Angle rolling process parameter determination method, device, equipment and readable storage medium

Abstract

An embodiment of the present invention provides a method, device, equipment and readable storage medium for determining process parameters of angle rolling, wherein the method includes: starting from an initial rolling pass, looping the following steps to determine the rolling pass of angle rolling: calculating the maximum steel turning angle under the current rolling pass; calculating the width of the slab after rolling in the current rolling pass based on the maximum steel turning angle, and calculating the first side angle of the slab after rolling in the current rolling pass; when the current rolling pass is an odd number, determining whether to increase the rolling pass based on the relationship between the width of the slab after rolling and the target width; when the current rolling pass is an even number, determining whether to increase the rolling pass based on the relationship between the first side angle and 90 degrees, and when the first side angle is equal to 90 degrees and the width of the slab after rolling is less than the target width, increasing the rolling pass, and ending the loop when the first side angle is equal to 90 degrees and the width of the slab after rolling is greater than or equal to the target width, and determining that the current rolling pass is a rolling pass for angle rolling.

Description

Technical Field

[0001] The present invention relates to the field of rolling technology, and in particular to a method, device, equipment and readable storage medium for determining angle rolling process parameters. Background Art

[0002] With the rapid development of my country's economy and military, the demand for large-sized medium and thick plates is increasing. The thickness of medium and thick plates is mainly controlled by increasing the thickness of the cast billet or using water-cooled ingots. The width of medium and thick plates can be controlled by two main technologies: horizontal rolling (width expansion) + longitudinal rolling and angle rolling + longitudinal rolling.

[0003] Among them, the cross-rolling + longitudinal rolling technology is the main widening process for medium and thick plates. Figure 1 As shown, after the slab is dephosphorized, it is rotated 90 degrees, rolled horizontally to the target width, and then rotated 90 degrees again and rolled longitudinally until completion.

[0004] like Figure 2 As shown, the angle rolling-longitudinal rolling technology is that the slab is fed into the rolling roller at a certain angle to the rolling center line, and the feeding angle is generally 15 to 45 degrees.

[0005] The main purpose of angle rolling is to expand the slab width to the target finished product width. To achieve the target width, it is necessary to continuously adjust the relevant process parameters such as the rolling passes, pass reduction, and steel turning angle of the angle rolling. The work is complicated and currently requires technicians with relevant process production experience to spend a lot of time on repeated calculations, which has a great impact on the production rhythm. In addition, the calculation accuracy also has different errors due to different experiences, which affects the accuracy of the process parameters. Summary of the Invention

[0006] The present invention provides a method for determining angle rolling process parameters to solve the technical problems of low efficiency and low accuracy in determining process parameters in the prior art. The method includes:

[0007] Starting from the initial rolling pass, the following steps are cycled to determine the rolling pass for angle rolling:

[0008] Calculate the maximum steel turning angle under the current rolling pass;

[0009] Calculate the width of the slab after rolling in the current rolling pass according to the maximum steel turning angle, and calculate the first angle of the slab after rolling in the current rolling pass, wherein the first angle is the angle between the long side and the wide side of the slab, and the first angle is the angle of the slab that first contacts the rollers;

[0010] When the current rolling pass is an odd number, whether to increase the rolling pass is determined based on the relationship between the width of the slab after rolling and the target width;

[0011] When the current rolling pass is an even number, determine whether to increase the rolling pass based on the relationship between the first side angle and 90 degrees. When the first side angle is equal to 90 degrees and the width of the slab after rolling is less than the target width, increase the rolling pass. When the first side angle is equal to 90 degrees and the width of the slab after rolling is greater than or equal to the target width, end the cycle and determine that the current rolling pass is an angle rolling pass.

[0012] The present invention also provides a device for determining angle rolling process parameters to solve the technical problems of low efficiency and low accuracy in determining process parameters in the prior art. The device includes:

[0013] A parameter determination module is used to loop the following steps starting from the initial rolling pass to determine the rolling pass of angle rolling, wherein the parameter determination module includes:

[0014] The steel turning angle calculation unit is used to calculate the maximum steel turning angle under the current rolling pass;

[0015] a calculation unit, configured to calculate, based on the maximum steel turning angle, the width of the slab after rolling in the current rolling pass, and calculate a first side angle of the slab after rolling in the current rolling pass, wherein the first side angle is the angle between the long side and the wide side of the slab, and the first side angle is the side angle of the slab that first contacts the rollers;

[0016] A parameter determination unit is used to determine whether to increase the rolling pass when the current rolling pass is an odd number based on the relationship between the width of the slab after rolling and the target width; when the current rolling pass is an even number, determine whether to increase the rolling pass based on the relationship between the first side angle and 90 degrees, and when the first side angle is equal to 90 degrees and the width of the slab after rolling is less than the target width, increase the rolling pass; when the first side angle is equal to 90 degrees and the width of the slab after rolling is greater than or equal to the target width, end the cycle, and determine that the current rolling pass is an angle rolling pass.

[0017] An embodiment of the present invention also provides a computer device, including a memory, a processor, and a computer program stored in the memory and runnable on the processor. When the processor executes the computer program, it implements any of the above-mentioned methods for determining angle rolling process parameters to solve the technical problems of low efficiency and low accuracy in determining process parameters in the prior art.

[0018] An embodiment of the present invention also provides a computer-readable storage medium, which stores a computer program for executing any of the above-mentioned angle rolling process parameter determination methods to solve the technical problems of low efficiency and low accuracy in determining process parameters in the prior art.

[0019] In an embodiment of the present invention, the above-mentioned method for online determination of angle rolling process parameters is provided. Compared with the method of manually calculating angle rolling process parameters in the prior art, the present application can reduce the impact on production rhythm, reduce the complexity of work, and is conducive to improving production efficiency; at the same time, by calculating parameters such as the steel turning angle, the width of the slab after rolling, and the first edge angle online, compared with the method of manually calculating angle rolling process parameters in the prior art, the present application is conducive to improving the calculation accuracy of parameters such as the steel turning angle, the width of the slab after rolling, and the first edge angle, and thus is conducive to accurately determining the rolling passes of angle rolling. Angle rolling can be performed based on the determined rolling passes of angle rolling, providing a basis for obtaining a good plate shape, reducing cutting losses, and improving the yield rate for angle rolling. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The drawings described herein are used to provide a further understanding of the present invention, constitute a part of this application, and do not constitute a limitation of the present invention. In the drawings:

[0021] Figure 1 It is a schematic diagram of the horizontal rolling-longitudinal rolling width expansion process in the prior art;

[0022] Figure 2 It is a schematic diagram of the angle rolling-longitudinal rolling width expansion process in the prior art;

[0023] Figure 3 This is a flow chart of a method for determining angle rolling process parameters provided by an embodiment of the present invention;

[0024] Figure 4 is a schematic diagram of auxiliary dimensions of a slab after rotation provided by an embodiment of the present invention;

[0025] Figure 5 Schematic diagram of rolling width during angle rolling provided by an embodiment of the present invention;

[0026] Figure 6 This is a schematic diagram of an angle rolling process provided by an embodiment of the present invention;

[0027] Figure 7 Schematic diagram of the angle of an angle-rolled steel plate provided by an embodiment of the present invention;

[0028] Figure 8 This is a calculation flow chart of angle rolling provided by an embodiment of the present invention;

[0029] Figure 9 This is a flow chart of a method for determining the angle rolling process parameters provided by an embodiment of the present invention;

[0030] Figure 10 This is a structural block diagram of a computer device provided by an embodiment of the present invention;

[0031] Figure 11 This is a structural block diagram of a device for determining angle rolling process parameters provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the embodiments and the accompanying drawings. Here, the exemplary embodiments of the present invention and their descriptions are used to explain the present invention, but are not intended to limit the present invention.

[0033] In an embodiment of the present invention, a method for determining angle rolling process parameters is provided, such as Figure 3 As shown, the method includes:

[0034] Starting from the initial rolling pass, the following steps are cycled to determine the rolling pass for angle rolling:

[0035] Step 302: Calculate the maximum steel turning angle under the current rolling pass;

[0036] Step 304: Calculating the width of the slab after rolling in the current rolling pass based on the maximum steel turning angle, and calculating the first corner of the slab after rolling in the current rolling pass, wherein the first corner is the angle between the long side and the wide side of the slab, and the first corner is the corner of the slab that first contacts the rollers;

[0037] Step 306: When the current rolling pass is an odd number, determine whether to increase the rolling pass based on the relationship between the width of the slab after rolling and the target width; when the current rolling pass is an even number, determine whether to increase the rolling pass based on the relationship between the first side angle and 90 degrees. When the first side angle is equal to 90 degrees and the width of the slab after rolling is less than the target width, increase the rolling pass. When the first side angle is equal to 90 degrees and the width of the slab after rolling is greater than or equal to the target width, end the loop and determine that the current rolling pass is an angle rolling pass.

[0038] Depend on Figure 3 As can be seen from the process shown, in an embodiment of the present invention, the above-mentioned method for determining the angle rolling process parameters online is provided. Compared with the method of manually calculating the angle rolling process parameters in the prior art, the present application can reduce the impact on the production rhythm, reduce the complexity of work, and is conducive to improving production efficiency; at the same time, by calculating the steel turning angle, the width of the slab after rolling, the first edge angle and other parameters online, compared with the method of manually calculating the angle rolling process parameters in the prior art, the present application is conducive to improving the calculation accuracy of the steel turning angle, the width of the slab after rolling, the first edge angle and other parameters, and thus is conducive to accurately determining the rolling passes of the angle rolling, providing a basis for obtaining a good plate shape, reducing cutting losses, and improving the yield rate for angle rolling.

[0039] In specific implementation, in order to calculate the width of the slab after the current rolling pass in real time online, this application proposes to first calculate the relevant auxiliary parameters. For example, first calculate the auxiliary parameters before the current rolling pass:

[0040] The auxiliary parameters before the current rolling pass include β k , δ k 、 as well as like Figure 4 As shown, α k is the steel turning angle, β k is the angle between the wide side of the slab and the axis of the roll, is the first angle between the long side and the wide side of the slab. This first angle is the first angle of the slab that contacts the roller. is the second angle between the long side and the wide side of the slab, is the projection of the first diagonal line of the slab on the rolling line, where the first diagonal line intersects with the first corner. is the projection of the second diagonal of the slab on the rolling line, Greater than is the projection of the first diagonal line of the slab on the roller axis, is the projection of the second diagonal of the slab on the roller axis, Less than k is the current rolling pass, W k L is the width length of the slab before rolling in the current rolling pass. k is the long side length of the slab before rolling in the current rolling pass. Figure 4 As shown, is the steel width for angle rolling. When the calculated steel width is less than the maximum rolling width of the rolling mill, the slab can pass through the rolling mill for angle rolling; otherwise, the steel turning angle of the slab needs to be readjusted. Figure 5 As shown, δ k It is the angle between the width side length of the slab (abbreviated as: wide side) and the rolling line.

[0041] Before angle rolling, the slab turning angle is given as α k , by α k Calculating β k ,have:

[0042]

[0043] When the current rolling pass is the first rolling pass, The slab before rolling is rectangular.

[0044] Before the slab enters the rolling mill, the projections of its two diagonals in the rolling line direction and the roll axis direction are:

[0045]

[0046]

[0047] in,

[0048]

[0049]

[0050] In the specific implementation, during the angle rolling process, the contact width between the slab and the roller increases continuously. When the contact width no longer changes, it is the rolling width. like Figure 5 The stripe filling portion shown, the rolling width It plays an important role in angle rolling process setting and rolling force calculation.

[0051] Before the slab enters the roller for deformation, the rolling width is After rolling deformation, the rolling width is Then we have:

[0052]

[0053] δ k =90-β k (7)

[0054]

[0055] Wherein, Δw is the self-heating width expansion of the slab during rolling. Δw can be determined using relevant theories and models in the prior art, and will not be described in detail in this application.

[0056] Secondly, calculate the auxiliary parameters after the current rolling pass, such as Figure 6 As shown in the figure, after the slab is angle rolled, it becomes a parallelogram, and the projection of the first diagonal line of the slab on the rolling line is The projection of the second diagonal of the slab on the rolling line is The projection of the first diagonal line on the roller axis is The projection of the second diagonal line on the roller axis is The first angle between the long side and the wide side of the slab is The second angle between the long side and the wide side of the slab is The length of the first diagonal is l 1_dgn′ , the length of the second diagonal is l 2_dgn′ ; The angle between the two diagonals is θ k′ .

[0057] According to the calculation results of the natural width of the slab, the projections of the two diagonal lines of the slab on the roller axis can be obtained. for:

[0058]

[0059]

[0060] According to the principle of volume invariance, the projections of the two diagonal lines on the rolling line after the slab angle rolling deformation are obtained. for:

[0061]

[0062]

[0063] in, H k is the thickness of the slab before rolling in the current rolling pass, H k′ is the thickness of the slab after rolling in the current rolling pass, which can be calculated using the existing rolling secondary model. k′ .

[0064] According to the Pythagorean theorem of triangles, we can get the lengths of the two diagonals of a parallelogram: 1_dgn′ 、l 2_dgn′ They are:

[0065]

[0066]

[0067] like Figure 7 As shown, the angle θ between the two diagonals of the deformed slab is k′ To solve the problem, use the rolling center line as an auxiliary line and divide the angle into two angles θ1 k′ and θ2 k′ , according to the definition of inverse trigonometric functions:

[0068]

[0069]

[0070] The angle θ between the two diagonals of the slab after angle rolling deformation is k′ for:

[0071] θ k′ =θ1 k′ +θ2 k′ (17)

[0072] According to the parallelogram side length calculation formula, calculate the long side length L of the slab after angle rolling deformation k′ , wide side length W k′ They are:

[0073]

[0074]

[0075] The above calculations have obtained the parameters of the long side length and wide side length of the slab after angle rolling deformation, the length of the two diagonals, and the angle between the two diagonals. Based on the above parameters, the first angle between the long side and the wide side of the slab after rolling deformation can be obtained. and the second angle To calculate like Figure 7 As shown, the two diagonal lines of the slab are used as auxiliary lines, and the angle Divide into two angles, and then calculate them separately according to the cosine theorem. The specific calculation formula is as follows:

[0076]

[0077]

[0078]

[0079]

[0080]

[0081]

[0082] In specific implementation, the maximum steel turning angle under the current rolling pass is calculated by the following formula:

[0083] α max k =arcsin(w roll_max / l _dgn )-arctan(W k / L k ) (26)

[0084] Among them, α max k is the maximum steel turning angle under the current rolling pass; k is the current rolling pass; w roll_max is the maximum rolling width of the rolling mill; W k L is the width length of the slab before rolling in the current rolling pass; k is the long side length of the slab before rolling in the current rolling pass; l _dgn is the length of the second diagonal line of the slab, where the second diagonal line is the diagonal line of the slab that does not intersect with the first corner.

[0085] During specific implementation, after the width and the first side angle of the slab after the current rolling pass are calculated, the angle rolling process parameters can be determined accurately and quickly.

[0086] For example, when the current rolling pass is an odd number, the following steps can be used to determine whether to increase the rolling pass based on the relationship between the width of the slab after rolling and the target width:

[0087] When the width of the slab after rolling is less than the target width, increasing the number of rolling passes;

[0088] When the width of the slab after rolling is greater than or equal to the target width, the maximum steel turning angle is reduced by a preset angle, and the following steps are repeated:

[0089] Calculate the width of the slab after rolling in the current rolling pass according to the reduced steel turning angle;

[0090] When the width of the slab after rolling is smaller than the target width, increasing the number of rolling passes;

[0091] When the width of the slab after rolling is greater than or equal to the target width, the reduced steel turning angle is further reduced by a preset angle.

[0092] For another example, when the current rolling pass is an even number, whether to increase the rolling pass can be determined according to the relationship between the first side angle and 90 degrees through the following steps:

[0093] When the first side angle is greater than 90 degrees, the steel turning angle of the previous rolling pass is reduced by a preset angle, and the previous rolling pass is used as the current rolling pass;

[0094] When the first side angle is less than 90 degrees, the maximum steel turning angle is reduced by a preset angle, and the following steps are repeated:

[0095] Calculating the width and first angle of the slab after rolling in the current rolling pass;

[0096] When the first angle is greater than 90 degrees, the steel turning angle of the previous rolling pass is reduced by a preset angle, and the previous rolling pass is used as the current rolling pass; when the first angle is less than 90 degrees, the reduced steel turning angle is further reduced by a preset angle; when the first angle is equal to 90 degrees and the width of the slab after rolling is less than the target width, the rolling pass is increased, and when the first angle is equal to 90 degrees and the width of the slab after rolling is greater than or equal to the target width, the cycle is ended, and the current rolling pass is determined to be the angle rolling pass.

[0097] Specifically, such as Figure 8 As shown, the parameters before and after each angle rolling can be calculated through the following process:

[0098] Step 1: Clearly define known conditions, blank parameters: slab length, width, thickness (i.e. when k=1, L k is the slab length before rolling, W k H is the width of the slab before rolling,k is the thickness of the slab before rolling), the angle between the long side and the wide side (i.e. when k=1 ). Angle rolling process parameters: rolling temperature, rolling speed, reduction Δh, steel turning angle α k wait.

[0099] Step 2: Calculate the auxiliary parameters before angle rolling; calculate the angle β according to formula (1) k , calculate the angle δ according to formula (7) k ; Calculate according to formulas (2) to (5) ( It must be smaller than the maximum rolling width of the rolling mill. Otherwise, adjust the reduction and steel turning angle and go to step 1).

[0100] Step 3: Calculate the rolling width of the angle-rolled slab before and after deformation according to formulas (6) to (8) and

[0101] Step 4: Calculate the auxiliary parameters after angle rolling according to formulas (9) to (10): auxiliary width of the slab Calculate the auxiliary length of the slab after angle rolling according to formulas (11) to (12): ( It must be smaller than the maximum rolling width of the rolling mill. Otherwise, adjust the reduction and steel turning angle and go to step 1).

[0102] Step 5: Calculate the diagonal length l of the slab after angle rolling according to formulas (13) to (14): 1_dgn′ 、l 2_dgn′ Calculate the diagonal angle θ of the slab after angle rolling according to formulas (15) to (17): k′ .

[0103] Step 6: Calculate the size of the slab after angle rolling according to formulas (18) to (19): long side L k′ 、Wide side k′ ; Calculate the angle between the long side and the wide side of the slab after angle rolling deformation according to formulas (20) to (25)

[0104] Through the above calculation, the slab size before the next angle rolling deformation is obtained: L k+1 =L k′ 、W k+1 =W k′ 、H k+1 =H k′ And so on. Combined with the new angle rolling process parameters: reduction Δh, steel turning angle, etc., repeat the above steps (1) to (8) and iteratively calculate the slab size before and after each angle rolling deformation.

[0105] In specific implementation, the slab size before and after each angle rolling deformation can be calculated. In order to avoid technicians spending a lot of time repeatedly calculating process parameters, the production efficiency of actual applications can be improved. Figure 9 As shown, the above-mentioned online angle rolling process parameter determination method can be implemented by the following steps:

[0106] Step 1: Clearly define known conditions before angle rolling, including billet parameters: slab length L k 、Width W k 、Thick H k , the angle between the long side and the wide side (Angle rolling 1st pass The initial current angle rolling pass number k=1, and the initial total angle rolling pass number is 2.

[0107] Step 2: The reduction is an important factor affecting the width of angle rolling. The greater the reduction, the greater the width. However, due to the limitations of process and equipment conditions such as rolling force and rolling torque, the reduction must be set within a reasonable range. In actual production, the secondary rolling model calculates the maximum reduction per pass according to process requirements. The main purpose of angle rolling is to widen the slab. The larger the slab turning angle, the greater the width expansion. However, due to the maximum rolling width of the rolling mill, the turning angle cannot be increased indefinitely. According to the maximum rolling width of the rolling mill, the maximum turning angle α of each pass is calculated by formula (26): max k ; Set the direction of job transfer.

[0108] Step 3: Set the steel turning angle;

[0109] Step 4: By calculating the above formulas (1) to (25), the slab size and angle rolling process parameters before and after the current rolling pass are obtained, that is, and W k′ .

[0110] Step 5: Based on the calculation results, adjust the angle rolling process parameters of each rolling pass. The judgment criteria are as follows:

[0111] If the current rolling pass k is an odd number and the slab width W after angle rolling is k′ If it is greater than or equal to the target width, go to step 6;

[0112] If the current rolling pass k is an odd number and the slab width W after angle rolling is k ' is less than the target width, go to step 7;

[0113] If the current rolling pass k is an even number, and the first angle after angle rolling Δ is the angle after rolling If the angle is allowed to fluctuate, go to step 6;

[0114] If the current rolling pass k is an even number, and the first angle after angle rolling Then go to step 8;

[0115] If the current rolling pass k is an even number, (Right now Almost equal to 90 degrees), and when the slab width W after angle rolling k′ < target width, go to step 9;

[0116] If the current rolling pass k is an even number, 90+Δ≦φ1'≦90+Δ; and the slab width after angle rolling W k′ ≧Target width, i.e. slab width W k′ If the angle rolling process parameters are determined based on the product shape and plane shape, the procedure for determining the angle rolling process parameters is completed.

[0117] Step 6: Reduce the steel rolling angle by a preset angle (for example, the preset angle is 0.1 degrees) and go to step 3 to recalculate the slab size L after k-pass angle rolling. k′ 、W k′ and

[0118] Step 7: Increase the number of rolling passes, k+1 is the current rolling pass, change the steel turning direction, and go to step 3. The slab is transformed into a parallelogram after k passes of angle rolling. It is necessary to change the steel turning direction and angle roll it into a rectangle again to obtain a good plate shape, reduce cutting loss, and improve the yield rate. It is necessary to go to step 3 for calculation after the k+1th angle rolling.

[0119] Step 8: Reduce the steel turning angle of the k-1 pass angle rolling by the preset angle, set k-1 as the current rolling pass, keep the steel turning direction, and go to step 3 to recalculate the slab size L after the k-1 pass angle rolling. k′ 、W k′ and

[0120] Step 9: Add an angle rolling pass, k+1 is the current rolling pass, keep the steel turning direction, and go to step 3 to perform the angle rolling calculation for the next pass (k+1).

[0121] In this embodiment, a computer device is provided, such as Figure 10 As shown, it includes a memory 1002, a processor 1004 and a computer program stored in the memory and executable on the processor. When the processor executes the computer program, any of the above-mentioned methods for determining angle rolling process parameters is implemented.

[0122] In this embodiment, a computer-readable storage medium is provided, wherein the computer-readable storage medium stores a computer program for executing any of the above-mentioned methods for determining angle rolling process parameters.

[0123] Based on the same inventive concept, an angle rolling process parameter determination device is also provided in an embodiment of the present invention, as described in the following embodiment. Since the principle of solving the problem by the angle rolling process parameter determination device is similar to that of the angle rolling process parameter determination method, the implementation of the angle rolling process parameter determination device can refer to the implementation of the angle rolling process parameter determination method, and the repeated parts will not be repeated. As used below, the term "unit" or "module" can be a combination of software and / or hardware that implements predetermined functions. Although the device described in the following embodiments is preferably implemented in software, the implementation of hardware, or a combination of software and hardware, is also possible and conceived.

[0124] Figure 11 This is a structural block diagram of a device for determining angle rolling process parameters according to an embodiment of the present invention. Figure 11 As shown, the device includes:

[0125] A parameter determination module is used to loop the following steps starting from the initial rolling pass to determine the rolling pass of angle rolling, wherein the parameter determination module includes:

[0126] The steel turning angle calculation unit 1102 is used to calculate the maximum steel turning angle under the current rolling pass;

[0127] a calculation unit 1104 for calculating the width of the slab after rolling in the current rolling pass based on the maximum steel turning angle, and calculating the first side angle of the slab after rolling in the current rolling pass, wherein the first side angle is the angle between the long side and the wide side of the slab, and the first side angle is the side angle of the slab that first contacts the rollers;

[0128] Parameter determination unit 1106 is used to determine whether to increase the rolling pass when the current rolling pass is an odd number based on the relationship between the width of the slab after rolling and the target width; when the current rolling pass is an even number, determine whether to increase the rolling pass based on the relationship between the first side angle and 90 degrees, and when the first side angle is equal to 90 degrees and the width of the slab after rolling is less than the target width, increase the rolling pass; when the first side angle is equal to 90 degrees and the width of the slab after rolling is greater than or equal to the target width, end the loop and determine that the current rolling pass is an angle rolling pass.

[0129] In one embodiment, the steel turning angle calculation unit 1102 calculates the maximum steel turning angle in the current rolling pass using the following formula:

[0130] α max k =arcsin(w roll_max / l _dgn )-arctan(W k / L k )

[0131] Among them, α max k is the maximum steel turning angle under the current rolling pass; k is the current rolling pass; w roll_max is the maximum rolling width of the rolling mill; W k L is the width length of the slab before rolling in the current rolling pass; k is the long side length of the slab before rolling in the current rolling pass; l _dgn is the length of the second diagonal line of the slab, where the second diagonal line is the diagonal line of the slab that does not intersect with the first corner.

[0132] In one embodiment, the parameter determination unit is specifically configured to increase the rolling pass when the current rolling pass is an odd number and the width of the slab after rolling is less than the target width;

[0133] When the width of the slab after rolling is greater than or equal to the target width, the maximum steel turning angle is reduced by a preset angle, and the following steps are repeated:

[0134] Calculate the width of the slab after rolling in the current rolling pass according to the reduced steel turning angle;

[0135] When the width of the slab after rolling is smaller than the target width, increasing the number of rolling passes;

[0136] When the width of the slab after rolling is greater than or equal to the target width, the reduced steel turning angle is further reduced by a preset angle.

[0137] In one embodiment, the parameter determination unit is further configured to, when the current rolling pass is an even number and the first side angle is greater than 90 degrees, reduce the steel turning angle of the previous rolling pass by a preset angle and use the previous rolling pass as the current rolling pass;

[0138] When the first side angle is less than 90 degrees, the maximum steel turning angle is reduced by a preset angle, and the following steps are repeated:

[0139] Calculating the width and first angle of the slab after rolling in the current rolling pass;

[0140] When the first angle is greater than 90 degrees, the steel turning angle of the previous rolling pass is reduced by a preset angle, and the previous rolling pass is used as the current rolling pass; when the first angle is less than 90 degrees, the reduced steel turning angle is further reduced by a preset angle; when the first angle is equal to 90 degrees and the width of the slab after rolling is less than the target width, the rolling pass is increased, and when the first angle is equal to 90 degrees and the width of the slab after rolling is greater than or equal to the target width, the cycle is ended, and the current rolling pass is determined to be the angle rolling pass.

[0141] In one embodiment, the calculation unit calculates the first edge angle of the slab after rolling in the current rolling pass by the following formula:

[0142]

[0143] in, is the first corner of the slab after rolling in the current rolling pass; k is the current rolling pass; is the long side length of the slab after rolling in the current rolling pass, W k′ is the wide side length of the slab after rolling in the current rolling pass, θ k′ is the angle between the two diagonals of the slab after rolling in the current rolling pass, is the length of the first diagonal line of the slab after rolling in the current rolling pass, where the first diagonal line intersects with the first corner, l 2_dgn′ is the length of the second diagonal of the slab after rolling in the current rolling pass, is the projection of the first diagonal line of the slab on the rolling line after the current rolling pass, is the projection of the second diagonal line of the slab on the rolling line after the current rolling pass, is the projection of the first diagonal line of the slab on the rolling line before the current rolling pass, is the projection of the second diagonal line of the slab on the rolling line before the current rolling pass, H k is the thickness of the slab before rolling in the current rolling pass, H k′ is the thickness of the slab after rolling in the current rolling pass, is the rolling width before the current rolling pass, is the rolling width after the current rolling pass, Δw is the slab rolling autothermal width expansion; is the projection of the first diagonal line of the slab on the roller axis after the current rolling pass, is the projection of the second diagonal line of the slab on the roller axis after the current rolling pass, is the projection of the first diagonal line of the slab on the roller axis before rolling in the current rolling pass, is the projection of the second diagonal line of the slab on the roller axis before rolling in the current rolling pass, W k L is the width length of the slab before rolling in the current rolling pass.k is the long side length of the slab before rolling in the current rolling pass, α k is the steel turning angle used for the current rolling pass, is the first edge angle of the slab before rolling in the current rolling pass, δ k is the angle between the wide side of the slab and the rolling line before the current rolling pass, δ k =90-β k .

[0144] In another embodiment, a software is provided, which is used to execute the technical solutions described in the above embodiments and preferred implementations.

[0145] In another embodiment, a storage medium is provided, in which the above software is stored. The storage medium includes but is not limited to: a CD, a floppy disk, a hard disk, a rewritable memory, etc.

[0146] The embodiments of the present invention achieve the following technical effects: providing the above-mentioned method for determining the angle rolling process parameters online. Compared with the method of manually calculating the angle rolling process parameters in the prior art, the present application can reduce the impact on the production rhythm, reduce the complexity of work, and is conducive to improving production efficiency; at the same time, by calculating the steel turning angle, the width of the slab after rolling, the first edge angle and other parameters online, compared with the method of manually calculating the angle rolling process parameters in the prior art, the present application is conducive to improving the calculation accuracy of the steel turning angle, the width of the slab after rolling, the first edge angle and other parameters, and thus is conducive to accurately determining the rolling passes of the angle rolling, providing a basis for obtaining a good plate shape, reducing cutting losses, and improving the yield rate for angle rolling.

[0147] Obviously, those skilled in the art should understand that the various modules or steps of the above-mentioned embodiments of the present invention can be implemented using a general-purpose computing device, they can be concentrated on a single computing device, or distributed across a network composed of multiple computing devices. Alternatively, they can be implemented using program code executable by the computing device, so that they can be stored in a storage device and executed by the computing device. In some cases, the steps shown or described can be performed in a different order than herein, or they can be made into separate integrated circuit modules, or multiple modules or steps can be made into a single integrated circuit module for implementation. Thus, the embodiments of the present invention are not limited to any specific combination of hardware and software.

[0148] The foregoing description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that various modifications and variations of the present invention are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention are intended to be within the scope of protection of the present invention.

Claims

1. A method for determining angle rolling process parameters, characterized in that: include: Starting from the initial rolling pass, the following steps are cycled to determine the rolling pass for angle rolling: Calculate the maximum steel turning angle under the current rolling pass; Calculate the width of the slab after rolling in the current rolling pass according to the maximum steel turning angle, and calculate the first angle of the slab after rolling in the current rolling pass, wherein the first angle is the angle between the long side and the wide side of the slab, and the first angle is the angle of the slab that first contacts the rollers; When the current rolling pass is an odd number, whether to increase the rolling pass is determined based on the relationship between the width of the slab after rolling and the target width; When the current rolling pass is an even number, determine whether to increase the rolling pass based on the relationship between the first side angle and 90 degrees. When the first side angle is equal to 90 degrees and the width of the slab after rolling is less than the target width, increase the rolling pass. When the first side angle is equal to 90 degrees and the width of the slab after rolling is greater than or equal to the target width, end the cycle and determine that the current rolling pass is an angle rolling pass.

2. The method for determining angle rolling process parameters according to claim 1, wherein: The maximum steel turning angle under the current rolling pass is calculated by the following formula: <h2 style=";text-align:left;direction:ltr">α<h2 style=";text-align:left;direction:ltr"> max <h2 style=";text-align:left;direction:ltr"> k <h2 style=";text-align:left;direction:ltr"> (arcsin(w<h2 style=";text-align:left;direction:ltr"> roll_max <h2 style=";text-align:left;direction:ltr"> / l<h2 style=";text-align:left;direction:ltr"> _dgn <h2 style=";text-align:left;direction:ltr"> )-arctan(W<h2 style=";text-align:left;direction:ltr"> k <h2 style=";text-align:left;direction:ltr"> / L<h2 style=";text-align:left;direction:ltr"> k <h2 style=";text-align:left;direction:ltr"> ) Among them, α max k is the maximum steel turning angle under the current rolling pass; k is the current rolling pass; w roll_max is the maximum rolling width of the rolling mill; W k L is the width length of the slab before rolling in the current rolling pass; k is the long side length of the slab before rolling in the current rolling pass; l _dgn is the length of the second diagonal line of the slab, where the second diagonal line is the diagonal line of the slab that does not intersect with the first corner.

3. The method for determining angle rolling process parameters according to claim 1, wherein: When the current rolling pass is an odd number, whether to increase the rolling pass is determined based on the relationship between the width of the slab after rolling and the target width, including: When the width of the slab after rolling is less than the target width, increasing the number of rolling passes; When the width of the slab after rolling is greater than or equal to the target width, the maximum steel turning angle is reduced by a preset angle, and the following steps are repeated: Calculate the width of the slab after rolling in the current rolling pass according to the reduced steel turning angle; When the width of the slab after rolling is smaller than the target width, increasing the number of rolling passes; When the width of the slab after rolling is greater than or equal to the target width, the reduced steel turning angle is further reduced by a preset angle.

4. The method for determining angle rolling process parameters according to claim 1, wherein: When the current rolling pass is an even number, determining whether to increase the rolling pass according to the relationship between the first side angle and 90 degrees includes: When the first side angle is greater than 90 degrees, the steel turning angle of the previous rolling pass is reduced by a preset angle, and the previous rolling pass is used as the current rolling pass; When the first side angle is less than 90 degrees, the maximum steel turning angle is reduced by a preset angle, and the following steps are repeated: Calculating the width and first angle of the slab after rolling in the current rolling pass; When the first angle is greater than 90 degrees, the steel turning angle of the previous rolling pass is reduced by a preset angle, and the previous rolling pass is used as the current rolling pass; when the first angle is less than 90 degrees, the reduced steel turning angle is further reduced by a preset angle; when the first angle is equal to 90 degrees and the width of the slab after rolling is less than the target width, the rolling pass is increased, and when the first angle is equal to 90 degrees and the width of the slab after rolling is greater than or equal to the target width, the cycle is ended, and the current rolling pass is determined to be the angle rolling pass.

5. The method for determining angle rolling process parameters according to any one of claims 1 to 4, characterized in that: The first edge angle of the slab after rolling in the current rolling pass is calculated using the following formula: in, is the first corner of the slab after rolling in the current rolling pass; k is the current rolling pass; L k′ is the long side length of the slab after rolling in the current rolling pass, W k′ is the wide side length of the slab after rolling in the current rolling pass, θ k′ is the angle between the two diagonals of the slab after rolling in the current rolling pass, θ k′ =θ1 k′ +θ2 k′ , l 1_dgn′ is the length of the first diagonal line of the slab after rolling in the current rolling pass, where the first diagonal line intersects with the first corner, l 2_dgn′ is the length of the second diagonal of the slab after rolling in the current rolling pass, is the projection of the first diagonal line of the slab on the rolling line after the current rolling pass, is the projection of the second diagonal line of the slab on the rolling line after the current rolling pass, is the projection of the first diagonal line of the slab on the rolling line before the current rolling pass, is the projection of the second diagonal line of the slab on the rolling line before the current rolling pass, H k is the thickness of the slab before rolling in the current rolling pass, H k′ is the thickness of the slab after rolling in the current rolling pass, is the rolling width before the current rolling pass, is the rolling width after the current rolling pass, Δw is the slab rolling autothermal width expansion; is the projection of the first diagonal line of the slab on the roller axis after the current rolling pass, is the projection of the second diagonal line of the slab on the roller axis after the current rolling pass, is the projection of the first diagonal line of the slab on the roller axis before rolling in the current rolling pass, is the projection of the second diagonal line of the slab on the roller axis before rolling in the current rolling pass, W k L is the width length of the slab before rolling in the current rolling pass. k is the long side length of the slab before rolling in the current rolling pass, α k is the steel turning angle used for the current rolling pass, is the first edge angle of the slab before rolling in the current rolling pass, δ k is the angle between the wide side of the slab and the rolling line before the current rolling pass, δ k =90-β k .

6. A device for determining angle rolling process parameters, characterized in that: include: A parameter determination module is used to loop the following steps starting from the initial rolling pass to determine the rolling pass of angle rolling, wherein the parameter determination module includes: The steel turning angle calculation unit is used to calculate the maximum steel turning angle under the current rolling pass; a calculation unit, configured to calculate, based on the maximum steel turning angle, the width of the slab after rolling in the current rolling pass, and calculate a first side angle of the slab after rolling in the current rolling pass, wherein the first side angle is the angle between the long side and the wide side of the slab, and the first side angle is the side angle of the slab that first contacts the rollers; A parameter determination unit is used to determine whether to increase the rolling pass when the current rolling pass is an odd number based on the relationship between the width of the slab after rolling and the target width; when the current rolling pass is an even number, determine whether to increase the rolling pass based on the relationship between the first side angle and 90 degrees, and when the first side angle is equal to 90 degrees and the width of the slab after rolling is less than the target width, increase the rolling pass; when the first side angle is equal to 90 degrees and the width of the slab after rolling is greater than or equal to the target width, end the cycle, and determine that the current rolling pass is an angle rolling pass.

7. The device for determining angle rolling process parameters according to claim 6, characterized in that: The steel turning angle calculation unit calculates the maximum steel turning angle under the current rolling pass by the following formula: <h2 style=";text-align:left;direction:ltr">α<h2 style=";text-align:left;direction:ltr"> max <h2 style=";text-align:left;direction:ltr"> k <h2 style=";text-align:left;direction:ltr"> (arcsin(w<h2 style=";text-align:left;direction:ltr"> roll_max <h2 style=";text-align:left;direction:ltr"> / l<h2 style=";text-align:left;direction:ltr"> _dgn <h2 style=";text-align:left;direction:ltr"> )-arctan(W<h2 style=";text-align:left;direction:ltr"> k <h2 style=";text-align:left;direction:ltr"> / L<h2 style=";text-align:left;direction:ltr"> k <h2 style=";text-align:left;direction:ltr"> ) Among them, α max k is the maximum steel turning angle under the current rolling pass; k is the current rolling pass; w roll_max is the maximum rolling width of the rolling mill; W k L is the width length of the slab before rolling in the current rolling pass; k is the long side length of the slab before rolling in the current rolling pass; l _dgn is the length of the second diagonal line of the slab, where the second diagonal line is the diagonal line of the slab that does not intersect with the first corner.

8. The device for determining angle rolling process parameters according to claim 6, wherein: The parameter determination unit is specifically configured to increase the rolling pass when the current rolling pass is an odd number and the width of the slab after rolling is less than the target width; When the width of the slab after rolling is greater than or equal to the target width, the maximum steel turning angle is reduced by a preset angle, and the following steps are repeated: Calculate the width of the slab after rolling in the current rolling pass according to the reduced steel turning angle; When the width of the slab after rolling is smaller than the target width, increasing the number of rolling passes; When the width of the slab after rolling is greater than or equal to the target width, the reduced steel turning angle is further reduced by a preset angle.

9. The device for determining angle rolling process parameters according to claim 6, wherein: The parameter determination unit is further configured to, when the current rolling pass is an even number and the first side angle is greater than 90 degrees, reduce the steel turning angle of the previous rolling pass by a preset angle and use the previous rolling pass as the current rolling pass; When the first side angle is less than 90 degrees, the maximum steel turning angle is reduced by a preset angle, and the following steps are repeated: Calculating the width and first angle of the slab after rolling in the current rolling pass; When the first angle is greater than 90 degrees, the steel turning angle of the previous rolling pass is reduced by a preset angle, and the previous rolling pass is used as the current rolling pass; when the first angle is less than 90 degrees, the reduced steel turning angle is further reduced by a preset angle; when the first angle is equal to 90 degrees and the width of the slab after rolling is less than the target width, the rolling pass is increased, and when the first angle is equal to 90 degrees and the width of the slab after rolling is greater than or equal to the target width, the cycle is ended, and the current rolling pass is determined to be the angle rolling pass.

10. The device for determining angle rolling process parameters according to any one of claims 6 to 9, characterized in that: The calculation unit calculates the first edge angle of the slab after rolling in the current rolling pass by the following formula: in, is the first corner of the slab after rolling in the current rolling pass; k is the current rolling pass; L k′ is the long side length of the slab after rolling in the current rolling pass, W k′ is the wide side length of the slab after rolling in the current rolling pass, θ k′ is the angle between the two diagonals of the slab after rolling in the current rolling pass, θ k′ =θ1 k′ +θ2 k′ , l 1_dgn′ is the length of the first diagonal line of the slab after rolling in the current rolling pass, where the first diagonal line intersects with the first corner, l 2_dgn′ is the length of the second diagonal of the slab after rolling in the current rolling pass, is the projection of the first diagonal line of the slab on the rolling line after the current rolling pass, is the projection of the second diagonal line of the slab on the rolling line after the current rolling pass, is the projection of the first diagonal line of the slab on the rolling line before the current rolling pass, is the projection of the second diagonal line of the slab on the rolling line before the current rolling pass, H k is the thickness of the slab before rolling in the current rolling pass, H k′ is the thickness of the slab after rolling in the current rolling pass, is the rolling width before the current rolling pass, is the rolling width after the current rolling pass, Δw is the slab rolling autothermal width expansion; is the projection of the first diagonal line of the slab on the roller axis after the current rolling pass, is the projection of the second diagonal line of the slab on the roller axis after the current rolling pass, is the projection of the first diagonal line of the slab on the roller axis before rolling in the current rolling pass, is the projection of the second diagonal line of the slab on the roller axis before rolling in the current rolling pass, W k L is the width length of the slab before rolling in the current rolling pass. k is the long side length of the slab before rolling in the current rolling pass, α k is the steel turning angle used for the current rolling pass, is the first edge angle of the slab before rolling in the current rolling pass, δ k is the angle between the wide side of the slab and the rolling line before the current rolling pass, δ k =90-β k .

11. A computer device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein: When the processor executes the computer program, the method for determining angle rolling process parameters according to any one of claims 1 to 5 is implemented.

12. A computer-readable storage medium, characterized in that The computer-readable storage medium stores a computer program for executing the angle rolling process parameter determination method according to any one of claims 1 to 5.

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