CN116060455A - Rolling mill second flow thickness control method and device and electronic equipment - Google Patents

Rolling mill second flow thickness control method and device and electronic equipment Download PDF

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Publication number
CN116060455A
CN116060455A CN202310025582.8A CN202310025582A CN116060455A CN 116060455 A CN116060455 A CN 116060455A CN 202310025582 A CN202310025582 A CN 202310025582A CN 116060455 A CN116060455 A CN 116060455A
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China
Prior art keywords
flow
thickness
rolling mill
inlet
steering roller
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CN202310025582.8A
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Chinese (zh)
Inventor
王健顺
刘志刚
武琦
祝志飞
孙抗
沈福磊
吉志明
鲁松
赵代超
唐福山
高永宽
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Shougang Jingtang United Iron and Steel Co Ltd
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Shougang Jingtang United Iron and Steel Co Ltd
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Priority to CN202310025582.8A priority Critical patent/CN116060455A/en
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    • 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
    • B21B38/04—Methods or devices for measuring, detecting or monitoring specially adapted for metal-rolling mills, e.g. position detection, inspection of the product for measuring thickness, width, diameter or other transverse dimensions of the product
    • 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
    • B21B37/16—Control of thickness, width, diameter or other transverse dimensions
    • B21B37/165—Control of thickness, width, diameter or other transverse dimensions responsive mainly to the measured thickness of the product
    • 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
    • B21B37/16—Control of thickness, width, diameter or other transverse dimensions
    • B21B37/18—Automatic gauge control
    • 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
    • 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
    • B21B2038/004—Measuring scale thickness
    • 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

Abstract

The invention discloses a second flow thickness control method, a second flow thickness control device and electronic equipment of a rolling mill, which are used for judging whether the working state of a velocimeter on any side of a target rack on the rolling mill is a fault or not; if the working state of the velocimeter at any side of the target frame is a fault, obtaining the strip steel thickness deviation value detected by the inlet turning roll motor speed measurement, the outlet turning roll motor speed measurement and the inlet thickness gauge of the target frame; and finally, determining the roll gap position variation of the second flow of the target stand according to the obtained speed measurement of the inlet steering roller motor of the target stand, the speed measurement of the outlet steering roller motor and the thickness deviation value of the strip steel detected by the inlet thickness gauge so as to control the rolling thickness of the rolling mill. Therefore, when the velocimeter fails, the speed is measured by adopting the steering roller motor, and the second flow thickness control is performed, so that the rolling machine can continue to finish rolling of the current rolled piece under the condition of no stopping, and the production efficiency is improved.

Description

Rolling mill second flow thickness control method and device and electronic equipment
Technical Field
The invention relates to the technical field of rolling mill control, in particular to a rolling mill second flow thickness control method and device and electronic equipment.
Background
An important index of a single-stand rolling mill is that the thickness of a product reaches the standard, and the thickness precision is generally required to be controlled within a range of +/-3 percent. Therefore, the machine set is equipped with precise detection instruments such as a thickness gauge, a velometer and the like, and the on-site data is collected in real time to control the second flow thickness. However, the velocimeter is easily damaged due to the high temperature and high humidity and corrosion of the emulsion in the frame, so that the second flow thickness control cannot work, and the unit is forced to stop. Each time the fault causes a large amount of waste products of the steel coil, replacement of spare parts delays the productivity of the rolling mill by about 3.5 hours, and the working efficiency of the rolling mill is affected.
Therefore, how to avoid stopping the rolling mill in the production process is a problem which we need to solve at present.
Disclosure of Invention
In view of the above problems, the present invention has been made to provide a method, an apparatus, and an electronic device for controlling a second flow thickness of a rolling mill, which perform second flow thickness control by measuring a speed by a steering roller motor when a tachometer fails, so that the rolling mill continues to produce.
According to a first aspect of the present invention, there is provided a rolling mill second flow thickness control method comprising:
judging whether the working state of a velocimeter on any side of a target rack on the rolling mill is a fault or not;
if the working state of the velocimeter at any side of the target frame is a fault, obtaining the strip steel thickness deviation value detected by the inlet turning roll motor speed measurement, the outlet turning roll motor speed measurement and the inlet thickness gauge of the target frame;
and determining the roll gap position variation of the second flow of the target stand according to the obtained speed measurement of the inlet steering roller motor of the target stand, the speed measurement of the outlet steering roller motor and the thickness deviation value of the strip steel detected by the inlet thickness gauge so as to control the rolling thickness of the rolling mill.
Optionally, determining the roll gap position variation of the second flow of the target frame according to the obtained strip steel thickness deviation values detected by the inlet steering roller motor speed measuring, the outlet steering roller motor speed measuring and the inlet thickness measuring instrument of the target frame, including:
determining and obtaining the thickness deviation value of the second flow of the target frame according to the obtained strip steel thickness deviation values detected by the inlet steering roller motor speed measurement, the outlet steering roller motor speed measurement and the inlet thickness meter of the target frame;
and determining and obtaining the roll gap position variation of the target frame second flow according to the thickness deviation of the target frame second flow.
Optionally, determining the thickness deviation value of the second flow of the target frame according to the obtained strip steel thickness deviation values detected by the inlet steering roller motor speed measuring, the outlet steering roller motor speed measuring and the inlet thickness measuring instrument of the target frame, including:
according to the obtained strip steel thickness deviation values detected by the target rack inlet steering roller motor speed measurement and the outlet steering roller motor speed measurement and the inlet thickness gauge, the thickness deviation value of the target rack second flow is determined by the following formula:
Figure BDA0004044443260000021
wherein Deltah is the thickness deviation value calculated by the second flow, V Steering roller For measuring speed of motor of inlet steering roller, V Go out steering roller And measuring the speed of the motor of the outlet steering roller, wherein DeltaH is the thickness deviation value of the strip steel detected by the inlet thickness gauge.
Optionally, determining the roll gap position variation of the target frame second flow according to the thickness deviation of the target frame second flow includes:
according to the thickness deviation of the second flow of the target frame, determining the roll gap position change of the second flow of the target frame according to the following formula:
ΔS＝A*Δh+∫B*Δh*dt
wherein DeltaS is the roll gap position variation calculated by the second flow meter, deltah is the thickness deviation calculated by the second flow, A is the second flow feedforward coefficient, and B is the second flow feedback coefficient.
Optionally, judging whether the working state of the velocimeter on any side of the target stand on the rolling mill is a fault, including:
respectively obtaining laser quality factors of velocimeters on two sides of a target rack on a rolling mill;
if the value of the laser quality factor of the velocimeter at any side is smaller than a preset threshold value, judging that the working state of the velocimeter at any side of the target rack on the rolling mill is a fault.
Optionally, the preset threshold is 20%.
Optionally, the rolling mill is a single stand rolling mill.
According to a second aspect of the present invention, there is provided a rolling mill second flow thickness control device comprising:
the fault judging module is used for judging whether the working state of the velocimeter at any side of the target rack on the rolling mill is a fault or not;
the first processing module is used for acquiring the speed measurement of the inlet steering roller motor, the speed measurement of the outlet steering roller motor and the thickness deviation value of the strip steel detected by the inlet thickness gauge of the target rack if the working state of the velocimeter at any side of the target rack is a fault;
the second processing module is used for determining and obtaining the roll gap position variation of the second flow of the target stand according to the obtained strip steel thickness deviation values detected by the inlet steering roller motor speed measuring, the outlet steering roller motor speed measuring and the inlet thickness measuring instrument of the target stand so as to control the rolling thickness of the rolling mill.
According to a third aspect of the present invention, there is provided an electronic device comprising: the rolling mill second flow thickness control method comprises a memory, a processor and a computer program which is stored in the memory and can run on the processor, wherein the processor executes the computer program to realize the rolling mill second flow thickness control method.
According to a fourth aspect of the present invention there is provided a computer readable storage medium having stored thereon a computer program which when executed by a processor implements the rolling mill second flow thickness control method described previously.
The above-mentioned one or more technical solutions in the embodiments of the present disclosure at least have the following technical effects:
according to the second flow thickness control method, the second flow thickness control device and the electronic equipment for the rolling mill, when the velocimeter fails, the second flow thickness control is performed by adopting the steering roller motor to measure the speed. The rolling mill can continue to finish rolling of the current rolled piece under the condition of no stop, the rolled piece is prevented from becoming waste, the production cost is reduced, and the production efficiency is improved.
The foregoing description is only an overview of the present invention, and is intended to be implemented in accordance with the teachings of the present invention in order that the same may be more clearly understood and to make the same and other objects, features and advantages of the present invention more readily apparent.
Drawings
Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also throughout the drawings, like reference numerals are used to designate like parts.
In the drawings:
FIG. 1 shows a schematic view of a single stand rolling mill in an embodiment of the invention.
Fig. 2 shows a schematic diagram of an electronic device in an embodiment of the invention.
FIG. 3 shows a flow chart of a rolling mill second flow thickness control method in an embodiment of the invention.
Fig. 4 shows a block schematic diagram of a rolling mill second flow thickness control device in an embodiment of the invention.
Icon:
100-an electronic device; 10-a second flow thickness control device of the rolling mill; 11-a fault judging module; 12-a first processing module; 13-a second processing module; 20-memory; 30-a processor; 40-communication unit.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. The components of the embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.
In the description of the present invention, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
An important index of a single-stand rolling mill is that the thickness of a product reaches the standard, and the thickness precision is generally required to be controlled within a range of +/-3 percent. Therefore, the machine set is equipped with precise detection instruments such as a thickness gauge and a velometer, and the like, and acquires field data in real time to control the second flow thickness, for example, as shown in fig. 1. However, the velocimeter is easily damaged due to the high temperature and high humidity and corrosion of the emulsion in the frame, so that the second flow thickness control cannot work, and the unit is forced to stop. Each time the fault causes a large amount of waste products of the steel coil, replacement of spare parts delays the productivity of the rolling mill by about 3.5 hours, and the working efficiency of the rolling mill is affected.
Based on the above-mentioned research content, the embodiment provides a rolling mill second flow thickness control method, a rolling mill second flow thickness control device and an electronic device, when a velocimeter fails, the second flow thickness control is performed through the speed measurement of a steering roller motor, so that the rolling mill can continue to produce.
Referring to fig. 2, fig. 2 is a block diagram of an electronic device 100 according to the present embodiment. As shown in fig. 2, the electronic device may include a rolling mill second flow thickness control apparatus 10, a memory 20, a processor 30, and a communication unit 40, where the memory 20 stores machine readable instructions executable by the processor 30, and when the electronic device 100 is operated, the processor 30 and the memory 20 communicate with each other through a bus, and the processor 30 executes the machine readable instructions and performs a rolling mill second flow thickness control method.
The memory 20, the processor 30 and the communication unit 40 are electrically connected directly or indirectly to each other to realize signal transmission or interaction. For example, the components may be electrically connected to each other via one or more communication buses or signal lines. The rolling mill second flow thickness control device 10 includes at least one software function module that may be stored in the memory 20 in the form of software or firmware (firmware). The processor 30 is configured to execute executable modules (e.g., software functional modules or computer programs included in the rolling mill second flow thickness control device 10) stored in the memory 20.
The Memory 20 may be, but is not limited to, a random access Memory (Random Access Memory, RAM), a Read Only Memory (ROM), a programmable Read Only Memory (Programmable Read-Only Memory, PROM), an erasable Read Only Memory (Erasable Programmable Read-Only Memory, EPROM), an electrically erasable Read Only Memory (Electric Erasable Programmable Read-Only Memory, EEPROM), etc.
In some embodiments, processor 30 is configured to perform one or more of the functions described in this embodiment. In some embodiments, processor 30 may include one or more processing cores (e.g., a single core processor (S) or a multi-core processor (S)). By way of example only, processor 30 may include a central processing unit (Central Processing Unit, CPU), application specific integrated circuit (Application Specific Integrated Circuit, ASIC), special instruction set processor (Application Specific Instruction-setProcessor, ASIP), graphics processing unit (Graphics Processing Unit, GPU), physical processing unit (Physics Processing Unit, PPU), digital signal processor (Digital Signal Processor, DSP), field programmable gate array (Field Programmable Gate Array, FPGA), programmable logic device (Programmable Logic Device, PLD), controller, microcontroller unit, reduced instruction set computer (ReducedInstruction Set Computing, RISC), microprocessor, or the like, or any combination thereof.
For ease of illustration, only one processor is depicted in the electronic device 100. It should be noted, however, that the electronic device 100 in the present embodiment may also include a plurality of processors, and thus the steps performed by one processor described in the present embodiment may also be performed jointly by a plurality of processors or performed separately. For example, if the processor of the server performs step a and step B, it should be understood that step a and step B may also be performed by two different processors together or performed separately in one processor. For example, the processor performs step a, the second processor performs step B, or the processor and the second processor together perform steps a and B.
In this embodiment, the memory 20 is used for storing a program, and the processor 30 is used for executing the program after receiving an execution instruction. The method of defining a flow disclosed in any embodiment of the present invention may be applied to the processor 30, or implemented by the processor 30.
The communication unit 40 is used for establishing a communication connection between the electronic device 100 and other devices through a network, and for transceiving data through the network.
In some embodiments, the network may be any type of wired or wireless network, or a combination thereof. By way of example only, the network may include a wired network, a wireless network, a fiber optic network, a telecommunications network, an intranet, the Internet, a local area network (Local Area Network, LAN), a wide area network (Wide Area Network, WAN), a wireless local area network (Wireless Local Area Networks, WLAN), a metropolitan area network (Metropolitan Area Network, MAN), a wide area network (Wide Area Network, WAN), a public switched telephone network (Public Switched Telephone Network, PSTN), a Bluetooth network, a ZigBee network, a near field communication (Near Field Communication, NFC) network, or the like, or any combination thereof.
In this embodiment, the electronic device 100 may be, but is not limited to, a notebook computer, an ultra-mobile personal computer (UMPC), a netbook, a personal digital assistant (Personal Digital Assistant, PDA), etc., and the embodiment is not limited in particular type of electronic device.
It will be appreciated that the structure shown in fig. 2 is merely illustrative. The electronic device 100 may also have more or fewer components than shown in fig. 2, or have a different configuration than shown in fig. 2. The components shown in fig. 2 may be implemented in hardware, software, or a combination thereof.
Based on the implementation architecture of fig. 2, the present embodiment provides a rolling mill second flow thickness control method, which is executed by the electronic device 100 shown in fig. 2, and the steps of the rolling mill second flow thickness control method provided in the present embodiment are explained in detail below based on the structural diagram of the electronic device 100 shown in fig. 2, and in combination with fig. 3, the rolling mill second flow thickness control method includes steps 101 to 103:
step 101: judging whether the working state of the velocimeter at any side of the target rack on the rolling mill is a fault or not.
The rolling mill can be a multi-stand rolling mill or a single-stand rolling mill. It should be noted that, if the rolling mill is a multi-stand rolling mill, the two sides of each stand are provided with velocimeters, and one stand to be tested is set as a target stand. In the case of a single stand rolling mill, the only stand on the mill is set as the target stand. In the embodiment, the rolling mill is a single-frame rolling mill, and a velocimeter, a thickness meter, a left steering roller, a right steering roller and the like are arranged on two sides of the frame.
In this embodiment, the working states of the tachometer are classified into normal and fault, if the working states of the tachometer on both sides are normal, the rolling mill is normally produced, and if the tachometer is faulty, the control method needs to be switched. And judging whether the working state of the velocimeter is a fault or not has various embodiments. For example, the velocimeter can automatically send fault information to electronic equipment of the rolling mill, such as a PLC or a controller, and the electronic equipment can judge that the working state of the velocimeter is fault after receiving the sent fault information. Further, considering that the tachometer measures the speed by emitting a laser beam, the working state of the tachometer can be judged by the laser quality factor of the tachometer. Respectively acquiring laser quality factors of velocimeters on two sides of a target rack on a rolling mill; if the value of the laser quality factor of the velocimeter at any side is smaller than a preset threshold, for example, the preset threshold is 20%, the working state of the velocimeter at any side of the target rack on the rolling mill is judged to be a fault. The laser quality factor refers to the recovery rate of laser emitted by the velocimeter. For example, if the laser quality factor of the velocimeter on the left side of the target rack is 18%, the working state of the velocimeter on the target rack is judged to be a fault, and the data measured by the velocimeters on the two sides are not used any more until the fault velocimeter is replaced.
Step 102: if the working state of the velocimeter at any side of the target frame is a fault, obtaining the strip steel thickness deviation values detected by the inlet turning roll motor speed measurement, the outlet turning roll motor speed measurement and the inlet thickness gauge of the target frame.
In this embodiment, if the working state of any side of the target stand is a fault, it is described that the calculation method for controlling the thickness of the rolled piece needs to be switched to the control method of this embodiment. In the control method of the embodiment, the strip steel thickness deviation value detected by the target rack inlet steering roller motor speed measurement, the outlet steering roller motor speed measurement and the inlet thickness gauge is needed.
It should be noted that, the rolling mill always acquires the speed measurement of the inlet steering roller motor, the speed measurement of the outlet steering roller motor and the thickness deviation value of the strip steel detected by the inlet thickness gauge in real time during operation, but is not used for calculating the thickness control, and the acquired speed measurement of the inlet steering roller motor, the speed measurement of the outlet steering roller motor and the thickness deviation value of the strip steel detected by the inlet thickness gauge of the target stand can be put into use only when the working state of the speed gauge on any side of the target stand is a fault.
Step 103: and determining the roll gap position variation of the second flow of the target stand according to the obtained speed measurement of the inlet steering roller motor of the target stand, the speed measurement of the outlet steering roller motor and the thickness deviation value of the strip steel detected by the inlet thickness gauge so as to control the rolling thickness of the rolling mill.
Specifically, the thickness deviation value of the second flow of the target frame is determined and obtained according to the obtained strip steel thickness deviation values of the speed measurement of the inlet steering roller motor, the speed measurement of the outlet steering roller motor and the detection of the inlet thickness gauge of the target frame;
and determining and obtaining the roll gap position variation of the target frame second flow according to the thickness deviation of the target frame second flow. The thickness of the rolled piece can be adjusted in the rolling process by adjusting the size of the roll gap.
The thickness deviation of the target gantry second flow can be determined by the following equation:
Figure BDA0004044443260000061
wherein, the liquid crystal display device comprises a liquid crystal display device, Δh is the thickness deviation calculated in seconds flow, V Steering in roller For measuring speed of motor of inlet steering roller, V Go out steering roller And measuring the speed of the motor of the outlet steering roller, wherein DeltaH is the thickness deviation value of the strip steel detected by the inlet thickness gauge.
The roll gap position variation for obtaining the second flow of the target frame can be determined by the following formula:
ΔS＝A*Δh+∫B*Δh*dt
wherein DeltaS is the roll gap position variation calculated by the second flow meter, deltah is the thickness deviation calculated by the second flow, A is the second flow feedforward coefficient, B is the second flow feedback coefficient, and after the rolling mill and the rolled piece are determined, the values of A and B can be determined according to the rigidity of the rolling mill and the plastic deformation coefficient of the rolled piece, which is the prior art.
After the test, the method of the embodiment reduces the shutdown of a single rolling mill for 3 times per year due to the fault of a velocimeter, reduces the shutdown time for 3.5 hours per time, reduces the waste products of rolled pieces by 3 tons, and generates economic benefits of [3 x (5000-2000) +3.5 x 1000] x3=3.75 ten thousand yuan per year according to the calculation of 5000 yuan per ton of product selling price, 2000 yuan per ton of waste products and 1000 yuan per ton of machine set efficiency benefit.
In summary, the second flow thickness control method for the rolling mill provided by the embodiment of the specification performs second flow thickness control by measuring the speed by adopting the steering roller motor when the velocimeter fails. The rolling mill can continue to finish rolling of the current rolled piece under the condition of no stop, the rolled piece is prevented from becoming waste, the production cost is reduced, and the production efficiency is improved.
Based on the same inventive concept, referring to fig. 4, the embodiment of the invention further provides a rolling mill second flow thickness control device 10, which comprises a fault judging module 11, a first processing module 12 and a second processing module 13.
The fault judging module 11 is used for judging whether the working state of the velocimeter at any side of the target rack on the rolling mill is a fault or not;
the first processing module 12 is configured to obtain a speed measurement of the inlet steering roller motor, a speed measurement of the outlet steering roller motor, and a deviation value of the thickness of the strip steel detected by the inlet thickness gauge of the target frame if the working state of the velocimeter on either side of the target frame is a failure;
the second processing module 13 is configured to determine a roll gap position variation of the second flow rate of the target stand according to the obtained strip steel thickness deviation values detected by the inlet steering roller motor speed measurement, the outlet steering roller motor speed measurement and the inlet thickness gauge of the target stand, so as to control the rolling thickness of the rolling mill.
In an alternative embodiment, the second processing module 13 is further configured to:
determining and obtaining the thickness deviation value of the second flow of the target frame according to the obtained strip steel thickness deviation values detected by the inlet steering roller motor speed measurement, the outlet steering roller motor speed measurement and the inlet thickness meter of the target frame;
and determining and obtaining the roll gap position variation of the target frame second flow according to the thickness deviation of the target frame second flow.
In an alternative embodiment, the second processing module 13 is further configured to:
according to the obtained strip steel thickness deviation values detected by the target rack inlet steering roller motor speed measurement and the outlet steering roller motor speed measurement and the inlet thickness gauge, the thickness deviation value of the target rack second flow is determined by the following formula:
Figure BDA0004044443260000071
wherein Deltah is the thickness deviation value calculated by the second flow, V Steering roller For measuring speed of motor of inlet steering roller, V Go out steering roller And measuring the speed of the motor of the outlet steering roller, wherein DeltaH is the thickness deviation value of the strip steel detected by the inlet thickness gauge.
In an alternative embodiment, the second processing module 13 is further configured to:
according to the thickness deviation of the second flow of the target frame, determining the roll gap position change of the second flow of the target frame according to the following formula:
ΔS＝A*Δh+∫B*Δh*dt
wherein DeltaS is the roll gap position variation calculated by the second flow meter, deltah is the thickness deviation calculated by the second flow, A is the second flow feedforward coefficient, and B is the second flow feedback coefficient.
In an alternative embodiment, the fault determination module 11 is further configured to:
respectively obtaining laser quality factors of velocimeters on two sides of a target rack on a rolling mill;
if the value of the laser quality factor of the velocimeter at any side is smaller than a preset threshold value, judging that the working state of the velocimeter at any side of the target rack on the rolling mill is a fault.
In summary, the second flow thickness control device for the rolling mill provided by the embodiment of the specification performs second flow thickness control by measuring the speed by adopting the steering roller motor when the velocimeter fails. The rolling mill can be stopped, the rolling of the current rolled piece is continuously completed, the rolled piece is prevented from being changed into waste products, the production cost is reduced, and meanwhile, the production efficiency is improved.
It will be clear to those skilled in the art that, for convenience and brevity of description, the specific working process of the second flow thickness control device for rolling mill described above may refer to the corresponding process in the foregoing method, and will not be described in detail herein.
On the basis of the above, the present embodiment provides a readable storage medium, on which a computer program is stored, which when executed by a processor, implements the rolling mill second flow thickness control method of any one of the foregoing embodiments.
It will be clear to those skilled in the art that, for convenience and brevity of description, reference may be made to corresponding procedures in the foregoing method for the specific working procedure of the readable storage medium described above, and thus, redundant description is not necessary.
In summary, the second flow thickness control method, the second flow thickness control device and the electronic equipment for the rolling mill provided by the embodiment of the specification are used for performing second flow thickness control by adopting the steering roller motor to measure the speed when the velocimeter fails. The rolling mill can be stopped, the rolling of the current rolled piece is continuously completed, the rolled piece is prevented from being changed into waste products, the production cost is reduced, and meanwhile, the production efficiency is improved.
The above is merely various embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can easily think about changes or substitutions within the technical scope of the present invention, and the changes and substitutions are intended to be covered in the protection scope of the present invention. Therefore, the protection scope of the invention is subject to the protection scope of the claims.

Claims (10)

1. A rolling mill second flow thickness control method, comprising:
judging whether the working state of a velocimeter on any side of a target rack on the rolling mill is a fault or not;
if the working state of the velocimeter at any side of the target frame is a fault, obtaining the strip steel thickness deviation value detected by the inlet turning roll motor speed measurement, the outlet turning roll motor speed measurement and the inlet thickness gauge of the target frame;
and determining the roll gap position variation of the second flow of the target stand according to the obtained speed measurement of the inlet steering roller motor of the target stand, the speed measurement of the outlet steering roller motor and the thickness deviation value of the strip steel detected by the inlet thickness gauge so as to control the rolling thickness of the rolling mill.
2. The method for controlling the second flow thickness of the rolling mill according to claim 1, wherein determining the roll gap position variation of the second flow of the target stand according to the obtained strip thickness deviation values detected by the inlet steering roller motor speed measuring, the outlet steering roller motor speed measuring and the inlet thickness measuring instrument of the target stand comprises:
determining and obtaining the thickness deviation value of the second flow of the target frame according to the obtained strip steel thickness deviation values detected by the inlet steering roller motor speed measurement, the outlet steering roller motor speed measurement and the inlet thickness meter of the target frame;
and determining and obtaining the roll gap position variation of the target frame second flow according to the thickness deviation of the target frame second flow.
3. The method for controlling the second flow thickness of the rolling mill according to claim 2, wherein determining the thickness deviation of the second flow of the target stand according to the obtained strip thickness deviation values detected by the inlet steering roller motor speed measuring, the outlet steering roller motor speed measuring and the inlet thickness measuring instrument of the target stand comprises:
according to the obtained strip steel thickness deviation values detected by the target rack inlet steering roller motor speed measurement and the outlet steering roller motor speed measurement and the inlet thickness gauge, the thickness deviation value of the target rack second flow is determined by the following formula:
Figure FDA0004044443250000011
wherein Deltah is the thickness deviation value calculated by the second flow, V Steering roller For measuring speed of motor of inlet steering roller, V Go out steering roller And measuring the speed of the motor of the outlet steering roller, wherein DeltaH is the thickness deviation value of the strip steel detected by the inlet thickness gauge.
4. The rolling mill second flow thickness control method according to claim 3, wherein the determining the roll gap position variation amount of the target stand second flow according to the thickness deviation amount of the target stand second flow includes:
according to the thickness deviation of the second flow of the target frame, determining the roll gap position change of the second flow of the target frame according to the following formula:
ΔS＝A*Δh+∫B*Δh*dt
wherein DeltaS is the roll gap position variation calculated by the second flow meter, deltah is the thickness deviation calculated by the second flow, A is the second flow feedforward coefficient, and B is the second flow feedback coefficient.
5. The method for controlling the second flow thickness of a rolling mill according to claim 1, wherein the step of judging whether the working state of the velocimeter on either side of the target stand on the rolling mill is a fault comprises the steps of:
respectively obtaining laser quality factors of velocimeters on two sides of a target rack on a rolling mill;
if the value of the laser quality factor of the velocimeter at any side is smaller than a preset threshold value, judging that the working state of the velocimeter at any side of the target rack on the rolling mill is a fault.
6. The rolling mill second flow thickness control method according to claim 5, wherein the preset threshold is 20%.
7. The rolling mill second flow thickness control method according to claim 1, wherein the rolling mill is a single stand rolling mill.
8. A rolling mill second flow thickness control device, comprising:
the fault judging module is used for judging whether the working state of the velocimeter at any side of the target rack on the rolling mill is a fault or not;
the first processing module is used for acquiring the speed measurement of the inlet steering roller motor, the speed measurement of the outlet steering roller motor and the thickness deviation value of the strip steel detected by the inlet thickness gauge of the target rack if the working state of the velocimeter at any side of the target rack is a fault;
the second processing module is used for determining and obtaining the roll gap position variation of the second flow of the target stand according to the obtained strip steel thickness deviation values detected by the inlet steering roller motor speed measuring, the outlet steering roller motor speed measuring and the inlet thickness measuring instrument of the target stand so as to control the rolling thickness of the rolling mill.
9. An electronic device, the electronic device comprising: a memory, a processor and a computer program stored on the memory and executable on the processor, the processor implementing the rolling mill second flow thickness control method of any one of claims 1-7 when the computer program is executed.
10. A computer readable storage medium, characterized in that it has stored thereon a computer program which, when executed by a processor, implements the rolling mill second flow thickness control method according to any one of claims 1-7.
CN202310025582.8A 2023-01-09 2023-01-09 Rolling mill second flow thickness control method and device and electronic equipment Pending CN116060455A (en)

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Application Number Priority Date Filing Date Title
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