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Method for setting full-length tension of cold rolling processing line

A tension setting and setting method technology, applied in the field of cold-rolled strips, can solve problems such as frequent tension changes, achieve the effect of improving quality and output, and avoiding frequent tension changes

Inactive Publication Date: 2014-01-08
SHOUGANG CORPORATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The invention provides a method for setting the tension of the whole line of the cold rolling processing line, which solves the problem of frequent tension changes caused by the change of steel type and specification between coils of incoming steel coils

Method used

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  • Method for setting full-length tension of cold rolling processing line
  • Method for setting full-length tension of cold rolling processing line
  • Method for setting full-length tension of cold rolling processing line

Examples

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Embodiment Construction

[0020] The method for setting the overall tension of the cold rolling treatment line provided by the embodiment of the present invention includes the establishment of a tension setting model and the optimization of the acquisition of the tension setting value.

[0021] The establishment of the tension setting model is to establish a mathematical model formula by using instrumental regression for the tension values ​​corresponding to different thicknesses and different widths of the existing tension gauge. Based on the function T=f(σ)f(b)f(h)f(b,h) as the basic model, the tension of each section is set, and the tension setting value of each section is calculated to obtain the tension table.

[0022] Take the uncoiler as an example, where,

[0023] f ( σ ) = a 1 σ a 2 + a 3 ...

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Abstract

The invention discloses a method for setting full-length tension of a cold rolling processing line. The method for setting full-length tension of the cold rolling processing line includes obtaining of a set tension value. The obtaining of the set tension value includes the following steps that a record set conforming to the steel type and the width value of incoming steel rolls is found out in a tension list; the thickness section of the thickness of the incoming steel rolls in the record is found out and composed of two adjacent thicknesses in the record; a tension value which is in the record and corresponds to the thickness close to the thickness distance of the incoming steel rolls in the two adjacent thicknesses is selected as the set tension value. According to the method for setting full-length tension of the cold rolling processing line, band steel has proper and stable tension, the problem that frequent variation of tension caused by variation of steel types and specifications among rolls in the incoming steel rolls is solved and thus, the quality and the productivity of steel coil products are improved.

Description

technical field [0001] The invention relates to the technical field of cold-rolled strips, in particular to a method for setting the overall tension of a cold-rolled processing line. Background technique [0002] In continuous cold rolling production, ensuring proper and stable tension of strip steel is an important means to improve product quality and output. When the steel strip produced is changed in specification, the tension of the strip steel tends to fluctuate. For example, when the steel produced is SPCC, its width is 1250mm, and its thickness is 0.60mm and 0.61mm respectively, the tension of the two specifications calculated by the original tension model The set value belongs to the range of two thickness group intervals. In this case, the difference between the entrance tension set value of the two specifications will be about 0.8kN, and the difference between the furnace zone tension set value will be about 1.3kN. The actual tension value in the transition zone o...

Claims

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Application Information

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IPC IPC(8): B21B37/48
Inventor 齐海英乔建军闻达孙建华孔凡庆
Owner SHOUGANG CORPORATION
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