Method and device for determining rolling force in flat roll rolling process of corrugated composite plate

Abstract

The invention discloses a method and a device for determining rolling force in the flat roll rolling process of a corrugated composite plate, relates to the technical field of rolling, and aims to solve the problem of low rolling force calculation accuracy in the existing rolling process of the corrugated composite plate. The method comprises the steps of determining a second rolling parameter in the flat roll rolling process; partitioning the first state deformation region based on the first neutral point to obtain a first region set, and determining a first total rolling force; the second state deformation area is partitioned based on the second neutral point, a second area set is obtained, and second total rolling force is determined; and target rolling force in the flat roll rolling process is determined based on the first total rolling force and the second total rolling force. According to the method for determining the rolling force in the flat roll rolling process of the corrugated composite plate, the state of the rolling deformation area is divided into two states to calculate the rolling force, so that the accuracy of the rolling force is improved.

Description

Technical Field

[0001] The invention relates to the field of rolling technology, and in particular to a method and a device for determining rolling force during flat roll rolling of a corrugated composite plate. Background Art

[0002] Metal composite plate is a composite material of two or more metals. It has the advantages of high strength, corrosion resistance, good electrical and thermal conductivity, etc. It is widely used in important fields such as automobiles, aerospace and military industry. In recent years, a corrugated plate prepared by corrugation rolling process has attracted a lot of attention for its good quality and high bonding strength. In the first pass of the rolling process, the method of "upper roller is corrugated roller + lower roller is flat roller" is used to obtain the corrugated composite plate. In the second and subsequent passes, the corrugated surface of the corrugated composite plate is flattened by the method of upper and lower rollers are flat rollers. The obtained composite flat plate can be applied in practice. Since the complexity of the initial corrugated plate shape will increase the deformation difficulty of each layer of metal during the rolling process, the rolling mill performance requirements are high. In order to obtain a composite flat plate with excellent performance and flat plate shape, the determination of rolling force is an indispensable link. The determination of rolling force can provide a basis for the roll gap setting and plate shape control in the rolling process, and can also guide the design and selection of the bearing capacity and strength verification of the equipment, which is of great significance to extending the service life of the equipment and safe production.

[0003] At present, the rolling force in the existing corrugated composite plate rolling process is determined by establishing a relevant mathematical model for the corrugated rolling process to obtain the rolling force. The result is a corrugated composite plate, which cannot be applied to the flat roll rolling process. In addition, the existing method for determining the rolling force is usually to partition the rolling deformation zone under one state and calculate the rolling force. One state cannot truly reflect the flat roll rolling process of the corrugated composite plate, so the rolling force obtained has low accuracy. Summary of the invention

[0004] The object of the present invention is to provide a method and device for determining rolling force during flat roll rolling of a corrugated composite plate, which improves the accuracy of rolling force by dividing the state of the rolling deformation area into two states for calculating the rolling force.

[0005] In order to achieve the above object, the present invention provides the following technical solutions: In a first aspect, the present invention provides a method for determining rolling force during flat roll rolling of a corrugated composite plate, comprising: Determine a second rolling parameter in the flat roll rolling process; the second rolling parameter includes a reduction, a contact arc length, and a shear yield stress parameter; the second rolling parameter is calculated from the first rolling parameter in the flat roll rolling process of the corrugated composite plate; The first state deformation zone is partitioned based on the first neutral point to obtain a first area set, and a first total rolling force is determined based on the first rolling parameter, the second rolling parameter and the first area set; the first state deformation zone is a rolling deformation zone in which the upper roller is in full contact with the upper surface of the corrugated composite plate; The second state deformation zone is partitioned based on the second neutral point to obtain a second area set, and a second total rolling force is determined based on the first rolling parameter, the second rolling parameter and the second area set; the second state deformation zone is a rolling deformation zone in a state where the upper roller is in incomplete contact with the upper surface of the corrugated composite plate; A target rolling force during flat roll rolling is determined based on the first total rolling force and the second total rolling force.

[0006] Optionally, partitioning the first state deformation zone based on the first neutral point to obtain a first region set, and determining a first total rolling force based on the first rolling parameter and the second rolling parameter and the first region set includes: The first state deformation zone is divided by taking the vertical line where the first neutral point is located as a first dividing line to obtain a first region set, wherein the first region set includes a first complete region and a second complete region; According to the first rolling parameter and the second rolling parameter, the formula is adopted: ; Calculating and obtaining a first complete rolling force of the first complete area; in, , is the first full rolling force, is the contact friction coefficient between the base metal and the lower roll, is the equivalent yield shear stress, is the contact friction coefficient between the composite metal and the upper roll, is the amount of pressure, is the ripple amplitude, is the roller radius, is the horizontal coordinate of any point in the rolling deformation zone, is the thickness of the composite metal layer of the composite plate, is the base metal thickness of the composite plate; According to the first rolling parameter and the second rolling parameter, the formula is adopted: ; calculating and obtaining a second complete rolling force in the second complete area; in, , is the second full rolling force; is the contact arc length, is the post-entry tension; Determining a first neutral point abscissa based on a first boundary condition, the first complete rolling force, and the second complete rolling force; the first boundary condition is that the rolling forces of the first complete region and the second complete region at the first dividing line are equal; Based on the first neutral point abscissa, the first complete rolling force and the second complete rolling force are integrated and solved to obtain a first total rolling force of the deformation zone in the first state.

[0007] Optionally, based on the first neutral point abscissa, the first complete rolling force and the second complete rolling force are integrated and solved to obtain the first total rolling force of the deformation zone in the first state, including: Using the formula: ; Calculating and obtaining a first total rolling force in the deformation zone of the first state; in, is the first total rolling force, is the width of the corrugated composite board, is the horizontal coordinate of the first neutral point.

[0008] Optionally, partitioning the second state deformation zone based on the second neutral point to obtain a second region set, and determining the second total rolling force based on the first rolling parameter and the second rolling parameter and the second region set includes: Determine the target shape parameter, the abscissa of the first characteristic point and the abscissa of the second characteristic point in the deformation zone of the second state according to the first rolling parameter and the second rolling parameter; the first characteristic point is the intersection point of the corrugated composite plate and the upper roller in the deformation zone of the second state, and the second characteristic point is the trough point of the corrugated composite plate in the deformation zone of the second state; The second state deformation zone is divided by taking the vertical line where the second neutral point is located as the second dividing line, the vertical line where the first characteristic point is located as the third dividing line, and the vertical line where the second characteristic point is located as the fourth dividing line to obtain a second region set, wherein the second region set includes a first incomplete region, a second incomplete region, a third incomplete region, and a fourth incomplete region; Based on the target shape parameter, the abscissa of the first characteristic point, the abscissa of the second characteristic point, the first rolling parameter, and the second rolling parameter, a first incomplete rolling force of the first incomplete region, a second incomplete rolling force of the second incomplete region, a third incomplete rolling force of the third incomplete region, and a fourth incomplete rolling force of the fourth incomplete region are calculated; Determining the second neutral point abscissa according to a fourth boundary condition, the first incomplete rolling force and the second incomplete rolling force; the fourth boundary condition is that the rolling forces of the first incomplete region and the second incomplete region at the second dividing line are equal; Based on the second neutral point horizontal coordinate, the first incomplete rolling force, the second incomplete rolling force, the third incomplete rolling force and the fourth incomplete rolling force are integrated and solved to obtain the second total rolling force of the deformation zone in the second state.

[0009] Optionally, the target shape parameters include a first shape parameter, a second shape parameter, a third shape parameter, and a fourth shape parameter; the first incomplete rolling force of the first incomplete area, the second incomplete rolling force of the second incomplete area, the third incomplete rolling force of the third incomplete area, and the fourth incomplete rolling force of the fourth incomplete area calculated based on the target shape parameters, the abscissa of the first feature point, the abscissa of the second feature point, the first rolling parameter, and the second rolling parameter include: According to the target shape parameter, the first rolling parameter and the second rolling parameter, the formula is adopted: ; Calculating and obtaining a fourth incomplete rolling force of the fourth incomplete region; in, ; ; ; ; ; is the third shape parameter, is the fourth shape parameter, is the fourth incomplete rolling force; Based on the second boundary condition, the target shape parameter, the second characteristic point abscissa, the first rolling parameter, the second rolling parameter and the fourth incomplete rolling force are calculated using the formula: ; The third incomplete rolling force of the third incomplete region is calculated; the second boundary condition is that the rolling forces of the fourth incomplete region and the third incomplete region are equal at the fourth cutting line; in, ; is the horizontal coordinate of the second feature point, is the third incomplete rolling force, is the first shape parameter, is the second shape parameter; Based on the third boundary condition, the target shape parameter, the first characteristic point abscissa, the first rolling parameter, the second rolling parameter and the third incomplete rolling force, the formula is adopted: ; The second incomplete rolling force of the second incomplete region is calculated; the third boundary condition is that the rolling forces of the third incomplete region and the second incomplete region are equal at the third dividing line; in, ; is the second incomplete rolling force; According to the first rolling parameter and the second rolling parameter, the formula is adopted: ; Calculating and obtaining a first incomplete rolling force of the first incomplete area; in, , is the tension before the outlet, is the first incomplete rolling force.

[0010] Optionally, based on the second neutral point horizontal coordinate, the first incomplete rolling force, the second incomplete rolling force, the third incomplete rolling force and the fourth incomplete rolling force are integrated and solved to obtain the second total rolling force of the deformation zone in the second state, including: Using the formula: ; calculating and obtaining a second total rolling force in the deformation zone of the second state; in, is the second total rolling force, is the horizontal coordinate of the second neutral point.

[0011] Optionally, determining the target shape parameter, the abscissa of the first characteristic point, and the abscissa of the second characteristic point of the deformation zone in the second state according to the first rolling parameter and the second rolling parameter comprises: According to the first rolling parameter, the formula is adopted: ; Calculate and obtain the first shape parameter; in, is the number of ripples, >0, is the equivalent radius of the corrugation roller; According to the first rolling parameter and the second rolling parameter, the formula is adopted: ; The second shape parameter is calculated; in, is the thickness of the composite metal layer of the corrugated composite plate, is the base metal thickness of the corrugated composite plate; According to the first rolling parameter, the formula is adopted: ; The third shape parameter is calculated; According to the first rolling parameter and the second rolling parameter, the formula is adopted: ; The fourth shape parameter is calculated; According to the first rolling parameter, the second rolling parameter, the third shape parameter and the fourth shape parameter, the formula is adopted: ; Calculate and obtain the horizontal coordinate of the first feature point; According to the first rolling parameter and the second rolling parameter, the formula is adopted: ; Calculate and obtain the horizontal coordinate of the second feature point; in, is the horizontal coordinate of the first feature point, is the horizontal coordinate of the second feature point.

[0012] Optionally, determining the target rolling force in the flat roll rolling process based on the first total rolling force and the second total rolling force includes: The first total rolling force and the second total rolling force are sorted according to a preset rule to obtain a target rolling force; the target rolling force is the first total rolling force and the second total rolling force arranged alternately.

[0013] Optionally, determining the abscissa of the first neutral point based on the first boundary condition, the first complete rolling force, and the second complete rolling force comprises: For the formula: ; Solve and obtain the horizontal coordinate of the first neutral point.

[0014] In a second aspect, the present invention provides a device for determining rolling force during flat roll rolling of a corrugated composite plate, comprising: A second rolling parameter determination module, used to determine a second rolling parameter in the flat roll rolling process; the second rolling parameter includes a reduction amount, a contact arc length, and a shear yield stress parameter; the second rolling parameter is calculated from the first rolling parameter in the flat roll rolling process of the corrugated composite plate; A total rolling force calculation module for the first state deformation zone, used for partitioning the first state deformation zone based on the first neutral point to obtain a first area set, and determining a first total rolling force based on the first rolling parameter and the second rolling parameter and the first area set; the first state deformation zone is a rolling deformation zone in which the upper roller is in full contact with the upper surface of the corrugated composite plate; A total rolling force calculation module for the second state deformation zone is used to partition the second state deformation zone based on the second neutral point to obtain a second region set, and determine the second total rolling force based on the first rolling parameter, the second rolling parameter and the second region set; the second state deformation zone is a rolling deformation zone in a state where the upper roller is in an incomplete contact state with the upper surface of the corrugated composite plate; The target rolling force determination module is used to determine the target rolling force in the flat roll rolling process based on the first total rolling force and the second total rolling force.

[0015] The technical effect of a method for determining the rolling force during flat roll rolling of a corrugated composite plate is as follows: the second rolling parameter during flat roll rolling determined in the method is the rolling parameter during flat roll rolling of the corrugated composite plate, and the rolling force during flat roll rolling of the corrugated composite plate can be predicted; the first state deformation zone is partitioned based on the first neutral point to obtain a first area set, and the first total rolling force is determined based on the first rolling parameter, the second rolling parameter and the first area set; the second state deformation zone is partitioned based on the second neutral point to obtain a second area set, and the second total rolling force is determined based on the first rolling parameter, the second rolling parameter and the second area set; the target rolling force during flat roll rolling is determined based on the first total rolling force and the second total rolling force, taking into account that the flat roll rolling deformation zone has two states during the rolling process, the rolling forces in the two states are calculated respectively, and the target rolling force is determined based on the rolling forces in the two states, so that the calculated rolling force is more accurate.

[0016] The technical effect of a device for determining rolling force during flat roll rolling of a corrugated composite plate is as follows: the device obtains rolling parameters during flat roll rolling of the corrugated composite plate, and can predict the rolling force during flat roll rolling of the corrugated composite plate. In addition, the device takes into account that the flat roll rolling deformation zone has two states during the rolling process, calculates the rolling force in the two states respectively, and determines the target rolling force based on the rolling force in the two states, so that the calculated rolling force is more accurate. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings: Figure 1 A flow chart of a method for determining rolling force during flat roll rolling of a corrugated composite plate provided by the present invention; Figure 2 Schematic diagram of the corrugated composite board and composite flat board provided by the present invention; Figure 3 A schematic diagram of flat roll rolling of a corrugated composite plate provided by the present invention; Figure 4A schematic diagram of a rolling deformation zone in a full contact state provided by the present invention; Figure 5 A schematic diagram of a rolling deformation zone in an incomplete contact state provided by the present invention; Figure 6 A comparison chart of the model prediction value and the experimental value provided by the present invention; Figure 7 A schematic structural diagram of a rolling force determination device during flat roll rolling of a corrugated composite plate provided by the present invention.

[0018] Reference numerals: 1-Multi-layer, 2-Base layer. DETAILED DESCRIPTION

[0019] In order to clearly describe the technical solutions of the embodiments of the present invention, in the embodiments of the present invention, words such as "first" and "second" are used to distinguish the same items or similar items with basically the same functions and effects. For example, the first threshold and the second threshold are only used to distinguish different thresholds, and their order is not limited. Those skilled in the art can understand that words such as "first" and "second" do not limit the quantity and execution order, and words such as "first" and "second" do not necessarily limit them to be different.

[0020] It should be noted that, in the present invention, words such as "exemplary" or "for example" are used to indicate examples, illustrations or descriptions. Any embodiment or design described as "exemplary" or "for example" in the present invention should not be interpreted as being more preferred or more advantageous than other embodiments or designs. Specifically, the use of words such as "exemplary" or "for example" is intended to present related concepts in a specific way.

[0021] In the present invention, "at least one" means one or more, and "plurality" means two or more. "And / or" describes the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone, where A and B can be singular or plural. The character " / " generally indicates that the objects associated before and after are in an "or" relationship. "At least one of the following" or similar expressions refers to any combination of these items, including any combination of single or plural items. For example, at least one of a, b or c can mean: a, b, c, the combination of a and b, the combination of a and c, the combination of b and c, or the combination of a, b and c, where a, b, c can be single or multiple.

[0022] At present, there are relatively few studies on the rolling force during the flat roll rolling of corrugated composite plates, and the determination of rolling force mainly adopts experimental method and finite element method. The experimental method mainly uses force sensors to collect the rolling force of the rolling process and outputs it through signal output equipment. The whole process involves a lot of equipment for operation, the process is cumbersome, time-consuming, and easily affected by external environmental factors. The finite element method mainly establishes an assembly model of the entire rolling process, and manually extracts the stable rolling force during the rolling process through software calculation processing. The simulation of the entire rolling process takes a long time, and the data extraction process is complicated. In addition, the two methods can only conduct single process scheme experiments or simulations, which are inefficient, have high labor costs, and are not convenient for engineering applications.

[0023] In addition, in addition to the above two methods, other calculations of rolling force usually establish relevant mathematical models for the corrugated rolling process to obtain the rolling force, and the result is a corrugated composite plate. However, in actual applications, a composite flat plate is required, so the prepared corrugated composite plate needs to be flattened through a flat roll rolling process. There is currently a lack of a rolling force prediction method in the flat roll rolling process to guide the preparation of composite flat plates. Therefore, there is an urgent need for a method that is short in time, convenient in calculation, high in efficiency and low in cost for predicting the rolling force in the flat roll rolling process of corrugated composite plates.

[0024] In order to solve the above problems, the present invention provides a method and device for determining the rolling force during the flat roll rolling process of a corrugated composite plate, which will be described below with reference to the accompanying drawings.

[0025] See also Figure 1 The present invention provides a method for determining rolling force during flat roll rolling of a corrugated composite plate, comprising the following steps: Step 110: determining a second rolling parameter in a flat roll rolling process; The second rolling parameter includes the reduction , contact arc length And the shear yield stress parameter, the shear yield stress parameter includes the shear yield stress of the clad metal of the corrugated composite plate , the shear yield stress of the base metal of the corrugated composite plate and the equivalent yield shear stress during rolling The second rolling parameter is calculated from the first rolling parameter during the flat roll rolling of the corrugated composite plate; the first rolling parameter is the process parameter obtained during the rolling process, including the thickness of the composite metal layer of the corrugated composite plate , the thickness of the base metal of the corrugated composite plate , the width of the corrugated composite board , the roll radius of the upper and lower rolls during flat roll rolling , the contact friction factor between the composite metal and the upper roll during rolling , the contact friction factor between the base metal and the lower roll , tension before exit , post-entry tension , the thickness of the composite metal layer of the composite plate after rolling and the thickness of the base metal , the number of corrugations of the corrugation roller during the corrugation rolling process , ripple amplitude , equivalent radius of the corrugation roller .

[0026] like Figure 2 As shown, in the rolling process of the corrugated composite plate, the upper roller is a corrugated roller and the lower roller is a flat roller. After rolling, the corrugated composite plate is obtained. The upper surface of the composite layer 1 is corrugated at this time, and the contact surface between the base layer 2 and the composite layer 1 is also corrugated. The corrugated surface of the composite layer 1 is flattened by flat rolling to obtain a composite flat plate. At this time, the upper surface of the composite layer 1 is a flat surface. Figure 3 As shown, when the corrugated composite plate is flat-rolled, the upper and lower rollers are flat rollers, and the upper and lower surfaces of the corrugated composite plate are gradually flattened by the rolling of the rollers.

[0027] Step 120: partitioning the first state deformation zone based on the first neutral point to obtain a first region set, and determining a first total rolling force based on the first rolling parameter, the second rolling parameter and the first region set; the first state deformation zone is a rolling deformation zone in a state where the lower surface of the upper roller is in full contact with the upper surface of the corrugated composite plate; See also Figure 4 The figure shows the rolling deformation zone in full contact state. In this state, the lower surface of the upper roller in the rolling deformation zone is in full contact with the upper surface of the corrugated composite plate. The intersection of the line connecting the center of the upper and lower rollers and the straight line where the thickness center of the composite plate outlet is located along the rolling direction is the coordinate origin. Create coordinate axes. The positive direction of the axis is the rolling direction. The positive direction of the axis is the direction from the origin to the center of the upper roll. F The vertical line is the first dividing line which divides the first state deformation area into two areas: a first complete area I and a second complete area II.

[0028] Step 130: partitioning the second state deformation zone based on the second neutral point to obtain a second region set, and determining a second total rolling force based on the first rolling parameter, the second rolling parameter and the second region set; the second state deformation zone is a rolling deformation zone in a state where the lower surface of the upper roller is in an incomplete contact state with the upper surface of the corrugated composite plate; See also Figure 5, the figure shows the rolling deformation zone under the incomplete contact state, in which the lower surface of the upper roller in the rolling deformation zone is incompletely in contact with the upper surface of the corrugated composite plate. Figure 5 , with the second neutral point N P The vertical line where the second feature point S is located is the second dividing line, the vertical line where the first feature point S is located is the third dividing line, and the vertical line where the second feature point U is located is the fourth dividing line, which divides the second state deformation area into four areas: the first incomplete area A, the second incomplete area B, the third incomplete area C, and the fourth incomplete area D.

[0029] Step 140: Determine a target rolling force during flat roll rolling based on the first total rolling force and the second total rolling force.

[0030] Considering the special corrugated shape of the surface of the corrugated composite plate, the rolling force will show regular fluctuations in a stable state during the rolling process. Therefore, after obtaining the first total rolling force in the full contact state and the second total rolling force in the incomplete contact state, the first total rolling force and the second total rolling force are sorted according to a preset rule to obtain a target rolling force; the target rolling force is the first total rolling force and the second total rolling force arranged alternately. The preset rule is a time variation rule.

[0031] Figure 1 The above method obtains the rolling parameters in the flat roll rolling process, which can realize the prediction of the rolling force in the flat roll rolling process of the corrugated composite plate. In addition, this method takes into account that the flat roll rolling deformation zone has two states during the rolling process, calculates the rolling force in the two states respectively, and determines the target rolling force based on the rolling force in the two states, so that the calculated rolling force is more accurate.

[0032] based on Figure 1 This specification also provides some specific implementation methods of the method, which are described below.

[0033] Wherein, step 110 can be implemented based on the following steps: Step 111: Calculate the reduction amount during the flat roll rolling process according to formula (1), as shown in formula (1): (1) in, is the amount of pressure, is the thickness of the composite metal layer of the corrugated composite plate, is the base metal thickness of the corrugated composite plate, It is the composite metal backing of the composite plate. The base metal thickness of the composite plate.

[0034] Step 112: The contact arc length during the flat roll rolling process is calculated according to formula (2), as shown in formula (2): (2) in, is the contact arc length, is the roller radius.

[0035] Step 113: Calculate the shear yield stress of the composite metal of the corrugated composite plate according to formula (3), as shown in formula (3): (3) in, is the shear yield stress of the composite metal layer of the corrugated composite plate, is the yield stress of the composite metal, It is a parameter of the composite metal model, and its value depends on the specific material.

[0036] Step 114: Calculate the shear yield stress of the base metal of the corrugated composite plate according to formula (4), as shown in formula (4): (4) in, is the shear yield stress of the base metal of the corrugated composite plate, is the yield stress of the base metal, It is the base metal model parameter, and its value depends on the specific material.

[0037] Step 115 calculates the equivalent yield shear stress during the rolling process according to formula (5), as shown in formula (5): (5) in, is the equivalent yield shear stress.

[0038] Step 120 can be implemented based on the following steps: Step 121: dividing the first state deformation zone by taking the vertical line where the first neutral point is located as a first dividing line to obtain a first region set, wherein the first region set includes a first complete region and a second complete region; Step 122: According to the contact friction coefficient between the base metal and the lower roller, the contact friction coefficient between the composite metal and the upper roller, the composite metal thickness of the composite plate, the base metal thickness of the composite plate, the roller radius, the reduction, the corrugation amplitude, and the equivalent yield shear stress in the second rolling parameters, formula (6) is used: (6) Calculating and obtaining a first complete rolling force in a first complete area; in, , is the first full rolling force, is the contact friction coefficient between the base metal and the lower roll, is the equivalent yield shear stress, is the contact friction coefficient between the composite metal and the upper roll, is the amount of pressure, is the ripple amplitude, is the roller radius, is the horizontal coordinate of any point in the rolling deformation zone, is the thickness of the composite metal layer of the composite plate, is the base metal thickness of the composite plate.

[0039] Step 123: According to the contact friction coefficient between the base metal and the lower roller, the contact friction coefficient between the composite metal and the upper roller, the roller radius, the post-entry tension, the composite metal thickness and the base metal thickness of the composite plate, the corrugation amplitude, the reduction amount, the equivalent yield shear stress and the contact arc length in the second rolling parameters, formula (7) is used: (7) calculating and obtaining a second complete rolling force in the second complete area; in, , is the second full rolling force; is the contact arc length, is the post-entry tension.

[0040] Step 124: Determine the abscissa of the first neutral point based on the first boundary condition, the first complete rolling force, and the second complete rolling force; the first boundary condition is that the rolling forces of the first complete area and the second complete area at the first dividing line are equal; that is, When , the first full rolling force and the second full rolling force are equal, as shown in formula (8): (8) Solve formula (8) to obtain the horizontal coordinate of the first neutral point: . is the first full rolling force, It is the second full rolling force.

[0041] Step 125: Based on the first neutral point horizontal coordinate, the first complete rolling force and the second complete rolling force are integrated and solved to obtain a first total rolling force of the deformation zone in the first state.

[0042] As an optional method, step 125 can be implemented based on the following steps: Using formula (9): (9) Calculating and obtaining a first total rolling force in the deformation zone of the first state; in, is the first total rolling force, is the width of the corrugated composite board.

[0043] As an optional method, step 130 can be implemented based on the following steps: Step 131: determining the target shape parameter, the first characteristic point horizontal coordinate and the second characteristic point horizontal coordinate of the second state deformation zone according to the first rolling parameter and the second rolling parameter; the first characteristic point is the intersection point of the corrugated composite plate and the upper roller in the second state deformation zone, and the second characteristic point is the trough point of the corrugated composite plate in the second state deformation zone; the target shape parameter includes a first shape parameter, a second shape parameter, a third shape parameter and a fourth shape parameter; Step 132: Segment the second state deformation zone by taking the vertical line where the second neutral point is located as the second dividing line, the vertical line where the first characteristic point is located as the third dividing line, and the vertical line where the second characteristic point is located as the fourth dividing line to obtain a second region set, wherein the second region set includes a first incomplete region, a second incomplete region, a third incomplete region, and a fourth incomplete region; Step 133: Based on the target shape parameter, the abscissa of the first feature point, the abscissa of the second feature point, the first rolling parameter, and the second rolling parameter, a first incomplete rolling force of the first incomplete region, a second incomplete rolling force of the second incomplete region, a third incomplete rolling force of the third incomplete region, and a fourth incomplete rolling force of the fourth incomplete region are calculated; Step 134: Determine the second neutral point horizontal coordinate according to the fourth boundary condition, the first incomplete rolling force and the second incomplete rolling force; the fourth boundary condition is that the rolling forces of the first incomplete region and the second incomplete region at the second dividing line are equal; that is, When , the first incomplete rolling force and the second incomplete rolling force are equal, as shown in formula (10): (10) Solve formula (10) to obtain the horizontal coordinate of the second neutral point.

[0044] in, is the first incomplete rolling force, It is the second incomplete rolling force.

[0045] Step 135: Based on the second neutral point horizontal coordinate, the first incomplete rolling force, the second incomplete rolling force, the third incomplete rolling force and the fourth incomplete rolling force are integrated and solved to obtain a second total rolling force of the deformation zone in the second state.

[0046] As an optional method, step 131 can be implemented based on the following steps: Step 1311: According to the number of corrugations in the first rolling parameter , ripple amplitude , Equivalent radius of the corrugation roller , using formula (11): (11) Calculate and obtain the first shape parameter; Step 1312: Based on the thickness of the composite metal and the base metal of the corrugated composite plate in the first rolling parameter, the corrugation amplitude, the number of corrugations, the equivalent radius of the corrugation roller, and the contact arc length in the second rolling parameter, formula (12) is used: (12) The second shape parameter is calculated; Step 1313: According to the number of corrugations in the first rolling parameter , ripple amplitude , Equivalent radius of the corrugation roller , using formula (13): (13) The third shape parameter is calculated; Step 1314: Based on the thickness of the composite metal and the base metal of the corrugated composite plate in the first rolling parameter, the corrugation amplitude, the number of corrugations, the equivalent radius of the corrugation roller, and the contact arc length in the second rolling parameter, formula (14) is used: (14) The fourth shape parameter is calculated; Step 1315: Based on the roller radius, corrugation amplitude, composite metal thickness and base metal thickness of the composite plate in the first rolling parameter, the reduction in the second rolling parameter, the third shape parameter, and the fourth shape parameter, formula (15) is used: (15) Calculate and obtain the horizontal coordinate of the first feature point; Step 1316: According to the equivalent radius of the corrugation roller in the first rolling parameter, the number of corrugations and the contact arc length in the second rolling parameter, formula (16) is used: (16) Calculate and obtain the horizontal coordinate of the second feature point; in, is the horizontal coordinate of the first feature point, is the horizontal coordinate of the second feature point, is the first shape parameter, is the second shape parameter.

[0047] As an optional method, step 133 can be implemented based on the following steps: Step 1331: According to the third shape parameter, the fourth shape parameter, the roller radius in the first rolling parameter, the corrugation amplitude, the thickness of the composite metal and the base metal of the composite plate, the contact friction coefficient between the composite metal and the upper roller, the contact friction coefficient between the base metal and the lower roller, the reduction in the second rolling parameter, the equivalent yield shear stress, and the contact arc length, formula (17) is used: (17) Calculating and obtaining a fourth incomplete rolling force of the fourth incomplete region; in, ; ; ; ; ; is the third shape parameter, is the fourth shape parameter, is the fourth incomplete rolling force; Step 1332: Based on the second boundary condition, the first shape parameter, the second shape parameter, the third shape parameter, the fourth shape parameter, the second characteristic point abscissa, the contact friction coefficient between the composite metal and the upper roller in the first rolling parameter, the contact friction coefficient between the base metal and the lower roller, the roller radius, the composite metal thickness and the base metal thickness of the composite plate, the corrugation amplitude, the reduction in the second rolling parameter and the fourth incomplete rolling force, formula (18) is used: (18) The third incomplete rolling force of the third incomplete region is calculated; the second boundary condition is that the rolling forces of the fourth incomplete region and the third incomplete region are equal at the fourth cutting line; in, ; is the horizontal coordinate of the second feature point, is the third incomplete rolling force, is the first shape parameter, is the second shape parameter; Step 1333: Based on the third boundary condition, the target shape parameter, the abscissa of the first feature point, the contact friction coefficient between the composite metal and the upper roller, the contact friction coefficient between the base metal and the lower roller, the roller radius, the corrugation amplitude, the composite metal thickness and the base metal thickness of the composite plate, the equivalent yield shear stress, the reduction and the third incomplete rolling force in the second rolling parameter, formula (19) is used: (19) The second incomplete rolling force of the second incomplete region is calculated; the third boundary condition is that the rolling forces of the third incomplete region and the second incomplete region are equal at the third dividing line; in, ; is the second incomplete rolling force; Step 1334: Based on the contact friction coefficient between the composite metal and the upper roll, the contact friction coefficient between the base metal and the lower roll, the corrugation amplitude, the tension before the exit, the composite metal thickness of the composite plate and the base metal thickness, and the reduction amount and equivalent yield shear stress in the second rolling parameters, formula (20) is used: (20) Calculating and obtaining a first incomplete rolling force of the first incomplete area; in, , is the tension before the outlet, is the first incomplete rolling force.

[0048] As an optional method, step 135 can be implemented based on the following steps: Using formula (21): (twenty one) calculating and obtaining a second total rolling force in the deformation zone of the second state; in, is the second total rolling force.

[0049] Next, the specific implementation process of the technical solution provided by the present invention is described by taking the copper-aluminum corrugated composite plate as an example: Step 1: The composite layer of the corrugated composite plate is a copper layer, and the base layer is an aluminum layer. The composite metal thickness of the corrugated composite plate is obtained according to a certain rolling process data. , base metal thickness , the width of the corrugated composite board ; Roller radius of the upper and lower rolls during flat roll rolling , the contact friction factor between the composite metal and the upper roll during rolling , the contact friction factor between the base metal and the lower roll , tension before exit , post-entry tension ; Thickness of the composite metal layer of the composite plate after rolling , base metal thickness ; Number of corrugations of the corrugation roller during the corrugation rolling process , ripple amplitude , the equivalent radius of the corrugation roller ; Step 2: Based on the roller radius, the composite metal thickness of the corrugated composite plate, the base metal thickness, the composite metal thickness of the composite flat plate, and the base metal thickness, calculate the reduction and contact arc length during the flat roll rolling process as follows: ; ; Step 3: Calculate the shear yield stress of the clad metal, the shear yield stress of the base metal and the equivalent yield shear stress during rolling according to the clad metal thickness of the corrugated clad plate, the clad metal thickness of the clad flat plate and the base metal thickness; According to the material properties, the yield stress of the copper layer metal is 335.2MPa and the model parameter is 0.113; the yield stress of the aluminum layer metal is 189.2MPa and the model parameter is 0.239. The shear yield stress of the composite metal can be calculated , the shear yield stress of the base metal and the equivalent yield shear stress during rolling as follows: ; ; ; Step 4: Divide the deformation zone into two states according to the shape of the flat roll rolling deformation zone, including a full contact state and an incomplete contact state, and calculate the corresponding rolling forces in the two states respectively; Step 5: The intersection of the upper and lower roller center lines and the straight line where the composite plate outlet thickness center is located along the rolling direction is taken as the coordinate origin Create coordinate axes. The positive direction of the axis is the rolling direction. The positive direction of the axis is the line from the origin to the center of the upper roll. The deformation zone in the full contact state is divided into two areas, including area I and area II, and the first full rolling force in area I and the second full rolling force in area II are calculated respectively; Step 5.1: Calculate the first complete rolling force in zone I based on the corrugation amplitude, equivalent yield shear stress, reduction, contact friction factor between the composite metal and the upper roll, contact friction factor between the base metal and the lower roll, and roll radius. as follows: ; in, ; Step 5.2: Calculate the second complete rolling force in zone II based on the corrugation amplitude, equivalent yield shear stress, reduction, contact friction factor between the composite metal and the upper roll, contact friction factor between the base metal and the lower roll, upper and lower roll radii and contact arc length during flat roll rolling. as follows; ; in, ; Step 6: According to the boundary condition that the rolling force at the junction of zone I and zone II is equal, the coordinates of the neutral point of the lower roller are determined, and the first total rolling force under the full contact state is calculated by combining the contact arc length and the width of the composite plate and the rolling force obtained in zones I to II. .in and The specific method is as follows: According to the stress boundary conditions, hour, , and the solution is is (0.002192, 0), and then the first total rolling force in the full contact state is obtained by integrating regions I and II. as follows: ; Step 7: Take the line connecting the upper and lower roller centers and the straight line where the thickness center of the composite plate exit along the rolling direction is located as the coordinate origin Create coordinate axes. The positive direction of the axis is the rolling direction. The positive direction of the axis is the direction from the origin to the center of the upper roll. The deformation zone under the incomplete contact state is divided into four areas, including area A, area B, area C and area D. The first incomplete rolling force in area A is calculated separately. , the second incomplete rolling force in zone B , the third incomplete rolling force in zone C And the fourth incomplete rolling force in area D ; Step 7.1: Calculate the target shape parameters under incomplete contact state according to the corrugation amplitude, number of corrugations, equivalent radius of the corrugated roller, upper and lower roller radius and contact arc length during flat roll rolling. , , , And feature points and The coordinates are as follows: ; ; ; ; ; ; Step 7.2: Based on the corrugation amplitude, equivalent yield shear stress, reduction, contact friction factor between the composite metal and the upper roll, contact friction factor between the base metal and the lower roll, and shape parameters , , the entrance tension and the radius of the upper and lower rolls during the flat roll rolling process, calculate the rolling force in the D zone as follows: ; ; ; ; ; ; Step 7.3: According to the corrugation amplitude, equivalent yield shear stress, reduction, contact friction coefficient between the composite metal and the upper roll, contact friction coefficient between the base metal and the lower roll, shape parameters , , the upper and lower roll radii during flat roll rolling, as well as the C and D zones The rolling force in zone C is calculated based on the boundary condition of equal rolling force at as follows: ; ; Step 7.4: According to the corrugation amplitude, equivalent yield shear stress, reduction, contact friction factor between the composite metal and the upper roll, contact friction factor between the base metal and the lower roll, the upper and lower roll radii during flat roll rolling, and the B and C zones The rolling force in area B is calculated based on the boundary condition of equal rolling force at as follows: ; ; Step 7.5: Calculate the rolling force in zone A based on the corrugation amplitude, equivalent yield shear stress, reduction, contact friction factor between the composite metal and the upper roll, contact friction factor between the base metal and the lower roll, upper and lower roll radii during flat roll rolling, and tension before exit. as follows: ; in, .

[0050] Step 8: According to the boundary condition that the rolling force at the junction of area A and area B is equal, determine , and the rolling force obtained by combining the contact arc length, the width of the composite plate and the area A~D ~ , calculate the second total rolling force in the incomplete contact state .in and The specific method is as follows: According to the stress boundary conditions, hour, , and the solution is is (0.001542, 0), and then the integral solution is obtained by integrating the regions A, B, C, and D. as follows: ; Step 9: Considering the special corrugated shape of the corrugated composite plate surface, it will show regular fluctuations in the stable state during the rolling process. Get the rolling force in the full contact state and rolling force in incomplete contact state Finally, the two are arranged regularly according to time to obtain the rolling force during the flat roll rolling process.

[0051] See also Figure 6 In order to verify the reliability of the present invention, the same process parameters as the above method were used for finite element simulation to extract the rolling force in the simulated stable rolling process. By comparing the results, it can be obtained that the average value of the simulated rolling force is 159.7kN, the average value calculated by the model is 163.52kN, and the error is within 2.4%. It is proved that the rolling force calculated by the present invention in the flat roll rolling process of the corrugated composite plate has high accuracy and can be better applied in actual production.

[0052] In the case of dividing each functional module into corresponding functional modules, Figure 7 FIG. 2 shows a schematic diagram of a rolling force determination device for a corrugated composite plate during flat roll rolling provided by the present invention. Figure 7 As shown, the device comprises: The second rolling parameter determination module 701 is used to determine the second rolling parameter in the flat roll rolling process; the second rolling parameter includes the reduction amount, the contact arc length and the shear yield stress parameter; the second rolling parameter is calculated from the first rolling parameter in the flat roll rolling process of the corrugated composite plate; The total rolling force calculation module 702 of the first state deformation zone is used to partition the first state deformation zone based on the first neutral point to obtain a first area set, and determine the first total rolling force based on the first rolling parameter and the second rolling parameter and the first area set; the first state deformation zone is the rolling deformation zone in the state where the upper roller is in full contact with the upper surface of the corrugated composite plate; The second state deformation zone total rolling force calculation module 703 partitions the second state deformation zone based on the second neutral point to obtain a second zone set, and determines the second total rolling force based on the first rolling parameter and the second rolling parameter and the second zone set; the second state deformation zone is a rolling deformation zone in a state where the upper roller is in an incomplete contact state with the upper surface of the corrugated composite plate; The target rolling force determination module 704 is used to determine the target rolling force in the flat roll rolling process based on the first total rolling force and the second total rolling force.

[0053] All relevant contents of each step involved in the above method embodiment can be referred to the functional description of the corresponding functional module, and will not be repeated here.

[0054] The above mainly introduces the solution provided by the embodiment of the present invention from the perspective of the interaction between various modules. It can be understood that in order to realize the above functions, it includes hardware structures and / or software modules corresponding to the execution of various functions. It should be easy for those skilled in the art to realize that, in combination with the units and algorithm steps of each example described in the embodiments disclosed herein, the present invention can be implemented in the form of hardware or a combination of hardware and computer software. Whether a function is executed in the form of hardware or computer software driving hardware depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to exceed the scope of the present invention.

[0055] In the above embodiments, all or part of the embodiments may be implemented by software, hardware, firmware or any combination thereof. When implemented by software, all or part of the embodiments may be implemented in the form of a computer program product. The computer program product includes one or more computer programs or instructions. When the computer program or instruction is loaded and executed on a computer, the process or function described in the embodiment of the present invention is executed in whole or in part. The computer may be a general-purpose computer, a special-purpose computer, a computer network, a terminal, a user device or other programmable device. The computer program or instruction may be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, the computer program or instruction may be transmitted from one website, computer, server or data center to another website, computer, server or data center by wired or wireless means. The computer-readable storage medium may be any available medium that a computer can access or a data storage device such as a server or data center that integrates one or more available media. The available medium may be a magnetic medium, such as a floppy disk, a hard disk, or a tape; it may also be an optical medium, such as a digital video disc (DVD); it may also be a semiconductor medium, such as a solid state drive (SSD).

[0056] Although the present invention is described herein in conjunction with various embodiments, in the process of implementing the claimed invention, those skilled in the art may understand and implement other variations of the disclosed embodiments by viewing the drawings, the disclosure, and the appended claims. In the claims, the word "comprising" does not exclude other components or steps, and "one" or "an" does not exclude multiple situations. A single processor or other unit may implement several functions listed in a claim. Certain measures are recorded in different dependent claims, but this does not mean that these measures cannot be combined to produce good results.

[0057] Although the present invention has been described in conjunction with specific features and embodiments thereof, it is apparent that various modifications and combinations may be made thereto without departing from the spirit and scope of the present invention. Accordingly, this specification and the accompanying drawings are merely exemplary illustrations of the present invention as defined by the appended claims and are deemed to cover any and all modifications, variations, combinations or equivalents within the scope of the present invention. Obviously, those skilled in the art may make various modifications and variations to the present invention without departing from the spirit and scope of the present invention. Thus, the present invention is intended to include such modifications and variations if they fall within the scope of the claims of the present invention and their equivalents.

Claims

1. A method for determining rolling force during flat roll rolling of a corrugated composite plate, characterized in that: include: determining a second rolling parameter in a flat roll rolling process; The second rolling parameters include reduction, contact arc length and shear yield stress parameters; The second rolling parameter is calculated from the first rolling parameter during the flat roll rolling process of the corrugated composite plate; Partitioning the first state deformation zone based on the first neutral point to obtain a first region set, and determining a first total rolling force based on the first rolling parameter and the second rolling parameter and the first region set; The first state deformation zone is a rolling deformation zone in a state where the upper roller is in full contact with the upper surface of the corrugated composite plate; Partitioning the second state deformation zone based on the second neutral point to obtain a second region set, and determining a second total rolling force based on the first rolling parameter and the second rolling parameter and the second region set; The second state deformation zone is a rolling deformation zone in a state where the upper roller is in incomplete contact with the upper surface of the corrugated composite plate; A target rolling force during flat roll rolling is determined based on the first total rolling force and the second total rolling force.

2. The method for determining rolling force during flat roll rolling of corrugated composite plate according to claim 1, characterized in that: The partitioning of the first state deformation zone based on the first neutral point to obtain a first region set, and determining a first total rolling force based on the first rolling parameter and the second rolling parameter and the first region set comprises: The first state deformation zone is divided by taking the vertical line where the first neutral point is located as a first dividing line to obtain a first region set, wherein the first region set includes a first complete region and a second complete region; According to the first rolling parameter and the second rolling parameter, the formula is adopted: ； Calculating and obtaining a first complete rolling force of the first complete area; in, , is the first full rolling force, is the contact friction coefficient between the base metal and the lower roll, is the equivalent yield shear stress, is the contact friction coefficient between the composite metal and the upper roll, is the amount of pressure, is the ripple amplitude, is the roller radius, is the horizontal coordinate of any point in the rolling deformation zone, is the thickness of the composite metal layer of the composite plate, is the base metal thickness of the composite plate; According to the first rolling parameter and the second rolling parameter, the formula is adopted: ； calculating and obtaining a second complete rolling force in the second complete area; in, , is the second full rolling force; is the contact arc length, is the post-entry tension; Determining a first neutral point abscissa based on a first boundary condition, the first complete rolling force, and the second complete rolling force; the first boundary condition is that the rolling forces of the first complete region and the second complete region at the first dividing line are equal; Based on the first neutral point abscissa, the first complete rolling force and the second complete rolling force are integrated and solved to obtain a first total rolling force of the deformation zone in the first state.

3. The method for determining rolling force during flat roll rolling of corrugated composite plate according to claim 2, characterized in that: The first total rolling force of the first state deformation zone is obtained by integrating and solving the first complete rolling force and the second complete rolling force based on the first neutral point horizontal coordinate, and comprising: Using the formula: ； Calculating and obtaining a first total rolling force in the deformation zone of the first state; in, is the first total rolling force, is the width of the corrugated composite board, is the horizontal coordinate of the first neutral point.

4. The method for determining rolling force during flat roll rolling of corrugated composite plate according to claim 3, characterized in that: Partitioning the second state deformation zone based on the second neutral point to obtain a second region set, and determining a second total rolling force based on the first rolling parameter and the second rolling parameter and the second region set comprises: Determine the target shape parameter, the abscissa of the first characteristic point and the abscissa of the second characteristic point in the deformation zone of the second state according to the first rolling parameter and the second rolling parameter; the first characteristic point is the intersection point of the corrugated composite plate and the upper roller in the deformation zone of the second state, and the second characteristic point is the trough point of the corrugated composite plate in the deformation zone of the second state; The second state deformation zone is divided by taking the vertical line where the second neutral point is located as the second dividing line, the vertical line where the first characteristic point is located as the third dividing line, and the vertical line where the second characteristic point is located as the fourth dividing line to obtain a second region set, wherein the second region set includes a first incomplete region, a second incomplete region, a third incomplete region, and a fourth incomplete region; Based on the target shape parameter, the abscissa of the first characteristic point, the abscissa of the second characteristic point, the first rolling parameter, and the second rolling parameter, a first incomplete rolling force of the first incomplete region, a second incomplete rolling force of the second incomplete region, a third incomplete rolling force of the third incomplete region, and a fourth incomplete rolling force of the fourth incomplete region are calculated; Determining the second neutral point abscissa according to a fourth boundary condition, the first incomplete rolling force and the second incomplete rolling force; the fourth boundary condition is that the rolling forces of the first incomplete region and the second incomplete region at the second dividing line are equal; Based on the second neutral point horizontal coordinate, the first incomplete rolling force, the second incomplete rolling force, the third incomplete rolling force and the fourth incomplete rolling force are integrated and solved to obtain the second total rolling force of the deformation zone in the second state.

5. The method for determining rolling force during flat roll rolling of corrugated composite plate according to claim 4, characterized in that: The target shape parameters include a first shape parameter, a second shape parameter, a third shape parameter, and a fourth shape parameter; the first incomplete rolling force of the first incomplete area, the second incomplete rolling force of the second incomplete area, the third incomplete rolling force of the third incomplete area, and the fourth incomplete rolling force of the fourth incomplete area are calculated based on the target shape parameters, the first feature point abscissa, the second feature point abscissa, the first rolling parameter, and the second rolling parameter, and include: According to the target shape parameter, the first rolling parameter and the second rolling parameter, the formula is adopted: ； Calculating and obtaining a fourth incomplete rolling force of the fourth incomplete region; in, ; ； ； ； ； is the third shape parameter, is the fourth shape parameter, is the fourth incomplete rolling force; Based on the second boundary condition, the target shape parameter, the second characteristic point abscissa, the first rolling parameter, the second rolling parameter and the fourth incomplete rolling force are calculated using the formula: ； The third incomplete rolling force of the third incomplete region is calculated; the second boundary condition is that the rolling forces of the fourth incomplete region and the third incomplete region are equal at the fourth cutting line; in, ; is the horizontal coordinate of the second feature point, is the third incomplete rolling force, is the first shape parameter, is the second shape parameter; Based on the third boundary condition, the target shape parameter, the first characteristic point abscissa, the first rolling parameter, the second rolling parameter and the third incomplete rolling force, the formula is adopted: ； The second incomplete rolling force of the second incomplete region is calculated; the third boundary condition is that the rolling forces of the third incomplete region and the second incomplete region are equal at the third dividing line; in, ; is the second incomplete rolling force; According to the first rolling parameter and the second rolling parameter, the formula is adopted: ； Calculating and obtaining a first incomplete rolling force of the first incomplete area; in, , is the tension before the outlet, is the first incomplete rolling force.

6. The method for determining rolling force during flat roll rolling of corrugated composite plate according to claim 5, characterized in that: Based on the second neutral point horizontal coordinate, the first incomplete rolling force, the second incomplete rolling force, the third incomplete rolling force and the fourth incomplete rolling force are integrated and solved to obtain the second total rolling force of the deformation zone in the second state, including: Using the formula: ； calculating and obtaining a second total rolling force in the deformation zone of the second state; in, is the second total rolling force, is the horizontal coordinate of the second neutral point.

7. The method for determining rolling force during flat roll rolling of corrugated composite plate according to claim 5, characterized in that: The step of determining the target shape parameter, the first characteristic point horizontal coordinate and the second characteristic point horizontal coordinate of the deformation zone in the second state according to the first rolling parameter and the second rolling parameter comprises: According to the first rolling parameter, the formula is adopted: ； Calculate and obtain the first shape parameter; in, is the number of ripples, >0, is the equivalent radius of the corrugation roller; According to the first rolling parameter and the second rolling parameter, the formula is adopted: ； The second shape parameter is calculated; in, is the thickness of the composite metal layer of the corrugated composite plate, is the base metal thickness of the corrugated composite plate; According to the first rolling parameter, the formula is adopted: ； The third shape parameter is calculated; According to the first rolling parameter and the second rolling parameter, the formula is adopted: ； The fourth shape parameter is calculated; According to the first rolling parameter, the second rolling parameter, the third shape parameter and the fourth shape parameter, the formula is adopted: ； Calculate and obtain the horizontal coordinate of the first feature point; According to the first rolling parameter and the second rolling parameter, the formula is adopted: ； Calculate and obtain the horizontal coordinate of the second feature point; in, is the horizontal coordinate of the first feature point, is the horizontal coordinate of the second feature point.

8. The method for determining rolling force during flat roll rolling of corrugated composite plate according to claim 1, characterized in that: The determining of the target rolling force in the flat roll rolling process based on the first total rolling force and the second total rolling force comprises: The first total rolling force and the second total rolling force are sorted according to a preset rule to obtain a target rolling force; the target rolling force is the first total rolling force and the second total rolling force arranged alternately.

9. The method for determining rolling force during flat roll rolling of corrugated composite plates according to claim 3, characterized in that: Determining the abscissa of the first neutral point based on the first boundary condition, the first complete rolling force, and the second complete rolling force comprises: For the formula: ； Solve and obtain the horizontal coordinate of the first neutral point.

10. A device for determining rolling force during flat roll rolling of a corrugated composite plate, applied to the method for determining rolling force during flat roll rolling of a corrugated composite plate as claimed in any one of claims 1 to 9, characterized in that: include: A second rolling parameter determination module, used to determine a second rolling parameter in a flat roll rolling process; The second rolling parameters include reduction, contact arc length and shear yield stress parameters; The second rolling parameter is calculated from the first rolling parameter during the flat roll rolling process of the corrugated composite plate; A first state deformation zone total rolling force calculation module, used for partitioning the first state deformation zone based on the first neutral point to obtain a first zone set, and determining a first total rolling force based on the first rolling parameter and the second rolling parameter and the first zone set; The first state deformation zone is a rolling deformation zone in a state where the upper roller is in full contact with the upper surface of the corrugated composite plate; A second state deformation zone total rolling force calculation module, which partitions the second state deformation zone based on the second neutral point to obtain a second zone set, and determines a second total rolling force based on the first rolling parameter and the second rolling parameter and the second zone set; The second state deformation zone is a rolling deformation zone in a state where the upper roller is in incomplete contact with the upper surface of the corrugated composite plate; The target rolling force determination module is used to determine the target rolling force in the flat roll rolling process based on the first total rolling force and the second total rolling force.

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