Design Method, Device, Medium and Electronic Equipment for Work Roll Profile

Abstract

The present application relates to the technical field of roll profile design, and discloses a design method, device, medium and electronic device for a work roll profile. The method includes: obtaining a strip steel rolled by a rolling mill; obtaining the plate shape meter data of the strip steel and the configuration data of the rolling mill; determining the first strip steel average convexity of the strip steel under each width condition according to the plate shape meter data; establishing a simulation model based on the configuration data of the rolling mill; obtaining the work roll profile convexity of the simulation model based on the simulation model, and determining the second strip steel average convexity of the strip steel under each width condition; determining the roll profile convexity values of each node of the work roll based on the work roll profile convexity, the first strip steel average convexity and the second strip steel average convexity; and determining the work roll profile curve based on the roll profile convexity values of each node of the work roll. The technical solution proposed by the present application can simultaneously control the double-edge wave shape defect and the middle wave shape defect occurring in the rolling process.

Description

Technical Field

[0001] This application relates to the technical field of roll profile design, and discloses a design method, device, medium and electronic device for a work roll profile. Background Art

[0002] Cold-rolled high-strength steel is an important product in the rolling of strip steel in the iron and steel industry. Due to its good tissue properties, it is widely used in the fields of lightweight automobile manufacturing, aerospace, household appliance production, etc. With the continuous expansion of the types of rolled products, there are a wide variety of strip steel specifications and materials. As the proportion of high-strength steel rolled products gradually increases, higher requirements are put forward for the shape control of the rolling mill unit. During the rolling of high-strength steel and soft-specification strip steel, serious double-edge wave shape defects and middle wave defects often occur, resulting in product downgrading and greatly affecting the economic benefits of the production line. Based on this, how to design a work roll profile so that the work roll obtained according to this profile can simultaneously control the double-edge wave shape defects that occur during the rolling of high-strength steel and the middle wave shape defects that occur during the rolling of soft-specification strip steel is an urgent problem to be solved at present. Summary of the Invention

[0003] This application relates to the technical field of roll profile design, and discloses a design method, device, medium and electronic device for a work roll profile. It can reduce to a certain extent the double-edge wave shape defects that occur during the rolling of high-strength steel and the middle wave shape defects that occur during the rolling of soft-specification strip steel.

[0004] Other features and advantages of this application will become apparent through the following detailed description, or be learned in part through the practice of this application.

[0005] According to the first aspect of the embodiments of this application, a design method for a work roll profile is provided. The method includes: obtaining the strip steel rolled by the rolling mill; obtaining the plate shape meter data of the strip steel and the configuration data of the rolling mill, where the configuration data includes dimension parameters and rolling process parameters; determining the first average convexity of the strip steel under each width condition according to the plate shape meter data; establishing a simulation model based on the configuration data of the rolling mill, where the simulation model is used to simulate the actual rolling mill and simulate the strip steel contour shape; obtaining the work roll profile convexity of the simulation model based on the simulation model, and determining the second average convexity of the strip steel under each width condition; determining the roll profile convexity values of each node of the work roll based on the work roll profile convexity, the first average convexity of the strip steel, and the second average convexity of the strip steel; and determining the work roll profile curve based on the roll profile convexity values of each node of the work roll.

[0006] In one embodiment of the present application, based on the foregoing solution, determining the first strip average crown of the strip under each width condition according to the shape meter data includes: determining the transverse thickness difference of the strip according to the shape meter data; calculating the first strip average crown of the strip under each width condition based on the transverse thickness difference.

[0007] In one embodiment of the present application, based on the foregoing solution, determining the crown value of each node of the work roll based on the crown of the work roll, the first strip average crown, and the second strip average crown includes: calculating the crown conversion coefficient of the work roll crown and the second strip average crown of the corresponding strip under each width condition, where the crown conversion coefficient is used to characterize the proportional relationship of the change amount between the work roll crown and the second strip average crown of the corresponding strip; determining the crown range of each node of the work roll under the corresponding width condition according to the first strip average crown and the crown conversion coefficient; determining the crown value of each node of the work roll based on the crown range of each node of the work roll under the corresponding width condition.

[0008] In one embodiment of the present application, based on the foregoing solution, calculating the crown conversion coefficient of the work roll crown and the second strip average crown of the corresponding strip under each width condition includes: obtaining the work rolls of two simulation models under different process conditions under each width condition, and obtaining the crowns of the two work rolls, which are the first roll crown and the second roll crown respectively; determining the second strip average crowns of the strip under the two work roll conditions, which are the first strip crown and the second strip crown respectively; calculating the first difference between the first roll crown and the second roll crown and the second difference between the first strip crown and the second strip crown; calculating the ratio of the first difference and the second difference, and taking the ratio as the crown conversion coefficient of the work roll crown and the second strip average crown of the corresponding strip under this width condition.

[0009] In one embodiment of the present application, based on the foregoing solution, determining the crown range of each node of the work roll under the corresponding width condition according to the first strip average crown and the crown conversion coefficient includes: calculating the difference range between the first strip average crown of the strip and the ideal strip average crown range under each width condition; calculating the crown range of each node of the work roll under the corresponding width condition based on the difference range and the crown conversion coefficient.

[0010] In one embodiment of the present application, based on the foregoing solution, determining the roll profile convexity value of each node of the work roll based on the roll profile convexity range of each node of the work roll under the corresponding width condition includes: calculating the average roll profile convexity of each node of the work roll based on the roll profile convexity range of each node of the work roll under the corresponding width condition; and taking the average roll profile convexity of each node of the work roll as the roll profile convexity value of each node.

[0011] In one embodiment of the present application, based on the foregoing solution, determining the work roll profile curve based on the roll profile convexity value of each node of the work roll includes: establishing a two-dimensional rectangular coordinate system with the middle of the work roll body as the coordinate origin, where the abscissa is the roll body coordinate and the ordinate is the convexity value of each node of the work roll; fitting the coordinate points on the two-dimensional rectangular coordinate system based on the roll profile convexity value of each node of the work roll to obtain the intermediate work roll profile curve; and determining whether the intermediate work roll profile curve meets the conditions, and if so, taking the intermediate work roll profile curve as the target work roll profile curve.

[0012] According to the second aspect of the embodiments of the present application, there is provided a device for designing a work roll profile. The device includes: a first acquisition unit configured to acquire a strip steel rolled by a rolling mill; a second acquisition unit configured to acquire the flatness meter data of the strip steel and the configuration data of the rolling mill, where the configuration data includes dimension parameters and rolling process parameters; a first determination unit configured to determine the first average strip convexity of the strip steel under each width condition according to the flatness meter data; a building unit configured to build a simulation model based on the configuration data of the rolling mill, where the simulation model is used to simulate the actual rolling mill and simulate the strip steel profile shape; a second determination unit configured to obtain the work roll profile convexity of the simulation model based on the simulation model and determine the second average strip convexity under each width condition; a third determination unit configured to determine the roll profile convexity value of each node of the work roll based on the work roll profile convexity, the first average strip convexity, and the second average strip convexity; a fourth determination unit configured to determine the work roll profile curve based on the roll profile convexity value of each node of the work roll; and determining whether the intermediate work roll profile curve meets the conditions, and if so, taking the intermediate work roll profile curve as the target work roll profile curve.

[0013] According to the third aspect of the embodiments of the present application, there is provided a computer-readable storage medium storing at least one program code, and the at least one program code is loaded and executed by a processor to implement the work roll profile design method as described in any of the foregoing embodiments.

[0014] According to a fourth aspect of the embodiments of the present application, an electronic device is provided. The electronic device includes one or more processors and one or more memories. At least one program code is stored in the one or more memories, and the at least one program code is loaded and executed by the one or more processors to implement the design method of the work roll profile as described in any of the above embodiments.

[0015] In the technical solution proposed in the present application, by obtaining the strip steel rolled by the rolling mill, obtaining the plate shape meter data of the strip steel and the configuration data of the rolling mill, according to the plate shape meter data, determining the first strip steel average convexity of the strip steel under various width conditions, based on the configuration data of the rolling mill, establishing a simulation model, based on the simulation model, obtaining the work roll profile convexity of the simulation model, and determining the second strip steel average convexity under various width conditions, based on the work roll profile convexity, the first strip steel average convexity and the second strip steel average convexity, determining the roll profile convexity values of each node of the work roll, and based on the roll profile convexity values of each node of the work roll, determining the work roll profile curve. Based on this, the design method of the work roll profile proposed in the present application can obtain a work roll profile curve. According to the work roll profile curve, the corresponding work roll is obtained, and by using the work roll to roll the strip steel, it is possible to reduce to a certain extent the double-edge wave plate shape defect that appears during the rolling of high-strength steel and the middle wave plate shape defect that appears during the rolling of soft specification strip steel.

[0016] It should be understood that the above general description and the following detailed description are only exemplary and explanatory, and cannot limit the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings herein are incorporated into the specification and constitute a part of the specification, showing embodiments consistent with the present application, and are used together with the specification to explain the principles of the present application. Obviously, the accompanying drawings in the following description are only some embodiments of the present application, and those of ordinary skill in the art can obtain other drawings based on these drawings without creative efforts. In the drawings:

[0018] Figure 1 Shows a flowchart of the design method of the work roll profile in the embodiments of the present application;

[0019] Figure 2 Shows the target work roll profile curve diagram of a specific embodiment in the present application;

[0020] Figure 3 Shows a block diagram of the design device of the work roll profile in the embodiments of the present application;

[0021] Figure 4 Shows a schematic structural diagram of a computer system of an electronic device suitable for implementing the embodiments of the present application. Detailed implementation manners

[0022] Example embodiments will now be described more fully with reference to the accompanying drawings. However, the example embodiments can be implemented in various forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that this application will be more complete and comprehensive, and will fully convey the concept of the example embodiments to those skilled in the art.

[0023] In addition, the described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. In the following description, numerous specific details are provided to give a thorough understanding of the embodiments of this application. However, those skilled in the art will realize that the technical solutions of this application can be practiced without one or more of the specific details, or other methods, components, devices, steps, etc. may be used. In other cases, well-known methods, devices, implementations, or operations are not shown or described in detail to avoid obscuring aspects of this application.

[0024] The flowcharts shown in the accompanying drawings are merely illustrative and not necessarily include all the content and operations / steps, nor are they necessarily executed in the order described. For example, some operations / steps can be decomposed, while some operations / steps can be combined or partially combined, so the actual execution order may change according to the actual situation.

[0025] The block diagrams shown in the accompanying drawings are merely functional entities and not necessarily corresponding to physically independent entities. That is, these functional entities can be implemented in software form, or in one or more hardware modules or integrated circuits, or in different networks and / or processor devices and / or microcontroller devices.

[0026] It should be noted that: "a plurality of" mentioned herein refers to two or more. "And / or" describes the association relationship of associated objects and indicates that three relationships can exist. For example, A and / or B can represent: A exists alone, A and B exist simultaneously, and B exists alone. The character " / " generally represents an "or" relationship between the associated objects before and after.

[0027] It should be noted that the terms "first", "second", etc. in the description and claims of this application and the above-mentioned accompanying drawings are used to distinguish similar objects and do not necessarily describe a specific order or sequence. It should be understood that the objects so used can be interchanged under appropriate circumstances so that the embodiments of this application described herein can be implemented in an order other than those illustrated or described.

[0028] The implementation details of the technical solutions of the embodiments of this application are elaborated in detail below:

[0029] Figure 1 The flowchart of the design method of the work roll profile in the embodiment of the present application is shown.

[0030] As Figure 1 shown, the design method of the work roll profile at least includes steps 110 to 170.

[0031] Next, the steps 110 to 170 Figure 1 shown will be described in detail:

[0032] In step 110, the strip rolled by the rolling mill is obtained.

[0033] In the present application, the strip with shape defects rolled by the rolling mill within a period of time is obtained, and the quantity and proportion of the strips with different shape defects are counted and analyzed. The period of time can be one year, half a year, or a quarter.

[0034] In the present application, it can be to obtain all the strips rolled by the rolling mill within a period of time, including the strips with shape defects and the strips without shape defects, and count and analyze the quantity and proportion of the strips under different widths, steel types, and strip strength conditions.

[0035] Continuing to refer to Figure 1 , in step 120, the plate shape meter data of the strip and the configuration data of the rolling mill are obtained. The configuration data includes dimension parameters and rolling process parameters.

[0036] In the present application, the plate shape meter data of the strip refers to the data obtained by detecting the strip with shape defects through the plate shape meter, which is used to represent the elongation of the strip with shape defects, and the average convexity of the strip can be obtained through the elongation of the strip.

[0037] In the present application, the dimension parameters at least include data such as roll diameter and length, and the rolling process parameters at least include data such as rolling force, bending roll force, and roll shifting amount. The configuration parameters of the rolling mill are used to guide each module of the simulation model when establishing the simulation model.

[0038] Continuing to refer to Figure 1 , in step 130, according to the plate shape meter data, the first average convexity of the strip under each width condition is determined.

[0039] In the present application, according to the elongation of the strip with shape defects measured by the plate shape meter, the strip convexity is obtained through finite element reverse calculation, and the average value of the strip convexities of all strips with the same width is calculated, and the average value is used as the actual average convexity of the strip under this width condition.

[0040] Continuing to refer to Figure 1, in step 140, based on the configuration data of the rolling mill, a simulation model is established. The simulation model is used to simulate the actual rolling mill and simulate the strip profile shape.

[0041] In the present application, a finite element simulation model can be established using simulation software such as ABAQUS. The data of each module of the simulation model comes from the configuration data of the rolling mill. The simulation model is used to simulate the actual rolling mill. The strip profile shape can be analyzed through this simulation model. The strip profile shape refers to the shape of the strip cross-section. Different working rolls of the simulation model can be obtained by changing the rolling process parameters of the simulation model. Thus, different strip profile shapes can be obtained by changing the working rolls.

[0042] Continue to refer to Figure 1 , in step 150, based on the simulation model, the crown of the working roll of the simulation model is obtained, and the second strip average crown of the strip is determined under each width condition.

[0043] In the present application, through the simulation model, the crown of the working roll of the simulation model can be obtained. Based on the simulation model, the strip profile shape can be analyzed. The strip crown of the strip theoretically rolled by the simulation model can be obtained through calculation. Different strip crowns can be obtained by changing the rolling process parameters under the same width condition. Calculate the average value of the strip crowns of all strips with the same width, and take the average value as the theoretical strip average crown under this width condition.

[0044] Continue to refer to Figure 1 , in step 160, based on the crown of the working roll, the first strip average crown, and the second strip average crown, the crown values of each node of the working roll are determined.

[0045] In the present application, calculate the proportional relationship of the change amount between the crown of the working roll and the theoretical strip average crown of the strip. Calculate the difference between the actual strip average crown of the strip and the ideal strip average crown range of the strip. According to the proportional relationship and the difference, determine the crown value that needs to be adjusted for each node of the working roll, so as to determine the crown values of each node of the working roll.

[0046] Continue to refer to Figure 1 , in step 170, based on the crown values of each node of the working roll, the working roll profile curve is determined.

[0047] In the present application, the crown values of each node of the working roll are used for polynomial fitting to obtain the working roll profile curve.

[0048] In one embodiment of the present application, determining the first strip average crown of the strip under each width condition according to the shape meter data includes: determining the transverse thickness difference of the strip according to the shape meter data; calculating the first strip average crown of the strip under each width condition based on the transverse thickness difference.

[0049] In the present application, the transverse thickness difference of the strip is calculated according to the shape meter data collected by the shape meter. The transverse thickness difference refers to the thickness values at each position in the transverse direction of the strip. Through the transverse thickness difference of the strip, the average value of the strip crowns of all strips under the same width condition is calculated, and the average value is used as the actual strip average crown under this width condition. Calculations are performed according to the same method for different width conditions to obtain the actual strip average crowns of the strips under each width condition.

[0050] In one embodiment of the present application, determining the crown value of each node of the work roll based on the crown of the work roll, the first strip average crown, and the second strip average crown includes: calculating the crown conversion coefficient of the work roll crown and the second strip average crown of the corresponding strip under each width condition. The crown conversion coefficient is used to characterize the proportional relationship of the change amount between the work roll crown and the second strip average crown of the corresponding strip; determining the crown range of each node of the work roll under the corresponding width condition according to the first strip average crown and the crown conversion coefficient; determining the crown value of each node of the work roll based on the crown range of each node of the work roll under the corresponding width condition.

[0051] In one embodiment of the present application, calculating the crown conversion coefficient of the work roll crown and the second strip average crown of the corresponding strip under each width condition includes: obtaining the work rolls of two simulation models under different process conditions under each width condition, and obtaining the crowns of the two work rolls, which are the first roll crown and the second roll crown respectively; determining the second strip average crowns of the strip under the two work roll conditions, which are the first strip crown and the second strip crown respectively; calculating the first difference between the first roll crown and the second roll crown and the second difference between the first strip crown and the second strip crown; calculating the ratio of the first difference and the second difference, and using the ratio as the crown conversion coefficient of the work roll crown and the second strip average crown of the corresponding strip under this width condition.

[0052] In the present application, work rolls of simulation models with different roll crowns can be obtained by changing rolling process parameters such as the bending roll force. Two work rolls with the same width and different process conditions are obtained, and the crowns of the two work rolls are obtained, which are the first roll crown and the second roll crown respectively.

[0053] In the present application, the theoretical average convexity of the strip steel that can be obtained theoretically under the two work roll conditions can be respectively used as the first strip steel convexity and the second strip steel convexity.

[0054] In the present application, calculate the first difference between the first roll profile convexity and the second roll profile convexity, and the second difference between the first strip steel convexity and the second strip steel convexity, calculate the ratio of the first difference and the second difference. This ratio represents the proportional relationship of the change amount between the roll profile convexity of the work roll and the theoretical average convexity of the corresponding strip steel, and use this ratio as the convexity conversion coefficient of the roll profile convexity of the work roll and the theoretical average convexity of the corresponding strip steel under this width condition. For example, if the first difference is 5μm and the second difference is 4μm, then the convexity conversion coefficient can be 4 / 5 or 5 / 4.

[0055] In the present application, the convexity conversion coefficient calculated through the roll profile convexity of the work roll and the theoretical average convexity of the strip steel under each width condition. Multiple widths can be combined into one width interval according to actual needs, and the convexity conversion coefficient of the middle width of the width interval can be used as the convexity conversion coefficient of the integrated width interval.

[0056] In an embodiment of the present application, determining the roll profile convexity range of each node of the work roll under the corresponding width condition according to the first strip steel average convexity and the convexity conversion coefficient includes: calculating the difference range between the first strip steel average convexity of the strip steel under each width condition and the ideal strip steel average convexity range; based on the difference range and the convexity conversion coefficient, calculating the roll profile convexity range of each node of the work roll under the corresponding width condition.

[0057] In the present application, the ideal strip steel average convexity range means that the convexity of the strip steel rarely has shape defects within this convexity range. Calculate the difference range between the actual strip steel average convexity of the strip steel under each width condition and the ideal strip steel average convexity range. Based on the difference range and the convexity conversion coefficient, calculate the roll profile convexity range that the work roll needs to be adjusted. Based on the roll profile convexity of each node of the work roll and the roll profile convexity range that needs to be adjusted, calculate the roll profile convexity range of each node of the work roll.

[0058] In the present application, for example, the actual strip steel average convexity of the strip steel is 25μm, the ideal strip steel average convexity range is 15 - 20μm, the difference range is 5 - 10μm, and the convexity conversion coefficient is 4 / 5. If it is necessary to reduce the actual strip steel average convexity of the strip steel to within the ideal strip steel average convexity range, then it is necessary to increase the roll profile convexity of the work roll by 6.25 - 12.5μm.

[0059] In an embodiment of the present application, determining the roll profile convexity value of each node of the work roll based on the roll profile convexity range of each node of the work roll under the corresponding width condition includes: calculating the average roll profile convexity of each node of the work roll based on the roll profile convexity range of each node of the work roll under the corresponding width condition; and taking the average roll profile convexity of each node of the work roll as the roll profile convexity value of each node.

[0060] In the present application, calculate the average roll profile convexity of the roll profile convexity range of each node of the work roll, and take the average roll profile convexity of each node as the roll profile convexity value of each node. For example, if the roll profile convexity range of a node is 18 - 22 μm, then the roll profile convexity value of the node is 20 μm.

[0061] In an embodiment of the present application, determining the work roll profile curve based on the roll profile convexity values of each node of the work roll includes: establishing a two-dimensional rectangular coordinate system with the middle of the work roll body as the coordinate origin, where the abscissa is the roll body coordinate and the ordinate is the convexity value of each node of the work roll; fitting the coordinate points on the two-dimensional rectangular coordinate system based on the roll profile convexity values of each node of the work roll to obtain the intermediate work roll profile curve; and determining whether the intermediate work roll profile curve meets the conditions, and if it meets, taking the intermediate work roll profile curve as the target work roll profile curve.

[0062] In the present application, a two-dimensional rectangular coordinate system is established with the middle of the work roll body as the coordinate origin, the abscissa is the roll body coordinate, and the ordinate is the convexity value of each node of the work roll. The coordinates and roll profile convexity values of each node of the work roll are projected onto the two-dimensional rectangular coordinate system, and polynomial fitting is performed on the coordinate points on the two-dimensional rectangular coordinate system. Since the middle of the roll body is used as the coordinate origin, the formulated fitting polynomial only includes even terms, from quadratic terms, quartic terms to more terms, gradually increasing the number of polynomial terms until the fitting effect is satisfactory to obtain the intermediate work roll profile curve. The method of solving by integrating the roll profile change rate of the work roll is used to determine whether the intermediate work roll profile curve meets the conditions. The integral of the slope of any interval node of the work roll profile is equal to the change in the roll profile convexity of the nodes within that interval. If the change in the roll profile convexity is within the roll profile convexity range, it means that the conditions are met, and the intermediate work roll profile curve is taken as the target work roll profile curve.

[0063] To make it easier for those skilled in the art to understand the present application, the following will be combined with Figure 2 A specific embodiment is used to illustrate the present application.

[0064] Figure 2 The target work roll profile curve diagram of the specific embodiment in the present application is shown.

[0065] The specific implementation steps are as follows:

[0066] The on-site rolling mill unit is a six-high rolling mill. The intermediate roll adopts a CVC roll profile and has the ability to shift rolls. The work roll adopts a quadratic curve crown roll profile, and the backup roll adopts a VCL roll profile.

[0067] Step 1: Obtain the strip steel rolled by the on-site rolling mill.

[0068] Step 2: Obtain the shape meter data of the strip steel and the configuration data of the rolling mill. Some configuration data of the on-site rolling mill equipment is shown in Table 1.

[0069] Step 3: According to the shape meter data, it is obtained that the elongation difference between the edge and the middle of the strip steel with double-sided waviness shape defects is about 15 - 18 IU, and the elongation difference between the edge and the middle of the strip steel with intermediate waviness shape defects is 8 - 12 IU. Based on the elongation data measured by the shape meter, the actual average crown of the strip steel at each width on site is calculated.

[0070] Step 4: Use ABAQUS software to establish a rolling finite element simulation model.

[0071] Step 5: Based on the simulation model, obtain the crown of the work roll of the simulation model, and calculate the theoretical average crown of the strip steel under each width condition.

[0072] Step 6: Calculate the crown conversion coefficient of the work roll crown and the theoretical average crown of the strip steel under each width condition. The average crown conversion coefficient is 0.83 in the range of 800 - 1200 for the strip steel width, 0.85 in the range of 1200 - 1600, and about 0.87 in the range of 1600 - 1800.

[0073] Step 7: According to the actual average crown of the strip steel in each width interval and the average crown conversion coefficient in this width interval, calculate the range of the work roll crown in this width interval. The target roll crown range of the work roll at the position of 1000 mm width is 18 - 20 um, the target roll crown range of the work roll at the position of 1400 mm width is 27 - 29 um, and the target roll crown range at the position of 1800 mm width is 35 - 40 um.

[0074] Step 8: Based on the range of the crown of each node of the work roll under each width condition, calculate the crown value of each node of the work roll.

[0075] Step 9: According to the obtained crown values of each node of the work roll, use polynomial fitting. Taking the middle of the roll body as the coordinate origin, the formulated fitting polynomial only includes even terms. The formula of the fitting polynomial is:

[0076] R(x) = ax2 +bx 4 +cx 6 +......

[0077] From quadratic, quartic to sextic, gradually increase the number of polynomial terms until the most suitable intermediate work roll profile curve is obtained;

[0078] Step 10, determine whether the intermediate work roll profile curve meets the conditions by integrating and solving the change rate of the work roll profile. If the conditions are met, use the intermediate work roll profile curve as the target work roll profile curve, as Figure 2 shown.

[0079] Use a finite element tool to simulate the obtained work roll profile curve and analyze the shape influence effect on the strip steel with shape defects.

[0080] After the work roll adopts the target roll profile curve, for the strip steel within the width range of 800 - 1200 mm, the convexity of the bearing roll gap is reduced to a certain extent. And within the range of 800 - 1200 of the strip steel width, as the strip steel width decreases, its bearing roll gap convexity basically remains unchanged, which has an obvious improvement effect on the double-sided wave shape defect of narrow specification strip steel. At the same time, it avoids overly changing the strip convexity of wide specification strip steel, thereby reducing the middle wave shape defect of wide specification strip steel.

[0081]

[0082]

[0083] Table 1

[0084] In one or more technical solutions provided in the embodiments of the present application, there are at least the following technical effects or advantages:

[0085] The design method of the work roll profile mentioned in the technical solution proposed in the present application can design a suitable work roll profile, and obtain the corresponding work roll according to the work roll profile. By rolling the strip steel with a rolling mill including the work roll, it can reduce the double-sided wave shape defect that appears during the rolling of high-strength steel and the middle wave shape defect that appears during the rolling of soft specification strip steel to a certain extent at the same time.

[0086] The following introduces the device embodiments of the present application, which can be used to execute the control method for the automatic tilting of the ladle in the first aspect of the above embodiments of the present application. For the details not disclosed in the device embodiments of the present application, please refer to the embodiments of the design method of the work roll profile in the first aspect of the present application above.

[0087] Figure 3 The block diagram of the design device of the work roll profile in the embodiments of the present application is shown.

[0088] As shown Figure 3 in FIG. 3, the design device 300 for the work roll profile in the embodiments of the present application includes: a first acquisition unit 301, a second acquisition unit 302, a first determination unit 303, a construction unit 304, a second determination unit 305, a third determination unit 306, and a fourth determination unit 307.

[0089] Among them, the first acquisition unit 301 is configured to acquire the strip steel rolled by the rolling mill; the second acquisition unit 302 is configured to acquire the flatness meter data of the strip steel and the configuration data of the rolling mill, where the configuration data includes dimensional parameters and rolling process parameters; the first determination unit 303 is configured to determine the first strip steel average convexity of the strip steel under each width condition according to the flatness meter data; the construction unit 304 is configured to establish a simulation model based on the configuration data of the rolling mill, where the simulation model is used to simulate the actual rolling mill and simulate the strip steel profile shape; the second determination unit 305 is configured to obtain the work roll profile convexity of the simulation model based on the simulation model and determine the second strip steel average convexity under each width condition; the third determination unit 306 is configured to determine the profile convexity value of each node of the work roll based on the work roll profile convexity, the first strip steel average convexity, and the second strip steel average convexity; the fourth determination unit 307 is configured to determine the work roll profile curve based on the profile convexity value of each node of the work roll.

[0090] In some embodiments of the present application, based on the foregoing solution, the first determination unit 303 is configured to: determine the transverse thickness difference of the strip steel according to the flatness meter data; and calculate the first strip steel average convexity of the strip steel under each width condition based on the transverse thickness difference.

[0091] In some embodiments of the present application, based on the foregoing solution, the third determination unit 306 is configured to: calculate the convexity conversion coefficient of the work roll profile convexity and the second strip steel average convexity of the corresponding strip steel under each width condition, where the convexity conversion coefficient is used to characterize the proportional relationship of the change amount between the work roll profile convexity and the second strip steel average convexity of the corresponding strip steel; determine the profile convexity range of each node of the work roll under the corresponding width condition according to the first strip steel average convexity and the convexity conversion coefficient; and determine the profile convexity value of each node of the work roll based on the profile convexity range of each node of the work roll under the corresponding width condition.

[0092] In some embodiments of the present application, based on the foregoing solution, the third determination unit 306 is further configured to: obtain the work rolls of two simulation models under different process conditions under each width condition, and obtain the roll profile convexities of the two work rolls, which are the first roll profile convexity and the second roll profile convexity respectively; determine the second strip average convexities of the strip under the two work roll conditions, which are the first strip convexity and the second strip convexity respectively; calculate a first difference between the first roll profile convexity and the second roll profile convexity and a second difference between the first strip convexity and the second strip convexity; calculate a ratio of the first difference and the second difference, and use the ratio as the convexity conversion coefficient of the work roll profile convexity and the corresponding second strip average convexity of the strip under this width condition.

[0093] In some embodiments of the present application, based on the foregoing solution, the third determination unit 306 is further configured to: calculate a difference range between the first strip average convexity of the strip and the ideal strip average convexity range under each width condition; based on the difference range and the convexity conversion coefficient, calculate the roll profile convexity range of each node of the work roll under the corresponding width condition.

[0094] In some embodiments of the present application, based on the foregoing solution, the third determination unit 306 is further configured to: calculate the average roll profile convexity of each node of the work roll based on the roll profile convexity range of each node of the work roll under the corresponding width condition; use the average roll profile convexity of each node of the work roll as the roll profile convexity value of each node.

[0095] In some embodiments of the present application, based on the foregoing solution, the fourth determination unit 307 is configured to: establish a two-dimensional rectangular coordinate system with the middle of the work roll body as the coordinate origin, where the abscissa is the roll body coordinate and the ordinate is the convexity value of each node of the work roll; based on the roll profile convexity values of each node of the work roll, fit the coordinate points on the two-dimensional rectangular coordinate system to obtain the intermediate work roll profile curve; determine whether the intermediate work roll profile curve meets the conditions, and if it meets, use the intermediate work roll profile curve as the target work roll profile curve.

[0096] The present application provides a computer program product, which includes computer instructions stored in a computer-readable storage medium and adapted to be read and executed by a processor, so that a computer device having the processor executes the design method of the work roll profile as described in the above embodiments.

[0097] The present application also provides a computer-readable medium, which may be included in an electronic device; or may exist independently without being assembled into the electronic device. At least one program code is stored in the computer-readable storage medium, and the at least one program code is loaded and executed by a processor to implement the design method of the work roll profile described in the above embodiments.

[0098] The present application also provides an electronic device, which includes one or more processors and one or more memories. At least one program code is stored in the one or more memories, and the at least one program code is loaded and executed by the one or more processors to implement the design method of the work roll profile described in any of the above embodiments.

[0099] Figure 4 The structural schematic diagram of a computer system of an electronic device suitable for implementing the embodiments of the present application is shown.

[0100] It should be noted that Figure 4 The computer system 400 of the electronic device shown is only an example, and should not bring any limitation to the functions and usage scope of the embodiments of the present application.

[0101] As Figure 4 shown, the computer system 400 includes a central processing unit (CPU) 401, which can perform various appropriate actions and processes according to the program stored in the read-only memory (ROM) 402 or the program loaded from the storage part 408 into the random access memory (RAM) 403, such as executing the method described in the above embodiments. In the RAM 403, various programs and data required for system operation are also stored. The CPU 401, ROM 402, and RAM 403 are connected to each other through a bus 404. The input / output (I / O) interface 405 is also connected to the bus 404.

[0102] The following components are connected to the I / O interface 405: an input section 406 including a keyboard, a mouse, etc.; an output section 407 including, for example, a cathode ray tube (CRT), a liquid crystal display (LCD), etc., and a speaker, etc.; a storage section 408 including a hard disk, etc.; and a communication section 409 including a network interface card such as a LAN (Local Area Network) card, a modem, etc. The communication section 409 performs communication processing via a network such as the Internet. A drive 410 is also connected to the I / O interface 405 as required. A removable medium 411, such as a magnetic disk, an optical disk, a magneto-optical disk, a semiconductor memory, etc., is installed on the drive 410 as required so that a computer program read therefrom is installed into the storage section 408 as required.

[0103] Specifically, according to an embodiment of the present application, the process described above with reference to the flowchart can be implemented as a computer software program. For example, an embodiment of the present application includes a computer program product that includes a computer program carried on a computer-readable medium, and the computer program includes program code for performing the method shown in the flowchart. In such an embodiment, the computer program can be downloaded and installed from a network via the communication section 409, and / or installed from the removable medium 411. When the computer program is executed by a central processing unit (CPU) 401, various functions defined in the system of the present application are executed.

[0104] It should be noted that the computer-readable medium shown in the embodiments of the present application can be a computer-readable signal medium, a computer-readable storage medium, or any combination of the two. A computer-readable storage medium can be, for example, but not limited to, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination of the above. More specific examples of the computer-readable storage medium can include, but are not limited to: an electrical connection with one or more wires, a portable computer disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM), a flash memory, an optical fiber, a portable compact disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the above. In the present application, the computer-readable storage medium can be any tangible medium that contains or stores a program, and this program can be used by or in combination with an instruction execution system, apparatus, or device. In the present application, a computer-readable signal medium can include a data signal propagated in a baseband or as part of a carrier wave, which carries computer-readable program code. Such a propagated data signal can take various forms, including but not limited to electromagnetic signals, optical signals, or any suitable combination of the above. A computer-readable signal medium can also be any computer-readable medium other than a computer-readable storage medium, and this computer-readable medium can send, propagate, or transmit a program for use by or in combination with an instruction execution system, apparatus, or device. The program code contained on the computer-readable medium can be transmitted by any appropriate medium, including but not limited to: wireless, wired, etc., or any suitable combination of the above.

[0105] The flowcharts and block diagrams in the accompanying drawings illustrate the possible architectures, functions, and operations of systems, methods, and computer program products according to various embodiments of the present application. Among them, each block in the flowchart or block diagram can represent a module, a program segment, or a part of the code, and the above module, program segment, or part of the code contains one or more executable instructions for implementing the specified logical function. It should also be noted that in some alternative implementations, the functions marked in the blocks may occur in a different order from that marked in the accompanying drawings. For example, two consecutive blocks shown may actually be executed substantially in parallel, and they may sometimes be executed in the reverse order, depending on the functions involved. It should also be noted that each block in the block diagram or flowchart, and the combination of blocks in the block diagram or flowchart, can be implemented by a dedicated hardware-based system for performing the specified functions or operations, or can be implemented by a combination of dedicated hardware and computer instructions.

[0106] The units involved in the embodiments described in this application can be implemented in software or in hardware, and the described units can also be provided in a processor. Among them, the names of these units do not, in some cases, constitute a limitation on the unit itself.

[0107] It should be noted that although several modules or units of a device for action execution are mentioned in the above detailed description, this division is not mandatory. In fact, according to the embodiments of the present application, the features and functions of two or more of the above-described modules or units can be embodied in one module or unit. Conversely, the features and functions of one module or unit described above can be further divided and embodied by multiple modules or units.

[0108] From the description of the above embodiments, those skilled in the art can easily understand that the example embodiments described herein can be implemented in software, or in a manner of software in combination with necessary hardware. Therefore, the technical solutions according to the embodiments of the present application can be embodied in the form of a software product, which can be stored in a non-volatile storage medium (such as a CD-ROM, a USB flash drive, a mobile hard disk, etc.) or on a network, including several instructions to enable a computing device (such as a personal computer, a server, a touch terminal, or a network device, etc.) to execute the method according to the embodiments of the present application.

[0109] After considering the specification and practicing the embodiments disclosed herein, those skilled in the art will readily conceive of other embodiments of the present application. The present application is intended to cover any variations, uses, or adaptations of the present application, which follow the general principles of the present application and include well-known knowledge or conventional technical means in the technical field not disclosed in the present application.

[0110] In addition, the above drawings are only schematic illustrations of the processes included in the method according to the exemplary embodiments of the present application, rather than for limiting purposes. It is easy to understand that the processes shown in the above drawings do not indicate or limit the chronological order of these processes. Additionally, it is also easy to understand that these processes can be executed, for example, synchronously or asynchronously in multiple modules.

[0111] It should be understood that the present application is not limited to the exact structures already described and shown in the drawings, and various modifications and changes can be made without departing from its scope. The scope of the present application is only limited by the appended claims.

Claims

1. A design method for the roll profile of a work roll, characterized in that, the method includes: obtaining the strip steel rolled by the rolling mill; obtaining the plate shape meter data of the strip steel and the configuration data of the rolling mill, where the configuration data includes dimensional parameters and rolling process parameters; determining the first average convexity of the strip steel under each width condition according to the plate shape meter data; establishing a simulation model based on the configuration data of the rolling mill, where the simulation model is used to simulate the actual rolling mill and simulate the strip steel profile shape; obtaining the roll profile convexity of the work roll of the simulation model based on the simulation model, and determining the second average convexity of the strip steel under each width condition; determining the roll profile convexity value of each node of the work roll based on the roll profile convexity of the work roll, the first average convexity of the strip steel, and the second average convexity of the strip steel; determining the roll profile curve of the work roll based on the roll profile convexity values of each node of the work roll; the determining the roll profile curve of the work roll based on the roll profile convexity values of each node of the work roll includes: establishing a two-dimensional rectangular coordinate system with the middle of the work roll body as the coordinate origin, where the abscissa is the roll body coordinate and the ordinate is the convexity value of each node of the work roll; fitting the coordinate points on the two-dimensional rectangular coordinate system based on the roll profile convexity values of each node of the work roll to obtain the intermediate work roll profile curve; determining whether the intermediate work roll profile curve meets the conditions, and if it meets, using the intermediate work roll profile curve as the target work roll profile curve.

2. The method according to claim 1, characterized in that, the determining the first average convexity of the strip steel under each width condition according to the plate shape meter data includes: determining the transverse thickness difference of the strip steel according to the plate shape meter data; calculating the first average convexity of the strip steel under each width condition based on the transverse thickness difference.

3. The method according to claim 1, characterized in that, the determining the roll profile convexity value of each node of the work roll based on the roll profile convexity of the work roll, the first average convexity of the strip steel, and the second average convexity of the strip steel includes: calculating the convexity conversion coefficient of the roll profile convexity of the work roll and the second average convexity of the corresponding strip steel under each width condition, where the convexity conversion coefficient is used to characterize the proportional relationship of the change amount between the roll profile convexity of the work roll and the second average convexity of the corresponding strip steel; determining the roll profile convexity range of each node of the work roll under the corresponding width condition according to the first average convexity of the strip steel and the convexity conversion coefficient; determining the roll profile convexity value of each node of the work roll based on the roll profile convexity range of each node of the work roll under the corresponding width condition.

4. The method according to claim 3, characterized in that, the calculating the convexity conversion coefficient of the roll profile convexity of the work roll and the second average convexity of the corresponding strip steel under each width condition includes: obtaining the work rolls of two simulation models under different process conditions under each width condition, and obtaining the roll profile convexities of the two work rolls, which are the first roll profile convexity and the second roll profile convexity respectively; determining the second average convexity of the strip steel under the two work roll conditions, which are the first strip steel convexity and the second strip steel convexity respectively; Calculate a first difference between the first roll crown and the second roll crown and a second difference between the first strip crown and the second strip crown; Calculate a ratio of the first difference and the second difference, and use the ratio as a crown conversion coefficient of the work roll crown to the second average strip crown of the corresponding strip under this width condition.

5. The method according to claim 4, wherein, determining the roll crown range of each node of the work roll under the corresponding width condition according to the first average strip crown and the crown conversion coefficient includes: Calculating a difference range between the first average strip crown of the strip under each width condition and the ideal average strip crown range; Based on the difference range and the crown conversion coefficient, calculate the roll crown range of each node of the work roll under the corresponding width condition.

6. The method according to claim 5, wherein, determining the roll crown value of each node of the work roll based on the roll crown range of each node of the work roll under the corresponding width condition includes: Based on the roll crown range of each node of the work roll under the corresponding width condition, calculate the average roll crown of each node of the work roll; Use the average roll crown of each node of the work roll as the roll crown value of each node.

7. A device for designing the roll shape of a work roll, wherein, the device includes: A first acquisition unit for acquiring the strip rolled by the rolling mill; A second acquisition unit for acquiring the plate shape meter data of the strip and the configuration data of the rolling mill, where the configuration data includes dimension parameters and rolling process parameters; A first determination unit for determining the first average strip crown of the strip under each width condition according to the plate shape meter data; A building unit for building a simulation model based on the configuration data of the rolling mill, where the simulation model is used to simulate the actual rolling mill and simulate the strip profile shape; A second determination unit for obtaining the work roll crown of the simulation model based on the simulation model and determining the second average strip crown of the strip under each width condition; A third determination unit for determining the roll crown value of each node of the work roll based on the work roll crown, the first average strip crown, and the second average strip crown; A fourth determination unit for determining the roll shape curve of the work roll based on the roll crown values of each node of the work roll; The fourth determination unit is further configured to establish a two-dimensional rectangular coordinate system with the middle of the work roll body as the coordinate origin, where the abscissa is the roll body coordinate and the ordinate is the crown value of each node of the work roll; Based on the roll crown values of each node of the work roll, fit the coordinate points on the two-dimensional rectangular coordinate system to obtain the intermediate work roll shape curve; Determine whether the intermediate work roll shape curve meets the conditions. If it meets, use the intermediate work roll shape curve as the target work roll shape curve.

8. A computer-readable storage medium, wherein, At least one program code is stored in the computer-readable storage medium, and the at least one program code is loaded and executed by a processor to implement the design method of the work roll profile according to any one of claims 1 to 6.

9. An electronic device, characterized in that the electronic device includes one or more processors and one or more memories, and at least one program code is stored in the one or more memories, and the at least one program code is loaded and executed by the one or more processors to implement the design method of the work roll profile according to any one of claims 1 to 6.

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