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Method and device for compensating cold continuous rolling forward slip value

A technology of forward slip value and compensation value, applied in the field of cold continuous rolling production, can solve the problems of inaccurate forward slip value, inability to guarantee the stability of the rolling process, affecting the quality of strip steel products, etc. The effect of improving calculation accuracy and ensuring the quality of strip steel products

Active Publication Date: 2018-01-16
BEIJING SHOUGANG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the problems existing in the prior art, the embodiment of the present invention provides a method and device for compensating the front slip value of cold tandem rolling, which is used in the production process of cold tandem rolling production line, due to the low calculation accuracy of the front slip model, The calculated forward slip value is inaccurate, which leads to the unguaranteed stability of the rolling process, which in turn affects the technical problems of the strip product quality

Method used

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  • Method and device for compensating cold continuous rolling forward slip value
  • Method and device for compensating cold continuous rolling forward slip value
  • Method and device for compensating cold continuous rolling forward slip value

Examples

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Embodiment 1

[0040] This embodiment provides a method for compensating the slip value before tandem cold rolling, such as figure 1 As shown, the method includes:

[0041] S101, determine the forward slip compensation factor;

[0042] In this step, in order to be able to perform online compensation for the forward slip model in the cold rolling process control system and improve the accuracy of the forward slip model, it is first necessary to determine the forward slip compensation factor. The forward slip compensation factor includes: the forward slip coefficient of each stand Base a b[i] And the adjustment factor an[i] of the number of rolled coils. After determining the front slip compensation factor, it is also necessary to determine the roll shape of the last frame of the current production line. The roll shape of the last frame includes: wool roller and bachelor.

[0043] S102: Determine a theoretical forward slip value according to the forward slip compensation factor;

[0044] After the f...

Embodiment 2

[0066] Corresponding to the first embodiment, this embodiment provides a device for compensating the slip value before tandem cold rolling, such as figure 2 As shown, the device includes: a first determining unit 21, a second determining unit 22, a third determining unit 23, and a compensation unit 24; wherein,

[0067] In order to make online compensation for the forward slip model in the cold rolling process control system and improve the accuracy of the forward slip model, the first determining unit 21 is used to determine the forward slip compensation factor, and the forward slip compensation factor includes: The base of the coefficient and the adjustment factor of the number of rolled coils.

[0068] After determining the front slip compensation factor, it is also necessary to determine the roll shape of the last frame of the current production line. The roll shape of the last frame includes: wool roller and bachelor.

[0069] After the roller type of the final frame is determ...

Embodiment 3

[0089] In actual applications, when using the method provided in the first embodiment and the device provided in the second embodiment to compensate the forward slip value of a tandem cold rolling mill #1 and #2, the details are as follows:

[0090] In order to make online compensation for the forward slip model in the cold rolling process control system and improve the accuracy of the forward slip model, it is first necessary to determine the forward slip compensation factor, and then determine the roll shape of the last stand of the current production line. Roll types include: wool roller and bachelor. The forward slip compensation factor includes: the base a of the forward slip coefficient of each frame b[i] And the adjustment factor an[i] of the number of rolled coils.

[0091] After the forward slip compensation factor is determined, the theoretical forward slip value is determined according to the forward slip compensation factor.

[0092] Specifically, the forward slip compen...

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Abstract

The embodiment of the invention provides a method and device for compensating a cold continuous rolling forward slip value. The method comprises the steps that a forward slip compensation factor is determined, wherein the forward slip compensation factor comprises a cardinal number of all rack forward slip coefficients and an adjustment factor of the number of rolling coils; according to the forward slip compensation factor, a theoretical forward slip value is determined; historical forward slip data in a same production time interval is acquired; according to the historical forward slip data,an actual forward slip value is determined; based on the actual forward slip value, the value of the forward slip compensation factor is adjusted so that the theoretical forward slip value can be compensated. Therefore, the forward slip compensation factor is introduced into the calculation process of the forward slip value, and the value of the forward slip compensation factor is adjusted in real time according to the historical actual production data, so that the calculation precision of the forward slip value is improved, then the rolling stability is guaranteed, and the quality of strip steel products is guaranteed.

Description

Technical field [0001] The invention belongs to the technical field of cold tandem rolling production, and in particular relates to a method and device for compensating the slip value before cold tandem rolling. Background technique [0002] In the cold tandem rolling production line process control model, the forward slip model is used as the basis for the speed control between the stands and the strip thickness control. The calculation accuracy of the forward slip model matches the speed of the adjacent stands during the strip threading process during continuous rolling. Ensuring good rolling stability plays a vital role, directly affecting the rolling stability of cold-rolled products during the rolling process and the product yield. [0003] The cold tandem rolling process is a typical multi-variable, time-varying, strongly coupled and non-linear process. Various factors influence each other and finally act on the roll gap deformation area. The complexity of the rolling proces...

Claims

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Application Information

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IPC IPC(8): B21B37/00
Inventor 曹静刘磊张亮刘玉金刘海超胡志远陈丹郭立伟
Owner BEIJING SHOUGANG CO LTD
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