system sends a thickness set value of the strip steel required by the order to the primary system, meanwhile, the primary system can also receive the thickness measurement value of the strip steel in the temper mill reported by the thickness gauge in real time, when the thickness gauge fails, the PLC module in the production system calculates the thickness difference between the thickness measurement value and the thickness set value when the primary system receives the thickness set value of the strip steel sent by the secondary system and the thickness measurement value of the strip steel in the temper mill reported by the thickness gauge.

[0035] In the present application, after the PLC module in the production system calculates the thickness difference between the thickness measurement value and the thickness set value, the PLC module further judges the calculation result, if the thickness difference exceeds a preset threshold value, the primary system receives the thickness set value as a new thickness measurement value to determine the rolling force applied to the strip steel by the temper mill according to the new thickness measurement value, to prevent the thickness measurement value of the strip steel sent by the thickness gauge when the thickness gauge fails from being inaccurate, which leads to the accident of strip breakage in the temper mill caused by the rolling force applied to the strip steel by the temper mill being too large when the inaccurate thickness measurement value is received.

[0036] In an embodiment of the present application, the method further includes:

[0037] If the thickness difference does not exceed the preset threshold value, the rolling force applied to the strip steel by the temper mill is determined according to the thickness measurement value received by the thickness gauge in real time.

[0038] In the present application, after the PLC module in the production system calculates the thickness difference between the thickness measurement value and the thickness set value, the PLC module further judges the calculation result, if the thickness difference does not exceed the preset threshold value, the primary system determines the rolling force applied to the strip steel by the temper mill according to the thickness measurement value received by the thickness gauge in real time, to avoid the accident of strip breakage in the temper mill caused by the rolling force applied to the strip steel by the temper mill being too large according to the inaccurate thickness measurement value of the strip steel when the thickness measurement value of the strip steel sent by the thickness gauge fails is inaccurate.

[0039] In an embodiment of the present application, the method further includes:

[0040] Obtaining a tolerance ratio of the thickness difference.

[0041] Calculating the preset threshold value according to the thickness set value and the tolerance ratio.

[0042] In an embodiment of the present application, the tolerance ratio can be set to 4% to 6%.

[0043] In the present application, in order to avoid the inaccuracy of the thickness measurement value of the strip steel sent by the thickness gauge after the thickness gauge fails, resulting in the strip steel in the temper mill being broken due to the temper mill applying excessive rolling force to the strip steel according to the inaccurate thickness measurement value of the strip steel, it is necessary to calculate the thickness difference between the thickness measurement value and the thickness set value sent by the thickness gauge after the thickness gauge fails, and then judge whether the thickness difference exceeds the preset threshold value. Here, the preset threshold value needs to be calculated first, the tolerance ratio of the thickness difference is obtained first, and then the preset threshold value is calculated according to the thickness set value and the tolerance ratio. In the present application, the tolerance ratio can be set to 4% to 6%, and specifically can be set to 5%. When the thickness difference exceeds the preset threshold value (the absolute value of the difference between the thickness measurement value and the thickness set value is greater than 5% of the thickness set value), the thickness set value is received as a new thickness measurement value, so as to determine the rolling force applied to the strip steel by the temper mill according to the new thickness measurement value, thereby avoiding the accident of the strip steel being broken in the temper mill.

[0044] In an embodiment of the present application, when the thickness gauge fails, the method further comprises:

[0045] When the thickness gauge fails, the thickness gauge alarms and starts a self-protection program, and performs high-voltage power-off.

[0046] In the present application, when the thickness gauge fails, in order to ensure the safety of the thickness gauge equipment and avoid the failure of the thickness gauge burning out or being scrapped, when the thickness gauge fails, the thickness gauge will alarm and start a self-protection program, perform high-voltage power-off, and stop operating, which is beneficial to reduce economic losses and avoid long production line shutdown.

[0047] In an embodiment of the present application, after the thickness gauge fails for a preset time, the thickness gauge stops reporting the thickness measurement value of the strip steel to the temper mill, and the temper mill stops operating.

[0048] In the present application, after the thickness gauge fails for a preset time, the state information of the thickness gauge disappears, the thickness gauge stops reporting the thickness measurement value of the strip steel to the temper mill, and the temper mill stops operating. Here, the preset time can be 0.9s, or other time, which is not particularly limited in the present application.

[0049] In an embodiment of the present application, the failure of the thickness gauge can include the failure of the thickness gauge cooling water system flow sensor, the failure of the X-ray emitting source and the receiving detection head, and the damage of the thickness gauge components.

[0050] In the present application, the thickness gauge fails, which can include thickness gauge cooling water system flow sensor failure, X-ray emitting source and receiving detection head failure, thickness gauge other component damage, or other failures of the thickness gauge, which are not particularly limited in the present application. The method proposed in the present application can solve the strip breakage accident of the strip in the temper mill caused by the abnormality of the thickness gauge.

[0051] Referring to Figure 2 , Figure 2 A block diagram of a device for preventing strip breakage in a temper mill is shown in an embodiment of the present application.

[0052] According to a typical embodiment of the present application, the present application further proposes a device 200 for preventing strip breakage in a temper mill, which comprises:

[0053] A receiving unit 201 is configured to receive a thickness measurement value of a strip in a temper mill reported by a thickness gauge in real time, and the rolling force applied to the strip by the temper mill is positively correlated with the thickness measurement value.

[0054] A calculating unit 202 is configured to calculate a thickness difference between the thickness measurement value and a thickness set value when the thickness gauge fails.

[0055] A judging unit 203 is configured to receive the thickness set value as a new thickness measurement value if the thickness difference exceeds a preset threshold value, so as to determine the rolling force applied to the strip by the temper mill according to the new thickness measurement value.

[0056] Referring to Figure 3 , Figure 3 A structural schematic diagram of a computer system of an electronic device suitable for implementing the embodiments of the present application is shown.

[0057] As Figure 3 shown, the computer system 300 comprises a central processing unit (CPU) 301, which can perform various appropriate actions and processes according to programs stored in a read-only memory (ROM) 302 or programs loaded from a storage portion 308 into a random access memory (RAM) 303, such as the method described in the above embodiments. In the RAM 303, various programs and data required for system operation are also stored. The CPU 1101, the ROM 302, and the RAM 303 are connected to each other through a bus 304. An input / output (I / O) interface 305 is also connected to the bus 304.

[0058] The following components are connected to the I / O interface 305: an input section 306 including input devices such as a keyboard and mouse; an output section 307 including output devices such as a Cathode Ray Tube (CRT), a Liquid Crystal Display (LCD), and a speaker; a storage section 308 including a hard disk; and a communication section 309 including a network interface card such as a LAN (Local Area Network) card, a modem, and the like. The communication section 309 performs communication processing via a network such as the Internet. A drive 310 is also connected to the I / O interface 305 as necessary. A removable media 311 such as a magnetic disk, an optical disk, a magneto-optical disk, a semiconductor memory, and the like is attached to the drive 310 as necessary, so that a computer program read out therefrom is installed in the storage section 308 as necessary.

[0059] 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 via the communication section 309, and / or installed from the removable media 311. When the computer program is executed by the Central Processing Unit (CPU) 301, various functions defined in the system of the present application are executed.

[0060] 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 computer-readable program code in a baseband or as a part of a carrier wave. Such a propagated data signal can take on 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 that can send, propagate or transmit a program for use by or in connection 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.

[0061] 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 they can also be executed 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 special-purpose hardware and computer instructions.

[0062] 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.

[0063] 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 method for preventing strip breakage in a temper mill.

[0064] 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 implements the method for preventing strip breakage in a temper mill when executing the computer program.

[0065] 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.

[0066] From the above technical solutions, the present application has at least the following advantages and positive effects:

[0067] Firstly, the scheme proposed in the present application can solve the problem of strip breakage in the temper mill caused by the failure of the thickness gauge, and ensure the stable production of the strip production line.

[0068] Secondly, the scheme proposed in the present application can ensure high-quality production of the strip, improve the quality and production efficiency of the strip, and increase market competitiveness and capital income.

[0069] Thirdly, the scheme proposed in the present application can greatly reduce the scrap amount of the strip and the damage amount of the equipment, greatly saving resources and equipment maintenance funds.

[0070] 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 method of preventing strip breakage in a temper mill, characterized by, The method comprises: receiving in real time a thickness measurement value of a strip steel in a temper mill reported by a thickness gauge, the rolling force applied to the strip steel by the temper mill being positively correlated with the thickness measurement value; calculating a thickness difference between the thickness measurement value and a thickness set value when the thickness gauge fails; obtaining a tolerance ratio of the thickness difference, calculating a preset threshold value according to the thickness set value and the tolerance ratio; if the thickness difference exceeds the preset threshold value, receiving the thickness set value as a new thickness measurement value to determine the rolling force applied to the strip steel by the temper mill according to the new thickness measurement value, the rolling force applied to the strip steel by the temper mill being positively correlated with the thickness measurement value; if the thickness difference does not exceed the preset threshold value, determining the rolling force applied to the strip steel by the temper mill according to the thickness measurement value reported by the thickness gauge in real time.

2. The method of claim 1, wherein, The tolerance ratio is set to 4% to 6%.

3. The method of claim 2, wherein, When the thickness gauge fails, the method further comprises: when the thickness gauge fails, the thickness gauge alarms and starts a self-protection program, and is powered off at high pressure.

4. The method of claim 3, wherein, After a preset time of the thickness gauge failing, the thickness gauge stops reporting the thickness measurement value of the strip steel to the temper mill, and the temper mill stops operating.

5. The method of claim 1, wherein, The failures of the thickness gauge include failures of a flow sensor of a cooling water system of the thickness gauge, failures of an X-ray emitting source and a receiving detection head, and damages of components of the thickness gauge.

6. An apparatus for preventing strip breakage in a temper mill, characterized by The device comprises: a receiving unit configured to receive in real time a thickness measurement value of a strip steel in a temper mill reported by a thickness gauge, the rolling force applied to the strip steel by the temper mill being positively correlated with the thickness measurement value; a calculating unit configured to calculate a thickness difference between the thickness measurement value and a thickness set value when the thickness gauge fails, and obtain a tolerance ratio of the thickness difference, and calculate a preset threshold value according to the thickness set value and the tolerance ratio; a judging unit configured to, if the thickness difference exceeds the preset threshold value, receive the thickness set value as a new thickness measurement value to determine the rolling force applied to the strip steel by the temper mill according to the new thickness measurement value, the rolling force applied to the strip steel by the temper mill being positively correlated with the thickness measurement value, and if the thickness difference does not exceed the preset threshold value, determine the rolling force applied to the strip steel by the temper mill according to the thickness measurement value reported by the thickness gauge in real time.

7. A computer readable storage medium characterized in that, The computer readable storage medium stores at least one program code, the at least one program code is loaded and executed by the processor to realize the operations performed by the method according to any one of claims 1 to 5. 8.An electronic device comprising a memory and a processor, the memory storing a computer program, wherein, The processor executes the computer program to realize the operations performed by the method according to any one of claims 1 to 5.

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