Method for avoiding deviation and belt breakage in cold continuous rolling variable gauge and related equipment

Abstract

The application discloses a method and related equipment for avoiding deviation and strip breakage in cold continuous rolling size change, and relates to the technical field of automatic control in a rolling process.The method comprises the following steps: obtaining a steel grade mark; determining an adjustment plan suitable for rolling completion of a cold continuous rolling mill according to a preset steel grade transition rule based on the steel grade mark, wherein the preset steel grade transition rule is constructed based on a steel grade material corresponding to the steel grade mark, and the adjustment plan comprises production parameters of steel to be adjusted; determining whether steel grade materials of adjacent steel grades in the adjustment plan meet preset transition requirements; and performing cold continuous rolling on the steel based on the adjustment plan in the case that the steel grade materials of the adjacent steel grades meet the preset transition requirements.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of automatic control of rolling process, and in particular to a method for avoiding deviation and strip breakage in cold continuous rolling size change and related equipment. BACKGROUND

[0002] At present, with the continuous development of industry, the demand for high-strength steel varieties continues to rise in many fields. High-strength steel varieties play a crucial role in the automotive manufacturing, aerospace, construction engineering and other industries due to their excellent performance, such as high strength, good toughness and corrosion resistance. With the rapid increase in production of high-strength steel varieties and the rapid expansion of product specifications, market competition is becoming increasingly fierce.

[0003] However, in the production process, due to the delivery period and inventory tension, it is not possible to ensure that the rolling mill has suitable transition material every time the size changes. This situation has brought many problems to production, seriously affecting production efficiency and product quality. During the rolling size change of the front and rear coil welds, due to the large change in rolling parameters, undesirable situations such as rolling leakage, deviation, and roll pressing often occur. Each time the strip breaks, about 5 tons of waste products are caused, and the operation time is affected for 30 minutes. Once the deviation and strip breakage caused by the transition problem of the rolling mill took as long as 36 hours to handle. In addition, roll marks often occur during the start and stop of the rolling mill, further affecting production operation and product quality. Therefore, it is necessary to propose a method for avoiding deviation and strip breakage in cold continuous rolling size change, to at least solve some of the above problems. SUMMARY

[0004] A series of simplified concepts are introduced in the summary section, which will be further described in detail in the specific embodiments section. The summary section of the present application does not mean to attempt to limit the key features and necessary technical features of the claimed technical solutions, nor does it mean to attempt to determine the protection scope of the claimed technical solutions.

[0005] In a first aspect, the embodiments of the present application provide a method for avoiding deviation and strip breakage in cold continuous rolling size change, the method comprising:

[0006] obtaining a steel grade;

[0007] based on the steel grade, determining an adjustment plan suitable for rolling completion of the cold continuous rolling mill according to a preset steel grade transition rule, the preset steel grade transition rule being constructed based on the steel grade material corresponding to the steel grade, and the adjustment plan including production parameters of the steel material to be adjusted;

[0008] determining whether the steel grade materials of adjacent steel grades in the adjustment plan meet the preset transition requirements;

[0009] based on the adjustment plan, cold continuous rolling of the steel material under the condition that the steel grade materials of adjacent steel grades meet the preset transition requirements.

[0010] In an embodiment of the present application, the step of obtaining the steel grade mark comprises:

[0011] obtaining an initial steel grade mark;

[0012] detecting and analyzing the steel material corresponding to the steel grade mark to obtain an analysis result;

[0013] subdividing the initial steel grade mark according to the analysis result to obtain a steel grade mark.

[0014] In an embodiment of the present application, the step of cold continuous rolling the steel material based on the adjustment plan comprises:

[0015] adjusting the numerical value of the roll gap of the mill for rolling the steel material to obtain a first adjustment result;

[0016] adjusting the mill tension value based on the first adjustment result to obtain a second adjustment result;

[0017] obtaining a roll shifting change amount based on the second adjustment result;

[0018] operating the additional bending roll compensation roll shifting based on the roll shifting change amount to obtain an operation result;

[0019] adjusting the weld of the steel material based on the operation result to obtain a first adjustment result;

[0020] adjusting the specification of the steel material based on the first adjustment result to obtain a second adjustment result;

[0021] cold continuous rolling the steel material based on the second adjustment result.

[0022] In an embodiment of the present application, the step of adjusting the specification of the steel material based on the first adjustment result to obtain a second adjustment result comprises:

[0023] adjusting the yield strength of the steel material to within a preset yield strength, adjusting the rolling force of the mill for rolling the steel material to a preset rolling force, adjusting the roll gap change amount of the mill to a preset threshold value, increasing the tension of the mill by a preset ratio, adjusting the fine gap control speed of the mill to a preset speed, adjusting the bending roll force of the mill to a preset bending roll force, and adjusting the rolling speed of the steel material based on the first adjustment result to obtain a second adjustment result.

[0024] In an embodiment of the present application, the method further comprises:

[0025] obtaining a steel material quality corresponding to the steel grade mark;

[0026] classifying the steel material quality to obtain a classification result;

[0027] determine a preset steel grade transition rule based on the classification result.

[0028] In an embodiment of the present application, the step of determining a preset steel grade transition rule based on the classification result comprises:

[0029] determining a transition material according to the classification result of the steel grade material;

[0030] In a case where the steel grade materials corresponding to any two steel grade marks reach the transition material, it is determined that the steels corresponding to the any two steel grade marks can be connected when rolling using the tandem cold rolling mill.

[0031] In an embodiment of the present application, the preset yield strength is 200 Mpa.

[0032] In a second aspect, the present application provides a system for avoiding deviation and belt breakage in cold rolling size change, comprising a data acquisition module, a judgment module and a rolling module.

[0033] The data acquisition module is configured to acquire steel grade marks, and determine an adjustment plan suitable for rolling completion of the tandem cold rolling mill based on the steel grade marks and according to a preset steel grade transition rule, the preset steel grade transition rule being constructed based on steel grade materials corresponding to the steel grade marks, and the adjustment plan comprising production parameters of steel materials to be adjusted.

[0034] The judgment module is configured to determine whether the steel grade materials of adjacent steels in the adjustment plan meet preset transition requirements.

[0035] The rolling module is configured to perform cold rolling on the steels based on the adjustment plan in a case where the steel grade materials of the adjacent steels meet the preset transition requirements.

[0036] In a third aspect, an electronic device is provided, comprising a memory, a processor and a computer program stored in the memory and executable on the processor, and the processor is configured to execute the computer program stored in the memory to implement the steps of the method for avoiding deviation and belt breakage in cold rolling size change according to any one of the first aspect.

[0037] In a fourth aspect, the present application further provides a computer readable storage medium having a computer program stored thereon, and the computer program is executable by a processor to implement the steps of the method for avoiding deviation and belt breakage in cold rolling size change according to any one of the first aspect.

[0038] To sum up, the method for avoiding deviation and strip breakage in cold continuous rolling size change provided by the embodiment of the application determines an adjustment plan suitable for rolling completion of a cold continuous rolling mill through preset steel grade transition rules, and cold continuous rolling is performed on the steel based on the adjustment plan in the case that the steel grade material of adjacent steel grades meets preset transition requirements, thereby reducing empty coils and strip breakage caused by transition.

[0039] The method for avoiding deviation and strip breakage in cold continuous rolling size change provided by the application, other advantages, objects and features of the application will be embodied in part through the following description, and will be understood by those skilled in the art through research and practice of the application. BRIEF DESCRIPTION OF DRAWINGS

[0040] Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The accompanying drawings are included to provide a description of the preferred embodiments and are not intended to limit the scope of the present description. Moreover, the same reference numerals are used throughout the same figures. In the drawings:

[0041] Figure 1 A flowchart of a method for avoiding deviation and strip breakage in cold continuous rolling size change provided by the embodiment of the application is shown in FIG. 1.

[0042] Figure 2 A system structure diagram of a method for avoiding deviation and strip breakage in cold continuous rolling size change provided by the embodiment of the application is shown in FIG. 2.

[0043] Figure 3 An electronic device structure diagram of a method for avoiding deviation and strip breakage in cold continuous rolling size change provided by the embodiment of the application is shown in FIG. 3. DETAILED DESCRIPTION

[0044] In order to better understand the technical solutions provided by the embodiments of the present application, the technical solutions of the embodiments of the present application will be described in detail below with the aid of the accompanying drawings and specific embodiments. It should be understood that the specific features in the embodiments of the present application and the specific embodiments are detailed descriptions of the technical solutions of the embodiments of the present application, and are not limitations of the technical solutions of the present application. In the case of no conflict, the technical features in the embodiments of the present application and the specific embodiments can be combined with each other.

[0045] In this document, relational terms such as first and second and the like can be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus. An element proceeded by "comprises... a" does not, without more constraints, exclude the existence of additional identical elements in the process, method, article, or apparatus that comprises the element. The terms "two or more" and "two or more than two" include both the recited number of units and also any number greater than the recited number of units.

[0046] Referring now to the drawings Figure 1 A method for avoiding deviation and strip breakage in cold continuous rolling of a variable gauge is provided, and the method can specifically include the following steps.

[0047] S110, obtaining a steel grade;

[0048] For example, an Excel template is prepared for plan review based on the obtained steel grade. In the template, some key parameters such as thickness, width, yield strength, and coiling temperature are selected according to actual needs. These parameters are very important for the rolling mill during production of a variable gauge, and the rationality and feasibility of the production plan can be better ensured through review and monitoring of these parameters. When the transition of parameters such as width, steel grade, and thickness occurs during production, an alarm is triggered if the transition is beyond the capacity of the rolling mill or if there is a risk. This can timely remind the operator of potential problems so that appropriate measures can be taken to ensure the safety and stability of production.

[0049] S120, determining an adjustment plan suitable for rolling completion of the cold continuous rolling mill based on the steel grade, according to a preset steel grade transition rule, the preset steel grade transition rule being constructed based on a steel grade material corresponding to the steel grade, and the adjustment plan including production parameters of the steel material to be adjusted;

[0050] Exemplarily, based on the steel grade mark, a transition rule of the preset steel grade is determined to determine an adjustment plan that enables the tandem cold mill to successfully complete the rolling of the steel. The transition rule of the preset steel grade is constructed according to the steel grade material corresponding to the steel grade mark, that is, different steel grade materials determine how to transition between different steel grades in the rolling process of the tandem cold mill. The adjustment plan is to ensure that the tandem cold mill can operate efficiently and stably when rolling different steel grades, and to produce products meeting the requirements. The adjustment plan includes various production parameters of the steel to be adjusted. By adjusting these production parameters, the tandem cold mill can adapt to the rolling requirements of different steel grades, and ensure the smooth progress of the production process and the stability of the product quality.

[0051] In S130, it is determined whether the steel grade materials of the adjacent steel grades in the adjustment plan meet the preset transition requirements.

[0052] Exemplarily, by determining whether the steel grade materials of the adjacent steel grades in the adjustment plan meet the preset transition requirements, the steel grade switching can be reasonably arranged in the production process, the production efficiency can be improved, the product quality can be ensured, and the production cost can be reduced.

[0053] In S140, the steel is cold-rolled based on the adjustment plan when the steel grade materials of the adjacent steel grades meet the preset transition requirements.

[0054] Exemplarily, when the steel grade materials of the adjacent steel grades meet the preset transition requirements, the steel is cold-rolled based on the adjustment plan, which can ensure the smooth progress of the production process, improve the product quality and the production efficiency.

[0055] In summary, the method for avoiding deviation and strip breakage in the tandem cold rolling size change proposed in the embodiments of the present application determines an adjustment plan suitable for the rolling completion of the tandem cold mill through the preset steel grade transition rule, and cold-rolls the steel based on the adjustment plan when the steel grade materials of the adjacent steel grades meet the preset transition requirements, thereby reducing the empty coil and strip breakage caused by the transition. The roll gap and tension changes during the steel grade transition are developed to be visual and adjustable on the HMI interface. The expanded steel grade fine classification improves the accuracy of the rolling parameter setting, and a specific adjustment plan for the size change is summarized. The steel grades for 2230 cold rolling production almost cover all domestic varieties, and the invention is more comprehensive and authoritative. The operation parameters are reliable, and the operation is more accurate and scientific compared with the previous experience-based operation.

[0056] In some examples, the step of obtaining the steel grade mark includes:

[0057] The initial steel grade mark is obtained.

[0058] The steel corresponding to the steel grade mark is detected and analyzed to obtain an analysis result.

[0059] According to the analysis result, the initial steel grade mark is subdivided to obtain a steel grade mark.

[0060] For example, the initial steel grade mark is a preliminary identification of the steel type. The steel corresponding to the steel grade mark is detected and analyzed to obtain an analysis result. Through the detection and analysis of the steel, it is found that different batches or different parts of the steel have differences in certain characteristics. According to these differences, that is, the analysis result, the initial steel grade mark is further subdivided to obtain a steel grade mark, so as to more accurately identify and distinguish steels with different characteristics.

[0061] The existing 77 initial steel grade marks are refined into 182 steel grade marks. The purpose of this is to avoid the use of one rolling parameter for similar steel grade marks. Because if similar steel grade marks share one rolling parameter, it will not be able to accurately meet the specific needs of each steel grade, and after refining the steel grade mark, more targeted parameters can be developed for each steel grade, thereby improving the accuracy of the settings.

[0062] In some examples, the step of cold continuous rolling the steel based on the adjustment plan comprises:

[0063] Adjusting the numerical value of the roll gap of the mill to obtain a first adjustment result;

[0064] Adjusting the mill tension value based on the first adjustment result to obtain a second adjustment result;

[0065] Based on the second adjustment result, obtain the roll shifting change amount;

[0066] Based on the roll shifting change amount, operate the additional bending roll compensation roll shifting to obtain an operation result;

[0067] Based on the operation result, adjust the weld of the steel to obtain a first adjustment result;

[0068] Based on the first adjustment result, adjust the specification of the steel to obtain a second adjustment result;

[0069] Based on the second adjustment result, cold continuous roll the steel.

[0070] For example, during cold continuous rolling, the size of the mill roll gap directly affects the thickness of the steel. By adjusting the numerical value of the mill roll gap, the degree of deformation of the steel during rolling can be changed, thereby achieving the desired steel thickness size. The 1-5# mill roll gap opening program is added to the HMI interface, which can be intervened to adjust. The roll gap opening is positive, the roll gap closing is negative, the limit amplitude is modified to ±1.0mm, the roll gap fluctuation during the transition of the front and rear coils is reduced, and a first adjustment result is obtained.

[0071] The stand tension has an important influence on the shape, size accuracy and rolling force distribution of the steel in the tandem cold rolling. After adjusting the roll gap value, the deformation of the steel changes accordingly, and the stand tension value needs to be adjusted. According to the influence of the roll gap adjustment in the first adjustment result, a suitable tension adjustment strategy is determined to ensure the stability and quality of the steel during rolling. The second adjustment result is obtained after adjustment. Specifically, the tension change judgment and intervention operation are increased: the tension difference alarm display before and after the coil is added to the HMI interface, prompting the operator to take speed reduction or manual tension adjustment measures according to different specifications, and manual intervention tension is realized.

[0072] Roll shifting is an operation to adjust the position of the roll, which can change the contact state of the roll and the steel, thereby affecting the shape and surface quality of the steel. According to the tension adjustment in the second adjustment result, the appropriate roll shifting amount is calculated. While performing the roll shifting operation, in order to further optimize the shape and quality of the steel, the additional bending roll compensation operation needs to be performed. According to the roll shifting amount, the additional bending roll compensation roll shifting operation is performed to ensure the shape stability and good surface quality of the steel during rolling. The operation result is obtained after the operation. Specifically, the next roll shifting change display and operation method are added: according to the next roll shifting change amount, the additional bending roll compensation roll shifting is operated.

[0073] According to the above operation result, the weld of the steel is adjusted, and the first adjustment result is obtained after adjustment. Specifically, the original weld is located at the position of 50% of the wedge transition zone, the strip steel changes from one specification to another, the rolling force is issued through the debugging of the second level model, and 80% of the wedge transition zone is completed on the weld before the high strength steel.

[0074] According to the first adjustment result of the weld adjustment, the specification of the steel is further adjusted to obtain the second adjustment result. Finally, according to the steel specification parameters and other production adjustment conditions in the second adjustment result, the tandem cold rolling operation of the steel is performed again.

[0075] In some examples, the step of adjusting the specification of the steel based on the first adjustment result to obtain the second adjustment result comprises:

[0076] Based on the first adjustment result, the yield strength of the steel is adjusted to be within the preset yield strength, the rolling force of the stand for rolling the steel is adjusted to be within the preset rolling force, the roll gap change amount of the stand is adjusted to be within the preset threshold value, the tension of the stand is increased by a preset ratio, the fine gap control speed of the stand is adjusted to be within the preset speed, the bending force of the stand is adjusted to be within the preset bending force, and the rolling speed of the steel is adjusted to obtain the second adjustment result.

[0077] For example, the yield strength is an important mechanical property index of steel, which reflects the stress value at which the steel begins to produce obvious plastic deformation under stress. According to the first adjustment result, it is found that the yield strength of the current steel is not within the ideal range, and needs to be adjusted. The yield strength of the steel is adjusted to be within the preset yield strength, and the outlet thickness is within 0.5 mm and the width is within 250 mm. The rolling force of the mill for rolling the steel is adjusted to the preset rolling force, that is, the unit rolling force of the rolling mill 5 mill is modified to 6.5 kn / mm (this value is the median value of the previous roll and the next roll, to prevent the rolling force from crossing too much to cause the plate shape to change suddenly). The roll gap change of the mill is adjusted to the preset threshold, that is, the rolling mill roll gap change 1 mill 0.7 mm, 2 / 3 / 4 mill 0.5 mm is modified in the rolling information interface. The tension of the mill is increased by a preset ratio, that is, the 1-5 mill inter-roll tension setting value is increased by 10% in the next roll information. The fine gap control speed of the mill is adjusted to the preset speed, that is, the rolling mill FGC speed is selected manually and modified to 120 mpm. The bending force of the mill is adjusted to the preset bending force, and the rolling speed of the steel is adjusted to obtain the second adjustment result. When the weld passes through the rolling mill, according to the weld position, the bending force of the 1-2 mill working roll is gradually reduced by 50 KN, the intermediate roll bending force is reduced by 40 KN, the bending force of the 3 and 4 mill working roll and intermediate roll is reduced by 30 KN respectively, and if the tension decreases too low, the 4 mill tension and the 5 mill roll speed are operated to prevent tension loss. After the weld passes through the 5 mill, the rolling speed is increased to 300 mpm, and according to the roll shifting change, the manually added bending compensation is gradually restored to 0. When the roll shifting is adjusted to the second set value, the rolling speed is increased to the maximum speed. The compensated tension, modified roll gap change and rolling speed are restored, the rolling information is recalculated, and the setting value is prevented from entering the next roll.

[0078] After the roll changing, the narrow-to-wide-to-wide specification innovation is carried out: from the first roll to the rolling mill stop, the 5 mill rolling force is modified to a constant value of 4.5 kn / mm (small rolling force can suppress the middle wave in the narrow-to-wide process). The rolling mill variable gauge speed is modified to 150 mpm. When the weld reaches the rolling mill, according to the width change 1200 mm≤W<1400 mm, the bending roll is reduced by 30 KN, 1400 mm<W≤1600 mm, the bending roll is reduced by 50 KN, 1600 mm≤W<1800 mm, the bending roll is reduced by 70 KN, 1800 mm≤W<2100 mm, the bending roll is reduced by 100 KN. When the maximum width is reached, the shearing is cancelled, the upper offline is selected, the middle wave is ensured to be less than 6 IU, and the edge wave is ensured to be less than 10 IU, to ensure that the plate shape between the mills is good before the rolling mill stops, preferably about 25 meters, and the rolling mill starts to change rolls.

[0079] In some examples, the method further comprises:

[0080] Obtaining the steel grade corresponding to the steel grade material;

[0081] The steel grades are classified to obtain classification results;

[0082] Based on the classification results, a preset steel grade transition rule is determined.

[0083] For example, steel grade designations represent specific types of steel, and each steel grade designation corresponds to a specific steel material, which is a combination of characteristics such as chemical composition, microstructure, and mechanical properties. These steel materials are classified to obtain classification results. By classifying steel materials, steels with similar properties can be grouped together, facilitating unified handling and management during production, processing, and use. The classification results are different steel categories, each with specific material characteristics. Because different categories of steel have different requirements and characteristics during production, pre-defined steel grade transition rules must be determined based on the classification results.

[0084] In some examples, the step of determining the preset steel grade transition rule based on the classification result includes:

[0085] The transitional material is determined based on the classification results of the steel grades;

[0086] If the steel grades corresponding to any two steel grades reach the transition material level, then it is determined that the steel grades corresponding to the two steel grades can be connected when rolled using the cold rolling mill.

[0087] For example, transition materials are determined based on the classification results of steel grades. This transition material is a key reference standard for determining whether different steel grades can be connected. If the steel grades corresponding to any two steel grades meet the standard of this transition material, it can be determined that the steel grades corresponding to these two steel grades can be connected for continuous production when rolled on a cold rolling mill. Specifically, the steel grades with high transition risks produced in the 15 years since the 2230 mill was put into operation are identified. Since the steel grades produced by the 2230 pickling and rolling mill cover almost all domestic cold rolling steel grades, it has greater comprehensiveness and applicability. Combining this with the identification of steel grades with high historical strip breakage risk facilitates the adjustment of the operational plan sequence. For example: BE class steel cannot be transitioned with high-strength steel; AC or BC ordinary steel must be used as an intermediate transition. Q235B and # steel cannot be transitioned with ordinary steel; low-alloy steels such as 340LA and 260LA must be used as an intermediate transition. CF and AF class hot-formed steels use DP590 as an intermediate transition. SLZW cannot be transitioned with ordinary steel; phosphorus-containing high-strength steel is required. Phosphorus-containing steels below 220Y can transition with ordinary steel and IF steel. 250P1 requires transition with low-alloy high-strength steels starting from 340LA. Ultra-high-strength steels must gradually transition from CQ715 to CQ713 to CN713 to DP590.

[0088] In some examples, the preset yield strength is 200 MPa.

[0089] Illustratively, the yield strength is an important mechanical property index of steel material, which reflects the stress value at which the steel material begins to produce obvious plastic deformation under force. According to the first adjustment result, it is found that the yield strength of the current steel material is not within the ideal range, and needs to be adjusted. The yield strength of the steel material is adjusted to be within the preset yield strength, wherein the preset yield strength is 200 MPa.

[0090] The annual benefit of reducing the empty coil and broken strip waste caused by the transition reason (the amount of waste generated in the original transition process-the amount of waste caused by the transition reason) x the monthly benefit difference of the steel variety (the difference between the good product and the waste product) x 12 = 20 t x 1653 x 12 = 39.67 million yuan. The annual benefit of saving production time caused by reducing the broken strip and deviation of the rolling mill (the amount of saved production time) x the monthly benefit per ton of steel x the average hourly output x 12 = 3 x 195 x 350 t x 12 = 245.7 million yuan. In summary, the total annual new benefit is 285.37 million yuan.

[0091] As shown in Figure 2 , the present application provides a system for avoiding deviation and broken strip in cold continuous rolling size change, which comprises a data acquisition module 21, a judgment module 22 and a rolling module 23.

[0092] The data acquisition module 21 is configured to acquire a steel grade mark; determine an adjustment plan suitable for rolling completion of a cold continuous rolling mill according to a preset steel grade transition rule based on the steel grade mark, the preset steel grade transition rule being constructed based on a steel grade material corresponding to the steel grade mark, and the adjustment plan comprising a production parameter of steel material to be adjusted.

[0093] The judgment module 22 is configured to determine whether the steel grade material of adjacent steel grades in the adjustment plan meets a preset transition requirement.

[0094] The rolling module 23 is configured to perform cold continuous rolling on the steel material based on the adjustment plan in the case that the steel grade material of adjacent steel grades meets the preset transition requirement.

[0095] The role and effect of the system in applying the foregoing method can be referred to the description in the foregoing method embodiments, which will not be repeated here.

[0096] As shown in Figure 3 , the present application also provides an electronic device 300, which comprises a memory 310, a processor 320 and a computer program 311 stored in the memory 310 and executable on the processor, and the processor 320 implements the steps of any of the foregoing methods for avoiding deviation and broken strip in cold continuous rolling size change when executing the computer program 311.

[0097] Since the electronic device introduced in the embodiment is the device used in the device for avoiding deviation and belt breakage in cold rolling size change in the embodiment of the application, based on the method introduced in the embodiment of the application, the person skilled in the art can understand the specific implementation of the electronic device in the embodiment of the application and various changes thereof, so how the electronic device implements the method in the embodiment of the application is not described in detail here, as long as the device used by the person skilled in the art to implement the method in the embodiment of the application belongs to the scope of the application.

[0098] In the specific implementation process, the computer program 311 can realize the functions of the electronic device when the computer program 311 is executed by the processor. Figure 1 Any of the embodiments in the corresponding embodiment.

[0099] It should be noted that in the above embodiments, the description of each embodiment has its own emphasis, and the parts not described in detail in a certain embodiment can be referred to the related description of other embodiments.

[0100] Those skilled in the art should understand that the embodiments of the application can be provided as a method, a system, or a computer program product. Therefore, the application can adopt a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Moreover, the application can adopt the form of a computer program product implemented on one or more computer readable storage media (including but not limited to disk memory, CD-ROM, optical memory, etc.) containing computer readable program code.

[0101] The application is described with reference to flowcharts and / or block diagrams according to the methods, devices (systems), and computer program products of the embodiments of the application. It should be understood that each flow and / or block in the flowcharts and / or block diagrams, and the combination of the flows and / or blocks in the flowcharts and / or block diagrams can be implemented by computer program instructions. These computer program instructions can be provided to the processor of a general-purpose computer, a special-purpose computer, an embedded computer, or other programmable data processing devices to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing devices produce a device for implementing the functions specified in the flowcharts and / or block diagrams. Figure 1 The functions specified in one flow or multiple flows and / or blocks. Figure 1 The devices for implementing the functions specified in one block or multiple blocks.

[0102] These computer program instructions can also be stored in a computer readable memory capable of guiding the computer or other programmable data processing devices to work in a specific way, so that the instructions stored in the computer readable memory produce a product including instruction devices, which implement the functions specified in the flowcharts and / or block diagrams. Figure 1 The functions specified in one flow or multiple flows and / or blocks. Figure 1 The devices for implementing the functions specified in one block or multiple blocks.

[0103] These computer program instructions can also be loaded into a computer or other programmable data processing devices, so that a series of operation steps are performed on the computer or other programmable devices to generate a computer implemented process, so that the instructions executed on the computer or other programmable devices provide a process for implementing the flow Figure 1 The flow or the plurality of flows and / or the function of the block Figure 1 The steps of the function specified in the flow or the plurality of flows and / or the block

[0104] The embodiment of the present application further provides a computer program product, which comprises computer software instructions, when the computer software instructions are run on a processing device, so that the processing device executes the flow of the LDPC decoding method of the solid state disk controller.

[0105] The computer program product comprises one or more computer instructions. When the computer program instructions are loaded and executed on a computer, the flow or the function according to the embodiment of the present application is generated in whole or in part. The computer can be a general-purpose computer, a special-purpose computer, a computer network or other programmable devices. The computer instructions can be stored in a computer readable storage medium or transferred from one computer readable storage medium to another computer readable storage medium, for example, the computer instructions can be transmitted from one website, computer, server or data center to another website, computer, server or data center through a wired (for example, coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (for example, infrared, wireless, microwave, etc.) manner. The computer readable storage medium can be any available medium that can be stored by the computer or the data storage device such as server, data center and the like integrated with one or more available media. The available medium can be a magnetic medium (for example, floppy disk, hard disk, magnetic tape), an optical medium (for example, DVD) or a semiconductor medium (for example, solid state disk (SSD)) and the like.

[0106] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working process of the system, device and unit described above can refer to the corresponding process in the foregoing method embodiment, which will not be described here.

[0107] In several embodiments provided in the present application, it should be understood that the disclosed devices, apparatuses and methods can be implemented in other manners. For example, the embodiments of the apparatus described above are merely schematic. For example, the division of the units is only a logical function division. There can be another division manner for the actual implementation. For example, a plurality of units or components can be combined or integrated into another system, or some features can be ignored or not executed. In addition, the displayed or discussed mutual couplings or direct couplings or communication connections between the units can be indirect couplings or communication connections through some interfaces, devices or units, and can be electrical, mechanical or in other forms.

[0108] The units described as separated components can or can not be physically separated, and the components displayed as units can or can not be physical units, i.e., can be located in one place, or can be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purposes of the embodiments.

[0109] In addition, each functional unit in the embodiments of the present application can be integrated in a processing unit, or each unit can exist physically as a separate unit, or two or more units can be integrated in one unit. The integrated unit can be implemented in the form of hardware, or in the form of software functional units.

[0110] If the integrated unit is implemented in the form of software functional units and sold or used as an independent product, it can be stored in a computer readable storage medium. Based on such an understanding, the technical solutions of the present application essentially or the part that contributes to the prior art or the whole or part of the technical solutions can be embodied in the form of a software product. The computer software product is stored in a storage medium, and includes a plurality of instructions that cause a computer device (which can be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods in the embodiments of the present application. The foregoing storage medium includes: U disk, mobile hard disk, read-only memory (ROM), random access memory (RAM), magnetic disk or optical disk, and various media that can store program codes.

[0111] The above embodiments are only used to illustrate the technical solutions of the present application, rather than limit them. Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacements for some technical features; and these modifications or replacements do not make the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

[0112] While the preferred embodiments of the application have been described, additional variations and modifications can be made to the preferred embodiments by those skilled in the art once they learn of the basic inventive concepts. Therefore, the appended claims are intended to encompass within their scope all such alternatives, modifications and variations as fall within the scope of the present application. One skilled in the art will readily recognize from the disclosure herein, collaborative combinations of elements from the various embodiments of the application. It should be noted that, while the preferred embodiments have been described in the context of a single server, the application is equally applicable to a system of servers, such as a server farm. All such modifications and variations are intended to be within the scope of the claims.

[0113] It will be apparent to those skilled in the art that various modifications and variations can be made to the present application without departing from the spirit or scope of the application. Thus, it is intended that the present application cover the modifications and variations of this application provided they come within the scope of the appended claims and their equivalents.

Claims

1. A method for avoiding strip misalignment and breakage during cold continuous rolling with varying specifications, characterized in that, The method includes: Obtain steel grade designation; Based on the steel grade, and in accordance with the preset steel grade transition rules, an adjustment plan suitable for completion of cold continuous rolling is determined. The preset steel grade transition rules are constructed based on the steel material corresponding to the steel grade. The adjustment plan includes the production parameters of the steel to be adjusted. Determine whether the steel materials of adjacent steel grades in the adjustment plan meet the preset transition requirements; When the steel grades of adjacent steel grades meet the preset transition requirements, the steel is subjected to cold continuous rolling based on the adjustment plan; the step of cold continuous rolling of the steel based on the adjustment plan includes: The value of the roll gap of the mill stand used for rolling steel is adjusted to obtain the first adjustment result; Based on the first adjustment result, the frame tension value is adjusted to obtain the second adjustment result; The change in the roller displacement is obtained based on the second adjustment result; Based on the change in the skewed roll, the additional bent roll is used to compensate for the skewed roll, and the operation result is obtained. Based on the operation results, the weld of the steel is adjusted to obtain the first adjustment result; Based on the first adjustment result, the specifications of the steel are adjusted to obtain the second adjustment result; Based on the second adjustment result, the steel is subjected to cold continuous rolling; The step of adjusting the steel specifications based on the first adjustment result to obtain the second adjustment result includes: Based on the first adjustment result, the yield strength of the steel is adjusted to within the preset yield strength, the rolling force of the stand for rolling the steel is adjusted to the preset rolling force, the roll gap variation of the stand is adjusted to the preset threshold, the tension of the stand is increased by a preset ratio, the fine gap control speed of the stand is adjusted to the preset speed, the bending roll force of the stand is adjusted to the preset bending roll force, and the rolling speed of the steel is adjusted to obtain the second adjustment result.

2. The method for avoiding deviation and strip breakage in cold continuous rolling with varying specifications according to claim 1, characterized in that, The steps for obtaining the steel grade include: Obtain the initial steel grade; The steel corresponding to the stated steel grade was tested and analyzed to obtain the analysis results; Based on the analysis results, the initial steel grade is further subdivided to obtain the steel grade designations.

3. The method for avoiding deviation and strip breakage in cold continuous rolling with varying specifications according to claim 1, characterized in that, The method further includes: Obtain the steel material corresponding to the steel grade; The steel grades are classified to obtain classification results; Based on the classification results, a preset steel grade transition rule is determined.

4. The method for avoiding deviation and strip breakage in cold continuous rolling with varying specifications according to claim 3, characterized in that, The step of determining the preset steel grade transition rule based on the classification result includes: The transitional material is determined based on the classification results of the steel grades; If the steel grades corresponding to any two steel grades reach the transition material level, then it is determined that the steel grades corresponding to the two steel grades can be connected when rolled using the cold rolling mill.

5. The method for avoiding deviation and strip breakage in cold continuous rolling with varying specifications according to claim 1, characterized in that, The preset yield strength is 200 MPa.

6. A system for preventing strip misalignment and breakage during cold continuous rolling mill specification changes, characterized in that, The system includes: a data acquisition module, a judgment module, and a rolling module; The data acquisition module is configured to: acquire steel grade; based on the steel grade, determine an adjustment plan suitable for completion of cold continuous rolling mill according to a preset steel grade transition rule, wherein the preset steel grade transition rule is constructed based on the steel material corresponding to the steel grade, and the adjustment plan includes the production parameters of the steel to be adjusted; The judgment module is configured to: determine whether the steel material of adjacent steel grades in the adjustment plan meets the preset transition requirements; The rolling module is configured to: perform cold continuous rolling of steel based on the adjustment plan when the steel grades of adjacent steel grades meet the preset transition requirements; the step of performing cold continuous rolling of steel based on the adjustment plan includes: adjusting the value of the roll gap of the mill stand for rolling the steel to obtain a first adjustment result; adjusting the tension value of the mill stand based on the first adjustment result to obtain a second adjustment result; obtaining the roll shift change based on the second adjustment result; operating the additional bending roll to compensate for the roll shift based on the roll shift change to obtain an operation result; adjusting the weld of the steel based on the operation result to obtain a first adjustment result; and adjusting the weld of the steel based on the first adjustment result. The steel specifications are adjusted to obtain a second adjustment result; the steel is then subjected to cold continuous rolling based on the second adjustment result; the step of adjusting the steel specifications based on the first adjustment result to obtain the second adjustment result includes: adjusting the yield strength of the steel to within a preset yield strength based on the first adjustment result, adjusting the rolling force of the mill stand for rolling the steel to a preset rolling force, adjusting the roll gap variation of the mill stand to a preset threshold, increasing the tension of the mill stand by a preset ratio, adjusting the fine gap control speed of the mill stand to a preset speed, adjusting the bending roll force of the mill stand to a preset bending roll force, and adjusting the rolling speed of the steel to obtain the second adjustment result.

7. An electronic device, comprising: The memory and processor are characterized in that the processor is used to execute a computer program stored in the memory to implement the steps of a method for avoiding deviation and strip breakage in cold continuous rolling with different specifications as described in any one of claims 1-5.

8. A computer-readable storage medium having a computer program stored thereon, characterized in that, When the computer program is executed by the processor, it implements the steps of a method for avoiding deviation and strip breakage in cold continuous rolling with different specifications as described in any one of claims 1-5.

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