Method and device for determining rolling mill stand tension, medium and electronic equipment
By using computerized stand tension values, the problem of uneven stand tension during cold rolling was solved, thereby improving rolling stability and production safety.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- SHOUGANG GROUP CO LTD
- Filing Date
- 2024-09-03
- Publication Date
- 2026-06-19
AI Technical Summary
In existing technologies, the setting of mill stand tension during cold rolling lacks uniformity considerations, resulting in uneven forward slippage, which affects rolling stability and production safety.
By calculating the target range for forward sliding optimization, the initial rack inlet tension value, the flattening radius, and the preset outlet tension value, the target outlet tension value and the next rack inlet tension value are determined, thereby achieving tension uniformity control between racks.
It improved rolling stability and product quality, reduced production accidents, and enhanced economic benefits.
Smart Images
Figure CN118988994B_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of mill stand tension control technology, and in particular, to a method, apparatus, medium, and electronic equipment for determining mill stand tension. Background Technology
[0002] Currently, forward slip is a crucial process parameter in cold continuous rolling. It is key to matching the speed of each stand in the load distribution of continuous rolling and is also a major indicator for accurately controlling the friction and lubrication state. Insufficient forward slip in cold rolling will cause slippage, which can range from affecting the surface quality and dimensional accuracy of the strip to causing serious production accidents such as strip breakage and steel pile-up, damaging the rolls and stand equipment, and affecting production capacity.
[0003] Among them, tension is an effective means of adjusting the size of the forward slide. The traditional tension setting for each stand is based on the strip strength and production experience and is set in the form of a table. It does not take into account the uniformity of the forward slide of each stand, which may cause the forward slide of individual stands to be too large or too small in the cold continuous rolling production process, and there is a risk of insufficient rolling stability.
[0004] Therefore, improving the rationality of calculating the tension of the rolling mill stand is an urgent technical problem to be solved. Summary of the Invention
[0005] The purpose of this application is to provide a method, apparatus, medium, and electronic equipment for determining the tension of a rolling mill stand. This application can improve the rationality of calculating the tension of a rolling mill stand.
[0006] Other features and advantages of this application will become apparent from the following detailed description, or may be learned in part from practice of this application.
[0007] According to one aspect of the embodiments of this application, a method for determining the tension of a rolling mill stand is provided, applied to a rolling mill unit, the rolling mill unit including multiple stands, the method comprising:
[0008] Obtain the forward sliding optimization target range, the initial inlet tension value corresponding to the initial rack, the flattening radius corresponding to the current rack, and the preset outlet tension value corresponding to the current rack; use the initial inlet tension value corresponding to the initial rack as the preset inlet tension value corresponding to the current rack, and calculate the forward sliding value corresponding to the current rack based on the flattening radius corresponding to the current rack, the preset inlet tension value corresponding to the current rack, and the preset outlet tension value corresponding to the current rack; determine the target outlet tension value corresponding to the current rack and the preset inlet tension value corresponding to the next rack based on the forward sliding optimization target range, the preset outlet tension value, and the forward sliding value; use the next rack as the current rack, and re-execute the step of calculating the forward sliding value corresponding to the current rack based on the flattening radius corresponding to the current rack, the preset inlet tension value corresponding to the current rack, and the preset outlet tension value corresponding to the current rack, until the sequence number corresponding to the current rack is equal to a preset threshold.
[0009] In one embodiment of this application, based on the aforementioned scheme, determining the target outlet tension value corresponding to the current rack and the preset inlet tension value corresponding to the next rack based on the forward sliding optimization target range, the preset outlet tension value, and the forward sliding value includes: if the forward sliding value corresponding to the current rack belongs to the forward sliding optimization target range, then the preset outlet tension value is determined to be the target outlet tension value corresponding to the current rack; if the sequence number corresponding to the current rack is not equal to the preset threshold, then the target outlet tension value is used as the preset inlet tension value corresponding to the next rack.
[0010] In one embodiment of this application, based on the foregoing scheme, the method further includes: if the forward slip value does not fall within the forward slip optimization target range, then a new preset outlet tension value is determined based on the preset tension increment and the preset outlet tension value; if the new preset outlet tension value is less than or equal to the maximum outlet tension value corresponding to the current rack, then the step of calculating the forward slip value corresponding to the current rack based on the flattening radius corresponding to the current rack, the preset inlet tension value corresponding to the current rack, and the preset outlet tension value corresponding to the current rack is re-executed.
[0011] In one embodiment of this application, based on the foregoing scheme, the method further includes: if the new preset outlet tension value is greater than the maximum outlet tension value corresponding to the current rack, then the maximum outlet tension value corresponding to the current rack is used as the target outlet tension value corresponding to the current rack; if the sequence number corresponding to the current rack is not equal to the preset threshold, then the target outlet tension value is used as the preset inlet tension value corresponding to the next rack.
[0012] In one embodiment of this application, based on the foregoing scheme, before the step of calculating the forward slip value corresponding to the current frame according to the flattening radius corresponding to the current frame, the preset inlet tension value corresponding to the current frame, and the preset outlet tension value corresponding to the current frame, the method further includes: determining the flattening radius corresponding to the current frame according to the strip width, the average deformation resistance of the strip, the work roll radius, the work roll Poisson's ratio, the work roll elastic modulus, the rolling force, the friction coefficient, the strip inlet thickness, and the strip outlet thickness corresponding to the current frame.
[0013] In one embodiment of this application, based on the foregoing scheme, the step of calculating the forward slip value corresponding to the current rack according to the flattening radius, the preset inlet tension value, and the preset outlet tension value of the current rack includes: determining the forward slip value corresponding to the current rack according to the flattening radius, friction coefficient, inlet deformation resistance, outlet deformation resistance, the preset inlet tension value, and the preset outlet tension value of the current rack.
[0014] In one embodiment of this application, based on the foregoing scheme, the target range for forward sliding optimization is 0.7%-1.2%.
[0015] According to one aspect of the embodiments of this application, a device for determining the tension of a rolling mill stand is provided. The device includes: an acquisition unit, configured to acquire a forward slip optimization target range, an initial inlet tension value corresponding to an initial stand, a flattening radius corresponding to the current stand, and a preset outlet tension value corresponding to the current stand; a calculation unit, configured to use the initial inlet tension value corresponding to the initial stand as the preset inlet tension value corresponding to the current stand, and calculate a forward slip value corresponding to the current stand based on the flattening radius corresponding to the current stand, the preset inlet tension value corresponding to the current stand, and the preset outlet tension value corresponding to the current stand; a determination unit, configured to determine a target outlet tension value corresponding to the current stand and a preset inlet tension value corresponding to the next stand based on the forward slip optimization target range, the preset outlet tension value, and the forward slip value; and a looping unit, configured to use the next stand as the current stand and re-execute the step of calculating the forward slip value corresponding to the current stand based on the flattening radius corresponding to the current stand, the preset inlet tension value corresponding to the current stand, and the preset outlet tension value corresponding to the current stand, until the sequence number corresponding to the current stand is equal to a preset threshold.
[0016] According to one aspect of the embodiments of this application, a computer-readable storage medium is provided, on which a computer program is stored, the computer program including executable instructions that, when executed by a processor, implement the methods described in the above embodiments.
[0017] According to one aspect of the embodiments of this application, an electronic device is provided, including: one or more processors; and a memory for storing executable instructions of the processors, which, when executed by the one or more processors, cause the one or more processors to implement the method described in the above embodiments.
[0018] In this application, firstly, the target range for forward sliding optimization, the initial inlet tension value corresponding to the initial stand, the flattening radius corresponding to the current stand, and the preset outlet tension value corresponding to the current stand are obtained. Then, the preset initial inlet tension value is used as the preset inlet tension value corresponding to the current stand, and based on the flattening radius, the preset inlet tension value, and the preset outlet tension value, the target outlet tension value and the preset inlet tension value corresponding to the next stand are determined. This allows for control of the rolling process based on the target outlet tension value and the preset inlet tension value corresponding to the next stand. Therefore, this application can control the inlet and outlet tension values between stands by calculating and analyzing the forward sliding values corresponding to the stands, thereby achieving reasonable control of the uniformity of the forward sliding values between stands through reasonable tension settings, which helps improve rolling stability, product quality, and economic efficiency.
[0019] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and do not limit this application. Attached Figure Description
[0020] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application. It is obvious that the drawings described below are merely some embodiments of this application, and those skilled in the art can obtain other drawings based on these drawings without any inventive effort. In the drawings:
[0021] Figure 1 This is a flowchart illustrating a method for determining the tension of a rolling mill stand according to an embodiment of this application;
[0022] Figure 2 The calculation process for the target outlet tension value and the preset inlet tension value corresponding to the next rack is shown in the embodiments of this application.
[0023] Figure 3 This is a block diagram of a device for determining the tension of a rolling mill stand according to an embodiment of this application;
[0024] Figure 4 This is a schematic diagram of the system structure of an electronic device according to an embodiment of this application. Detailed Implementation
[0025] Exemplary embodiments will now be described more fully with reference to the accompanying drawings. However, these exemplary embodiments can be implemented in many forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided to make this application more comprehensive and complete, and to fully convey the concept of the exemplary embodiments to those skilled in the art.
[0026] Furthermore, the described features, structures, or characteristics can be combined in any suitable manner in one or more embodiments. Numerous specific details are provided in the following description to give a thorough understanding of embodiments of this application. However, those skilled in the art will recognize that the technical solutions of this application can be practiced without one or more of the specific details, or other methods, components, apparatuses, steps, etc., can be employed. In other instances, well-known methods, apparatuses, implementations, or operations are not shown or described in detail to avoid obscuring various aspects of this application.
[0027] The block diagrams shown in the accompanying drawings are merely functional entities and do not necessarily correspond to physically independent entities. That is, these functional entities can be implemented in software, in one or more hardware modules or integrated circuits, or in different network and / or processor devices and / or microcontroller devices.
[0028] The flowcharts shown in the accompanying drawings are merely illustrative and do not necessarily include all content and operations / steps, nor do they necessarily have to be performed in the described order. For example, some operations / steps can be broken down, while others can be combined or partially combined; therefore, the actual execution order may change depending on the specific circumstances.
[0029] It should be noted that "multiple" in this article refers to two or more. "And / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A alone, A and B simultaneously, or B alone. The character " / " generally indicates that the preceding and following related objects have an "or" relationship.
[0030] The implementation details of the technical solutions in the embodiments of this application are described in detail below:
[0031] According to one aspect of this application, a method for determining the tension of a rolling mill stand is provided. Figure 1 The flowchart illustrates a method for determining the tension of a rolling mill stand according to an embodiment of this application. This method can be performed by a device with computational processing capabilities. The method includes at least steps 110 to 140, which are described in detail below:
[0032] In step 110, the forward sliding optimization target range, the initial inlet tension value corresponding to the initial frame, the flattening radius corresponding to the current frame, and the preset outlet tension value corresponding to the current frame are obtained.
[0033] In this application, during the strip rolling process, tension deviations between stands often lead to excessively large or small forward slip values between each stand, resulting in insufficient rolling stability. Therefore, the tension values of each stand can be controlled by obtaining the forward slip optimization target range, the initial inlet tension value corresponding to the initial stand, the flattening radius corresponding to the current stand, and the preset outlet tension value corresponding to the current stand, thereby controlling the forward slip values between each stand. The initial inlet tension value corresponding to the initial stand can be set to 80 MPa.
[0034] Simultaneously, before obtaining the forward sliding optimization target range, the initial inlet tension value corresponding to the initial stand, the flattening radius corresponding to the current stand, and the preset outlet tension value corresponding to the current stand, the basic equipment parameters, basic process parameters, and number of stands for the strip and the stand can be obtained. The basic equipment parameters for the strip and the stand may include the strip width, the strip inlet thickness for each stand, the strip outlet thickness for each stand, the strip yield strength, the diameter of the strip work roll, the elastic modulus of the work roll, the Poisson's ratio of the work roll, and the average deformation resistance of the strip. The basic process parameters may include the inlet tension value of the first stand (i.e., the initial inlet tension value), the outlet tension value of the last stand, and the maximum outlet tension value corresponding to each stand. The number of stands can be four to six.
[0035] Specifically, a five-stand cold continuous rolling mill can be used, with the strip grade being DX51D. The basic equipment parameters for the strip are as follows: strip yield strength of 250MPa, strip entry thickness at each stand of {2.940mm, 1.815mm, 1.157mm, 0.784mm, 0.611mm}, strip exit thickness at each stand of {1.815mm, 1.157mm, 0.784mm, 0.611mm, 0.600mm}, and average deformation resistance of the strip of {453MPa, 557MPa, 609MPa, 637MPa, 646MPa}. The basic equipment parameters of the frame are as follows: the diameters of the working rolls of the 5 frames are {482mm, 490mm, 517mm, 548mm, 551mm}, the elastic modulus of the working rolls is 210GPa, the Poisson's ratio of the working rolls is 0.3, the inlet deformation resistance of each frame is {360MPa, 505MPa, 593MPa, 611MPa, 641MPa}, the outlet deformation resistance of each frame is {505MPa, 593MPa, 611MPa, 641MPa, 650MPa}, and the coefficient of friction of each frame is {0.038, 0.042, 0.041, 0.057, 0.056}. The basic process parameters are as follows: the inlet tension of the first frame is 45MPa, the outlet tension of the last frame is 40MPa, and the maximum outlet tension of each frame is {135MPa, 167MPa, 182MPa, 191MPa}. The target range for forward slip optimization can be 0.7%-1.2%.
[0036] Continue to refer to Figure 1 In step 120, the initial inlet tension value corresponding to the initial frame is used as the preset inlet tension value corresponding to the current frame, and the forward sliding value corresponding to the current frame is calculated based on the flattening radius corresponding to the current frame, the preset inlet tension value corresponding to the current frame, and the preset outlet tension value corresponding to the current frame.
[0037] In some embodiments, the forward sliding value corresponding to the current frame can be determined based on the flattening radius, friction coefficient, inlet deformation resistance, outlet deformation resistance, preset inlet tension value, and preset outlet tension value corresponding to the current frame.
[0038] During implementation, the forward sliding value corresponding to the current rack can be calculated using the following formula:
[0039]
[0040] Among them, R ，denoted as the flattening radius of the current rack, μ as the friction coefficient of the current rack, kb as the inlet deformation resistance of the current rack, kf as the outlet deformation resistance of the current rack, tb as the preset outlet tension value of the current rack, and tf as the preset outlet tension value of the current rack.
[0041] In some embodiments, before calculating the forward slip value corresponding to the current stand, the flattening radius corresponding to the current stand can be determined based on the strip width, average deformation resistance of the strip, work roll radius, work roll Poisson's ratio, work roll elastic modulus, rolling force, friction coefficient, strip inlet thickness, and strip outlet thickness corresponding to the current stand.
[0042] During implementation, the flattening radius corresponding to the current rack can be calculated using the following formula:
[0043]
[0044] Among them, R ， R is the flattening radius corresponding to the current stand, v is the Poisson's ratio of the work roll corresponding to the current stand, E is the elastic modulus of the work roll corresponding to the current stand, B is the strip width corresponding to the current stand, H is the strip inlet thickness corresponding to the current stand, h is the strip outlet thickness corresponding to the current stand, P is the rolling force corresponding to the current stand, kp is the average deformation resistance of the strip, and μ is the friction coefficient corresponding to the current stand.
[0045] Continue to refer to Figure 1 In step 130, based on the forward sliding optimization target range, the preset outlet tension value, and the forward sliding value, the target outlet tension value corresponding to the current rack and the preset inlet tension value corresponding to the next rack are determined.
[0046] In this application, based on the forward sliding optimization target range, the preset outlet tension value, and the forward sliding value, the target outlet tension value corresponding to the current rack and the preset inlet tension value corresponding to the next rack are determined. Specifically, this can be achieved through... Figure 2 Calculate and determine the target outlet tension value corresponding to the current rack and the preset inlet tension value corresponding to the next rack. Figure 2 This document describes the calculation process for the target outlet tension value and the preset inlet tension value corresponding to the next rack, as shown in the embodiments of this application. Wherein, I is the rack number, N is the preset threshold, Ti is the target outlet tension value, T0 is the preset outlet tension value, and Tmaxi is the maximum outlet tension value.
[0047] Reference Figure 2In determining the target outlet tension value for the current rack and the preset inlet tension value for the next rack based on the forward sliding optimization target range, the preset outlet tension value, and the forward sliding value, the following steps may be included: If the forward sliding value for the current rack belongs to the forward sliding optimization target range, then the preset outlet tension value is determined to be the target outlet tension value for the current rack. If the sequence number corresponding to the current rack is not equal to the preset threshold, then the target outlet tension value is used as the preset inlet tension value for the next rack. That is, when the forward sliding value for the current rack belongs to the forward sliding optimization target range, let Ti = T0, and when I is not equal to N, let Ti be the preset inlet tension value for the next rack.
[0048] Continue to refer to Figure 2 The method for determining the target outlet tension value for the current rack and the preset inlet tension value for the next rack, based on the forward sliding optimization target range, the preset outlet tension value, and the forward sliding value, may further include the following steps: If the forward sliding value does not belong to the forward sliding optimization target range, then a new preset outlet tension value is determined based on the preset tension increment and the preset outlet tension value. If the new preset outlet tension value is less than or equal to the maximum outlet tension value corresponding to the current rack, then the step of calculating the forward sliding value corresponding to the current rack based on the flattening radius, the preset inlet tension value, and the preset outlet tension value corresponding to the current rack is re-executed. That is, when the forward sliding value does not belong to the forward sliding optimization target range, let T0 (new preset outlet tension value) = T0 + 1, where 1 is the preset tension increment.
[0049] Meanwhile, when T0≤Tmaxi, the step of calculating the forward slip value corresponding to the current rack based on the flattening radius, the preset inlet tension value, and the preset outlet tension value corresponding to the current rack is re-executed.
[0050] Continue to refer to Figure 2In determining the target outlet tension value for the current rack and the preset inlet tension value for the next rack based on the forward sliding optimization target range, the preset outlet tension value, and the forward sliding value, the following steps may also be included: If the new preset outlet tension value is greater than the maximum outlet tension value for the current rack, then the maximum outlet tension value for the current rack is taken as the target outlet tension value for the current rack. If the sequence number for the current rack is not equal to the preset threshold, then the target outlet tension value is taken as the preset inlet tension value for the next rack. That is, when T0 > Tmaxi, let T0 = Tmaxi. At the same time, let Ti = T0, and when I is not equal to N, let Ti be the preset inlet tension value for the next rack.
[0051] Based on the specific strip steel and the basic equipment parameters, basic process parameters, and number of stands mentioned above, and combined with the calculated forward slip values for each stand, the flattening radius of the work rolls can be obtained as {482.34, 490.06, 517.09, 548.86, 551.93}, in mm. The optimal preset inlet tension values for each stand are {45, 91, 140, 153, 147}, in MPa. The target outlet tension values for each stand are {91, 140, 153, 147, 40}, in MPa.
[0052] Continue to refer to Figure 1 In step 140, the next rack is taken as the current rack, and the step of calculating the forward sliding value of the current rack based on the flattening radius, the preset inlet tension value and the preset outlet tension value of the current rack is re-executed until the sequence number of the current rack is equal to the preset threshold.
[0053] In this application, since the rolling process requires the joint operation of multiple stands, it is necessary to cyclically calculate and control the tension of the stands. That is, the next stand is taken as the current stand, and the step of calculating the forward slip value corresponding to the current stand based on the flattening radius, the preset inlet tension value, and the preset outlet tension value corresponding to the current stand is repeated until the sequence number corresponding to the current stand is equal to the preset threshold.
[0054] Figure 3 This is a block diagram of a device for determining the tension of a rolling mill stand according to an embodiment of this application.
[0055] Reference Figure 3As shown, a mill stand tension determination device 300 according to an embodiment of this application includes: an acquisition unit 301, configured to acquire the forward sliding optimization target range, the initial inlet tension value corresponding to the initial stand, the flattening radius corresponding to the current stand, and the preset outlet tension value corresponding to the current stand; and a calculation unit 302, configured to use the initial inlet tension value corresponding to the initial stand as the preset inlet tension value corresponding to the current stand, and calculate the current stand tension value based on the flattening radius corresponding to the current stand, the preset inlet tension value corresponding to the current stand, and the preset outlet tension value corresponding to the current stand. The forward sliding value corresponding to the previous rack; the determination unit 303 is used to determine the target outlet tension value corresponding to the current rack and the preset inlet tension value corresponding to the next rack based on the forward sliding optimization target range, the preset outlet tension value and the forward sliding value; the loop unit 304 is used to take the next rack as the current rack and re-execute the step of calculating the forward sliding value corresponding to the current rack based on the flattening radius corresponding to the current rack, the preset inlet tension value corresponding to the current rack and the preset outlet tension value corresponding to the current rack, until the sequence number corresponding to the current rack is equal to the preset threshold.
[0056] In another aspect, this application also provides a computer-readable storage medium having a program product stored thereon capable of implementing the methods described above in this specification. In some possible implementations, various aspects of this application may also be implemented as a program product comprising program code that, when run on a terminal device, causes the terminal device to perform the steps described in the "Exemplary Methods" section of this specification according to the various exemplary embodiments of this application.
[0057] Computer-readable signal media may include data signals propagated in baseband or as part of a carrier wave, carrying readable program code. Such propagated data signals may take various forms, including but not limited to electromagnetic signals, optical signals, or any suitable combination thereof. A readable signal medium may also be any readable medium other than a readable storage medium, capable of sending, propagating, or transmitting programs for use by or in conjunction with an instruction execution system, apparatus, or device.
[0058] The program code contained on the readable medium may be transmitted using any suitable medium, including but not limited to wireless, wired, optical fiber, RF, etc., or any suitable combination thereof.
[0059] Program code for performing the operations of this application can be written in any combination of one or more programming languages, including object-oriented programming languages such as Java and C++, and conventional procedural programming languages such as C or similar languages. The program code can execute entirely on the user's computing device, partially on the user's device, as a standalone software package, partially on the user's computing device and partially on a remote computing device, or entirely on a remote computing device or server. In cases involving remote computing devices, the remote computing device can be connected to the user's computing device via any type of network, including a local area network (LAN) or a wide area network (WAN), or it can be connected to an external computing device (e.g., via the Internet using an Internet service provider).
[0060] In another respect, this application also provides an electronic device capable of implementing the above-described method.
[0061] Those skilled in the art will understand that various aspects of this application can be implemented as a system, method, or program product. Therefore, various aspects of this application can be specifically implemented in the following forms: a completely hardware implementation, a completely software implementation (including firmware, microcode, etc.), or a combination of hardware and software implementations, collectively referred to herein as a "circuit," "module," or "system."
[0062] Figure 4 This is a schematic diagram of the system structure of an electronic device according to an embodiment of this application. Referring below... Figure 4 To describe an electronic device 400 according to this embodiment of the present application. Figure 4 The electronic device 400 shown is merely an example and should not impose any limitations on the functionality and scope of use of the embodiments of this application.
[0063] like Figure 4 As shown, the electronic device 400 is manifested in the form of a general-purpose computing device. The components of the electronic device 400 may include, but are not limited to: at least one processing unit 410, at least one storage unit 420, and a bus 430 connecting different system components (including storage unit 420 and processing unit 410).
[0064] The storage unit stores program code that can be executed by the processing unit 410, causing the processing unit 410 to perform the steps described in the "Embodiment Methods" section above according to various exemplary embodiments of this application.
[0065] Storage unit 420 may include a readable medium in the form of a volatile storage unit, such as random access memory (RAM) 421 and / or cache memory 422, and may further include a read-only memory (ROM) 423.
[0066] Storage unit 420 may also include a program / utility 424 having a set (at least one) of program modules 425, such program modules 425 including but not limited to: an operating system, one or more application programs, other program modules, and program data, each or some combination of these examples may include an implementation of a network environment.
[0067] Bus 430 can represent one or more of several types of bus structures, including a memory cell bus or memory cell controller, a peripheral bus, a graphics acceleration port, a processing unit, or a local bus using any of the various bus structures.
[0068] Electronic device 400 can also communicate with one or more external devices 1200 (e.g., keyboard, pointing device, Bluetooth device, etc.), and with one or more devices that enable a user to interact with electronic device 400, and / or with any device that enables electronic device 400 to communicate with one or more other computing devices (e.g., router, modem, etc.). This communication can be performed via input / output (I / O) interface 450. Furthermore, electronic device 400 can also communicate with one or more networks (e.g., local area network (LAN), wide area network (WAN), and / or public networks, such as the Internet) via network adapter 460. As shown, network adapter 460 communicates with other modules of electronic device 400 via bus 430. It should be understood that, although not shown in the figures, other hardware and / or software modules can be used in conjunction with electronic device 400, including but not limited to: microcode, device drivers, redundant processing units, external disk drive arrays, RAID systems, tape drives, and data backup storage systems.
[0069] Through the above description of the embodiments, those skilled in the art will readily understand that the exemplary embodiments described herein can be implemented by software or by combining software with necessary hardware. Therefore, the technical solutions according to the embodiments of this 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, USB flash drive, external hard drive, etc.) or on a network, including several instructions to cause a computing device (such as a personal computer, server, terminal device, or network device, etc.) to execute the method according to the embodiments of this application.
[0070] Furthermore, the above figures are merely illustrative of the processes included in the method according to exemplary embodiments of this application, and are not intended to be limiting. It is readily understood that the processes shown in the above figures do not indicate or limit the temporal order of these processes. Additionally, it is readily understood that these processes may be executed synchronously or asynchronously, for example, in multiple modules.
[0071] It should be understood that this application is not limited to the precise structures described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this application is limited only by the appended claims.
Claims
1. A method for determining the tension of a rolling stand, applied to a rolling train comprising a plurality of stands, characterized in that, The method includes: Obtain the forward sliding optimization target range, the initial inlet tension value corresponding to the initial frame, the flattening radius corresponding to the current frame, and the preset outlet tension value corresponding to the current frame; The initial inlet tension value corresponding to the initial frame is used as the preset inlet tension value corresponding to the current frame, and the forward sliding value corresponding to the current frame is calculated based on the flattening radius corresponding to the current frame, the preset inlet tension value corresponding to the current frame, and the preset outlet tension value corresponding to the current frame. Based on the forward sliding optimization target range, the preset outlet tension value, and the forward sliding value, the target outlet tension value corresponding to the current rack and the preset inlet tension value corresponding to the next rack are determined, including: if the forward sliding value corresponding to the current rack belongs to the forward sliding optimization target range, then the preset outlet tension value is determined to be the target outlet tension value corresponding to the current rack; if the sequence number corresponding to the current rack is not equal to the preset threshold, then the target outlet tension value is used as the preset inlet tension value corresponding to the next rack. The next rack is taken as the current rack, and the step of calculating the forward sliding value of the current rack based on the flattening radius, the preset inlet tension value and the preset outlet tension value of the current rack is executed again until the sequence number of the current rack is equal to the preset threshold. The method further includes: if the forward slip value does not fall within the forward slip optimization target range, then a new preset outlet tension value is determined based on the preset tension increment and the preset outlet tension value; if the new preset outlet tension value is less than or equal to the maximum outlet tension value corresponding to the current rack, then the step of calculating the forward slip value corresponding to the current rack based on the flattening radius corresponding to the current rack, the preset inlet tension value corresponding to the current rack, and the preset outlet tension value corresponding to the current rack is re-executed. The method further includes: if the new preset outlet tension value is greater than the maximum outlet tension value corresponding to the current rack, then the maximum outlet tension value corresponding to the current rack is used as the target outlet tension value corresponding to the current rack; if the sequence number corresponding to the current rack is not equal to the preset threshold, then the target outlet tension value is used as the preset inlet tension value corresponding to the next rack.
2. The method of claim 1, wherein, Before the step of calculating the forward sliding value corresponding to the current rack based on the flattening radius, the preset inlet tension value, and the preset outlet tension value corresponding to the current rack, the method further includes: The flattening radius corresponding to the current stand is determined based on the strip width, average deformation resistance of the strip, work roll radius, work roll Poisson's ratio, work roll elastic modulus, rolling force, friction coefficient, strip inlet thickness, and strip outlet thickness.
3. The method of claim 1, wherein, The step of calculating the forward slip value corresponding to the current rack based on the flattening radius, the preset inlet tension value, and the preset outlet tension value corresponding to the current rack includes: The forward slip value corresponding to the current frame is determined based on the flattening radius, friction coefficient, inlet deformation resistance, outlet deformation resistance, preset inlet tension value, and preset outlet tension value corresponding to the current frame.
4. The method of claim 1, wherein, The target range for the forward slip optimization is 0.7%-1.2%.
5. A device for determining the tension of a rolling stand, characterized in that The device includes: The acquisition unit is used to acquire the forward sliding optimization target range, the initial inlet tension value corresponding to the initial frame, the flattening radius corresponding to the current frame, and the preset outlet tension value corresponding to the current frame; The calculation unit is used to take the initial inlet tension value corresponding to the initial frame as the preset inlet tension value corresponding to the current frame, and calculate the forward sliding value corresponding to the current frame based on the flattening radius corresponding to the current frame, the preset inlet tension value corresponding to the current frame, and the preset outlet tension value corresponding to the current frame. The determining unit is configured to determine, based on the forward sliding optimization target range, the preset outlet tension value, and the forward sliding value, the target outlet tension value corresponding to the current rack and the preset inlet tension value corresponding to the next rack, including: if the forward sliding value corresponding to the current rack belongs to the forward sliding optimization target range, then the preset outlet tension value is determined to be the target outlet tension value corresponding to the current rack; if the sequence number corresponding to the current rack is not equal to a preset threshold, then the target outlet tension value is used as the preset inlet tension value corresponding to the next rack. The loop unit is used to take the next rack as the current rack and re-execute the step of calculating the forward sliding value of the current rack based on the flattening radius, the preset inlet tension value and the preset outlet tension value of the current rack, until the sequence number of the current rack is equal to the preset threshold. The device is further configured to: if the forward slip value does not fall within the forward slip optimization target range, determine a new preset outlet tension value based on the preset tension increment and the preset outlet tension value; if the new preset outlet tension value is less than or equal to the maximum outlet tension value corresponding to the current rack, re-execute the step of calculating the forward slip value corresponding to the current rack based on the flattening radius corresponding to the current rack, the preset inlet tension value corresponding to the current rack, and the preset outlet tension value corresponding to the current rack; The device is further configured to, if the new preset outlet tension value is greater than the maximum outlet tension value corresponding to the current rack, use the maximum outlet tension value corresponding to the current rack as the target outlet tension value corresponding to the current rack; if the sequence number corresponding to the current rack is not equal to the preset threshold, use the target outlet tension value as the preset inlet tension value corresponding to the next rack.
6. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores at least one piece of program code, which is loaded and executed by a processor to perform the operations performed by the method as described in any one of claims 1 to 4.
7. An electronic device, comprising: The electronic device includes one or more processors and one or more memories, wherein at least one piece of program code is stored in the one or more memories, and the at least one piece of program code is loaded and executed by the one or more processors to perform the operation performed by the method as described in any one of claims 1 to 4.