A rolling mill speed adjusting method, device, medium and electronic equipment

Abstract

The application relates to the technical field of acid pickling plate shape, and discloses a rolling mill speed adjusting method, device, medium and electronic equipment. The method comprises the following steps: acquiring the current speed of a rolling mill during automatic speed reduction and the current loop sleeve volume of the rolling mill; adjusting the current speed based on the current loop sleeve volume to obtain the first adjusting speed of the rolling mill; acquiring the current reduction rate of the rolling mill, the inlet raw material thickness of the rolling mill and the rack outlet thickness of the rolling mill; determining the second adjusting speed of the rolling mill based on the current reduction rate, the first adjusting speed, the inlet raw material thickness and the rack outlet thickness; and reducing the speed of the rolling mill according to the second adjusting speed. The application can reduce the speed of the rolling mill through the second adjusting speed, so that the speed of the rolling mill does not suddenly change during automatic speed reduction, and the plate shape quality problem caused by inaccurate speed reduction is solved.

Description

Technical Field

[0001] This application relates to the field of pickling and rolling technology, and in particular to a method, apparatus, medium, and electronic equipment for adjusting rolling mill speed. Background Technology

[0002] As the market evolves and tinplate products trend towards thinner profiles, higher demands are placed on sheet shape quality. Localized waviness in pickled and rolled cold-hardened tinplate not only easily causes misalignment and strip breakage in the annealing unit but also leads to sheet shape quality issues in the final product. This localized waviness in pickled and rolled tinplate is primarily caused by the speed adjustments of the width-adjusting mill. When the width is adjusted, the edge trimmer needs to cut a crescent shape. Due to the limited looper capacity, this triggers a mill speed reduction. The original mill speed reduction program was semi-automatic, requiring manual input and modification by the operator. Because the high mill speed leads to a rapid reduction in looper capacity, relying on manual speed adjustments by the main operator to reduce sudden changes in sheet shape is difficult to achieve reliably. When the sudden changes in sheet shape exceed the release standard, rework and removal are necessary, severely impacting the yield and first-pass yield. Summary of the Invention

[0003] This application provides a rolling mill speed adjustment method, device, medium, and electronic equipment, which can reduce sudden changes in plate shape by obtaining a second adjustment speed, thereby solving the plate shape quality problem caused by inaccurate speed reduction.

[0004] 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.

[0005] According to one aspect of the embodiments of this application, a method for adjusting the speed of a rolling mill is provided, the method comprising:

[0006] The current speed of the rolling mill during the automatic deceleration process and the current looper quantity of the rolling mill are obtained;

[0007] The current speed is adjusted based on the current looper quantity to obtain the first adjustment speed of the rolling mill;

[0008] Obtain the current reduction rate of the rolling mill, the inlet material thickness of the rolling mill, and the stand exit thickness of the rolling mill;

[0009] The second adjustment speed of the mill is determined based on the current reduction rate, the first adjustment speed, the inlet raw material thickness, and the stand outlet thickness;

[0010] The mill is slowed down according to the second adjustment speed.

[0011] In one embodiment of this application, based on the foregoing scheme, adjusting the current speed based on the current looper quantity to obtain the first adjustment speed of the rolling mill includes:

[0012] Based on the current loop quantity and the preset speed-loop quantity relationship mapping table, determine whether the current speed matches the target speed range corresponding to the speed-loop quantity relationship mapping table;

[0013] If the current speed does not match the target speed range corresponding to the speed-quantity relationship mapping table, the current speed will be adjusted to the target speed corresponding to the target speed range.

[0014] The target speed is determined as the first adjustment speed;

[0015] If the current speed matches the target speed range in the speed-quantity relationship mapping table, the current speed is determined as the first adjustment speed.

[0016] In one embodiment of this application, based on the foregoing scheme, determining whether the current speed matches the target speed range corresponding to the speed-loop quantity relationship mapping table based on the current loop quantity and a preset speed-loop quantity relationship mapping table includes:

[0017] Find the target speed range corresponding to the current loop quantity in the speed-loop quantity mapping table;

[0018] Determine whether the current speed is within the target speed range;

[0019] If the current speed is within the target speed range, it is determined that the current speed matches the target speed range corresponding to the speed-quantity relationship mapping table.

[0020] In one embodiment of this application, based on the foregoing scheme, determining the second adjustment speed of the rolling mill based on the current reduction rate, the first adjustment speed, the inlet raw material thickness, and the stand exit thickness includes:

[0021] The adjustment coefficient of the first adjustment speed is calculated based on the thickness of the inlet raw material, the thickness of the frame outlet, and a preset coefficient.

[0022] The target reference speed of the rolling mill is determined based on the current reduction rate and the first adjustment speed.

[0023] The second adjustment speed is determined based on the target reference speed and the adjustment coefficient.

[0024] In one embodiment of this application, based on the foregoing scheme, the step of calculating the adjustment coefficient of the first adjustment speed based on the inlet raw material thickness, the rack outlet thickness, and a preset coefficient includes:

[0025] The adjustment coefficient is obtained by multiplying the preset coefficient by the thickness of the inlet raw material and dividing by the thickness of the frame outlet.

[0026] In one embodiment of this application, based on the foregoing scheme, determining the target reference speed of the rolling mill based on the current reduction rate and the first adjustment speed includes:

[0027] Determine whether the first adjustment speed matches the mapping speed corresponding to the current reduction rate;

[0028] If the first adjustment speed does not match the mapping speed corresponding to the current reduction rate, the mapping speed shall be used as the target reference speed;

[0029] If the first adjustment speed matches the mapping speed corresponding to the current reduction rate, the first adjustment speed is used as the target reference speed.

[0030] In one embodiment of this application, based on the foregoing scheme, before obtaining the current speed of the rolling mill during the automatic speed reduction process and the current looper quantity of the rolling mill, the method further includes:

[0031] The rolling mill is cleaned by spot spraying cleaning device.

[0032] According to one aspect of the embodiments of this application, a mill speed adjustment device is provided. The device includes: a first acquisition unit, configured to acquire the current speed of the mill during an automatic speed reduction process and the current looper quantity of the mill; a first adjustment unit, configured to adjust the current speed based on the current looper quantity to obtain a first adjustment speed of the mill; a second acquisition unit, configured to acquire the current reduction rate of the mill, the inlet material thickness of the mill, and the stand exit thickness of the mill; a second adjustment unit, configured to determine a second adjustment speed of the mill based on the current reduction rate, the first adjustment speed, the inlet material thickness, and the stand exit thickness; and a speed reduction unit, configured to reduce the speed of the mill according to the second adjustment speed.

[0033] According to one aspect of the embodiments of this application, a computer-readable storage medium is provided having a computer program stored thereon, the computer program including executable instructions that, when executed by a processor, implement the mill speed adjustment method as described in the above embodiments.

[0034] According to one aspect of the embodiments of this application, an electronic device is provided, comprising: one or more processors; and a memory for storing executable instructions of the processors, wherein when the executable instructions are executed by the one or more processors, the one or more processors implement the mill speed adjustment method as described in the above embodiments.

[0035] In the technical solution of this application embodiment, the current speed of the rolling mill during the automatic deceleration process and the current looper quantity of the rolling mill can be obtained. Then, the current speed of the rolling mill can be adjusted according to different looper quantities to obtain a corresponding first adjustment speed. The obtained first adjustment speed is used to quickly determine the required speed adjustment range. Then, by obtaining the current reduction rate of the rolling mill, the inlet material thickness of the rolling mill, and the stand exit thickness of the rolling mill, the first adjustment speed is further adjusted to obtain a second adjustment speed. This second adjustment speed is a precise adjustment speed, which can be used to decelerate the rolling mill to ensure that the speed does not change abruptly during automatic deceleration, thereby solving the plate shape quality problem caused by inaccurate deceleration.

[0036] 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

[0037] 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:

[0038] Figure 1 This is a flowchart illustrating a mill speed adjustment method according to an embodiment of this application;

[0039] Figure 2 This is a flowchart illustrating how the current speed is adjusted based on the current looper quantity to obtain the first adjustment speed of the rolling mill, as shown in the embodiments of this application.

[0040] Figure 3 This is a block diagram illustrating a mill speed adjustment device according to an embodiment of this application;

[0041] Figure 4 This is a schematic diagram of the system structure of an electronic device according to an embodiment of this application. Detailed Implementation

[0042] 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.

[0043] 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.

[0044] 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 node devices.

[0045] 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.

[0046] 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.

[0047] The implementation details of the technical solutions in the embodiments of this application are described in detail below:

[0048] First, it should be noted that the mill speed adjustment scheme proposed in this application can be applied to the related technical field of pickling and rolling sheet shape. Looping quantity can be expressed as a percentage, and the target required mill speed varies with different looping quantity percentages. When the looping quantity percentage is 100%, the corresponding mill speed at the start of automatic speed reduction should be 1600 m / min. As automatic speed reduction begins, the looping quantity continuously decreases, meaning the percentage corresponding to the looping quantity also gradually decreases. At this time, the corresponding mill speed also continuously decreases. However, the mill speed should decrease gradually in small increments rather than drastically. A drastic decrease in mill speed would cause a sudden speed change, leading to local waviness and resulting in sheet shape quality problems.

[0049] This application can obtain the current speed of the rolling mill during the automatic deceleration process and the current looper quantity of the rolling mill, and then adjust the current speed of the rolling mill according to different looper quantities to obtain a corresponding first adjustment speed. The obtained first adjustment speed is used to quickly determine the required speed adjustment range. Then, by obtaining the current reduction rate of the rolling mill, the inlet material thickness of the rolling mill, and the stand exit thickness of the rolling mill, the first adjustment speed is further adjusted to obtain a second adjustment speed. The second adjustment speed obtained at this time is a precise adjustment speed. The rolling mill can be decelerated using the second adjustment speed to ensure that the speed of the rolling mill does not change abruptly during automatic deceleration, thereby solving the plate shape quality problem caused by inaccurate deceleration.

[0050] According to one aspect of this application, a method for adjusting the speed of a rolling mill is provided. Figure 1 The flowchart illustrates a mill speed adjustment method according to an embodiment of this application. This mill speed adjustment method includes at least steps 110 to 150, which are described in detail below:

[0051] In step 110, the current speed of the rolling mill during the automatic deceleration process and the current looper quantity of the rolling mill are obtained.

[0052] Specifically, the looper quantity can be expressed as a percentage. The target mill speed varies depending on the looper quantity percentage. When the looper quantity percentage is 100%, the corresponding mill speed at the start of automatic speed reduction should be 1600 m / min. As automatic speed reduction begins, the looper quantity continuously decreases, meaning the corresponding percentage also gradually decreases. The mill speed should decrease gradually, but not drastically. A sudden decrease in mill speed would cause abrupt changes, leading to localized waviness and quality issues with the plate shape.

[0053] For example, if the current looper percentage is 95%, the corresponding target speed is 1300 m / min. However, if the mill speed is only 1000 m / min, it indicates a sudden speed change during automatic deceleration, which can lead to local waviness and quality issues with the plate shape. Therefore, this application requires precise speed adjustment based on different looper percentages to prevent local waviness problems.

[0054] In step 120, the current speed is adjusted based on the current looper quantity to obtain the first adjustment speed of the rolling mill.

[0055] In one embodiment of this application, see Figure 2Step 120 can be performed according to steps S1-S4:

[0056] Step S1: Based on the current loop quantity and the preset speed-loop quantity relationship mapping table, determine whether the current speed matches the target speed range corresponding to the speed-loop quantity relationship mapping table.

[0057] Step S2: If the current speed does not match the target speed range corresponding to the speed-quantity relationship mapping table, adjust the current speed to the target speed corresponding to the target speed range.

[0058] Step S3: Determine the target speed as the first adjustment speed.

[0059] Step S4: If the current speed matches the target speed range in the speed-quantity relationship mapping table, the current speed is determined as the first adjustment speed.

[0060] Looping quantity percentage range (%) Target speed required for the rolling mill (mpm) 0-39.9 400 40-59.9 600 60-69.9 800 70-79.9 1000 80-89.9 1200 90-99.9 1400

[0061] Table 1

[0062] Specifically, as shown in Table 1 above, Table 1 is a preset speed-loop quantity relationship mapping table. The required speed for different targets can be determined according to the percentage range of the loop quantity. If the percentage of the loop quantity drops from 90% to 80%, the speed at this time is 1000mpm (meters / minute), while the required speed for the target corresponding to 80% of the loop quantity in the table is 1200mpm (meters / minute). This indicates that the speed has changed abruptly, which will cause local wavy problems. At this time, the first adjustment speed needs to be determined as 1200mpm (meters / minute). The first adjustment speed of 1200mpm is used as an approximate speed to improve the calculation efficiency for determining the subsequent second adjustment speed.

[0063] In one embodiment of this application, determining whether the current speed matches the target speed range in the speed-loop quantity mapping table based on the current loop quantity and a preset speed-loop quantity mapping table includes:

[0064] Find the target speed range corresponding to the current loop quantity in the speed-loop quantity mapping table;

[0065] Determine whether the current speed is within the target speed range;

[0066] If the current speed is within the target speed range, it is determined that the current speed matches the target speed range corresponding to the speed-quantity relationship mapping table.

[0067] Specifically, the required speed for different targets can be determined based on the percentage range of the looper quantity. If the percentage of the looper quantity decreases from 70% to 50%, the speed at this time is 600 m / min. The required speed for the target corresponding to 50% looper quantity in the table is also 600 m / min. This indicates that the speed has not changed abruptly. At this time, the first adjustment speed is set to 600 m / min. However, the first adjustment speed of 600 m / min is only an approximate adjustment speed. A more precise adjustment speed is needed to ensure that the subsequent deceleration process will not have abrupt changes.

[0068] In step 130, the current reduction rate of the mill, the inlet material thickness of the mill, and the stand exit thickness of the mill are obtained.

[0069] Specifically, the reduction ratio is the thickness before rolling minus the thickness after rolling, then divided by the thickness before rolling.

[0070] For example, if the inlet thickness is 2.0 mm and the outlet thickness is 0.45 mm, the calculation formula is 2.0 - 0.45 = 1.55, and then 1.55 ÷ 2 = 0.775, which gives a reduction rate of 77.5%. The adjustment coefficient mentioned below can be easily calculated using the inlet material thickness and the outlet thickness of the mill stand.

[0071] In step 140, the second adjustment speed of the mill is determined based on the current reduction rate, the first adjustment speed, the inlet raw material thickness, and the stand outlet thickness.

[0072] In one embodiment of this application, determining the second adjustment speed of the rolling mill based on the current reduction rate, the first adjustment speed, the inlet raw material thickness, and the stand exit thickness includes:

[0073] The adjustment coefficient of the first adjustment speed is calculated based on the thickness of the inlet raw material, the thickness of the frame outlet, and a preset coefficient.

[0074] The target reference speed of the rolling mill is determined based on the current reduction rate and the first adjustment speed.

[0075] The second adjustment speed is determined based on the target reference speed and the adjustment coefficient.

[0076] In one embodiment of this application, the step of calculating the adjustment coefficient of the first adjustment speed based on the inlet raw material thickness, the rack outlet thickness, and a preset coefficient includes:

[0077] The adjustment coefficient is obtained by multiplying the preset coefficient by the thickness of the inlet raw material and dividing by the thickness of the frame outlet.

[0078] Specifically, during edge trimming and width adjustment, the distance from the weld seam to the mill is constant. However, due to different reduction rates in rolling specifications, controlling the speed output with a fixed value would lead to varying mill inlet speeds, resulting in significant differences in mill deceleration times and affecting the normal operation of the mill's automatic deceleration function. Therefore, the adjustment coefficient is obtained by multiplying the preset coefficient by the inlet raw material thickness and dividing by the stand outlet thickness. The preset coefficient can be 0.1, but it should be noted that in other embodiments, the preset coefficient can be 0.2, 0.4, 0.5, etc., and the preset coefficient is not limited.

[0079] The target reference speed can be adjusted using the obtained adjustment coefficient to obtain the corresponding second adjustment speed. This is achieved by adding the adjustment coefficient before the rolling speed output value, i.e., the target reference speed, to ensure that the mill deceleration time is basically consistent for different steel grades with different reduction rates. The target reference speed is determined by the current reduction rate and the first adjustment speed.

[0080] In one embodiment of this application, determining the target reference speed of the rolling mill based on the current reduction rate and the first adjustment speed includes:

[0081] Determine whether the first adjustment speed matches the mapping speed corresponding to the current reduction rate;

[0082] If the first adjustment speed does not match the mapping speed corresponding to the current reduction rate, the mapping speed shall be used as the target reference speed;

[0083] If the first adjustment speed matches the mapping speed corresponding to the current reduction rate, the first adjustment speed is used as the target reference speed.

[0084] Specifically, the mapping speed varies depending on the compression rate. For example, if the current compression rate is 40%, the corresponding mapping speed is 580 m / min. However, if the first adjustment speed is set to 600 m / min, the first adjustment speed does not match the mapping speed corresponding to the current compression rate. In this case, the mapping speed of 580 m / min is used as the target reference speed. As another example, if the current compression rate is 80%, the corresponding mapping speed is 1000 m / min. If the first adjustment speed is also set to 1000 m / min, the first adjustment speed matches the mapping speed corresponding to the current compression rate. In this case, the first adjustment speed of 1000 m / min is used as the target reference speed.

[0085] In step 150, the mill is slowed down according to the second adjustment speed.

[0086] Specifically, since different percentages of looper amount will result in different second adjustment speeds, this application maps the percentage of looper amount to different second adjustment speeds to ensure that different mill speeds can be determined based on the percentage of looper amount during automatic deceleration, so that the mill can decelerate in an orderly manner and prevent sudden changes in mill speed, thereby solving the problem of local waviness caused by inaccurate speed control.

[0087] In one embodiment of this application, before obtaining the current speed of the rolling mill during the automatic deceleration process and the current looper quantity of the rolling mill, the method further includes:

[0088] The rolling mill is cleaned by spot spraying cleaning device.

[0089] Specifically, the localized waviness of the pickled and rolled substrate can also be caused by blockage in the spraying system. When the spraying system is stopped during operations such as changing sector plates, iron powder and ash accumulate on the spraying beams and nozzles, causing blockage and preventing normal operation, resulting in localized waviness at the corresponding locations. Historically, this has involved significant manpower and downtime for manual cleaning of the spraying system with unsatisfactory results. This application, however, utilizes a spraying cleaning device to perform spraying cleaning on the rolling mill, ensuring that blockages do not occur during spraying and thus preventing localized waviness due to spraying blockage.

[0090] Furthermore, by developing a spot spray auto clean mode, the time spent disassembling and assembling sector blocks during production or maintenance is utilized to frequently activate the spot spray with clean emulsion, activating for 30 seconds, deactivating for 30 seconds, and rinsing for 30 minutes. This effectively cleans residual oil and sludge from the spot spray nozzles, ultimately achieving automatic cleaning of all spot spray nozzles. During each stand change, before the mill is zeroed and officially started, the cleaning mode is automatically activated sequentially to ensure the sensitivity of the spot spray and promptly eliminate localized waviness.

[0091] In summary, this application can prevent the generation of local waviness in two ways. Firstly, it employs a highly efficient point-spray cleaning method, developing a stand-mounted point-spray self-cleaning program. During prolonged shutdowns, this self-cleaning process is periodically activated to prevent iron powder and sludge from drying and accumulating, causing nozzle blockage and reducing the workload of mill operators and point-spray cleaning personnel. Secondly, during wide-range speed adjustments, the semi-automatic speed reduction is optimized to automatic segmented speed reduction of the mill. This reduces sudden changes in sheet shape caused by variations in emulsion lubrication due to sudden speed changes, improves local waviness, reduces waviness rework, and enhances the operational stability of the annealing unit, pickling yield, and product quality.

[0092] This application can obtain the current speed of the rolling mill during the automatic deceleration process and the current looper quantity of the rolling mill, and then adjust the current speed of the rolling mill according to different looper quantities to obtain a corresponding first adjustment speed. The obtained first adjustment speed is used to quickly determine the required speed adjustment range. Then, by obtaining the current reduction rate of the rolling mill, the inlet material thickness of the rolling mill, and the stand exit thickness of the rolling mill, the first adjustment speed is further adjusted to obtain a second adjustment speed. The second adjustment speed obtained at this time is a precise adjustment speed. The rolling mill can be decelerated using the second adjustment speed to ensure that the speed of the rolling mill does not change abruptly during automatic deceleration, thereby solving the plate shape quality problem caused by inaccurate deceleration.

[0093] Figure 3 The diagram shows a rolling mill speed adjustment device 300 according to an embodiment of the present application. The rolling mill speed adjustment device 300 according to an embodiment of the present application includes: a first acquisition unit 301, a first adjustment unit 302, a second acquisition unit 303, a second adjustment unit 304, and a speed reduction unit 305.

[0094] The first acquisition unit 301 is used to acquire the current speed of the rolling mill during the automatic deceleration process and the current looper quantity of the rolling mill.

[0095] The first adjustment unit 302 is used to adjust the current speed based on the current looper quantity to obtain the first adjustment speed of the rolling mill.

[0096] The second acquisition unit 303 is used to acquire the current reduction rate of the rolling mill, the inlet material thickness of the rolling mill, and the stand exit thickness of the rolling mill.

[0097] The second adjustment unit 304 is used to determine the second adjustment speed of the mill based on the current reduction rate, the first adjustment speed, the inlet raw material thickness, and the stand outlet thickness.

[0098] The speed reduction unit 305 is used to reduce the speed of the rolling mill according to the second adjustment speed.

[0099] In another aspect, this application also provides a computer-readable storage medium storing a program product capable of implementing the methods provided 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 "Embodiment Methods" section of this specification according to various exemplary embodiments of this application.

[0100] The program product for implementing the above-described method according to the embodiments of this application may employ a portable compact disc read-only memory (CD-ROM) and include program code, and may run on a terminal device, such as a personal computer. However, the program product of this application is not limited thereto. In this document, the readable storage medium may be any tangible medium containing or storing a program that may be used by or in conjunction with an instruction execution system, apparatus, or device.

[0101] The program product may employ any combination of one or more readable media. A readable medium may be a readable signal medium or a readable storage medium. A readable storage medium may be, for example, but not limited to, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination thereof. More specific examples of readable storage media (a non-exhaustive list) include: an electrical connection having one or more wires, a portable disk, a hard disk, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), optical fiber, portable compact disk read-only memory (CD-ROM), optical storage devices, magnetic storage devices, or any suitable combination thereof.

[0102] 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.

[0103] 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.

[0104] 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).

[0105] In another respect, this application also provides an electronic device capable of implementing the above-described method.

[0106] 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."

[0107] The following reference 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.

[0108] 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).

[0109] 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.

[0110] 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.

[0111] 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.

[0112] Bus 430 can represent one or more of several types of bus structures, including a memory cell bus or memory cell control node, a peripheral bus, a graphics acceleration port, a processing unit, or a local bus using any of the various bus structures.

[0113] 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.

[0114] 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.

[0115] 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.

[0116] 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 adjusting the speed of a rolling mill, characterized in that, The method includes: The current speed of the rolling mill during the automatic deceleration process and the current looper quantity of the rolling mill are obtained; Adjusting the current speed based on the current looper quantity to obtain a first adjustment speed for the rolling mill includes: determining whether the current speed matches a target speed range in the speed-looper quantity mapping table based on the current looper quantity and a preset speed-looper quantity relationship mapping table; if the current speed does not match the target speed range, adjusting the current speed to the target speed corresponding to the target speed range, and determining the target speed as the first adjustment speed; if the current speed matches the target speed range, determining the current speed as the first adjustment speed. Obtain the current reduction rate of the rolling mill, the inlet material thickness of the rolling mill, and the stand exit thickness of the rolling mill; Determining the second adjustment speed of the rolling mill based on the current reduction rate, the first adjustment speed, the inlet raw material thickness, and the stand exit thickness includes: calculating an adjustment coefficient for the first adjustment speed based on the inlet raw material thickness, the stand exit thickness, and a preset coefficient; determining a target reference speed for the rolling mill based on the current reduction rate and the first adjustment speed; and determining the second adjustment speed based on the target reference speed and the adjustment coefficient. The mill is slowed down according to the second adjustment speed.

2. The mill speed adjustment method according to claim 1, characterized in that, The step of determining whether the current speed matches the target speed range in the speed-looping relationship mapping table based on the current loop quantity and a preset speed-looping quantity relationship mapping table includes: Find the target speed range corresponding to the current loop quantity in the speed-loop quantity mapping table; Determine whether the current speed is within the target speed range; If the current speed is within the target speed range, it is determined that the current speed matches the target speed range corresponding to the speed-quantity relationship mapping table.

3. The mill speed adjustment method according to claim 1, characterized in that, The adjustment coefficient for the first adjustment speed is calculated based on the inlet material thickness, the rack outlet thickness, and a preset coefficient, including: The adjustment coefficient is obtained by multiplying the preset coefficient by the thickness of the inlet raw material and dividing by the thickness of the frame outlet.

4. The mill speed adjustment method according to claim 3, characterized in that, Determining the target reference speed of the rolling mill based on the current reduction rate and the first adjustment speed includes: Determine whether the first adjustment speed matches the mapping speed corresponding to the current reduction rate; If the first adjustment speed does not match the mapping speed corresponding to the current reduction rate, the mapping speed shall be used as the target reference speed; If the first adjustment speed matches the mapping speed corresponding to the current reduction rate, the first adjustment speed is used as the target reference speed.

5. The mill speed adjustment method according to claim 1, characterized in that, Before acquiring the current speed of the mill during the automatic deceleration process and the current looper quantity of the mill, the method further includes: The rolling mill is cleaned by spot spraying cleaning device.

6. A rolling mill speed adjustment device, characterized in that, The device includes: The first acquisition unit is used to acquire the current speed of the rolling mill during the automatic deceleration process and the current looper quantity of the rolling mill. The first adjustment unit is used to adjust the current speed based on the current looper quantity to obtain a first adjustment speed of the rolling mill. The adjustment includes: determining whether the current speed matches a target speed range in the speed-looper quantity mapping table based on the current looper quantity and a preset speed-looper quantity relationship mapping table; if the current speed does not match the target speed range, adjusting the current speed to the target speed corresponding to the target speed range, and determining the target speed as the first adjustment speed; if the current speed matches the target speed range, determining the current speed as the first adjustment speed. The second acquisition unit is used to acquire the current reduction rate of the rolling mill, the inlet material thickness of the rolling mill, and the stand exit thickness of the rolling mill. The second adjustment unit is used to determine the second adjustment speed of the rolling mill based on the current reduction rate, the first adjustment speed, the inlet raw material thickness, and the stand exit thickness. The adjustment unit includes: calculating an adjustment coefficient for the first adjustment speed based on the inlet raw material thickness, the stand exit thickness, and a preset coefficient; determining a target reference speed for the rolling mill based on the current reduction rate and the first adjustment speed; and determining the second adjustment speed based on the target reference speed and the adjustment coefficient. A speed reduction unit is used to reduce the speed of the rolling mill according to the second adjustment speed.

7. 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 5.

8. An electronic device, characterized in that, 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 5.

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