Method and device for processing rolling mill data of cold continuous rolling of medium and high grade electrical steel

Abstract

The embodiment of the application provides a rolling mill data processing method and device for cold continuous rolling of medium-high grade electrical steel, which comprises the following steps: performing data simulation under the same working condition according to a set rolling mill simulation model and a set roll diameter range, determining an optimal roll diameter combination according to the simulation result; determining corresponding initial intermediate roll profile curves and initial working roll profile curves according to the optimal roll diameter combination; coupling and checking the initial intermediate roll profile curves and the initial working roll profile curves, and determining target intermediate roll profile curves and target working roll profile curves; and the application can accurately design a special machine type suitable for cold continuous rolling of medium-high grade electrical steel.

Description

Technical Field

[0001] This application relates to the field of cold rolling equipment, specifically to a mill data processing method and apparatus for cold continuous rolling of medium and high grade electrical steel. Background Technology

[0002] The mill design, process system, and control model are fundamental elements determining the strip shape control performance of cold rolling mills, with mill selection being the primary, fundamental, and long-term determining factor. Among the various quality indicators of cold-rolled strip, strip shape is the only one closely related to mill selection. Therefore, to ensure good strip shape quality in production, the corresponding work must begin with mill selection; the rational selection of the mill becomes the most critical factor determining the quality of strip products.

[0003] A rolling mill design is an integration of the mill base, roll shape, and control system; it is a unified whole of these three elements. Mill design is the foundation for determining the mill's performance (capacity, variety, quality, reliability) and economics (investment and production costs).

[0004] When selecting the mill stand for high-grade electrical steel, which is difficult to roll, the load will be very large when using a conventional 4-high mill, making rolling very difficult or even impossible to obtain the final thickness.

[0005] Single-stand rolling mills and pickling mills offer high output, fast speed, high yield, and good strip surface quality, making them suitable for large-scale production of strip products with few varieties. The breakage rate of cold-rolled medium- and low-grade non-oriented electrical steel is approximately 0.005% (times / t), similar to that of ordinary carbon steel. However, during the cold rolling process of high-grade electrical steel, due to the greater brittleness of the steel sheet, the breakage rate reaches 3% to 8% (times / t), more than 600 times higher than that of medium- and low-grade non-oriented electrical steel. Therefore, at present, the vast majority of medium- and high-grade electrical steel production utilizes single-stand rolling.

[0006] Most electrical steel continuous rolling mills on the market today are five-stand continuous rolling mills. Among them, the UCMW cold continuous rolling mill is equipped with a variety of powerful shape control actuators and adopts advanced flatness control strategies and technologies, forming a complete automatic flatness control system. (See [link to relevant documentation]). Figure 11 The plate shape control methods used in this type of unit include pressing and tilting (S1~S5), bending of the working roll (S1~S5), axial displacement of the intermediate roll (S1~S5), bending of the intermediate roll (S1~S5), axial displacement of the working roll (S1~S5), and fine segmented cooling of the 28 sections of the working roll (S5).

[0007] The UCMW cold continuous rolling mill can achieve high-precision control over the straightness and edge drop of cold-rolled strip. Currently, this type of mill is the mainstream equipment used for rolling thin, hard, narrow, and medium-to-low grade electrical steel with strict requirements for strip shape quality. The UCMW mill is equipped with a hydraulic positive / negative bending mechanism for the work rolls, which is a conventional method for secondary wave adjustment; a positive bending mechanism for the intermediate rolls, which can further correct complex secondary waves (such as M-shaped and W-shaped waves); an axial lateral movement mechanism for the intermediate rolls, which, by adjusting the position of the intermediate rolls, can theoretically make the lateral stiffness of the load-bearing roll gap infinitely large, improving the strip shape profile correction ability and rolling stability; and a single-tapered axial lateral movement mechanism for the work rolls, which can effectively control the strip edge drop, reduce the amount of strip edge shearing, and improve the accuracy of strip lateral thickness difference control.

[0008] The inventors discovered that the current 5-stand continuous rolling UCMW mill is suitable for the production of low and medium grade silicon steel and has achieved good results, but it has not yet realized the continuous rolling production of medium and high grade silicon steel. The existing 5-stand continuous rolling UCMW mill has difficulty in effectively controlling the plate shape quality of medium and high grade silicon steel. Therefore, it is necessary to design a special model for the continuous rolling production of medium and high grade silicon steel. Summary of the Invention

[0009] To address the problems in the prior art, this application provides a mill data processing method and apparatus for cold continuous rolling of medium and high grade electrical steel, which can accurately design a special mill model suitable for cold continuous rolling of medium and high grade electrical steel.

[0010] To solve at least one of the above problems, this application provides the following technical solution:

[0011] In a first aspect, this application provides a mill data processing method for cold continuous rolling of medium and high grade electrical steel, including:

[0012] Based on the set mill simulation model and the set roll diameter range, data simulation is performed under the same working conditions, and the optimal roll diameter combination is determined based on the results of the data simulation.

[0013] The corresponding initial intermediate roll profile curve and initial work roll profile curve are determined based on the optimal roll diameter combination.

[0014] The initial intermediate roll profile curve and the initial work roll profile curve are coupled and verified to determine the target intermediate roll profile curve and the target work roll profile curve.

[0015] Furthermore, the step of performing data simulation under the same operating conditions based on a set mill simulation model and a set roll diameter range, and determining the optimal roll diameter combination based on the results of the data simulation, includes:

[0016] Based on the set mill simulation model and the set roll diameter range, data simulation was carried out under the same working conditions to obtain the corresponding relationships between different roll diameters and crown adjustment range, rolling torque and rolling force, and lateral bending of work rolls.

[0017] Based on the corresponding relationships between different roll diameters and crown adjustment ranges, rolling torque and rolling force, and lateral bending of the work rolls, as well as the set roll shape evaluation index, the optimal roll diameter combination is determined.

[0018] Further, determining the corresponding initial intermediate roll profile curve based on the optimal roll diameter combination includes:

[0019] The length of the intermediate roll taper profile under the current intermediate roll travel is determined based on the maximum stroke, maximum and minimum width of the intermediate roll, the length of the intermediate roll body, and the quantity and specifications of the strip produced.

[0020] The tapered roll profile curve of the middle roll edge is determined based on the preset polynomial coefficients and the roll body coordinates in the polynomial coordinate system.

[0021] The initial intermediate roll profile curve is determined based on the tapered roll profile length and the tapered roll profile curve.

[0022] Further, determining the corresponding initial work roll profile curve based on the optimal roll diameter combination includes:

[0023] Determine the length of the tapered section of the work roll under the current roll travel based on the maximum stroke, maximum and minimum width of the work roll, length of the tapered section of the work roll, and length of the work roll body;

[0024] The tapered roll profile curve of the work roll edge is determined based on the control effect of the work roll shifting on the edge drop and the unevenness of the contact pressure with the intermediate roll.

[0025] The initial working roll profile curve is determined based on the working roll taper length and taper curve.

[0026] Further, the coupling verification of the initial intermediate roll profile curve and the initial work roll profile curve to determine the target intermediate roll profile curve and the target work roll profile curve includes:

[0027] Based on the changes in the secondary and quaternary crown of the strip under the bending force of the unit work roll, and the changes in the secondary and quaternary crown of the strip under the bending force of the unit intermediate roll, the control coupling index of the bending of the work roll and the bending of the intermediate roll is determined.

[0028] The unevenness of the inter-roller contact pressure distribution is determined based on the maximum value and the average value of the inter-roller contact pressure.

[0029] Based on the controlled coupling degree index, the uneven distribution of inter-roll contact pressure, and the preset specific gravity function, the coupling verification target function is determined, and based on the coupling verification target function, the initial intermediate roll profile curve, and the initial work roll profile curve, the corresponding target intermediate roll profile curve and target work roll profile curve are determined.

[0030] Secondly, this application provides a mill data processing device for cold continuous rolling of medium and high grade electrical steel, comprising:

[0031] The roll diameter combination determination module is used to perform data simulation under the same working conditions based on a set mill simulation model and a set roll diameter range, and determine the optimal roll diameter combination based on the results of the data simulation.

[0032] The roll profile curve determination module is used to determine the corresponding initial intermediate roll profile curve and initial work roll profile curve based on the optimal roll diameter combination.

[0033] The coupling verification module is used to perform coupling verification on the initial intermediate roll profile curve and the initial work roll profile curve to determine the target intermediate roll profile curve and the target work roll profile curve.

[0034] Furthermore, the roller diameter combination determination module includes:

[0035] The data simulation unit is used to perform data simulation under the same working conditions based on the set mill simulation model and the set roll diameter range, and to obtain the corresponding relationship between different roll diameters and crown adjustment range, rolling torque and rolling force, and lateral bending of the work roll.

[0036] The combined calculation unit is used to determine the optimal roll diameter combination based on the correspondence between different roll diameters and crown adjustment ranges, rolling torque and rolling force, lateral bending of the work roll, and the set roll shape evaluation index.

[0037] Furthermore, the roller curve determination module includes:

[0038] The intermediate roll tapered roll length determination unit is used to determine the intermediate roll tapered roll length under the current intermediate roll travel based on the maximum stroke, maximum and minimum width of the intermediate roll, the length of the intermediate roll body, and the quantity and specifications of the strip produced;

[0039] The intermediate roll tapered roll profile determination unit is used to determine the tapered roll profile curve of the intermediate roll edge based on the preset polynomial coefficients and the roll body coordinate values ​​in the polynomial coordinate system.

[0040] An initial intermediate roll profile curve determination unit is used to determine the initial intermediate roll profile curve based on the tapered roll profile length and the tapered roll profile curve of the intermediate roll.

[0041] Furthermore, the roller curve determination module includes:

[0042] The work roll taper roll profile length determination unit is used to determine the work roll taper roll profile length under the current roll shifting stroke based on the maximum stroke, maximum and minimum width of the work roll, length of the work roll taper section, and length of the work roll body.

[0043] The work roll taper profile curve determination unit is used to determine the taper profile curve of the work roll edge based on the control effect of the work roll shifting on the edge drop and the non-uniformity of the contact pressure with the intermediate roll.

[0044] The initial work roll profile curve determination unit is used to determine the initial work roll profile curve based on the work roll taper profile length and taper profile curve.

[0045] Furthermore, the coupling verification module includes:

[0046] The control coupling index determination unit is used to determine the control coupling index of the work roll bending and the intermediate roll bending based on the changes in the secondary and quaternary crown of the strip under the action of the unit work roll bending force, and the changes in the secondary and quaternary crown of the strip under the action of the unit intermediate roll bending force.

[0047] The non-uniformity determination unit is used to determine the non-uniformity of the inter-roller contact pressure distribution based on the maximum value and the average value of the inter-roller contact pressure.

[0048] The coupling verification unit is used to determine the coupling verification target function based on the control coupling degree index, the unevenness of the inter-roller contact pressure distribution, and the preset specific gravity function, and to determine the corresponding target intermediate roll shape curve and target work roll shape curve based on the coupling verification target function, the initial intermediate roll shape curve, and the initial work roll shape curve.

[0049] Thirdly, this application provides an electronic device, including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the program to implement the steps of the mill data processing method for cold continuous rolling of medium and high grade electrical steel.

[0050] Fourthly, this application provides a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the steps of the mill data processing method for cold continuous rolling of medium and high grade electrical steel.

[0051] Fifthly, this application provides a computer program product, including a computer program / instructions, which, when executed by a processor, implement the steps of the mill data processing method for cold continuous rolling of medium and high grade electrical steel.

[0052] As can be seen from the above technical solution, this application provides a mill data processing method and apparatus for cold continuous rolling of medium and high grade electrical steel. By performing data simulation under the same working conditions based on a set mill simulation model and a set roll diameter range, the optimal roll diameter combination is determined based on the simulation results. The corresponding initial intermediate roll profile curve and initial work roll profile curve are determined based on the optimal roll diameter combination. The initial intermediate roll profile curve and the initial work roll profile curve are coupled and verified to determine the target intermediate roll profile curve and the target work roll profile curve. This enables the accurate design of a dedicated mill model suitable for cold continuous rolling of medium and high grade electrical steel. Attached Figure Description

[0053] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0054] Figure 1 This is one of the flowcharts illustrating the mill data processing method for cold continuous rolling of medium and high grade electrical steel in the embodiments of this application;

[0055] Figure 2 This is the second flowchart illustrating the mill data processing method for cold continuous rolling of medium and high grade electrical steel in this application embodiment;

[0056] Figure 3 This is the third flowchart illustrating the mill data processing method for cold continuous rolling of medium and high grade electrical steel in this application embodiment;

[0057] Figure 4 This is the fourth flowchart illustrating the mill data processing method for cold continuous rolling of medium and high grade electrical steel in this application embodiment;

[0058] Figure 5 This is the fifth flowchart illustrating the mill data processing method for cold continuous rolling of medium and high grade electrical steel in the embodiments of this application.

[0059] Figure 6 This is one of the structural diagrams of the rolling mill data processing device for cold continuous rolling of medium and high grade electrical steel in the embodiments of this application;

[0060] Figure 7 This is the second structural diagram of the rolling mill data processing device for cold continuous rolling of medium and high grade electrical steel in the embodiments of this application;

[0061] Figure 8 This is the third structural diagram of the rolling mill data processing device for cold continuous rolling of medium and high grade electrical steel in the embodiments of this application;

[0062] Figure 9 This is the fourth structural diagram of the rolling mill data processing device for cold continuous rolling of medium and high grade electrical steel in the embodiments of this application;

[0063] Figure 10 This is the fifth structural diagram of the rolling mill data processing device for cold continuous rolling of medium and high grade electrical steel in the embodiments of this application;

[0064] Figure 11 This is a schematic diagram of the structure of a cold continuous rolling mill in the existing technology;

[0065] Figure 12 This is a schematic diagram of the position of the intermediate roller in the polynomial coordinate system in the embodiments of this application;

[0066] Figure 13 This is a schematic diagram of the intermediate roller profile curve in an embodiment of this application;

[0067] Figure 14 This is a schematic diagram of the working roller profile curve in an embodiment of this application;

[0068] Figure 15 This is a schematic diagram of the structure of the electronic device in the embodiments of this application. Detailed Implementation

[0069] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0070] The acquisition, storage, use, and processing of data in this application all comply with the relevant provisions of national laws and regulations.

[0071] In view of the problems existing in the prior art, this application provides a mill data processing method and apparatus for cold continuous rolling of medium and high grade electrical steel. The method involves performing data simulation under the same working conditions based on a set mill simulation model and a set roll diameter range, determining the optimal roll diameter combination based on the simulation results, determining the corresponding initial intermediate roll profile curve and initial work roll profile curve based on the optimal roll diameter combination, and performing coupling verification on the initial intermediate roll profile curve and the initial work roll profile curve to determine the target intermediate roll profile curve and the target work roll profile curve. This enables the accurate design of a dedicated mill model suitable for cold continuous rolling of medium and high grade electrical steel.

[0072] To accurately design specialized mills suitable for cold continuous rolling of medium and high grade electrical steel, this application provides an embodiment of a mill data processing method for cold continuous rolling of medium and high grade electrical steel. See [link to embodiment]. Figure 1 The mill data processing method for cold continuous rolling of medium and high grade electrical steel specifically includes the following:

[0073] Step S101: Perform data simulation under the same working conditions according to the set mill simulation model and set roll diameter range, and determine the optimal roll diameter combination based on the results of the data simulation;

[0074] It is understandable that the mill design, process system, and control model are fundamental elements determining the strip shape control performance of cold rolling mills, and mill selection is the primary, fundamental, and long-term determining factor. Among the various quality indicators of cold-rolled strip, strip shape is the only one closely related to mill selection. Therefore, to ensure good strip shape quality in production, the corresponding work must begin with mill selection; the rational selection of the mill will become the most critical factor determining the quality of strip products.

[0075] A rolling mill design is an integration of the mill base, roll shape, and control system; it is a unified whole of these three elements. Mill design is the foundation for determining the mill's performance (capacity, variety, quality, reliability) and economics (investment and production costs).

[0076] For high-grade electrical steel and other difficult-to-roll steels, the selection of the mill stand is crucial. Using a conventional 4-high mill would result in a very heavy load, making rolling extremely difficult or even impossible to achieve the desired thickness. Reducing the work roll diameter, which decreases the contact arc length between the rolls and the strip, and thus lowers the rolling force per unit width, is an effective solution. Therefore, a 6-high mill should be selected for cold continuous rolling of high-grade electrical steel. However, the exact range of diameters for the support rolls, intermediate rolls, and work rolls still needs further investigation and determination.

[0077] In addition to the high requirements for flatness control, electrical steel also has high requirements for transverse thickness difference of strip. Therefore, the design of cold rolling mill rolls should be emphasized to ensure that the cold rolling mill meets the high plate quality requirements of electrical steel.

[0078] Finally, regarding the control requirements of the rolling mill, in addition to the essential basic control methods such as roll tilting and roll bending (including work roll bending and intermediate roll bending, and generally symmetrical roll bending), optional control methods include axial displacement of the rolls, which must be used in conjunction with the roll shape.

[0079] Optionally, in this embodiment, a simulation model is first established, initially defining the roll diameter range, obtaining the mechanical properties of medium-to-high grade silicon steel, and abstracting the mechanical and contact models to guide machine design. Simulations are then performed under the same operating conditions using the given roll diameter range to obtain the crown adjustment range, rolling torque and rolling force, and lateral bending of the work rolls. The effects of different roll diameters on these parameters are analyzed. Based on the simulation results, roll shape evaluation indicators are formulated, and the optimal roll diameter combination is selected.

[0080] Specifically, in this embodiment, a simulation model is first established.

[0081] To simplify the finite element simulation model of the rolling mill, basic simplification assumptions were adopted during the model establishment process.

[0082] 1) The roll is simplified into a cylindrical shape, consisting of three parts: the necks at both ends and the roll body in the middle. The model retains the dimensions of the three roll necks and the outline dimensions of the roll body. The intermediate roll retains the stepped portion due to roll slippage.

[0083] 2) The support roll, intermediate roll, and work roll are all solid, homogeneous, and isotropic pure elastic rolls. The rolls are in frictional contact with each other and there is no sliding.

[0084] 3) In actual production, the strip steel is very long, and it is neither necessary nor time-consuming to simulate the entire strip steel. Therefore, only a small section of the strip steel (100mm) is selected. The cross-section of the strip steel is simplified to a rectangle, and issues such as the initial convexity and the thinning rate of the edge thickness are ignored.

[0085] 4) During the simulation, constraints and loads are applied to the coupling points on the end face to simulate the constraint of the roll bearing on the roll's degree of freedom.

[0086] 5) The bending force on the roll acts symmetrically at the center of both ends of the journal, i.e., the coupling point in the model.

[0087] Optionally, this embodiment can use the roll diameter range given in Table 1 to perform simulations under the same working conditions to obtain the crown adjustment range, rolling torque and rolling force, and lateral bending of the work roll. The influence of different roll diameters on the three indicators is analyzed.

[0088] Table 1. Roller Diameter Combinations

[0089]

[0090]

[0091] Simulation analysis and comparison show the following: When the work roll diameter is small, the roll gap crown adjustment range is the largest, meaning the mill has the strongest control over strip shape quality. However, when the roll diameter is small, the work roll side bending is severe, which may lead to serious waviness defects in the strip. Furthermore, ensuring the work roll drive shaft diameter during rolling is relatively difficult, potentially causing accidents. Therefore, the work roll diameter should not be too small. As the work roll diameter increases, when it reaches 300mm, the side bending of the work roll decreases, meaning its impact on strip shape decreases. However, at this point, the design margin for the work roll drive shaft diameter is relatively small. When the work roll diameter is greater than 320mm, the side bending is also relatively small. Simultaneously, as the roll diameter increases, the design margin for the work roll drive shaft diameter also gradually increases. Therefore, a minimum work roll diameter of not less than 320mm is recommended, with an optimal range of 320mm-360mm.

[0092] Step S102: Determine the corresponding initial intermediate roll profile curve and initial work roll profile curve based on the optimal roll diameter combination;

[0093] Optionally, in this embodiment, based on the above roller diameter combination, the intermediate roller shape is designed, the intermediate roller shape curve form is determined, the intermediate roller shape optimization target is determined, and a better intermediate roller shape curve is calculated. Based on the above roller diameter combination, the work roller shape is designed, the work roller shape curve form is determined, the work roller shape optimization target is determined, and a better work roller shape curve is calculated.

[0094] Step S103: Perform coupling verification on the initial intermediate roll profile curve and the initial work roll profile curve to determine the target intermediate roll profile curve and the target work roll profile curve.

[0095] Optionally, in this embodiment, the intermediate roll profile and the working roll profile are considered simultaneously to verify the coupling effect between the two roll profiles and determine the final intermediate roll and working roll profile curves.

[0096] As can be seen from the above description, the mill data processing method for cold continuous rolling of medium and high grade electrical steel provided in this application embodiment can perform data simulation under the same working conditions according to a set mill simulation model and a set roll diameter range, determine the optimal roll diameter combination based on the data simulation results, determine the corresponding initial intermediate roll profile curve and initial work roll profile curve based on the optimal roll diameter combination, and perform coupling verification on the initial intermediate roll profile curve and the initial work roll profile curve to determine the target intermediate roll profile curve and the target work roll profile curve. Thus, it is possible to accurately design a special mill model suitable for cold continuous rolling of medium and high grade electrical steel.

[0097] In one embodiment of the mill data processing method for cold continuous rolling of medium and high grade electrical steel in this application, see [reference needed]. Figure 2It can also specifically include the following:

[0098] Step S201: Based on the set mill simulation model and the set roll diameter range, perform data simulation under the same working conditions to obtain the corresponding relationships between different roll diameters and crown adjustment ranges, rolling torque and rolling force, and lateral bending of the work rolls;

[0099] Step S202: Determine the optimal roll diameter combination based on the corresponding relationship between different roll diameters and crown adjustment ranges, rolling torque and rolling force, lateral bending of the work roll, and the set roll shape evaluation index.

[0100] In one embodiment of the mill data processing method for cold continuous rolling of medium and high grade electrical steel in this application, see [reference needed]. Figure 3 It can also specifically include the following:

[0101] Step S301: Determine the tapered roll length of the intermediate roll under the current roll travel based on the maximum stroke, maximum and minimum width of the intermediate roll, the length of the intermediate roll body, and the quantity and specifications of the strip produced;

[0102] Step S302: Determine the tapered roll profile curve of the middle roll edge based on the preset polynomial coefficients and the roll body coordinate values ​​in the polynomial coordinate system;

[0103] Step S303: Determine the initial intermediate roll profile curve based on the tapered roll profile length and the tapered roll profile curve of the intermediate roll.

[0104] Optionally, in this embodiment, see Figure 12 The tapered roller curve shape of the middle roller edge is expressed by a polynomial. The middle part L1 is a flat roller section, and L2+L3.

[0105] The curve segment is a taper curve, where L2 is the edge drop control segment and L3 is the structural process segment. The curve form is shown below.

[0106] y = a*x^2 + b*x^4 + c*x^6

[0107] Where x is the roll body coordinate, y is the roll profile coordinate, represented by the difference in the roll radius, and a, b, and c are polynomial coefficients.

[0108] Optionally, this application can also determine the length of the tapered section and establish a roller shape library.

[0109] First, it is necessary to define the boundary range of the tapered roll profile design under the current roll travel. The following relationship must be satisfied:

[0110]

[0111] In the above formula, Smw is the maximum stroke of the intermediate roll, Bmax and Bmin are the maximum and minimum widths, respectively, and Lw is the length of the intermediate roll body. Within this width range, the length of the tapered roll shape Le = L2 + L3 is determined based on the statistical results of the quantity and specifications of the produced strip.

[0112] In one embodiment of the mill data processing method for cold continuous rolling of medium and high grade electrical steel in this application, see [reference needed]. Figure 4 It can also specifically include the following:

[0113] Step S401: Determine the tapered section length of the work roll under the current roll shifting stroke based on the maximum stroke, maximum and minimum width of the work roll, length of the tapered section of the work roll, and length of the work roll body;

[0114] Step S402: Determine the tapered roll profile curve of the work roll edge based on the control effect of the work roll shifting on the edge drop and the unevenness of the contact pressure with the intermediate roll;

[0115] Step S403: Determine the initial working roll profile curve based on the tapered roll profile length and tapered roll profile curve of the working roll.

[0116] Optionally, in this embodiment, the shape of one side of the work roll is designed to approximate the contour of the strip edge thinning shape: an arc shape. Design criteria: the optimized local roll profile curve segment and the flat roll segment should have a smooth transition and the roll gap opening should be appropriate according to the deformation of different points on the strip edge, especially reducing the roll gap opening value corresponding to each point in the area slightly farther from the edge.

[0117] a) Determining the length of the tapered section and establishing the roller library

[0118] First, it is necessary to clarify the boundary range of the tapered roll shape design under the current roll shifting stroke. The work roll shape should ensure that it can move as close as possible to the edge of the strip during the roll shifting process. The following relationship needs to be satisfied:

[0119]

[0120] Where Smp is the maximum stroke of the work roll, Bmax and Bmin are the maximum and minimum widths respectively, Lr is the length of the tapered section of the work roll, and Lp is the length of the work roll body.

[0121] b) Design objectives for the work roll shape

[0122] The design of the work roll profile mainly considers the contact pressure with the intermediate roll and the control effect on edge drop.

[0123] P = min(Kedc*ω1 + β2*ω2)

[0124] Where Kedc is the control effect of the work roll shifting on the edge drop, and β2 is the non-uniformity of the contact pressure between the work roll and the intermediate roll.

[0125] The results of the roller design are as follows Figure 13 As shown.

[0126] In one embodiment of the mill data processing method for cold continuous rolling of medium and high grade electrical steel in this application, see [reference needed]. Figure 5 It can also specifically include the following:

[0127] Step S501: Based on the changes in the secondary and quaternary crown of the strip under the bending force of the unit work roll, and the changes in the secondary and quaternary crown of the strip under the bending force of the unit intermediate roll, determine the control coupling index of the bending of the work roll and the bending of the intermediate roll.

[0128] Step S502: Determine the non-uniformity of the inter-roller contact pressure distribution based on the maximum value and the average value of the inter-roller contact pressure.

[0129] Step S503: Determine the coupling verification target function based on the control coupling degree index, the unevenness of the inter-roller contact pressure distribution, and the preset specific gravity function, and determine the corresponding target intermediate roll shape curve and target work roll shape curve based on the coupling verification target function, the initial intermediate roll shape curve, and the initial work roll shape curve.

[0130] Optional, intermediate roll coupling index established:

[0131] An integrated simulation model of the elastic deformation of the roll system and the plastic deformation of the rolled piece is used for offline simulation of the work roll and intermediate roll. The coupling degree index between strip edge drop and flatness is defined, as follows:

[0132]

[0133] Where ΔCW is the change in crown caused by the unit axial displacement of the work roll;

[0134] ΔEDC is the change in edge drop caused by the unidirectional axial displacement of the work roll.

[0135] Kec represents the degree of coupling between the work roll and the side drop and crown. The smaller the value, the lower the coupling degree, which is beneficial for achieving decoupling control of side drop and flatness.

[0136] Similarly, the control coupling degree index for the work roll bending roll and the intermediate roll bending roll is defined, and the formula is as follows:

[0137]

[0138] ΔCW4_BFW represents the change in strip crown four times under the bending force of a unit work roll;

[0139] ΔCW2_BFW represents the change in secondary crown of the strip under the action of the bending force of the unit work roll;

[0140] ΔCW4_BFI represents the change in strip crown under the action of the unit intermediate roll bending force.

[0141] ΔCW2_BFI is the change in secondary crown of the strip under the action of the unit intermediate roll bending force.

[0142] k B A larger value for k indicates a weaker coupling between the work roll bending and the intermediate roll bending, which is more conducive to decoupling the work roll bending and the intermediate roll bending. Additionally, k... B A larger value indicates that by using two bending rollers in combination, a larger range of fourth-order convexity can be achieved while controlling the same size of secondary convexity. The use of two bending rollers in combination provides a larger range of wave shape control.

[0143] c) Establishment of roller contact pressure index

[0144] Roll contact pressure is also an important consideration. A good roll contact pressure distribution has always been a goal. The roll contact pressure distribution can usually be evaluated using the following formula as an indicator:

[0145]

[0146] In the formula, β represents the non-uniformity of the inter-roller contact pressure distribution; Pmax represents the maximum value of the inter-roller contact pressure; and Pavg represents the average value of the inter-roller contact pressure.

[0147] d) Defining the objective function and the optimal roller configuration scheme

[0148] Based on the design requirements of the rolling mill's operational objectives, the optimal configuration scheme for the work rolls and intermediate rolls is determined from the established roll shape library. The objective function is shown below:

[0149] P = min(Kec*ω1 + K) B *ω2+β*ω3)

[0150] Where P is the objective function, and ω1, ω2, ω3 are the weight functions of each index, such that the final roll shape curves of the work roll and intermediate roll are determined under the condition of minimizing the above functions. Figure 14 As shown.

[0151] To enable the accurate design of dedicated mills suitable for cold continuous rolling of medium and high grade electrical steel, this application provides an embodiment of a mill data processing device for cold continuous rolling of medium and high grade electrical steel, which implements all or part of the mill data processing method for such mills. See [link to embodiment]. Figure 6 The data processing device for the cold continuous rolling mill of medium and high grade electrical steel specifically includes the following components:

[0152] The roll diameter combination determination module 10 is used to perform data simulation under the same working conditions based on a set mill simulation model and a set roll diameter range, and to determine the optimal roll diameter combination based on the results of the data simulation.

[0153] The roller profile curve determination module 20 is used to determine the corresponding initial intermediate roller profile curve and initial work roller profile curve based on the optimal roller diameter combination.

[0154] The coupling verification module 30 is used to perform coupling verification on the initial intermediate roll profile curve and the initial work roll profile curve to determine the target intermediate roll profile curve and the target work roll profile curve.

[0155] As can be seen from the above description, the mill data processing device for cold continuous rolling of medium and high grade electrical steel provided in this application embodiment can perform data simulation under the same working conditions according to a set mill simulation model and a set roll diameter range, determine the optimal roll diameter combination based on the results of the data simulation, determine the corresponding initial intermediate roll profile curve and initial work roll profile curve based on the optimal roll diameter combination, and perform coupling verification on the initial intermediate roll profile curve and the initial work roll profile curve to determine the target intermediate roll profile curve and the target work roll profile curve. Thus, it is possible to accurately design a special mill model suitable for cold continuous rolling of medium and high grade electrical steel.

[0156] In one embodiment of the mill data processing device for cold continuous rolling of medium and high grade electrical steel in this application, see [reference needed]. Figure 7 The roller diameter combination determination module 10 includes:

[0157] The data simulation unit 11 is used to perform data simulation under the same working conditions according to the set mill simulation model and the set roll diameter range, and to obtain the corresponding relationship between different roll diameters and crown adjustment range, rolling torque and rolling force, and lateral bending of work rolls.

[0158] The combined calculation unit 12 is used to determine the optimal roll diameter combination based on the correspondence between different roll diameters and crown adjustment ranges, rolling torque and rolling force, lateral bending of the work roll, and the set roll shape evaluation index.

[0159] In one embodiment of the mill data processing device for cold continuous rolling of medium and high grade electrical steel in this application, see [reference needed]. Figure 8 The roller curve determination module 20 includes:

[0160] The intermediate roll tapered roll length determination unit 21 is used to determine the intermediate roll tapered roll length under the current intermediate roll travel based on the maximum stroke, maximum and minimum width of the intermediate roll, the length of the intermediate roll body, and the quantity and specifications of the strip produced.

[0161] The intermediate roll tapered roll profile determination unit 22 is used to determine the tapered roll profile of the intermediate roll edge based on the preset polynomial coefficients and the roll body coordinate values ​​in the polynomial coordinate system.

[0162] The initial intermediate roll profile curve determination unit 23 is used to determine the initial intermediate roll profile curve based on the tapered roll profile length and the tapered roll profile curve of the intermediate roll.

[0163] In one embodiment of the mill data processing device for cold continuous rolling of medium and high grade electrical steel in this application, see [reference needed]. Figure 9 The roller curve determination module 20 includes:

[0164] The working roll tapered roll profile length determination unit 24 is used to determine the working roll tapered roll profile length under the current rolling stroke based on the maximum stroke of the working roll, the maximum and minimum width, the length of the working roll tapered section, and the length of the working roll body.

[0165] The taper profile curve determination unit 25 is used to determine the taper profile curve of the edge of the work roll based on the control effect of the work roll shifting on the edge drop and the unevenness of the contact pressure with the intermediate roll.

[0166] The initial work roll profile curve determination unit 26 is used to determine the initial work roll profile curve based on the work roll taper profile length and taper profile curve.

[0167] In one embodiment of the mill data processing device for cold continuous rolling of medium and high grade electrical steel in this application, see [reference needed]. Figure 10 The coupling verification module 30 includes:

[0168] The control coupling degree index determination unit 31 is used to determine the control coupling degree index of the work roll bending and the intermediate roll bending based on the change in the secondary crown and the change in the fourth crown of the strip under the action of the unit work roll bending force, and the change in the secondary crown and the change in the fourth crown of the strip under the action of the unit intermediate roll bending force.

[0169] The non-uniformity determination unit 32 is used to determine the non-uniformity of the inter-roller contact pressure distribution based on the maximum value and the average value of the inter-roller contact pressure.

[0170] The coupling verification unit 33 is used to determine the coupling verification target function based on the control coupling degree index, the unevenness of the inter-roller contact pressure distribution and the preset specific gravity function, and to determine the corresponding target intermediate roll shape curve and target work roll shape curve based on the coupling verification target function, the initial intermediate roll shape curve and the initial work roll shape curve.

[0171] From a hardware perspective, in order to accurately design a dedicated mill model suitable for cold continuous rolling of medium and high grade electrical steel, this application provides an embodiment of an electronic device for implementing all or part of the mill data processing method for cold continuous rolling of medium and high grade electrical steel. The electronic device specifically includes the following components:

[0172] The system comprises a processor, memory, a communications interface, and a bus; wherein the processor, memory, and communications interface communicate with each other via the bus; the communications interface is used to realize information transmission between the rolling mill data processing device for cold continuous rolling of medium and high grade electrical steel and core business systems, user terminals, and related databases and other related equipment; the logic controller can be a desktop computer, tablet computer, or mobile terminal, etc., and this embodiment is not limited to these. In this embodiment, the logic controller can be implemented with reference to the embodiments of the rolling mill data processing method for cold continuous rolling of medium and high grade electrical steel and the embodiments of the rolling mill data processing device for cold continuous rolling of medium and high grade electrical steel, the contents of which are incorporated herein, and repeated details will not be described again.

[0173] It is understood that the user terminal may include smartphones, tablet computers, network set-top boxes, portable computers, desktop computers, personal digital assistants (PDAs), in-vehicle devices, smart wearable devices, etc. Among these, the smart wearable devices may include smart glasses, smartwatches, smart bracelets, etc.

[0174] In practical applications, some of the data processing methods for cold continuous rolling mills of medium and high grade electrical steel can be executed on the electronic equipment side as described above, or all operations can be completed in the client device. The choice can be made based on the processing capabilities of the client device and the limitations of the user's usage scenario. This application does not impose any limitations on this. If all operations are completed in the client device, the client device may further include a processor.

[0175] The aforementioned client device may have a communication module (i.e., a communication unit) that can communicate with a remote server to achieve data transmission. The server may include a server on the task scheduling center side; in other implementation scenarios, it may also include a server on an intermediate platform, such as a server on a third-party server platform that has a communication link with the task scheduling center server. The server may include a single computer device, a server cluster consisting of multiple servers, or a distributed server structure.

[0176] Figure 15 This is a schematic block diagram illustrating the system configuration of the electronic device 9600 according to an embodiment of this application. Figure 15 As shown, the electronic device 9600 may include a central processing unit 9100 and a memory 9140; the memory 9140 is coupled to the central processing unit 9100. It is worth noting that... Figure 15 This is an example; other types of structures can also be used to supplement or replace this structure to achieve telecommunications functions or other functions.

[0177] In one embodiment, the mill data processing function for cold continuous rolling of medium and high grade electrical steel can be integrated into the central processing unit 9100. The central processing unit 9100 can be configured to perform the following control:

[0178] Step S101: Perform data simulation under the same working conditions according to the set mill simulation model and set roll diameter range, and determine the optimal roll diameter combination based on the results of the data simulation;

[0179] Step S102: Determine the corresponding initial intermediate roll profile curve and initial work roll profile curve based on the optimal roll diameter combination;

[0180] Step S103: Perform coupling verification on the initial intermediate roll profile curve and the initial work roll profile curve to determine the target intermediate roll profile curve and the target work roll profile curve.

[0181] As can be seen from the above description, the electronic equipment provided in this application embodiment performs data simulation under the same working conditions based on a set mill simulation model and a set roll diameter range, determines the optimal roll diameter combination based on the results of the data simulation, determines the corresponding initial intermediate roll profile curve and initial work roll profile curve based on the optimal roll diameter combination, and performs coupling verification on the initial intermediate roll profile curve and the initial work roll profile curve to determine the target intermediate roll profile curve and the target work roll profile curve. Thus, it is possible to accurately design a special mill model suitable for cold continuous rolling of medium and high grade electrical steel.

[0182] In another embodiment, the mill data processing device for cold continuous rolling of medium and high grade electrical steel can be configured separately from the central processing unit 9100. For example, the mill data processing device for cold continuous rolling of medium and high grade electrical steel can be configured as a chip connected to the central processing unit 9100, and the mill data processing method function for cold continuous rolling of medium and high grade electrical steel can be realized through the control of the central processing unit.

[0183] like Figure 15 As shown, the electronic device 9600 may further include: a communication module 9110, an input unit 9120, an audio processor 9130, a display 9160, and a power supply 9170. It is worth noting that the electronic device 9600 does not necessarily need to include these components. Figure 15 All components shown; in addition, the electronic device 9600 may also include Figure 15 For components not shown, please refer to existing technologies.

[0184] like Figure 15 As shown, the central processing unit 9100, sometimes also referred to as a controller or operating control, may include a microprocessor or other processor device and / or logic device, which receives inputs and controls the operation of various components of the electronic device 9600.

[0185] The memory 9140 may be, for example, one or more of a cache, flash memory, hard drive, removable media, volatile memory, non-volatile memory, or other suitable devices. It may store the aforementioned failure-related information, and also store a program for executing that information. The central processing unit 9100 may execute the program stored in the memory 9140 to perform information storage or processing, etc.

[0186] Input unit 9120 provides input to central processing unit 9100. Input unit 9120 may be, for example, a keypad or touch input device. Power supply 9170 provides power to electronic device 9600. Display 9160 displays images and text. Display may be, for example, an LCD display, but is not limited thereto.

[0187] The memory 9140 can be a solid-state memory, such as a read-only memory (ROM), random access memory (RAM), a SIM card, etc. It can also be a memory that retains information even when power is off, can be selectively erased, and contains more data; examples of this type of memory are sometimes referred to as EPROMs. The memory 9140 can also be some other type of device. The memory 9140 includes a buffer memory 9141 (sometimes referred to as a buffer). The memory 9140 may include an application / function storage unit 9142 for storing application programs and function programs or processes for executing the operation of the electronic device 9600 via the central processing unit 9100.

[0188] The memory 9140 may also include a data storage unit 9143 for storing data, such as contacts, digital data, pictures, sounds, and / or any other data used by the electronic device. The driver storage unit 9144 of the memory 9140 may include various drivers for the electronic device's communication functions and / or for performing other functions of the electronic device (such as messaging applications, address book applications, etc.).

[0189] The communication module 9110 is a transmitter / receiver 9110 that transmits and receives signals via the antenna 9111. The communication module (transmitter / receiver) 9110 is coupled to the central processing unit 9100 to provide input signals and receive output signals, which can be the same as in a conventional mobile communication terminal.

[0190] Based on different communication technologies, multiple communication modules 9110 can be configured in the same electronic device, such as cellular network modules, Bluetooth modules, and / or wireless LAN modules. The communication module (transmitter / receiver) 9110 is also coupled to a speaker 9131 and a microphone 9132 via an audio processor 9130 to provide audio output via the speaker 9131 and receive audio input from the microphone 9132, thereby realizing typical telecommunications functions. The audio processor 9130 may include any suitable buffer, decoder, amplifier, etc. Additionally, the audio processor 9130 is coupled to a central processing unit 9100, enabling on-device recording via the microphone 9132 and on-device playback of stored sound via the speaker 9131.

[0191] Embodiments of this application also provide a computer-readable storage medium capable of implementing all steps of the mill data processing method for cold continuous rolling of medium and high grade electrical steel, where the execution subject is a server or client, as described in the above embodiments. The computer-readable storage medium stores a computer program that, when executed by a processor, implements all steps of the mill data processing method for cold continuous rolling of medium and high grade electrical steel, where the execution subject is a server or client, as described in the above embodiments. For example, when the processor executes the computer program, it implements the following steps:

[0192] Step S101: Perform data simulation under the same working conditions according to the set mill simulation model and set roll diameter range, and determine the optimal roll diameter combination based on the results of the data simulation;

[0193] Step S102: Determine the corresponding initial intermediate roll profile curve and initial work roll profile curve based on the optimal roll diameter combination;

[0194] Step S103: Perform coupling verification on the initial intermediate roll profile curve and the initial work roll profile curve to determine the target intermediate roll profile curve and the target work roll profile curve.

[0195] As can be seen from the above description, the computer-readable storage medium provided in this application embodiment performs data simulation under the same working conditions based on a set mill simulation model and a set roll diameter range, determines the optimal roll diameter combination based on the results of the data simulation, determines the corresponding initial intermediate roll profile curve and initial work roll profile curve based on the optimal roll diameter combination, and performs coupling verification on the initial intermediate roll profile curve and the initial work roll profile curve to determine the target intermediate roll profile curve and the target work roll profile curve. This enables the accurate design of a special mill model suitable for cold continuous rolling of medium and high grade electrical steel.

[0196] Embodiments of this application also provide a computer program product capable of implementing all steps in the mill data processing method for cold continuous rolling of medium and high grade electrical steel, where the execution subject is a server or client, as described in the above embodiments. When executed by a processor, this computer program / instruction implements the steps of the mill data processing method for cold continuous rolling of medium and high grade electrical steel. For example, the computer program / instruction implements the following steps:

[0197] Step S101: Perform data simulation under the same working conditions according to the set mill simulation model and set roll diameter range, and determine the optimal roll diameter combination based on the results of the data simulation;

[0198] Step S102: Determine the corresponding initial intermediate roll profile curve and initial work roll profile curve based on the optimal roll diameter combination;

[0199] Step S103: Perform coupling verification on the initial intermediate roll profile curve and the initial work roll profile curve to determine the target intermediate roll profile curve and the target work roll profile curve.

[0200] As can be seen from the above description, the computer program product provided in this application embodiment performs data simulation under the same working conditions based on a set mill simulation model and a set roll diameter range, determines the optimal roll diameter combination based on the results of the data simulation, determines the corresponding initial intermediate roll profile curve and initial work roll profile curve based on the optimal roll diameter combination, and performs coupling verification on the initial intermediate roll profile curve and the initial work roll profile curve to determine the target intermediate roll profile curve and the target work roll profile curve. Thus, it is possible to accurately design a special mill model suitable for cold continuous rolling of medium and high grade electrical steel.

[0201] Those skilled in the art will understand that embodiments of the present invention can be provided as methods, apparatus, or computer program products. Therefore, the present invention can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present invention can take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0202] This invention is described with reference to flowchart illustrations and / or block diagrams of methods, apparatus (devices), and computer program products according to embodiments of the invention. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, generate instructions for implementing the flowchart illustrations and / or block diagrams. Figure 1 One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.

[0203] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing device to function in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means, which are implemented in a process Figure 1 One or more processes and / or boxes Figure 1 The function specified in one or more boxes.

[0204] These computer program instructions may also be loaded onto a computer or other programmable data processing equipment to cause a series of operational steps to be performed on the computer or other programmable equipment to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable equipment for implementing the process. Figure 1 One or more processes and / or boxes Figure 1 The steps of the function specified in one or more boxes.

[0205] Specific embodiments have been used to illustrate the principles and implementation methods of this invention. The descriptions of the embodiments above are only for the purpose of helping to understand the method and core ideas of this invention. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of this invention. Therefore, the content of this specification should not be construed as a limitation of this invention.

Claims

1. A method for processing mill data in the cold continuous rolling of medium and high grade electrical steel, characterized in that, The method includes: Based on the set mill simulation model and the set roll diameter range, data simulation is performed under the same working conditions, and the optimal roll diameter combination is determined based on the results of the data simulation. The corresponding initial intermediate roll profile curve and initial work roll profile curve are determined based on the optimal roll diameter combination. The initial intermediate roll profile curve and the initial work roll profile curve are coupled and verified to determine the target intermediate roll profile curve and the target work roll profile curve; The coupling verification of the initial intermediate roll profile curve and the initial work roll profile curve, and the determination of the target intermediate roll profile curve and the target work roll profile curve, include: Based on the changes in the secondary and quaternary crown of the strip under the bending force of the unit work roll, and the changes in the secondary and quaternary crown of the strip under the bending force of the unit intermediate roll, the control coupling index of the bending of the work roll and the bending of the intermediate roll is determined. The unevenness of the inter-roller contact pressure distribution is determined based on the maximum value and the average value of the inter-roller contact pressure. Based on the controlled coupling degree index, the uneven distribution of inter-roll contact pressure, and the preset specific gravity function, the coupling verification target function is determined, and based on the coupling verification target function, the initial intermediate roll profile curve, and the initial work roll profile curve, the corresponding target intermediate roll profile curve and target work roll profile curve are determined.

2. The mill data processing method for cold continuous rolling of medium and high grade electrical steel according to claim 1, characterized in that, The step of performing data simulation under the same operating conditions based on a set mill simulation model and a set roll diameter range, and determining the optimal roll diameter combination based on the simulation results, includes: Based on the set mill simulation model and the set roll diameter range, data simulation was carried out under the same working conditions to obtain the corresponding relationships between different roll diameters and crown adjustment range, rolling torque and rolling force, and lateral bending of work rolls. Based on the corresponding relationships between different roll diameters and crown adjustment ranges, rolling torque and rolling force, and lateral bending of the work rolls, as well as the set roll shape evaluation index, the optimal roll diameter combination is determined.

3. The mill data processing method for cold continuous rolling of medium and high grade electrical steel according to claim 1, characterized in that, The step of determining the corresponding initial intermediate roll profile curve based on the optimal roll diameter combination includes: The length of the intermediate roll taper profile under the current intermediate roll travel is determined based on the maximum stroke, maximum and minimum width of the intermediate roll, the length of the intermediate roll body, and the quantity and specifications of the strip produced. The tapered roll profile curve of the middle roll edge is determined based on the preset polynomial coefficients and the roll body coordinates in the polynomial coordinate system. The initial intermediate roll profile curve is determined based on the tapered roll profile length and the tapered roll profile curve.

4. The mill data processing method for cold continuous rolling of medium and high grade electrical steel according to claim 1, characterized in that, The step of determining the corresponding initial work roll profile curve based on the optimal roll diameter combination includes: Determine the length of the tapered section of the work roll under the current roll travel based on the maximum stroke, maximum and minimum width of the work roll, length of the tapered section of the work roll, and length of the work roll body; The tapered roll profile curve of the work roll edge is determined based on the control effect of the work roll shifting on the edge drop and the unevenness of the contact pressure with the intermediate roll. The initial working roll profile curve is determined based on the working roll taper length and taper curve.

5. A data processing device for a rolling mill used in the cold continuous rolling of medium and high grade electrical steel, characterized in that, include: The roll diameter combination determination module is used to perform data simulation under the same working conditions based on a set mill simulation model and a set roll diameter range, and determine the optimal roll diameter combination based on the results of the data simulation. The roll profile curve determination module is used to determine the corresponding initial intermediate roll profile curve and initial work roll profile curve based on the optimal roll diameter combination. The coupling verification module is used to perform coupling verification on the initial intermediate roll profile curve and the initial work roll profile curve to determine the target intermediate roll profile curve and the target work roll profile curve. The coupling verification module includes: a coupling degree control index determination unit, used to determine the coupling degree control index of the work roll bending and intermediate roll bending based on the changes in the secondary and quaternary crown of the strip under the action of a unit work roll bending force, and the changes in the secondary and quaternary crown of the strip under the action of a unit intermediate roll bending force; and a non-uniformity determination unit, used to determine the non-uniformity of the inter-roll contact pressure distribution based on the maximum value and the average value of the inter-roll contact pressure. The coupling verification unit is used to determine the coupling verification target function based on the control coupling degree index, the unevenness of the inter-roller contact pressure distribution, and the preset specific gravity function, and to determine the corresponding target intermediate roll shape curve and target work roll shape curve based on the coupling verification target function, the initial intermediate roll shape curve, and the initial work roll shape curve.

6. The rolling mill data processing device for cold continuous rolling of medium and high grade electrical steel according to claim 5, characterized in that, The roller diameter combination determination module includes: The data simulation unit is used to perform data simulation under the same working conditions based on the set mill simulation model and the set roll diameter range, and to obtain the corresponding relationship between different roll diameters and crown adjustment range, rolling torque and rolling force, and lateral bending of the work roll. The combined calculation unit is used to determine the optimal roll diameter combination based on the correspondence between different roll diameters and crown adjustment ranges, rolling torque and rolling force, lateral bending of the work roll, and the set roll shape evaluation index.

7. The rolling mill data processing device for cold continuous rolling of medium and high grade electrical steel according to claim 5, characterized in that, The roller curve determination module includes: The intermediate roll tapered roll length determination unit is used to determine the intermediate roll tapered roll length under the current intermediate roll travel based on the maximum stroke, maximum and minimum width of the intermediate roll, the length of the intermediate roll body, and the quantity and specifications of the strip produced; The intermediate roll tapered roll profile determination unit is used to determine the tapered roll profile curve of the intermediate roll edge based on the preset polynomial coefficients and the roll body coordinate values ​​in the polynomial coordinate system. An initial intermediate roll profile curve determination unit is used to determine the initial intermediate roll profile curve based on the tapered roll profile length and the tapered roll profile curve of the intermediate roll.

8. The rolling mill data processing device for cold continuous rolling of medium and high grade electrical steel according to claim 5, characterized in that, The roller curve determination module includes: The work roll taper roll profile length determination unit is used to determine the work roll taper roll profile length under the current roll shifting stroke based on the maximum stroke, maximum and minimum width of the work roll, length of the work roll taper section, and length of the work roll body. The work roll taper profile curve determination unit is used to determine the taper profile curve of the work roll edge based on the control effect of the work roll shifting on the edge drop and the non-uniformity of the contact pressure with the intermediate roll. The initial work roll profile curve determination unit is used to determine the initial work roll profile curve based on the work roll taper profile length and taper profile curve.

9. An electronic device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that, When the processor executes the program, it implements the steps of the mill data processing method for cold continuous rolling of medium and high grade electrical steel as described in any one of claims 1 to 4.

10. A computer-readable storage medium having a computer program stored thereon, characterized in that, When executed by a processor, the computer program implements the steps of the mill data processing method for cold continuous rolling of medium and high grade electrical steel as described in any one of claims 1 to 4.

11. A computer program product, comprising a computer program / instructions, characterized in that, When the computer program / instruction is executed by the processor, it implements the steps of the mill data processing method for cold continuous rolling of medium and high grade electrical steel as described in any one of claims 1 to 4.

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