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Strip deviation correction control method for cold rolling pickling unit

A technology of pickling unit and control method, applied in rolling mill control device, metal rolling, metal rolling, etc., can solve the problem that the quality of finished strip steel cannot be improved, the occurrence rate of burrs cannot be reduced, and the strip deviation cannot be effectively compensated. question

Active Publication Date: 2013-07-17
BAOSHAN IRON & STEEL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] For this reason, the previous technology cannot effectively compensate for the strip deviation caused by equipment installation errors, reduce the tension difference on both sides of the disc shears, and reduce the incidence of burrs, so that the quality of the finished strip cannot be improved.

Method used

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  • Strip deviation correction control method for cold rolling pickling unit
  • Strip deviation correction control method for cold rolling pickling unit
  • Strip deviation correction control method for cold rolling pickling unit

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Experimental program
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Embodiment 1

[0050] In order to further illustrate the application process of the related technology described in the present invention, the promotion and application of the disc shears in the 1420 pickling mill of Baosteel Cold Rolling Plant is now used to describe the comprehensive control process of the strip deviation correction of the pickling mill in detail.

[0051] (1) Collect the equipment parameters of the pickling unit, and the result is that the center line of the pickling unit and the rolling center line of the cold rolling unit have a deviation of 70 mm, the number of horizontal rolls of the pickling unit is 20, and the allowable maximum deviation of the disc shears The measurement is 10mm, and the maximum allowable offset angle of the horizontal roller is 5°;

[0052] (2) Collect the process parameters of the pickling unit, mainly including the maximum tension setting value of the unit 25MPa, and the minimum tension setting value of the unit 15MPa. Commonly used typical tens...

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Abstract

The invention relates to a strip deviation correction control method for a cold rolling pickling unit, which is characterized in that operation of optimally setting the horizontal deviation of relevant rollers in a pickling section is taken as a basis, the minimal deviation of a strip in front of a circle shear is used as a target, and the horizontal deviation of a special roller in the pickling section is quantitatively and precisely set, so the deviation of the steel strip caused by the installation error of equipment can be effectively compensated, the tension difference at two sides of the circle shear can be reduced, the burr generation rate can be reduced, and the quality of a finished product steel strip can be improved.

Description

technical field [0001] The invention belongs to the technical field of cold-rolling and pickling, and in particular relates to a comprehensive control method for strip deviation correction suitable for a cold-rolling and pickling unit. Background technique [0002] At present, for the cold-rolled pickling unit, due to equipment installation, factory design and other reasons, there will be a large offset between the center line of the pickling unit and the rolling center line of the cold-rolling unit, making the strip in the disc shear There are deviations in the area, resulting in defects such as poor shearing quality in the disc shearing process and unilateral waves in the cold continuous rolling process. [0003] Taking Baosteel 1420 pickling mill as an example, the deviation between the center line of the pickling unit and the rolling center line of the cold rolling unit reaches 70mm (such as figure 1 Shown), so that defects such as burrs, poor shearing, and excessive sh...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21B37/68B21B45/02
Inventor 王康健郑涛王晓峰陈杰李伟
Owner BAOSHAN IRON & STEEL CO LTD
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