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Control method for strip shape in rolling of cold-rolling strip steel by two-stand temper mill

A technology for shape control and cold-rolled strip, applied in contour control and other directions, and can solve problems such as not being fully satisfied

Active Publication Date: 2012-09-26
BAOSHAN IRON & STEEL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing method of compensating and controlling the bending force according to the change of rolling force or rolling speed cannot fully meet the requirements of high-precision strip steel plate during the double-stand temper rolling process of ultra-thin strip steel, especially during the acceleration and deceleration stages. shape control requirements

Method used

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  • Control method for strip shape in rolling of cold-rolling strip steel by two-stand temper mill
  • Control method for strip shape in rolling of cold-rolling strip steel by two-stand temper mill
  • Control method for strip shape in rolling of cold-rolling strip steel by two-stand temper mill

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Embodiment

[0190] Taking a two-frame six-roll skin pass mill as an example, the realization process of the flatness feedforward control method of the present invention is described in detail.

[0191] like image 3 Shown, the equipment composition relevant to the present invention in the two-frame leveling machine comprises:

[0192] No. 1 rack inlet tension meter used to detect the tension of the No. 1 rack inlet strip;

[0193] Frame leveling machine No. 1, with upper and lower work rolls, upper and lower intermediate rolls, upper and lower support rolls, used to control the shape of the work roll and intermediate roll bending of the steel plate at the exit of the frame Executing agencies, etc.;

[0194] The No. 1 rack side pressure instrument Loadcell used to detect the rolling force of the No. 1 rack;

[0195] Inter-frame tension meter for detecting strip tension between No. 1 rack and No. 2 rack;

[0196] Frame leveling machine No. 2, with upper and lower work rolls, upper and l...

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Abstract

The invention relates to a rolling method of cold-rolling strip steel, in particular to a feedforward control method of cold-rolling strip steel strip shape on a two-stand temper mill. A control method for the strip shape of the two-stand temper mill of the cold-rolling strip steel conducts feedforward control compensation for working roll bending force or intermediate roll bending force of two stands separately to reduce the combined impact of temper rolling force and tensile force on the strip steel strip shape in the processes of acceleration and deceleration on the basis of conventional strip shape feedback control centered on No. 2 stand, and based on the variation of the actual measured temper rolling force of the two stands, the tension of stand entry, the tension between stands and the tension of stand exit. The control method on the one hand improves the strip shape quality of the strip steel after the strip steel is rolled, and on the other hand enhances the stability in the process of temper rolling.

Description

technical field [0001] The invention relates to a rolling method of cold-rolled steel strip, in particular to a feed-forward control method for cold-rolled steel strip shape on a double-stand tempering machine. Background technique [0002] Both the theory and practice of cold rolling show that the tension has a relatively large influence on the flatness of the strip when cold rolling or flattening the strip. Tension changes mainly affect the strip shape by changing the distribution of tension along the width of the strip on the metal flow in the rolling deformation zone. When the tension is small, the strip is prone to edge waves; when the tension is high, the strip is prone to edge waves. When the strip with lower tension has side waves, as the tension increases, the side waves gradually decrease until they disappear, and the middle waves gradually increase. figure 1 Under the condition that the other process parameters of the double-stand skin pass mill are identica...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21B37/28
Inventor 顾廷权吴首民王康健盛杰李秀军高泽恒
Owner BAOSHAN IRON & STEEL CO LTD
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