A method and apparatus for skin passing strip steel

Abstract

The application discloses a kind of strip steel's flattening method and device, the flattening method is by obtaining the strip steel flattening sequence comprising multiple flattening periods, determine whether the first strip steel roughness of current period is greater than the second strip steel roughness of next period, when the first strip steel roughness is greater than the second strip steel roughness, control current flattening strip steel of current period to polish the flattening work roll, so that the flattening work roll reaches the target roughness of next period, when the strip steel flattening of next period is implemented, based on the flattening work roll reaching target roughness, the strip steel to be flattened of next period is flattened and handled, since the flattening work roll is polished to the roughness required by control strip steel during flattening process, so that there is no need to change roll when flattening is implemented in next period, the roll changing frequency of flattening work roll on the flattening machine is reduced, and then the flattening efficiency of strip steel is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of flattening strip steel, and in particular to a flattening method and device for strip steel. BACKGROUND

[0002] A flattening machine is used to control the shape of a plate in a cold-rolled plate continuous annealing production line. Through continuous rolling control and roll changing operations of the flattening machine, the stability of the shape, performance and surface quality of the steel coil is ultimately ensured, thereby avoiding defects or accidents such as buckling and broken strip caused by a significant reduction in the speed of the furnace area due to the increasing demand of different customers for orders and the increasing requirement for the roughness of high-grade strip steel. The flattening machine needs to frequently manually change the working roll, which causes great difficulty in processing and poses a great safety hazard.

[0003] Therefore, how to improve the flattening efficiency of the strip steel is a technical problem to be solved at present. SUMMARY

[0004] The flattening method and device for strip steel provided by the present application can reduce the roll changing frequency of the flattening working roll on the flattening machine and improve the flattening efficiency of the strip steel.

[0005] The embodiments of the present application provide the following solutions.

[0006] In a first aspect, the embodiments of the present application provide a flattening method for strip steel, and the method comprises the following steps.

[0007] Obtaining a strip steel flattening sequence comprising a plurality of flattening periods, wherein the surface roughness of the strip steel flattened in each flattening period is the same.

[0008] According to the strip steel flattening sequence, determining whether the first roughness of the strip steel in a current period is greater than the second roughness of the strip steel in a next period.

[0009] When the first roughness of the strip steel is greater than the second roughness of the strip steel, polishing the flattening working roll by the current flattened strip steel in the current period, so that the flattening working roll reaches a target roughness of the next period.

[0010] Based on the flattening working roll reaching the target roughness, performing flattening processing on the strip steel to be flattened in the next period.

[0011] In an optional embodiment, the step of obtaining the strip steel flattening sequence comprising a plurality of flattening periods comprises the following steps.

[0012] Obtaining the roughness of the strip steel in each flattening period of the plurality of flattening periods, wherein each flattening period comprises at least one steel coil to be flattened.

[0013] The roughnesses of the plurality of strip steels are arranged in descending order of roughness to obtain the strip steel leveling order of the plurality of coils of strip steels to be leveled.

[0014] In an optional embodiment, the control of the grinding of the leveling work roll by the current leveling strip steel in the current period comprises:

[0015] obtaining the current leveling length and the initial elongation rate of the current leveling strip steel in the current period, and the target roughness;

[0016] determining whether the current leveling length is greater than a first strip steel length, wherein the first strip steel length is a minimum strip steel length required for leveling strip steel to make the leveling work roll reach the target roughness based on the initial elongation rate;

[0017] if yes, leveling the current leveling strip steel at the initial elongation rate;

[0018] if no, adjusting the initial elongation rate to increase by a preset elongation rate, and leveling the current leveling strip steel at the preset elongation rate.

[0019] In an optional embodiment, before the leveling of the current leveling strip steel at the preset elongation rate, the method further comprises:

[0020] if the current leveling length is not greater than the first strip steel length and is less than a preset second strip steel length, controlling the front anti-curling roll height of the leveling machine to increase to a first height, and the rear anti-curling roll height to increase to a second height.

[0021] In an optional embodiment, before the leveling of the current leveling strip steel at the preset elongation rate, the method further comprises:

[0022] if the current leveling length is not greater than the first strip steel length and is less than a preset third strip steel length, controlling the strip steel inlet tension of the leveling machine to decrease to a first tension, and the strip steel outlet tension to decrease to a second tension.

[0023] In an optional embodiment, before the leveling of the current leveling strip steel at the preset elongation rate, the method further comprises:

[0024] if the current leveling length is not greater than the first strip steel length and is less than a preset fourth strip steel length, controlling the leveling liquid concentration of the leveling machine to decrease to a preset concentration.

[0025] In an optional embodiment, before the leveling of the current leveling strip steel at the preset elongation rate, the method further comprises:

[0026] If the current leveling length is not greater than the first strip length and is less than a preset fifth strip length, the running acceleration of the leveling machine is controlled to increase to a preset acceleration.

[0027] In a second aspect, the embodiments of the present application further provide a strip leveling device, which comprises:

[0028] An acquisition module is configured to acquire a strip leveling sequence comprising a plurality of leveling periods, wherein the strip surface roughness leveled in each leveling period is the same;

[0029] A determination module is configured to determine whether a first strip roughness of a current period is greater than a second strip roughness of a next period according to the strip leveling sequence;

[0030] A control polishing module is configured to control a current leveling strip of the current period to polish a leveling work roll so as to make the leveling work roll reach a target roughness of the next period when the first strip roughness is greater than the second strip roughness.

[0031] A leveling module is configured to perform leveling processing on a strip to be leveled of the next period based on the leveling work roll reaching the target roughness.

[0032] In a third aspect, the embodiments of the present application further provide an electronic device, which comprises a processor and a memory coupled to the processor, and the memory stores instructions which, when executed by the processor, cause the electronic device to perform the steps of the method of any one of the first aspect.

[0033] In a fourth aspect, the embodiments of the present application further provide a computer readable storage medium having a computer program stored thereon, and the program, when executed by a processor, implements the steps of the method of any one of the first aspect.

[0034] Compared with the prior art, the strip leveling method and device of the present application have the following advantages:

[0035] The leveling method of the present application acquires a strip leveling sequence comprising a plurality of leveling periods, determines whether a first strip roughness of a current period is greater than a second strip roughness of a next period, controls a current leveling strip of the current period to polish a leveling work roll so as to make the leveling work roll reach a target roughness of the next period when the first strip roughness is greater than the second strip roughness, and performs leveling processing on a strip to be leveled of the next period based on the leveling work roll reaching the target roughness when the strip of the next period is leveled. Since the leveling work roll is polished to the required roughness during the leveling process, the leveling work roll does not need to be replaced when the next period is leveled, the replacement frequency of the leveling work roll on the leveling machine is reduced, and the leveling efficiency of the strip is improved. BRIEF DESCRIPTION OF DRAWINGS

[0036] In order to more clearly illustrate the technical solutions in the embodiments of the present specification or the prior art, the drawings needed to be used in the embodiments will be briefly introduced as follows. Obviously, the drawings in the following description only constitute some embodiments of the present specification, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings.

[0037] Figure 1 A flow chart of a strip flattening method provided by an embodiment of the present application;

[0038] Figure 2 A structural schematic diagram of a flattening machine provided by an embodiment of the present application;

[0039] Figure 3 A structural schematic diagram of a strip flattening device provided by an embodiment of the present application.

[0040] Legend: 1 - strip, 2 - flattening work roll, 3 - front anti-wrinkle roll, 4 - rear anti-wrinkle roll, 5 - tension roll. DETAILED DESCRIPTION

[0041] The technical solutions in the embodiments of the present application will be described clearly and completely in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments only constitute some of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art belong to the scope of protection of the embodiments of the present application.

[0042] Please refer to Figure 1 , Figure 1 A flow chart of a strip flattening method provided by an embodiment of the present application, the method comprising:

[0043] S11, obtaining a strip flattening sequence containing multiple flattening periods, wherein the strip surface roughness flattened in each flattening period is the same.

[0044] Specifically, one flattening period is a period in which the flattening machine processes the same surface roughness strip, and at least one coil of strip to be flattened is processed in one flattening period. The length of each coil of strip is about 2500m. The strip flattening sequence represents the flattening arrangement sequence of strips with different roughness requirements when the strips are flattened. In a continuous production line, the strip flattening sequence can be obtained based on the production plan of the strip. Of course, when the flattening process is implemented separately, the strip flattening sequence can also be obtained based on the arrangement sequence of the strips to be flattened.

[0045] Since the friction between the leveling work roll and the strip steel has a certain polishing effect on the leveling work roll during the leveling process of the strip steel, with the accumulation of the leveling length of the strip steel, the surface roughness of the leveling work roll will gradually decrease. Based on the roughness change rule of the leveling work roll, if the leveling periods in the strip steel leveling sequence are arranged in disorder, after completing a leveling period, frequent roll replacement may be required due to the increase of the roughness of the strip steel to be leveled. Based on this, in a specific embodiment, a strip steel leveling sequence including multiple leveling periods is obtained, including:

[0046] Firstly, the roughness of the strip steel in each leveling period in the multiple leveling periods is obtained, wherein each leveling period includes at least one coil of strip steel to be leveled; the roughness of the strip steel is the surface roughness of the strip steel after being leveled by the leveling work roll. The roughness of the strip steel is transferred to the surface of the strip steel during the leveling process, so there is a corresponding relationship between the roughness of the strip steel and the surface roughness of the leveling work roll. The roughness of the strip steel can be determined based on the order information of the strip steel, and the roughness of the strip steel required by different application requirements is different.

[0047] Secondly, the roughness of the strip steel is arranged in descending order to obtain the strip steel leveling sequence of multiple coils of strip steel to be leveled. Arranging the roughness of the strip steel in descending order facilitates subsequent polishing of the leveling work roll during the leveling process to reduce the roll replacement frequency of the leveling work roll. After obtaining the strip steel leveling sequence including multiple leveling periods, step S12 is entered.

[0048] S12, according to the strip steel leveling sequence, determine whether the first roughness of the strip steel in the current period is greater than the second roughness of the strip steel in the next period.

[0049] Specifically, the strip steel leveling sequence can be a roughness array established in the order of strip steel leveling. Each element in the array represents the roughness of the strip steel leveling in the order. The first roughness of the strip steel represents the roughness requirement of the strip steel in the current period, and the second roughness of the strip steel represents the roughness requirement of the strip steel in the next period. Therefore, the first roughness of the strip steel and the second roughness of the strip steel can be extracted based on the strip steel leveling sequence and compared. It can be understood that when the comparison is performed, corresponding program variables can be established, the first roughness of the strip steel and the second roughness of the strip steel are assigned to the corresponding variables, and then the comparison result is output. The comparison result can be represented in binary form, for example, when the output result is 1, it means that the first roughness of the strip steel is greater than the second roughness of the strip steel; when the output result is 0, it means that the first roughness of the strip steel is not greater than the second roughness of the strip steel. Of course, the comparison can also be performed manually, and the corresponding instructions are input. Based on the received input instructions, it is determined whether the first roughness of the strip steel is greater than the second roughness of the strip steel, and after the comparison is completed, step S13 is entered.

[0050] S13, when the first strip roughness is greater than the second strip roughness, polishing the work roll by the current strip in the current pass to make the work roll reach the target roughness of the next pass.

[0051] Specifically, the first strip roughness being greater than the second strip roughness indicates that the no-roll-change implementation basis exists in the flattening process from the current pass to the next pass, and then the work roll is polished by the current strip in the current pass; otherwise, if the first strip roughness is not greater than the second strip roughness, it indicates that the no-roll-change operation cannot be implemented, and then the work roll with greater roughness is replaced to flatten the strip in the next pass after the strip flattening in the current pass is completed.

[0052] It can be understood that, in order to make the work roll reach the target roughness of the next pass, the friction between the strip and the work roll can be increased, or the contact area between the strip and the work roll can be increased, and the work roll can be polished to the target roughness, which is not limited specifically herein.

[0053] In a specific embodiment, the work roll is polished by the current strip in the current pass, comprising:

[0054] In a specific embodiment, the work roll is polished by the current strip in the current pass, comprising:

[0055] In a specific embodiment, the work roll is polished by the current strip in the current pass, comprising:

[0056] In the third step, when the current flat length is greater than the first strip length, it indicates that the flat work roll can be naturally worn to the target roughness by flattening the strip at the initial elongation rate in the current cycle, and the current flat strip is flattened at the initial elongation rate. Otherwise, when the current flat length is not greater than the first strip length, it indicates that the flat work roll cannot be naturally worn to the target roughness by flattening the strip at the initial elongation rate in the current cycle, and the initial elongation rate is adjusted to increase the preset elongation rate, and the current flat strip is flattened at the preset elongation rate. It can be understood that the preset elongation rate can be preset, for example, the initial elongation rate is increased by 0.1 to be the preset elongation rate.

[0057] Referring to Figure 2 When the strip is flattened based on the flattening machine, the front and rear anti-curling rollers are respectively arranged on both sides of the flat work roll, and the front and rear anti-curling rollers are used to adjust the contact area of the strip and the flat work roll. The higher the horizontal height of the front and rear anti-curling rollers, the larger the contact area of the strip and the flat work roll; otherwise, the contact area is smaller. The side of the front anti-curling roller away from the flat work roll is provided with a tension roller, and the side of the rear anti-curling roller away from the flat work roll is also provided with a tension roller. The flattening tension of the strip can be adjusted through the tension roller.

[0058] In actual application, since increasing the elongation rate of the strip flattening has a limited polishing effect on the flat work roll, if the strip length of the current cycle is short, the flat work roll may not reach the target roughness when the strip flattening of the current cycle is completed, causing the need for roll replacement. Based on this, in a specific embodiment, before the current flat strip is flattened at the preset elongation rate, the method further comprises:

[0059] If the current flat length is not greater than the first strip length and is less than the preset second strip length, it indicates that the flat strip length of the current flattening cycle is short, and the height of the front anti-curling roller of the flattening machine is increased to the first height, and the height of the rear anti-curling roller is increased to the second height. After the horizontal height of the front and rear anti-curling rollers is increased, the contact area of the strip and the flat work roll is increased, and the length of the strip required for the flat work roll to be polished to the target roughness is smaller. By increasing the horizontal height of the front and rear anti-curling rollers, it can be ensured that the flat work roll is polished to the target roughness when the current flat length is less than the second strip length. It should be noted that the amount of increase in the height of the front and rear anti-curling rollers can be determined through calibration experiments, for example, the initial height is increased by 20%; of course, it can also be determined based on the experience of technical personnel, as long as the flat work roll can be polished to the target roughness, which is not limited specifically herein. Increasing the horizontal height can increase the contact area of the strip and the roll surface without affecting the plate shape, thereby passively increasing the rolling force to achieve the effect of grinding the roll.

[0060] In a specific embodiment, before the current flat strip steel is processed by the preset elongation ratio, the method further comprises:

[0061] If the current flat length is not greater than the first strip length and less than the preset third strip length, it also indicates that the flat strip length of the current flat cycle is short, and polishing the flat work roll with the current flat length can not make it reach the target roughness. Therefore, the strip steel inlet tension of the flattener is controlled to decrease to the first tension, and the strip steel outlet tension is controlled to decrease to the second tension. The tension reduction amount can be reduced by 15% on the initial basis, so that the surface tension of the strip steel is reduced, the rolling force is adjusted according to the shape without affecting the flat shape of the strip steel, the rolling force needs to be increased, and a more efficient roll grinding effect is achieved.

[0062] In a specific embodiment, before the current flat strip steel is processed by the preset elongation ratio, the method further comprises:

[0063] If the current flat length is not greater than the first strip length and less than the preset fourth strip length, it also indicates that the flat strip length of the current flat cycle is short, and polishing the flat work roll with the current flat length can not make it reach the target roughness. Therefore, the flat liquid concentration of the flattener is controlled to decrease to the preset concentration. The flat liquid concentration can be reduced from the initial value of 3% to 1%. This means that the concentration of the lubricating liquid on the surface of the strip steel is low, the strip steel is relatively smoother than before, and the rolling force is automatically increased to compensate for the contact force with the strip steel in order to meet the shape requirements, thereby achieving a more efficient roll grinding effect.

[0064] In a specific embodiment, before the current flat strip steel is processed by the preset elongation ratio, the method further comprises:

[0065] If the current flat length is not greater than the first strip length and less than the preset fifth strip length, the running acceleration of the flattener is controlled to increase to the preset acceleration. The acceleration increase amount can be increased from the initial value of 0.3 m / s to 0.35 m / s. The upper limit of the speed of the flattener is increased from 360 mpm to 460 mpm to adjust and change the torque and speed difference to increase the friction force between the flat work roll and the surface of the strip steel, so that the rolling force of the flattener changes more, and a more efficient roll grinding effect is achieved.

[0066] It should be noted that the second strip steel length to the fifth strip steel length can be sequentially decreased, and increasing the elongation rate of strip steel leveling, increasing the anti-wrinkle roller height, reducing the strip steel tension, reducing the leveling liquid concentration, and increasing the running acceleration of the leveling machine can be implemented alone or in combination, and here is not specifically limited. The priority can also be set from high to low according to the elongation rate, the anti-wrinkle roller height, the strip steel tension, the leveling liquid concentration, and the running acceleration, and the combination is used. When the next leveling cycle is reached, the leveling work roll reaches the target roughness, and then step S14 is entered.

[0067] S14, based on the leveling work roll reaching the target roughness, the next cycle of the strip steel to be leveled is leveled.

[0068] Specifically, due to the grinding of the strip steel, the leveling timing reaches the target roughness of the leveling work roll when the next cycle is reached, so that the roll changing operation is not needed, and the strip steel leveling of the next cycle can be directly implemented based on the leveling work roll.

[0069] Taking the first strip steel roughness of the current cycle as 2.6 μm and the second strip steel roughness as 1.6 μm as an example, since the production line is normally produced, the large roughness leveling work roll corresponding to 2.6 μm is used. Through the grinding of the leveling work roll, the surface roughness of the leveling work roll can be reduced more quickly during the production of the leveling machine to meet the customer's demand for high-grade products. Before the leveling method of the embodiment of the present application is implemented, the leveling work roll corresponding to 2.6 μm needs to be changed in advance when producing high-grade strip steel. After that, the 1.2-0.8 mm thick steel coil is produced to transition to high-grade steel coil, and the length of each steel coil is 2500 m. The steel coil in the transition has good plate shape control, and the comprehensive adjustment of various parameters will not affect the plate shape of the strip steel. Before this method is not taken, the 2.6 μm leveling work roll needs to consume about 80-90 Km mileage, which is equivalent to 30 coils of strip steel for transition, so that high-grade low-roughness strip steel can be produced. After the method of increasing the elongation rate of strip steel leveling, increasing the anti-wrinkle roller height, reducing the strip steel tension, reducing the leveling liquid concentration, and increasing the running acceleration of the leveling machine, the work roll consumes about 25 Km mileage, and 10 coils of steel are used for transition to meet the leveling requirements of high-grade roughness strip steel.

[0070] Therefore, the leveling method greatly reduces the frequency of replacing the 1.6 μm work roll to meet the customer's demand for high-grade products, reduces the occurrence of quality defects in the leveling process, and increases the production and use mileage of the work roll, reduces the roll consumption cost of the work roll, and thus reduces the processing cost of production; in addition, the method also has the advantages of simple operation, convenient and fast use.

[0071] Based on the same inventive concept as the flattening method, the embodiments of the present application also provide a strip flattening device, please refer to Figure 3 , which comprises:

[0072] The acquisition module 301 is configured to acquire a strip flattening sequence comprising a plurality of flattening periods, wherein the strip surface roughness flattened in each flattening period is the same;

[0073] The determination module 302 is configured to determine whether a first strip roughness of a current period is greater than a second strip roughness of a next period according to the strip flattening sequence;

[0074] The control polishing module 303 is configured to control a current flattening strip of the current period to polish a flattening work roll so that the flattening work roll reaches a target roughness of the next period when the first strip roughness is greater than the second strip roughness;

[0075] The flattening module 304 is configured to flatten a strip to be flattened of the next period based on the flattening work roll reaching the target roughness.

[0076] In an optional embodiment, the acquisition module comprises:

[0077] The first acquisition submodule is configured to acquire a strip roughness of each flattening period in the plurality of flattening periods, wherein each flattening period comprises at least one steel coil to be flattened;

[0078] The obtaining submodule is configured to arrange the plurality of strip roughnesses in descending order of roughness to obtain the strip flattening sequence of the plurality of steel coils to be flattened.

[0079] In an optional embodiment, the control polishing module comprises:

[0080] The second acquisition submodule is configured to acquire a current flattening length and an initial elongation rate of the current flattening strip in the current period, and the target roughness;

[0081] The judgment submodule is configured to judge whether the current flattening length is greater than a first strip length, wherein the first strip length is a minimum strip length required for flattening a strip based on the initial elongation rate to make the flattening work roll reach the target roughness;

[0082] The flattening processing submodule is configured to flatten the current flattening strip at the initial elongation rate when the current flattening length is greater than the first strip length;

[0083] The adjusting processing submodule is configured to, when the current flat length is not greater than the first strip length, adjust the initial elongation rate to increase by a preset elongation rate, and perform flat treatment on the current flat strip at the preset elongation rate.

[0084] In an alternative embodiment, the control polishing module further comprises:

[0085] The first control submodule is configured to, when the current flat length is not greater than the first strip length and is less than a preset second strip length, control the front anti-wrinkle roller of the flattening machine to increase to a first height and the rear anti-wrinkle roller to increase to a second height.

[0086] In an alternative embodiment, the control polishing module further comprises:

[0087] The second control submodule is configured to, when the current flat length is not greater than the first strip length and is less than a preset third strip length, control the strip inlet tension of the flattening machine to decrease to a first tension and the strip outlet tension to decrease to a second tension.

[0088] In an alternative embodiment, the control polishing module further comprises:

[0089] The third control submodule is configured to, when the current flat length is not greater than the first strip length and is less than a preset fourth strip length, control the concentration of the flattening liquid of the flattening machine to decrease to a preset concentration.

[0090] In an alternative embodiment, the control polishing module further comprises:

[0091] The fourth control submodule is configured to, when the current flat length is not greater than the first strip length and is less than a preset fifth strip length, control the running acceleration of the flattening machine to increase to a preset acceleration.

[0092] Based on the same inventive concept as the flat method, the embodiments of the present application also provide an electronic device comprising a processor and a memory, the memory being coupled to the processor, the memory storing instructions which, when executed by the processor, cause the electronic device to perform the steps of any one of the flat methods.

[0093] Based on the same inventive concept as the flat method, the embodiments of the present application also provide a computer-readable storage medium having a computer program stored thereon, the program being executed by a processor to implement the steps of any one of the flat methods.

[0094] The technical solutions provided in the embodiments of the present application have at least the following technical effects or advantages:

[0095] The flattening method comprises the following steps: acquiring a strip steel flattening sequence comprising multiple flattening periods, determining whether a first strip steel roughness of a current period is greater than a second strip steel roughness of a next period, and when the first strip steel roughness is greater than the second strip steel roughness, polishing a current flattening work roll by a current strip steel of the current period, so that the flattening work roll reaches a target roughness of the next period, and based on the flattening work roll reaching the target roughness, flattening a strip steel to be flattened of the next period when the strip steel of the next period is flattened. Since the flattening work roll is polished to the required roughness during the flattening process, the flattening work roll does not need to be replaced when flattening is performed in the next period, the replacement frequency of the flattening work roll on the flattening machine is reduced, and the flattening efficiency of the strip steel is improved.

[0096] Those skilled in the art will appreciate that embodiments of the application can be supplied as methods, systems, or computer program products. Accordingly, the application can be embodied in the form of complete hardware embodiments, complete software embodiments, or embodiments combining software and hardware aspects. Furthermore, the application can be embodied in the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROMs, optical storage media, etc.) having computer usable program code embodied thereon.

[0097] The present application is described with reference to the flowcharts and / or block diagrams of the methods, apparatus (modules, systems), and computer program products according to embodiments of the present application. It should be understood that each flow and / or block in the flowcharts and / or block diagrams, as well as combinations of 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 a processor of a general-purpose computer, a special-purpose computer, an embedded computer, or other programmable data processing apparatus to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing apparatus produce an apparatus that implements the flow Figure 1 The flow or multiple flows and / or blocks Figure 1 The apparatus that implements the functions specified in the flow or multiple flows and / or blocks.

[0098] These computer program instructions can also be stored in a computer-readable memory that can direct the computer or other programmable data processing apparatus to work in a specific manner, so that the instructions stored in the computer-readable memory produce a manufactured product including instruction apparatus, which implements the flow Figure 1 The flow or multiple flows and / or blocks Figure 1 The apparatus that implements the functions specified in the flow or multiple flows and / or blocks.

[0099] These computer program instructions can also be loaded into a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart block or blocks. Figure 1 one or more flowcharts and / or blocks Figure 1 one or more flowcharts and / or blocks

[0100] Although preferred embodiments of the application have been described herein, it will be apparent to those skilled in the art that various modifications can be made within the scope of the application and it is intended that the application should cover any and all such modifications.

[0101] Obviously, numerous modifications and variations of the present application are possible in light of the above teachings. It is therefore to be understood that within the scope of the appended claims and their equivalents, the application can be practiced otherwise than as specifically described.

Claims

1. A method for leveling a steel strip, characterized in that: The method comprises: Obtaining a strip flattening sequence comprising a plurality of flattening cycles, wherein the surface roughness of the strip flattened in each flattening cycle is the same; Determining, according to the strip flattening sequence, whether the roughness of the first strip of steel in the current cycle is greater than the roughness of the second strip of steel in the next cycle; When the roughness of the first steel strip is greater than the roughness of the second steel strip, controlling the current flat steel strip of the current cycle to grind the flat work roll so that the flat work roll reaches the target roughness of the next cycle; The steel strip to be leveled in the next cycle is leveled based on the leveling work roll that has reached the target roughness.

2. The method for flattening a steel strip according to claim 1, characterized in that: The step of obtaining a strip flattening sequence including a plurality of flattening cycles comprises: Obtaining the strip roughness of each flattening cycle in the plurality of flattening cycles, wherein each flattening cycle includes at least one steel coil to be flattened; The roughness of a plurality of steel strips is arranged in descending order of roughness to obtain the steel strip flattening order of a plurality of rolls of steel strips to be flattened.

3. The method for flattening a steel strip according to claim 1, characterized in that: The step of controlling the current flat strip steel of the current cycle to grind the flat working roll comprises: Obtaining the current flat length and initial elongation of the current flat strip in the current cycle, as well as the target roughness; Determining whether the current flattening length is greater than a first strip length, wherein the first strip length is a minimum strip length required for flattening the strip so that the flattening work roll reaches the target roughness based on the initial elongation; If yes, flattening the current flat strip steel at the initial elongation; If not, the initial elongation is adjusted to increase the preset elongation, and the current flat strip is flattened at the preset elongation.

4. The method for flattening a steel strip according to claim 3, characterized in that: Before flattening the current flat steel strip at the preset elongation, the method further includes: If the current leveling length is not greater than the first strip length and is less than the preset second strip length, the front anti-wrinkle roller height of the leveling machine is controlled to increase to the first height, and the rear anti-wrinkle roller height is controlled to increase to the second height.

5. The method for flattening a steel strip according to claim 3, characterized in that: Before flattening the current flat steel strip at the preset elongation, the method further includes: If the current leveling length is not greater than the first strip length and is less than the preset third strip length, the strip entrance tension of the leveling machine is controlled to be reduced to the first tension, and the strip exit tension is reduced to the second tension.

6. The method for flattening a steel strip according to claim 3, characterized in that: Before flattening the current flat steel strip at the preset elongation, the method further includes: If the current leveling length is not greater than the first steel strip length and is less than the preset fourth steel strip length, the leveling fluid concentration of the leveling machine is controlled to be reduced to a preset concentration.

7. The method for flattening a steel strip according to claim 3, characterized in that: Before flattening the current flat steel strip at the preset elongation, the method further includes: If the current leveling length is not greater than the first strip length and is less than the preset fifth strip length, the running acceleration of the leveling machine is controlled to increase to the preset acceleration.

8. A strip steel leveling device, characterized in that: The device comprises: An acquisition module is used to acquire a strip flattening sequence including a plurality of flattening cycles, wherein the surface roughness of the strip flattened in each flattening cycle is the same; a determination module, configured to determine whether the roughness of the first steel strip in the current cycle is greater than the roughness of the second steel strip in the next cycle according to the steel strip flattening sequence; a control grinding module, configured to control the current flat strip of the current cycle to grind the flat work roll when the roughness of the first steel strip is greater than the roughness of the second steel strip, so that the flat work roll reaches the target roughness of the next cycle; A leveling module is used to level the steel strip to be leveled in the next cycle based on the leveling working roll that has reached the target roughness.

9. An electronic device, characterized in that: The electronic device comprises a processor and a memory, wherein the memory is coupled to the processor and stores instructions, and when the instructions are executed by the processor, the electronic device executes the steps of the method according to any one of claims 1 to 7.

10. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the program is executed by a processor, the steps of the method according to any one of claims 1 to 7 are implemented.

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