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Integrated control method of cold-rolling strip steel flatness and lateral thickness difference

A cold-rolled strip, comprehensive control technology, applied in rolling mill control device, metal rolling, profile control, etc. Reduce the effect of manual intervention

Active Publication Date: 2010-03-31
BAOSHAN IRON & STEEL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, thin strip steel is prone to strip breakage during high tension rolling.
When the strip is corrugated, even with high tension rolling, the possibility of strip breakage is reduced

Method used

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  • Integrated control method of cold-rolling strip steel flatness and lateral thickness difference
  • Integrated control method of cold-rolling strip steel flatness and lateral thickness difference
  • Integrated control method of cold-rolling strip steel flatness and lateral thickness difference

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Embodiment Construction

[0058] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0059] see Figure 4 , a method for comprehensively controlling the flatness and transverse thickness difference of cold-rolled strip steel, including moderately controlling the cross-sectional shape of the strip steel in the upstream stand of the cold rolling mill, and focusing on controlling the flatness of the strip steel in the downstream stand; Based on the actual measurement of the section shape and flatness of the hot-rolled incoming material by the profiler installed at the entrance of the No. The flatness meter installed at the exit of the cold rolling mill actually measures the flatness of the cold-rolled strip, and performs feed-forward control on the cross-sectional shape of the strip with the focus on the upstream stand, especially the No. 1 stand, and the downstream stand, especially the final stand. Feedback control of the flatn...

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Abstract

The invention discloses an integrated control method of cold-rolling strip steel flatness and lateral thickness difference, comprising: moderately and mainly controlling the shape of the strip steel section on the upstream rack of a cold-rolling mill, and mainly controlling strip steel flatness on the downstream rack; based on a profiler configured on a No.1 rack inlet of the cold-rolling mill, actually measuring and hot rolling incoming material section shape and flatness and rolling technological parameter measured values of each rack, wherein the rolling technological parameter measured values comprise rolling force and a plate shape regulating mechanism measured value; actually measuring the cold-rolling strip steel flatness on the basis of a shape meter configured on the cold-rollingmill outlet; performing feed-forward control to the shape of the strip steel section by taking the upstream rack, in particular the No. 1 rack as a key point; and performing feedback control to the strip steel flatness by taking the downstream rack, in particular an end rack as a key point to realize integrated control to the cold-rolling strip steel flatness and lateral thickness difference. Theinvention performs integrated coordination control by the strip steel flatness and section shape and reduces cold-rolling strip steel lateral thickness difference on the basis of further improving cold-rolling strip steel flatness quality.

Description

technical field [0001] The invention relates to a rolling method of strip steel, in particular to a method for comprehensively controlling the flatness and transverse thickness difference of strip steel on a cold rolling mill. Background technique [0002] The geometric dimension accuracy of the plate and strip includes the plate thickness accuracy, that is, the longitudinal thickness difference, flatness and transverse thickness difference, and the plate width and other quality indicators. Strip profile usually refers to flatness. Since flatness has a close internal relationship with lateral thickness difference, the generalized strip profile includes flatness and lateral thickness difference at the same time, that is, the shape of the cross-section of the plate, with convexity, edge Characteristic indicators such as drop and wedge shape. Thickness control and shape control are two key technologies in the field of strip rolling. The control of longitudinal thickness diffe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21B37/28B21B37/16
Inventor 顾廷权何汝迎唐成龙陈培林张永杰李山青李红梅熊斐王瑞庭
Owner BAOSHAN IRON & STEEL CO LTD
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