A method for controlling the head springback of a first-pass slab between stands

Abstract

The application discloses a kind of first pass slab buckling head control methods between stands, belong to automatic control technical field, which comprises: calculating first pass slab buckling head control coefficient, to obtain slab first pass warping height calculation model;Obtain the first pass process parameters of the slab corresponding to the same furnace slab on current slab;Calculate the first pass warping height calculation value of the slab on same furnace slab;Obtain the first pass process parameters of current slab;Calculate the first pass snowshoe coefficient of current slab;Based on the first pass snowshoe coefficient of current slab, realize the automatic control of first pass slab buckling head between stands.The present application scheme can utilize reduction, snowshoe coefficient, pre-rolling warping height to realize the buckling head control of first pass slab between stands, effectively improve the control effect of first pass buckling head between stands.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of automatic control, in particular to a method for controlling the first-pass slab camber in the inter-stand. BACKGROUND

[0002] In the rough rolling process of hot continuous rolling, camber is a common defect. If the control effect of camber is not obvious, the rolled piece will impact the guard plate and the roller bed, and even cause a steel pile-up accident in severe cases. In the current rough rolling production process of hot continuous rolling, there are many types of slabs and the rolling rhythm is fast, so it is necessary to achieve good automatic control of the camber of the slab after the rolling specification is changed.

[0003] Using the sled coefficient to control the camber is the most commonly used method in existing control technology. This method adjusts the speed difference between the upper and lower rollers to achieve camber control in the head range of the slab. However, in the existing camber control technology, the influence of the slab camber height before rolling on the outlet slab camber is not considered, thereby causing the problem of the control effect of the first-pass camber between the stands not being ideal in the existing camber control technology, SUMMARY

[0004] The present application provides a method for controlling the first-pass slab camber between the stands, to solve the technical problem of the control effect of the first-pass camber between the stands not being ideal in the existing camber control technology.

[0005] To solve the above technical problems, the present application provides the following technical solutions:

[0006] On the one hand, the present application provides a method for controlling the first-pass slab camber between the stands, comprising:

[0007] calculating the first-pass slab camber control coefficient to obtain a slab first-pass camber height calculation model;

[0008] obtaining the first-pass process parameters of the slab above the current slab in the same furnace;

[0009] based on the first-pass process parameters of the slab above the current slab in the same furnace, using the slab first-pass camber height calculation model, calculating the first-pass camber height calculation value of the slab above the current slab in the same furnace;

[0010] obtaining the first-pass process parameters of the current slab;

[0011] based on the first-pass process parameters of the current slab, combining the first-pass process parameters of the slab above the current slab in the same furnace and the first-pass camber height calculation value of the slab above the current slab in the same furnace, calculating the first-pass sled coefficient of the current slab;

[0012] based on the first-pass sled coefficient of the current slab, realizing automatic control of the first-pass slab camber between the stands.

[0013] Further, the first pass slab camber head control coefficient of the first pass slab is calculated to construct a first pass slab camber height calculation model, comprising:

[0014] Obtaining first pass process parameters of a plurality of slabs in a historical rolling process; wherein the first pass process parameters of each slab comprise: a first pass reduction rate of the slab, a first pass ski coefficient of the slab, a first pass outlet camber height of the slab, and a first pass pre-rolling camber height of the slab;

[0015] Constructing a first pass slab camber height calculation model as follows:

[0016]

[0017] Wherein, i is the rack number, and its value is 2; Wh i is the first pass outlet camber height of the slab in the i-th rack; ε i is the first pass reduction rate of the slab in the i-th rack obtained on site; SKI i is the first pass ski coefficient of the slab in the i-th rack; Pre_Wh i is the first pass pre-rolling camber height of the slab in the i-th rack, i.e. the last pass outlet camber height of the slab in the i-1-th rack; p1~p 17 is the first pass slab camber head control coefficient;

[0018] The values of p1~p 17 are obtained by fitting formula (1) using the first pass process parameters of a plurality of slabs in a historical rolling process, and the values of p1~p 17 are substituted into formula (1) to obtain the first pass slab camber height calculation model.

[0019] Further, the first pass process parameters of the same-furnace slab on the same furnace comprise: the first pass reduction rate of the same-furnace slab on the same furnace, the first pass ski coefficient of the same-furnace slab on the same furnace, the first pass outlet camber height of the same-furnace slab on the same furnace, and the first pass pre-rolling camber height of the same-furnace slab on the same furnace.

[0020] Further, the calculation formula of the first pass camber height calculation value of the same-furnace slab on the same furnace is:

[0021]

[0022] Wherein, i is the rack number, and its value is 2; is the first pass outlet camber height calculation value of the same-furnace slab on the same furnace in the i-th rack; p1~p 17 is the first pass slab camber head control coefficient; is the first pass reduction rate of the same-furnace slab on the same furnace in the i-th rack; is the first pass ski coefficient of the same-furnace slab on the same furnace in the i-th rack; the first-pass outlet warping height of the slab in the same furnace on the i-th stand; the first-pass outlet warping height of the slab in the same furnace on the i-th stand;

[0023] Further, the first-pass process parameter of the current slab comprises a first-pass reduction rate of the current slab and a first-pass pre-rolling warping height of the current slab.

[0024] Further, the first-pass snowshoe coefficient of the current slab is calculated based on the first-pass process parameter of the current slab, the first-pass process parameter of the slab in the same furnace on the same stand and the first-pass warping height calculation value of the slab in the same furnace on the same stand, comprising:

[0025] The following function is constructed:

[0026]

[0027] wherein i is the stand number, and i=2; the first-pass outlet warping height calculation value of the current slab on the i-th stand; x i the discrete value of the snowshoe coefficient selected in the settable interval on the first pass of the i-th stand, which is an integer and ranges from -10 to 10; p1-p 17 the first-pass slab warping and buckling head control coefficient; and a is a preset coefficient, which ranges from 0 to 1; the first-pass outlet warping height of the slab in the same furnace on the i-th stand; the first-pass outlet warping height calculation value of the slab in the same furnace on the i-th stand; the first-pass reduction rate of the current slab on the i-th stand; the first-pass pre-rolling warping height of the current slab on the i-th stand, i.e. the first-pass outlet warping height of the current slab on the i-1-th stand

[0028] the optimal solution of x i is obtained based on formula (3) as the first-pass snowshoe coefficient of the current slab on the i-th stand.

[0029] Further, the first-pass snowshoe coefficient of the current slab is calculated based on the first-pass process parameter of the current slab, the first-pass process parameter of the slab in the same furnace on the same stand and the first-pass warping height calculation value of the slab in the same furnace on the same stand, comprising:

[0030] The first-pass snowshoe coefficient of the current slab on the i-th stand is sent to the rolling basic automatic control system, and the system calculates the automatic control strategy of the warping and buckling head to realize the automatic control of the first-pass slab warping and buckling head between stands.

[0031] In still another aspect, the present application also provides an electronic device, comprising a processor and a memory; wherein the memory stores at least one instruction, which is loaded and executed by the processor to implement the above method.

[0032] In still another aspect, the present application also provides a computer readable storage medium, which stores at least one instruction, which is loaded and executed by a processor to implement the above method.

[0033] The technical scheme provided by the present application has at least the following beneficial effects:

[0034] The present application takes into account that the pre-rolling slab warping height has a certain influence on the outlet slab warping, and combines the pre-rolling warping with the traditional ski coefficient control method to form a first pass warping control strategy between stands, and calculates the ski coefficient of the first pass slab between stands through the reduction rate, the ski coefficient and the pre-rolling warping height, which has a faster calculation speed and can more accurately and efficiently realize the warping control of the first pass slab between stands. BRIEF DESCRIPTION OF DRAWINGS

[0035] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiment description. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0036] Figure 1 is a flow chart of the first pass slab warping control method between stands provided by the present application;

[0037] Figure 2 is a system block diagram of the electronic device provided by the present application. DETAILED DESCRIPTION

[0038] In order to make the objects, technical schemes and advantages of the present application clearer, the following will further describe the embodiments of the present application in combination with the drawings.

[0039] First of all, it should be noted that in the embodiments of the present application, the words such as "exemplarily", "for example" and the like are used to represent as an example, illustration or explanation. Any embodiment or design scheme described as "exemplary" in the present application should not be interpreted as more preferred or more advantageous than other embodiments or design schemes. Rather, the word "exemplarily" is intended to present the concept in a specific way. In addition, in the embodiments of the present application, the meaning expressed by "and / or" can be both, or can be one of the two.

[0040] First embodiment

[0041] Considering that the pre-rolling slab warping height has certain influence on the outlet slab warping, the embodiment combines the pre-rolling warping with the traditional snowshoe coefficient control method to form the first pass warping and buckling head control strategy between the stands, and provides a slab first pass warping and buckling head control method. The method can be realized by an electronic device, which can be a terminal or a server. The execution flow of the method is as shown in Figure 1 The method comprises the following steps:

[0042] S1, calculating the first pass slab warping and buckling head control coefficient to obtain a slab first pass warping height calculation model;

[0043] Specifically, in the embodiment, the implementation process of S1 is as follows:

[0044] S11, obtaining the first pass process parameters of the previous N slabs in the historical rolling process; wherein, N is in the range of 2000 to 5000; the first pass process parameters of each slab include the first pass reduction rate of the slab, the first pass snowshoe coefficient of the slab, the first pass outlet warping height of the slab, and the first pass pre-rolling warping height of the slab;

[0045] S12, constructing the slab first pass warping height calculation model as follows:

[0046]

[0047] Wherein, i is the stand number, and its value is 2; Wh i is the first pass outlet warping height of the slab at the i-th stand, and the unit is mm; ε i is the first pass reduction rate of the slab obtained on site at the i-th stand; SKI i is the first pass snowshoe coefficient of the slab at the i-th stand; Pre_Wh i is the first pass pre-rolling warping height of the slab obtained on site at the i-th stand, i.e. the last pass outlet warping height of the slab at the i-1-th stand, and the unit is mm; p1-p 17 is the first pass slab warping and buckling head control coefficient;

[0048] S13, fitting formula (1) by using the first pass process parameters of the N slabs in the historical rolling process obtained in S11, so as to obtain the values of p1-p 17 , and substituting the obtained values of p1-p 17 into formula (1), so as to obtain the slab first pass warping height calculation model.

[0049] S2, obtaining the first pass process parameters of the same furnace upper slab corresponding to the current slab;

[0050] Specifically, in the embodiment, the first-pass process parameters of the slab on the same furnace include: the first-pass reduction rate of the slab on the same furnace, the first-pass sled coefficient of the slab on the same furnace, the first-pass outlet warping height of the slab on the same furnace, and the pre-rolling warping height of the slab on the same furnace.

[0051] S3, based on the first-pass process parameters of the slab on the same furnace, the first-pass warping height calculation model of the slab is used to calculate the first-pass warping height calculation value of the slab on the same furnace;

[0052] Specifically, in the embodiment, the calculation formula of the first-pass warping height calculation value of the slab on the same furnace is as follows:

[0053]

[0054] Wherein, i is the rack number, and the value is 2; is the first-pass outlet warping height calculation value of the slab on the same furnace at the i-th rack; p1-p 17 is the first-pass slab warping buckle head control coefficient; is the first-pass reduction rate of the slab on the same furnace at the i-th rack; is the first-pass sled coefficient of the slab on the same furnace at the i-th rack obtained on site; is the first-pass outlet warping height of the slab on the same furnace at the i-th rack obtained on site, with the unit of mm; is the pre-rolling warping height of the slab on the same furnace at the i-th rack obtained on site, that is, the outlet warping height of the slab on the same furnace at the i-1-th rack The unit is mm.

[0055] S4, the first-pass process parameters of the current slab are obtained;

[0056] Specifically, in the embodiment, the first-pass process parameters of the current slab include: the first-pass reduction rate of the current slab and the pre-rolling warping height of the current slab.

[0057] S5, based on the first-pass process parameters of the current slab, the first-pass process parameters of the slab on the same furnace and the first-pass warping height calculation value of the slab on the same furnace, the first-pass sled coefficient of the current slab is calculated;

[0058] Specifically, in the embodiment, the implementation process of S5 is as follows:

[0059] S51, the following function is constructed:

[0060]

[0061] Wherein, i is the rack number, and the value is 2; is the calculated value of the current slab at the exit camber height of the first pass of the i-th stand; x i is the discrete value of all the ski coefficients in the settable interval at the first pass of the i-th stand, the value is an integer, and the value range is -10 to 10; p1-p 17 is the first pass slab camber head control coefficient; a is a preset coefficient, and the value range is 0 to 1; is the slab on the same furnace above the block at the exit camber height of the first pass of the i-th stand; is the calculated value of the current slab at the exit camber height of the first pass of the i-th stand; is the current slab at the i-th stand first pass reduction rate; is the current slab at the i-th stand first pass pre-rolling camber height, that is, the current slab at the i-1-th stand last pass exit camber height

[0062] S52, the optimal solution of formula (3) is obtained, that is, the first pass ski coefficient of the current slab of the i-th stand: i is the first pass ski coefficient of the current slab of the i-th stand. is the first pass ski coefficient of the current slab of the i-th stand. is the first pass ski coefficient of the current slab of the i-th stand.

[0063] S6, based on the first pass ski coefficient of the current slab, the first pass slab camber head automatic control between stands is realized.

[0064] Specifically, in the embodiment, the implementation process of the above S6 is as follows:

[0065] the first pass ski coefficient of the i-th stand is issued to the rolling basic automatic control system, and the system calculates the camber head automatic control strategy to realize the automatic control of the first pass slab camber head between stands.

[0066] Moreover, it needs to be explained that when the control method is applied, S1 is first executed to calculate the first pass slab camber head control coefficient; thereafter, the first pass slab camber head control coefficient is kept unchanged, and for each slab, only S2-S6 need to be executed to calculate the corresponding first pass ski coefficient for the first pass camber head control.

[0067] Next, taking the hot continuous rolling rough rolling production of a factory as an example, the first pass slab camber head control method between stands provided by the present application is used for camber head control. The specific control process is as follows:

[0068] Step 1, the first pass slab camber head control coefficient is calculated to obtain a slab first pass camber height calculation model;

[0069] Specifically, in the embodiment, the implementation process of the above step 1 is as follows:

[0070] Step 11, obtain the first pass process parameters of the first 2000 slabs, and the parameters of each slab include:

[0071] the first pass reduction ratio of the slab i ;

[0072] the first pass ski coefficient of the slab i ;

[0073] the first pass exit camber height of the slab i ;

[0074] the pre-pass camber height of the first pass of the slab i ;

[0075] wherein i is the rack number, and the value is 2; ε i is the first pass reduction ratio of the slab obtained on site; SKI i is the first pass ski coefficient of the slab in the i-th rack; Wh i is the first pass exit camber height of the slab in the i-th rack, and the unit is mm; Pre_Wh i is the pre-pass camber height of the first pass of the slab in the i-th rack, that is, the exit camber height of the last pass of the slab in the i-1-th rack, and the unit is mm.

[0076] Step 12, construct the following function:

[0077]

[0078] wherein p1 to p 17 are coefficients.

[0079] Step 13, use the first pass process parameters of the first 2000 slabs to fit the formula in step 12 to obtain the values of the coefficients p1 to p 17 . In this embodiment, p1 = -309.320593408107, p2 = 633.843197716423, p3 = 12.6601746904951, p4 = -10.8238105700621, p5 = 473.11810275713, p6 = 7.84598580604104, p7 = 9.24043315053756, p8 = -26.6985825515079, p9 = 192.973349135553, p 10 = 79.9510230358937, p 11 = -1009.1678057171, p 12 = 12.4472890784683, p 13 = -9.58714096760504, p14 = 7.7954577459679, p 15 = 8.62386053221719, p 16 = 165.291951714586, p 17 = -796.060368160032.

[0080] Step 2, obtaining the first pass process parameters of the same furnace slab on the slab;

[0081] Specifically, in the embodiment, the implementation process of the above step 2 is as follows:

[0082] Step 21, obtaining the first pass reduction rate of the same furnace slab on the slab

[0083] Step 22, obtaining the first pass ski coefficient of the same furnace slab on the slab

[0084] Step 23, obtaining the first pass outlet warping height of the same furnace slab on the slab

[0085] Step 24, obtaining the first pass pre-rolling warping height of the same furnace slab on the slab

[0086] Wherein, i is the rack number, the value is 2; is the first pass reduction rate of the same furnace slab on the slab at the i rack; is the first pass ski coefficient of the same furnace slab on the slab obtained on site at the i rack; is the first pass outlet warping height of the same furnace slab on the slab obtained on site at the i rack; is the first pass pre-rolling warping height of the same furnace slab on the slab obtained on site at the i rack, that is, the first pass outlet warping height of the same furnace slab on the slab at the i-1 rack In this example, 20, -3, 61.83, 75.05 respectively.

[0087] Step 3, based on the first pass process parameters of the same furnace slab on the slab, using the slab first pass warping height calculation model, the first pass warping height calculation value of the same furnace slab on the slab is calculated;

[0088] Specifically, in the embodiment, the calculation formula of the first pass warping height calculation value of the same furnace slab on the slab is:

[0089]

[0090] Wherein, i is the rack number, the value is 2; is the calculated value of the exit camber height of the slab in the first pass of the i-th stand, and p1 to p 17 is the calculated value of the exit camber height of the slab in the first pass of the i-th stand, and p1 to p is 75.94.

[0091] Step 4, obtaining the first-pass process parameters of the current slab;

[0092] Specifically, in the present embodiment, the above-mentioned step 4 is implemented as follows:

[0093] Step 41, obtaining the first-pass reduction rate of the slab

[0094] Step 42, obtaining the pre-rolling camber height of the slab in the first pass

[0095] wherein i is the stand number, and the value is 2; is the first-pass reduction rate of the slab in the i-th stand; is the pre-rolling camber height of the slab in the i-th stand, i.e., the exit camber height of the slab in the last pass of the i-1-th stand In the present example, are 20 and 83.52, respectively.

[0096] Step 5, based on the first-pass process parameters of the current slab, combining the first-pass process parameters of the slab in the same furnace and the calculated value of the first-pass camber height of the slab in the same furnace, calculating the first-pass ski coefficient of the current slab;

[0097] Specifically, in the present embodiment, the above-mentioned step 5 is implemented as follows:

[0098] Step 51, constructing the following function:

[0099]

[0100] wherein i is the stand number, and the value is 2; is the calculated value of the exit camber height of the slab in the first pass of the i-th stand, and x i is the discrete value of all ski coefficients in the settable interval at the first pass of the i-th stand, and is an integer, with the value range of -10 to 10; p1 to p 17 is the coefficient; and a is the coefficient, with the value range of 0 to 1. is the measured value of the exit camber height of the slab in the same furnace in the first pass of the i-th stand; is the calculated value of the exit camber height of the slab in the same furnace in the first pass of the i-th stand. In the present example, x i is set to be the discrete integer -10 to 10, a, The values ​​are 0.5, 61.83, and 75.05, respectively.

[0101] Step 52, calculate parameter x i The optimal solution is the first sled coefficient of the i-th frame for this slab:

[0102]

[0103] in, This is the first-pass sled coefficient for the i-th frame of this slab. Specifically, in this embodiment, the calculated coefficient is... The value is 3.

[0104] Step 6: Based on the first-pass sled coefficient of the current slab, realize automatic control of the first-pass slab tilting head between stands;

[0105] Specifically, in this embodiment, step 6 is implemented as follows:

[0106] The coefficient of the first sled of the i-th frame The data is sent to the rolling mill automation control system, which calculates and derives an automatic control strategy for the warping head, thereby achieving automatic control of the warping head of the first slab between stands.

[0107] In summary, this embodiment provides a method for controlling the warping of slabs in the first pass between stands. This method can automatically control the warping of slabs in the first pass between stands, and can automatically set the sled coefficient by using the pre-rolling warping value and reduction rate, thereby improving the control effect of the warping of slabs in the first pass between stands.

[0108] Second Embodiment

[0109] This embodiment provides an electronic device, such as... Figure 2 As shown, the electronic device includes a processor and a memory; wherein the processor and the memory can be connected via a communication bus; the memory stores at least one instruction, which is loaded and executed by the processor to implement the method of the first embodiment described above. Furthermore, the electronic device may also include a transceiver, the processor and the transceiver can be connected via a communication bus, and the transceiver is used to communicate with other devices.

[0110] Below, in conjunction with Figure 2 A detailed introduction to each component of this electronic device is provided below:

[0111] The processor is the control center of the electronic device. The electronic device can include multiple processors. Each of the processors can be a single-CPU or a multi-CPU. The processor can be one processor or a collective term of multiple processing elements. For example, the processor can be one or more central processing units (CPUs), other general purpose processors, application specific integrated circuits (ASICs), or one or more integrated circuits configured to implement one or more embodiments of the present application, such as one or more digital signal processors (DSPs), or one or more field programmable gate arrays (FPGAs), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, or the like. The general purpose processor can be a microprocessor or any conventional processor, or the like. The processor can perform various functions of the electronic device by running or executing software programs stored in the memory and calling data stored in the memory.

[0112] In a specific implementation, as an embodiment, the processor can include one or more CPUs, such as CPU0 and CPU1 shown in FIG. 1, of course, this is only an exemplary description. Figure 2

[0113] The memory is used to store software programs for implementing the solution of the present application, and is controlled by the processor to perform the implementation. The specific implementation can refer to the above-mentioned method embodiments, which will not be described here.

[0114] ​Optionally, the memory may be a read-only memory (ROM) or other type of static storage device capable of storing static information and instructions, random access memory (RAM) or other type of dynamic storage device capable of storing information and instructions, or electrically erasable programmable read-only memory (EEPROM), compact disc read-only memory (CD-ROM) or other optical disc storage, optical disc storage (including compressed optical discs, laser discs, optical discs, digital universal optical discs, Blu-ray discs, etc.), magnetic disk storage media or other magnetic storage devices, or any other medium capable of carrying or storing desired program code in the form of instructions or data structures and accessible by a computer, but not limited thereto. The memory may be integrated with the processor or may exist independently, and may be accessed through the interface circuit of the electronic device (…). Figure 2 (Not shown in the image) is coupled to the processor; however, this embodiment of the invention does not impose specific limitations on this.

[0115] The transceiver may include a receiver and a transmitter. Figure 2 (Not shown separately). The receiver is used to implement the receiving function, and the transmitter is used to implement the transmitting function. The transceiver can be integrated with the processor or exist independently, and is connected through the interface circuit of the electronic device (…). Figure 2 (Not shown in the image) is coupled to the processor, and this embodiment of the invention does not specifically limit this.

[0116] In addition, it should be noted that, Figure 2 The structure of the electronic device shown is not intended to limit the device. Actual devices may include more or fewer components than shown, or combine certain components, or have different component arrangements. Furthermore, the technical effects achieved by this electronic device when performing the method of the first embodiment described above can be referenced to the technical effects described in the first embodiment; therefore, they will not be repeated here.

[0117] Third Embodiment

[0118] This embodiment provides a computer-readable storage medium storing at least one instruction, which is loaded and executed by a processor to implement the method of the first embodiment described above. The computer-readable storage medium may be a ROM, random access memory, CD-ROM, magnetic tape, floppy disk, or optical data storage device, etc. The instruction stored therein can be loaded and executed by a processor in a terminal.

[0119] Moreover, it should be noted that the present application can be provided as a method, an apparatus, or a computer program product. Therefore, the embodiments of the present application can take the form of an entirely or partially hardware embodiment, an entirely or partially software embodiment, or an embodiment combining software and hardware aspects. Furthermore, when implemented in software, the embodiments of the present application can take the form of a computer program product on one or more computer-usable storage media (including, but not limited to, a computer diskette, an optical storage medium, a magnetic storage medium, and a semiconductor memory device). The computer program product includes one or more computer instructions that when loaded and executed by a computer, cause the computer to carry out the processes or functions described in the embodiments of the present application. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable apparatus. The computer instructions can be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another computer-readable storage medium, such as from a website, a computer, a server, or a data center to another website, computer, server, or data center through a wired (for example, infrared, wireless, microwave, or the like) manner. The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device, such as a server, data center, or the like, including one or more collections of available media. The available media can be a magnetic medium (for example, a floppy disk, a hard disk, a magnetic tape), an optical medium (for example, a DVD), or a semiconductor medium. The semiconductor medium can be a solid-state disk.

[0120] The embodiments of the present application are described with reference to the flowcharts and / or block diagrams of the methods, terminal devices (systems), and computer program products according to the embodiments of the present application. It should be understood that each flow and / or block in the flowcharts and / or block diagrams, and the combination of the flows and / or blocks in the flowcharts and / or block diagrams can be implemented by computer program instructions. These computer program instructions can be provided to a general-purpose computer, an embedded processor, or a processor of another programmable data processing terminal device to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing terminal device generate a device that implements the flow Figure 1 The flow or the plurality of flows and / or blocks Figure 1 The device that implements the functions specified in the flow or the plurality of flows and / or blocks.

[0121] These computer program instructions can also be stored in a computer-readable storage medium that can guide the computer or other programmable data processing terminal device to work in a specific manner, so that the instructions stored in the computer-readable storage medium produce a product including instruction devices that implement the flow Figure 1 The flow or the plurality of flows and / or blocks Figure 1the functions specified in the individual block or blocks. Such computer program instructions can also be loaded into a computer or other programmable data processing devices, so that a series of operational steps are performed on the computer or other programmable devices to generate a computer-implemented process, thus the instructions executed on the computer or other programmable devices provide a process for implementing the functions specified in the flowchart block(s). Figure 1 the functions specified in the individual block or blocks. Such computer program instructions can also be loaded into a computer or other programmable data processing devices, so that a series of operational steps are performed on the computer or other programmable devices to generate a computer-implemented process, thus the instructions executed on the computer or other programmable devices provide a process for implementing the functions specified in the flowchart block(s). Figure 1 the functions specified in the individual block or blocks. Such computer program instructions can also be loaded into a computer or other programmable data processing devices, so that a series of operational steps are performed on the computer or other programmable devices to generate a computer-implemented process, thus the instructions executed on the computer or other programmable devices provide a process for implementing the functions specified in the flowchart block(s).

[0122] It should also be noted that, in the present text, the relational terms such as first and second, and the like, are used solely to distinguish one entity or action from another, without necessarily requiring or implying any actual such relationship or order between such entities or actions. The terms "comprises", "comprising", or any other variations thereof, are intended to cover a non-exclusive inclusion, so that a process, method, article, or terminal device including a list of elements does not necessarily include those elements only, but can include other elements not expressly listed or inherent to such process, method, article, or terminal device. Without more limitations, an element defined by the statement "comprising a" does not exclude the existence of additional identical elements in the process, method, article, or terminal device including the element. In addition, the term "and / or" is merely a descriptive association relationship of associated objects, which means that there can be three relationships, for example, A and / or B, which means that there can be three cases: A exists alone, A and B exist together, and B exists alone, where A and B can be singular or plural. In addition, the character " / " in the present text generally represents an "or" relationship between the associated objects before and after it, but it can also represent an "and / or" relationship, which can be understood in the context before and after it. "One or more" means one or more, and "multiple" means two or more. "At least one of" or similar expressions means any combination of these items, including any combination of single or multiple items. For example, at least one of a, b, or c can mean a, b, c, a-b, a-c, b-c, or a-b-c, where a, b, and c can be single or multiple.

[0123] In addition, it can be understood that in various embodiments of the present application, the size of the sequence number of the above processes does not mean the order of execution, and the execution order of the processes should be determined by their functions and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

[0124] Those skilled in the art can appreciate that the units and algorithm steps of the examples described in combination with the embodiments disclosed herein can be realized in electronic hardware or in a combination of computer software and electronic hardware. Whether the functions are realized in hardware or software depends on the specific application and design constraints of the technical solutions. Those skilled in the art can use different methods to realize the described functions for each specific application, but such implementation should not be considered beyond the scope of the present application.

[0125] In several embodiments provided by the present application, it should be understood that the disclosed devices, apparatuses and methods can be implemented in other ways. For example, the apparatus embodiments described above are merely schematic, for example, the division of functional modules / units is merely a logical function division, and actual implementation can have another division manner, for example, a plurality of units or components can be combined or integrated into another device, or some features can be omitted or not executed. In addition, the coupling or direct coupling or communication connection between the displayed or discussed units can be indirect coupling or communication connection through some interfaces, devices or units, and can be electrical, mechanical or other forms. The units described as separate components can be or can not be physically separated, and the components displayed as units can be or can not be physical units, that is, can be located in one place, or can be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the embodiment. In addition, the functional units in each embodiment of the present application can be integrated in one processing unit, or each unit can be physically present, or two or more units can be integrated in one unit.

[0126] If the method is realized in the form of a software function unit and sold or used as an independent product, it can be stored in a computer readable storage medium. Based on such understanding, the technical solutions of the present application essentially or the part that contributes to the prior art or part of the technical solutions can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including a plurality of instructions to make a computer device (which can be a personal computer, a server, or a network device, etc.) execute all or part of the steps of the method described in the embodiments of the present application. The foregoing storage medium includes a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk, and various media that can store program codes.

[0127] Finally, it should be noted that the above description is only the preferred embodiment of the application, it should be pointed out that although the preferred embodiment of the application has been described, for those skilled in the art, once the basic creative concept of the application is known, several improvements and refinements can be made without departing from the principles of the application, and these improvements and refinements should also be considered as the protection scope of the application. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications falling within the scope of the embodiments of the application.

Claims

1. A method for controlling the warping of the first pass slab between stands, characterized in that, include: Calculate the control coefficient for the first pass of slab warping head to obtain the calculation model for the first pass of slab warping height; Obtain the first pass process parameters of the slab in the same furnace corresponding to the current slab; Based on the first-pass process parameters of the slabs in the same furnace, the first-pass warping height of the slabs in the same furnace is calculated using the first-pass warping height calculation model. Obtain the first process parameters for the current slab; Based on the first pass process parameters of the current slab, combined with the first pass process parameters of the slabs in the same furnace and the calculated value of the first pass warping height of the slabs in the same furnace, the first pass sled coefficient of the current slab is calculated. Based on the first-pass sled coefficient of the current slab, realize automatic control of the first-pass slab tilting head between the stands; The first-pass process parameters for the current slab include: the first-pass reduction rate and the first-pass pre-roll warpage height of the current slab. Based on the first-pass process parameters of the current slab, combined with the first-pass process parameters of the slabs in the same furnace and the calculated first-pass warpage height of the slabs in the same furnace, the first-pass sled coefficient of the current slab is calculated, including: Construct the following function: （1） in, This is the rack number, and its value is 2. For the current slab in the first Calculated value of the exit warp height of the first pass of the rack; In the first The discrete value of the sled coefficient selected within a settable range during the first run of the rack. This value is an integer and its range is from -10 to 10. The control coefficient for the warping of the first pass slab; This is a preset coefficient, and its value ranges from 0 to 1; For the same furnace, the first slab is in the first First and second exit warpage height of the rack; For the same furnace, the first slab is in the first Calculated value of the exit warp height of the first pass of the rack; For the current slab in the first First pass reduction rate of the rack; For the current slab in the first The warpage height before the first pass of the mill stand, i.e., the current slab at the [number]th pass. rack last pass exit warpage height ; Based on equation (1) to obtain The optimal solution is taken as the first solution of the current slab. The coefficient of the first and second skis on the frame; Based on the current first-pass slab skid coefficient, automatic control of the first-pass slab tilting head between stands is achieved, including: The current slab's first The first pass sled coefficient of the stand is sent to the rolling base automation control system. The system calculates the automatic control strategy for the tilting head and realizes the automatic control of the tilting head of the first pass slab between stands.

2. The method for controlling the warping of the first pass slab between frames as described in claim 1, characterized in that, The calculation of the first-pass slab warping control coefficient, in order to construct a calculation model for the first-pass slab warping height, includes: Obtain the first-pass process parameters of multiple slabs during the historical rolling process; among them, the first-pass process parameters of each slab include: the first-pass reduction rate of the slab, the first-pass sled coefficient of the slab, the first-pass exit warpage height of the slab, and the first-pass pre-rolling warpage height of the slab. The following model for calculating the first-pass warpage height of a slab is constructed: （2） in, This is the rack number, and its value is 2. For the slab in the first The first exit warpage height of the rack; The slab obtained on site in the first First pass reduction rate of the rack; For the slab in the first The first ski coefficient of the frame; The slab obtained on site in the first The warpage height of the slab before the first rolling pass, i.e., the height of the slab before the first rolling pass. The final exit warpage height of the rack; The control coefficient for the warping of the first pass slab; Equation (2) was fitted using the first-pass process parameters of multiple slabs from the historical rolling process to obtain the... The value will be obtained. Substituting the value into equation (2), we obtain the calculation model for the first-pass warping height of the slab.

3. The method for controlling the warping of the first pass slab between frames as described in claim 1, characterized in that, The first-pass process parameters of the slab in the same furnace include: the first-pass reduction rate of the slab in the same furnace, the first-pass sled coefficient of the slab in the same furnace, the first-pass exit warpage height of the slab in the same furnace, and the first-pass pre-rolling warpage height of the slab in the same furnace.

4. The method for controlling the warping of the first pass slab between frames as described in claim 3, characterized in that, The formula for calculating the first warpage height of the slab in the same furnace is as follows: （3） in, This is the rack number, and its value is 2. For the same furnace, the first slab is in the first Calculated value of the exit warp height of the first pass of the rack; The control coefficient for the warping of the first pass slab; For the same furnace, the first slab is in the first First pass reduction rate of the rack; For the same furnace, the first slab is in the first The coefficient of the first and second skis on the frame; For the same furnace, the first slab is in the first The warpage height of the first pass before rolling on the stand, i.e., the height of the slab in the same furnace before the first pass. rack last pass exit warpage height .

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