CN116550768A - Roll gap value determining method and device, electronic equipment and storage medium - Google Patents

Roll gap value determining method and device, electronic equipment and storage medium Download PDF

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Publication number
CN116550768A
CN116550768A CN202310593917.6A CN202310593917A CN116550768A CN 116550768 A CN116550768 A CN 116550768A CN 202310593917 A CN202310593917 A CN 202310593917A CN 116550768 A CN116550768 A CN 116550768A
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China
Prior art keywords
rolling
pass
target
thickness
determining
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CN202310593917.6A
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Chinese (zh)
Inventor
游兴华
范合合
杨崟
锡胜
郭小龙
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Chongqing Iron and Steel Co Ltd
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Chongqing Iron and Steel Co Ltd
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Priority to CN202310593917.6A priority Critical patent/CN116550768A/en
Publication of CN116550768A publication Critical patent/CN116550768A/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
    • B21B37/58—Roll-force control; Roll-gap control
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B38/00—Methods or devices for measuring, detecting or monitoring specially adapted for metal-rolling mills, e.g. position detection, inspection of the product
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B38/00—Methods or devices for measuring, detecting or monitoring specially adapted for metal-rolling mills, e.g. position detection, inspection of the product
    • B21B38/04—Methods or devices for measuring, detecting or monitoring specially adapted for metal-rolling mills, e.g. position detection, inspection of the product for measuring thickness, width, diameter or other transverse dimensions of the product
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B38/00—Methods or devices for measuring, detecting or monitoring specially adapted for metal-rolling mills, e.g. position detection, inspection of the product
    • B21B2038/004—Measuring scale thickness
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Control Of Metal Rolling (AREA)

Abstract

The method comprises the steps of obtaining preset rolling data, determining the thickness of a current plate blank after target pass rolling is finished, determining a thickness difference value according to the thickness of the current plate blank and the preset outlet thickness of the target pass, determining the target rolling amount of each non-rolling pass according to the thickness difference value, the number of non-rolling passes and the preset rolling amount corresponding to each non-rolling pass when the absolute value of the thickness difference value is larger than or equal to the preset difference value, and finally determining the target rolling amount of each non-rolling pass according to the target rolling amount of each non-rolling pass. The accuracy of the roll gap value obtained according to the roll gap value determining method can be improved.

Description

Roll gap value determining method and device, electronic equipment and storage medium
Technical Field
The application relates to the technical field of steel rolling, in particular to a method and a device for determining a roll gap value, electronic equipment and a storage medium.
Background
In the process of rolling the steel plate, the roll gap value of the rolling mill needs to be determined so that the thickness of the steel plate rolled by the rolling mill meets the thickness requirement.
A roll gap value determining method in the related art is characterized in that the number of all passes in the rolling process and the preset reduction of each pass are preset, the roll gap value is determined according to the preset reduction of each pass, and the thickness of a steel plate is obtained after the rolling of the final pass is finished, so that whether the thickness of the rolled steel plate meets the thickness requirement is determined. However, when the thickness of the steel sheet is determined after the completion of rolling, the rolling thickness or thinning of the steel sheet may occur, and thus the accuracy of the roll gap value obtained by using the roll gap value determining method is low.
Disclosure of Invention
In view of the above-mentioned drawbacks of the related art, the present application provides a method, an apparatus, an electronic device, and a storage medium for determining a roll gap value, so as to solve the above-mentioned technical problems.
The method for determining the roll gap value comprises the following steps:
acquiring preset rolling data, wherein the preset rolling data comprises preset passes, and preset inlet thickness, preset outlet thickness and preset reduction corresponding to each pass;
after the target pass rolling is finished, determining the thickness of the current plate blank, wherein the target pass is not the final pass;
determining a thickness difference value according to the current slab thickness and the preset outlet thickness of the target pass;
when the absolute value of the thickness difference is larger than or equal to a preset difference, determining the target rolling reduction of each rolling pass according to the thickness difference, the number of rolling passes and the preset rolling reduction corresponding to each rolling pass;
and determining a target roll gap value of each non-rolling pass according to the target reduction of each non-rolling pass.
In an embodiment of the present application, determining the target reduction of each rolling pass according to the thickness difference, the number of rolling passes and the preset reduction corresponding to each rolling pass includes:
determining the ratio of the thickness difference value to the number of non-rolling passes as a distribution amount;
and determining the target rolling reduction of each non-rolling pass according to the distribution quantity and the preset rolling reduction corresponding to each non-rolling pass.
In an embodiment of the present application, the target pass is a third last pass of the preset passes.
In an embodiment of the present application, the determining the target roll gap value of each rolling pass according to the target reduction of each rolling pass includes:
determining a target outlet thickness of a first non-rolling pass according to the current slab thickness and a target reduction of the first non-rolling pass, wherein the first non-rolling pass is a penultimate pass;
determining the target outlet thickness of a second non-rolling pass according to the target outlet thickness of the first non-rolling pass and the target reduction of the second non-rolling pass, wherein the second non-rolling pass is a final pass;
and determining a target roll gap value of each non-rolling pass according to the target outlet thickness corresponding to each non-rolling pass.
In an embodiment of the present application, the determining the target roll gap value of each rolling pass according to the target outlet thickness corresponding to each rolling pass includes:
determining a target roll gap value for each non-rolling pass according to a roll gap determination formula and a target outlet thickness for each non-rolling pass, wherein the roll gap determination formula comprises:
S SET ＝S m0 -S OIL0 +h-S m +S OIL -S RW +S RH +S ZSET ；
wherein S is SET For the target roll gap value, S m0 The bouncing length of the rolling mill is zero-tuning S OIL0 The thickness of the oil film is zero, h is the thickness of the target outlet, S m Is the bouncing length of the rolling mill during rolling, S OIL Thickness of oil film at rolling，S RW For compensating the abrasion loss of the working roll, S RH For compensating the thermal expansion of the working roll S ZSET Roll gap indicator at zero.
To achieve the above and other related objects, the present application provides a device for determining a roll gap value, including:
the data acquisition module is used for acquiring preset rolling data, wherein the preset rolling data comprises preset passes, and preset inlet thickness, preset outlet thickness and preset reduction corresponding to each pass;
the thickness determining module is used for determining the thickness of the current plate blank after the target pass rolling is finished;
the difference value determining module is used for determining a thickness difference value according to the thickness of the current plate blank and the preset outlet thickness of the target pass;
the rolling reduction determining module is used for determining the target rolling reduction of each rolling pass according to the thickness difference value, the number of rolling passes and the corresponding preset rolling reduction of each rolling pass when the absolute value of the thickness difference value is larger than or equal to a preset difference value;
and the roll gap value determining module is used for determining the target roll gap value of each non-rolling pass according to the target reduction of each non-rolling pass.
In an embodiment of the present application, the depression amount determining module includes:
a first determining unit configured to determine a ratio of the thickness difference value to the number of non-rolling passes as a distribution amount;
and the second determining unit is used for determining the target rolling reduction of each non-rolling pass according to the preset rolling reduction of the distribution quantity corresponding to each non-rolling pass.
In an embodiment of the present application, the target pass is a third last pass of the preset passes.
To achieve the above and other related objects, the present application also provides an electronic device, including:
one or more processors;
and a storage device for storing one or more programs, which when executed by the one or more processors, cause the electronic device to implement the method for determining a roll gap value according to any one of the foregoing embodiments.
To achieve the above and other related objects, the present application also provides a computer-readable storage medium having stored thereon a computer program which, when executed by a processor of a computer, causes the computer to perform the method for determining a roll gap value according to any one of the foregoing embodiments.
As described above, the method, the device, the electronic equipment and the storage medium for determining the roll gap value have the following beneficial effects:
according to the method for determining the roll gap value, preset rolling data are obtained, the thickness of a current plate blank is determined after target pass rolling is finished, then a thickness difference value is determined according to the thickness of the current plate blank and the preset outlet thickness of the target pass, when the absolute value of the thickness difference value is larger than or equal to the preset difference value, the target rolling amount of each non-rolling pass is determined according to the thickness difference value, the number of non-rolling passes and the preset rolling amount corresponding to each non-rolling pass, and finally the target roll gap value of each non-rolling pass is determined according to the target rolling amount of each non-rolling pass. And comparing the thickness difference value with a preset difference value after the target pass, and when the thickness difference value is larger than or equal to the preset difference value, determining the target rolling amount of each rolling pass according to the thickness difference value, the number of rolling passes and the preset rolling amount corresponding to each rolling pass, and determining the target roll gap value of each rolling pass according to the target rolling amount.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the application and together with the description, serve to explain the principles of the application. It is apparent that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained from these drawings without inventive effort for a person of ordinary skill in the art. In the drawings:
FIG. 1 is a flow chart illustrating a method of determining a roll gap value according to an exemplary embodiment of the present application;
fig. 2 is a block diagram of a roll gap value determining apparatus according to an exemplary embodiment of the present application.
Detailed Description
Further advantages and effects of the present application will be readily apparent to those skilled in the art from the disclosure in the present specification, by describing embodiments of the present application with reference to the accompanying drawings and preferred examples. The present application may be embodied or carried out in other specific embodiments, and the details of the present application may be modified or changed from various points of view and applications without departing from the spirit of the present application. It should be understood that the preferred embodiments are presented by way of illustration only and not by way of limitation to the scope of the present application.
It should be noted that, the illustrations provided in the following embodiments merely illustrate the basic concepts of the application by way of illustration, and only the components related to the application are shown in the drawings and are not drawn according to the number, shape and size of the components in actual implementation, and the form, number and proportion of the components in actual implementation may be arbitrarily changed, and the layout of the components may be more complex.
In the following description, numerous details are set forth to provide a more thorough explanation of embodiments of the present application, however, it will be apparent to one skilled in the art that embodiments of the present application may be practiced without these specific details, in other embodiments, well-known structures and devices are shown in block diagram form, rather than in detail, in order to avoid obscuring the embodiments of the present application.
Referring to fig. 1, fig. 1 is a flowchart illustrating a method for determining a roll gap value according to an exemplary embodiment of the present application. As can be seen with reference to fig. 1, the method for determining the roll gap value may include:
step S110, obtaining preset rolling data.
The preset rolling data comprise preset passes, and preset inlet thickness, preset outlet thickness and preset reduction corresponding to each pass.
In one embodiment of the present application, preset rolling data may be acquired. The preset rolling data can be preset by an operator according to different rolling parameters and different steel plate rolling requirements. When the steel plate is rolled, corresponding preset rolling data can be determined according to the rolling requirement of the steel plate and rolling mill parameters, so that the rolling requirement of the steel plate is met after the rolling mill rolls the steel plate, namely the thickness of the rolled steel plate meets the preset steel plate thickness. The range value can be determined on the basis of the preset steel plate thickness, and when the rolled steel plate thickness is within the range value, the rolled steel plate can be determined to meet the rolling requirement of the steel plate.
By way of example, the preset steel plate thickness may be 20mm (millimeter).
It should be noted that the sum of the reduction amounts of all the passes may be equal to the total reduction amount of the rolling mill, that is, the outlet thickness of each pass and the preset steel plate thickness hard steel satisfy the steel plate thickness formula, the steel plate thickness formula includes:
wherein rbd is the preset steel plate thickness, the unit is mm, rvbd is the outlet thickness of each pass, the unit is mm, rianf is the initial pass, rie is the final pass, eps (i) is the relative reduction rate of i passes, and the relative reduction rate determination formula of i passes comprises:
where he (i) is the outlet thickness in i passes in mm and he (i-1) is the inlet thickness in i passes in mm.
And step S120, after the target pass rolling is finished, determining the current slab thickness.
Wherein the target pass is not the final pass.
In one embodiment of the present application, the current slab thickness may be determined after the end of the target pass rolling, i.e., the exit thickness of the target pass may be determined.
In an exemplary embodiment, the target pass may be the third last of the preset passes and the total rolling pass may be seven passes. And determining the third last pass as a target pass, and reserving more sufficient allocation amount for the subsequent quantity passes. If the target pass is determined to be the next to last pass, the final pass may not allow the final thickness of the steel sheet to meet the preset steel sheet rolling requirement through one rolling in the case of a large distribution. If the target pass is determined as the fourth last pass or the fifth last pass, the roll gap values of the multiple passes may be adjusted, and the implementation steps are more complicated.
The current slab thickness may be measured by a thickness gauge, for example.
Step S130, determining a thickness difference value according to the current slab thickness and the preset outlet thickness of the target pass.
In one embodiment of the present application, the thickness difference may be determined based on the current slab thickness and the preset outlet thickness of the target pass. That is, the difference obtained by subtracting the preset outlet thickness of the target pass from the current slab thickness can be determined as a thickness difference, and the thickness difference can be positive or negative. When the thickness difference is a positive value, the sum of the actual reduction amounts of all the passes including the target pass is smaller than the sum of the preset reduction amounts, so that the thickness of the current plate blank is larger, and the roll gap value of the rest passes can be changed to change the reduction amounts of the rest passes; when the thickness difference is a negative value, it may be indicated that the sum of actual reduction amounts including all passes before the target pass is greater than the sum of preset reduction amounts, so that the current slab thickness is smaller, and the roll gap values of the remaining passes may be changed to change the reduction amounts of the remaining passes.
In step S140, when the absolute value of the thickness difference is greater than or equal to the preset difference, determining a target rolling reduction of each rolling pass according to the thickness difference, the number of rolling passes and the preset rolling reduction corresponding to each rolling pass.
In one embodiment of the present application, when the absolute value of the thickness difference is greater than or equal to the preset difference, the target reduction for each of the non-rolling passes is determined according to the thickness difference, the number of non-rolling passes, and the corresponding preset reduction for each of the non-rolling passes.
When the absolute value of the thickness difference is smaller than the preset difference, the roll gap value of the rolling mill is not required to be adjusted, and the steel plate can be rolled with the preset roll gap value. The preset value of the rolling mill roll gap can correspond to the preset inlet thickness, the preset outlet thickness and the preset rolling reduction corresponding to each pass, that is, the preset rolling data can comprise the preset inlet thickness, the preset outlet thickness, the preset rolling reduction and the preset roll gap value corresponding to each pass.
The preset difference may be, for example, 0.25mm.
In an exemplary embodiment, the determining the target rolling reduction of each rolling pass in step S140 according to the thickness difference, the number of rolling passes and the preset rolling reduction corresponding to each rolling pass may include step S141 and step S142.
In step S141, the ratio of the thickness difference to the number of non-rolling passes is determined as the distribution amount.
In one embodiment of the present application, the ratio of the thickness difference to the number of non-rolling passes may be determined as the dispense.
For example, the thickness difference may be 0.66mm, the number of non-rolling passes may be 3, and the ratio of the thickness difference to the number of non-rolling passes may be 0.22mm as the dispensing amount.
For example, the thickness difference may be-0.5 mm, the number of non-rolling passes may be 2, and the ratio of the thickness difference to the number of non-rolling passes-0.25 mm may be determined as the dispensing amount.
In step S142, a target rolling reduction of each rolling pass is determined according to the preset rolling reduction corresponding to each rolling pass.
In one embodiment of the present application, the target reduction for each of the non-rolling passes may be determined based on a preset reduction for the allocated amount corresponding to each of the non-rolling passes. That is, the sum of the preset reduction amounts of the allocated amounts corresponding to the target non-rolling passes may be determined as the target reduction amount of the target non-rolling pass, and the target non-rolling pass may be any non-rolling pass.
For example, the dispensing amount may be 0.22mm, the preset reduction corresponding to the target non-rolling pass may be 1.726mm, and the sum of the preset reduction corresponding to the target non-rolling pass and the dispensing amount may be 1.946mm may be determined as the target reduction of the target non-rolling pass.
For example, the dispensing amount may be-0.25 mm, the preset reduction corresponding to the target non-rolling pass may be 1.55mm, and the sum of the preset reduction corresponding to the target non-rolling pass and the 1.80mm may be determined as the target reduction of the target non-rolling pass.
And step S150, determining a target roll gap value of each non-rolling pass according to the target reduction of each non-rolling pass.
In one embodiment of the present application, a target roll gap value for each of the non-rolling passes may be determined based on the target reduction for each of the non-rolling passes at step S150.
In an exemplary embodiment, when the target pass is the third last pass of the preset passes, the step S150 of determining the target roll gap value of each non-rolling pass according to the target reduction of each non-rolling pass may include steps S151 to S153.
Step S151, determining the target outlet thickness of the first non-rolling pass according to the current slab thickness and the target reduction of the first non-rolling pass.
Wherein the first non-rolling pass is the penultimate pass.
In one embodiment of the present application, the sum between the current slab thickness and the target reduction for the first non-rolling pass may be determined as the target exit thickness for the first non-rolling pass.
Illustratively, table 1 shows preset rolling data for the last three passes in the rolling process.
TABLE 1 preset rolling data for three last passes in a rolling process
Pass of Preset inlet thickness/mm Preset outlet thickness/mm Preset depression/mm
Last third pass 25.450 22.547 2.903
Penultimate pass 22.547 20.821 1.726
Final pass 20.821 13.849 0.982
For example, the preset exit thickness of the third last pass may be 22.547mm, the current slab thickness may be 23mm, the thickness difference is 0.453mm, the thickness difference is greater than the preset difference by 0.25mm, the ratio of the thickness difference to the number of non-rolled passes 2 is 0.227mm (0.2265 in practice, but three decimal places may be selected to remain), the preset reduction of the second last pass may be 1.726mm, and the sum of the preset reduction 1.726mm and 1.953mm of the allocated amount of 0.227mm corresponding to the second last pass may be determined as the target reduction of the second last pass, that is, the target reduction corresponding to the second last pass in table 2. Table 2 shows the target inlet thickness, target outlet thickness, and target reduction for the last two passes when the absolute value of the thickness difference is greater than or equal to the preset difference.
TABLE 2 target inlet thickness, target outlet thickness, and target reduction for two last passes
Pass of Target inlet thickness/mm Target outlet thickness/mm Target depression/mm
Penultimate pass 23 21.047 1.726+0.227
Final pass 21.047 19.838 0.982+0.227
In step S152, the target outlet thickness of the second non-rolling pass is determined according to the target outlet thickness of the first non-rolling pass and the target reduction of the second non-rolling pass.
Wherein the second non-rolling pass is the last pass.
In one embodiment of the present application, the target outlet thickness of the first non-rolling pass is the target inlet thickness of the second non-rolling pass, and thus the target outlet thickness of the second non-rolling pass may be determined according to the target outlet thickness of the first non-rolling pass and the target reduction of the second non-rolling pass.
Step S153, determining a target roll gap value of each non-rolling pass according to a roll gap determination formula and a target outlet thickness of each non-rolling pass, wherein the roll gap determination formula comprises:
S SET ＝S m0 -S OIL0 +h-S m +S OIL -S RW +S RH +S ZSET ；
wherein S is SET For the target roll gap value, S Z ＝S m0 -S OIL0 Roll gap value at zero adjustment, S m0 The bouncing length of the rolling mill is zero-tuning S OIL0 Oil film thickness at zero-shift, S 0 ＝h-S m For the actual value of the roll gap, h is the target outlet thickness, S m Is the bouncing length of the rolling mill during rolling, S OIL For the thickness of the oil film during rolling, S RW For compensating the abrasion loss of the working roll, S RH For compensating the thermal expansion of the working roll S ZSET Roll gap indicator at zero.
In one calculation, the target roll gap value and the target outlet thickness are data corresponding to the same non-rolling pass.
By using the method for determining the roll gap value, the condition of rolling thickness or thinning of the steel plate in multiple batches and large batches can be avoided.
In one embodiment of the present application, after the roll gap value is determined by using the method for determining a roll gap value provided in the embodiment of the present application to finish rolling a steel plate, the actual inlet thickness, the actual outlet thickness and the actual rolling reduction (which may be the target rolling reduction) of each pass in the rolling process may be determined as target preset data, when the same rolling mill is used to roll a steel plate with the same thickness, the target preset data may be used to perform rolling, and in the rolling process, the roll gap value may also be determined by using the method for determining a roll gap value provided in the embodiment of the present application.
In summary, according to the scheme of the embodiment of the application, the preset rolling data is obtained, the current slab thickness is determined after the target pass rolling is finished, then the thickness difference value is determined according to the current slab thickness and the preset outlet thickness of the target pass, when the absolute value of the thickness difference value is greater than or equal to the preset difference value, the target rolling reduction of each non-rolling pass is determined according to the thickness difference value, the number of non-rolling passes and the preset rolling reduction corresponding to each non-rolling pass, and finally the target roll gap value of each non-rolling pass is determined according to the target rolling reduction of each non-rolling pass. And comparing the thickness difference value with a preset difference value after the target pass, and when the thickness difference value is larger than or equal to the preset difference value, determining the target rolling amount of each rolling pass according to the thickness difference value, the number of rolling passes and the preset rolling amount corresponding to each rolling pass, and determining the target roll gap value of each rolling pass according to the target rolling amount.
Fig. 2 is a block diagram of a roll gap value determining apparatus according to an exemplary embodiment of the present application. As shown in fig. 2, the exemplary roll gap value determining apparatus 200 includes:
the data acquisition module 210 is configured to acquire preset rolling data, where the preset rolling data includes preset passes, and a preset inlet thickness, a preset outlet thickness, and a preset reduction corresponding to each pass;
a thickness determining module 220, configured to determine a current slab thickness after the target pass rolling is completed;
the difference determining module 230 is configured to determine a thickness difference according to the current slab thickness and a preset outlet thickness of the target pass;
the reduction determining module 240 is configured to determine, when the absolute value of the thickness difference is greater than or equal to a preset difference, a target reduction of each rolling pass according to the thickness difference, the number of rolling passes and a preset reduction corresponding to each rolling pass;
the roll gap value determining module 250 is configured to determine a target roll gap value for each rolling pass according to the target reduction of each rolling pass.
In an exemplary embodiment, the depression amount determination module may include:
a first determining unit for determining a ratio of the thickness difference value to the number of non-rolling passes as a distribution amount;
and the second determining unit is used for determining the target rolling reduction of each non-rolling pass according to the preset rolling reduction corresponding to each non-rolling pass in the distribution amount.
In an exemplary embodiment, the target pass may be the third last pass of the preset passes.
It should be noted that, the device for determining the roll gap value provided in the foregoing embodiment and the method for determining the roll gap value provided in the foregoing embodiment belong to the same concept, and the specific manner in which each module and unit perform the operation has been described in detail in the method embodiment, which is not described herein again. In practical application, the device for determining a roll gap value provided in the above embodiment may distribute the functions to different functional modules according to needs, that is, the internal structure of the device is divided into different functional modules to complete all or part of the functions described above, which is not limited herein.
The embodiment of the application also provides electronic equipment, which comprises: one or more processors; and a storage device for storing one or more programs, which when executed by the one or more processors, cause the electronic device to implement the method for determining a roll gap value provided in each of the above embodiments.
The flowcharts and block diagrams in the figures illustrate the architecture, functionality, and operation of possible implementations of systems, methods and computer program products according to various embodiments of the present application. Where each block in the flowchart or block diagrams may represent a module, segment, or portion of code, which comprises one or more executable instructions for implementing the specified logical function(s). It should also be noted that, in some alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. It will also be noted that each block of the block diagrams or flowchart illustration, and combinations of blocks in the block diagrams or flowchart illustration, can be implemented by special purpose hardware-based systems which perform the specified functions or acts, or combinations of special purpose hardware and computer instructions.
The units involved in the embodiments of the present application may be implemented by means of software, or may be implemented by means of hardware, and the described units may also be provided in a processor. Wherein the names of the units do not constitute a limitation of the units themselves in some cases.
Another aspect of the present application also provides a computer-readable storage medium having stored thereon a computer program which, when executed by a processor of a computer, causes the computer to perform the method of determining a roll gap value provided in the above-described respective embodiments. The computer-readable storage medium may be included in the electronic device described in the above embodiment or may exist alone without being incorporated in the electronic device.
Another aspect of the present application also provides a computer program product or computer program comprising computer instructions stored in a computer readable storage medium. The processor of the computer apparatus reads the computer instructions from the computer-readable storage medium, and the processor executes the computer instructions so that the computer apparatus performs the method of determining the roll gap value provided in the above-described respective embodiments.
The above embodiments are merely illustrative of the principles of the present application and its effectiveness and are not intended to limit the present application. Modifications and variations may be made to the above-described embodiments by those of ordinary skill in the art without departing from the spirit and scope of the present application. It is therefore contemplated that the appended claims will cover all such equivalent modifications and changes as fall within the true spirit and scope of the disclosure.

Claims (10)

1. A method for determining a roll gap value, the method comprising:
acquiring preset rolling data, wherein the preset rolling data comprises preset passes, and preset inlet thickness, preset outlet thickness and preset reduction corresponding to each pass;
after the target pass rolling is finished, determining the thickness of the current plate blank, wherein the target pass is not the final pass;
determining a thickness difference value according to the current slab thickness and the preset outlet thickness of the target pass;
when the absolute value of the thickness difference is larger than or equal to a preset difference, determining the target rolling reduction of each rolling pass according to the thickness difference, the number of rolling passes and the preset rolling reduction corresponding to each rolling pass;
and determining a target roll gap value of each non-rolling pass according to the target reduction of each non-rolling pass.
2. The method according to claim 1, wherein determining the target reduction of each rolling pass according to the thickness difference, the number of rolling passes and the preset reduction corresponding to each rolling pass comprises:
determining the ratio of the thickness difference value to the number of non-rolling passes as a distribution amount;
and determining the target rolling reduction of each non-rolling pass according to the distribution quantity and the preset rolling reduction corresponding to each non-rolling pass.
3. The method of claim 2, wherein the target pass is a third-to-last pass of the preset passes.
4. A method of determining a roll gap value according to claim 3, wherein the determining a target roll gap value for each non-rolling pass based on the target reduction for each non-rolling pass comprises:
determining a target outlet thickness of a first non-rolling pass according to the current slab thickness and a target reduction of the first non-rolling pass, wherein the first non-rolling pass is a penultimate pass;
determining the target outlet thickness of a second non-rolling pass according to the target outlet thickness of the first non-rolling pass and the target reduction of the second non-rolling pass, wherein the second non-rolling pass is a final pass;
and determining a target roll gap value of each non-rolling pass according to the target outlet thickness corresponding to each non-rolling pass.
5. The method according to claim 4, wherein determining the target roll gap value for each non-rolling pass according to the target outlet thickness for each non-rolling pass comprises:
determining a target roll gap value for each non-rolling pass according to a roll gap determination formula and a target outlet thickness for each non-rolling pass, wherein the roll gap determination formula comprises:
S SET ＝S m0 -S OIL0 +h-S m +S OIL -S RW +S RH +S ZSET ；
wherein S is SET For the target roll gap value，S m0 The bouncing length of the rolling mill is zero-tuning S OIL0 The thickness of the oil film is zero, h is the thickness of the target outlet, S m Is the bouncing length of the rolling mill during rolling, S OIL For the thickness of the oil film during rolling, S RW For compensating the abrasion loss of the working roll, S RH For compensating the thermal expansion of the working roll S ZSET Roll gap indicator at zero.
6. A roll gap value determining apparatus, the apparatus comprising:
the data acquisition module is used for acquiring preset rolling data, wherein the preset rolling data comprises preset passes, and preset inlet thickness, preset outlet thickness and preset reduction corresponding to each pass;
the thickness determining module is used for determining the thickness of the current plate blank after the target pass rolling is finished;
the difference value determining module is used for determining a thickness difference value according to the thickness of the current plate blank and the preset outlet thickness of the target pass;
the rolling reduction determining module is used for determining the target rolling reduction of each rolling pass according to the thickness difference value, the number of rolling passes and the corresponding preset rolling reduction of each rolling pass when the absolute value of the thickness difference value is larger than or equal to a preset difference value;
and the roll gap value determining module is used for determining the target roll gap value of each non-rolling pass according to the target reduction of each non-rolling pass.
7. The roll gap value determining apparatus as claimed in claim 6, wherein the reduction determining module includes:
a first determining unit configured to determine a ratio of the thickness difference value to the number of non-rolling passes as a distribution amount;
and the second determining unit is used for determining the target rolling reduction of each non-rolling pass according to the preset rolling reduction of the distribution quantity corresponding to each non-rolling pass.
8. The apparatus according to claim 6, wherein the target pass is a third-to-last pass of the preset passes.
9. An electronic device, the electronic device comprising:
one or more processors;
storage means for storing one or more programs that, when executed by the one or more processors, cause the electronic device to implement the method of determining a roll gap value as claimed in any one of claims 1 to 5.
10. A computer-readable storage medium, having stored thereon a computer program which, when executed by a processor of a computer, causes the computer to perform the method of determining a roll gap value according to any one of claims 1 to 5.
CN202310593917.6A 2023-05-24 2023-05-24 Roll gap value determining method and device, electronic equipment and storage medium Pending CN116550768A (en)

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CN202310593917.6A CN116550768A (en) 2023-05-24 2023-05-24 Roll gap value determining method and device, electronic equipment and storage medium

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