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Control method of coiling tension of oriented silicon steel continuous annealing unit

A technology of coiling tension and continuous withdrawal unit, which is used in rolling mill control devices, metal rolling, metal rolling, etc., can solve the problems of poor shape of incoming material and no clear control method for edge cracks of strip steel.

Active Publication Date: 2014-12-31
BAOSHAN IRON & STEEL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0023] The shape of the incoming material is bad, and there is no clear control method for the cracking of the edge of the strip during coiling

Method used

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  • Control method of coiling tension of oriented silicon steel continuous annealing unit
  • Control method of coiling tension of oriented silicon steel continuous annealing unit
  • Control method of coiling tension of oriented silicon steel continuous annealing unit

Examples

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Effect test

Embodiment

[0112] In the coiling process, in order to avoid the edge bursting of the strip, and also to avoid the tower shape caused by the poor shape of the edge, a quantitative amount of misalignment and a fixed misalignment period are used for coiling. The control reference is :

[0113] Misalignment depth is 15mm--20mm

[0114] Misalignment period is 20mm--30mm

[0115] In the present invention, the amount of misalignment adopted is the coiling control mode of edge centering; the misalignment cycle is controlled by the coiling thickness, and this method is not affected by the thickness of the steel strip.

[0116] The stated tension is the unit tension of the cross-section of the steel strip. The setting process is based on N / mm2. Through program control, this unit tension mode control can avoid tension errors caused by differences in product thickness and width.

[0117] The tension drop slope between the two platforms is calculated as the ratio of the tension difference between t...

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Abstract

The invention discloses a control method of coiling tension of an oriented silicon steel continuous annealing unit, and is characterized in that, tension parameters of the entire steel coil in the coiling process are segmentally controlled according to the size of coiling diameter; the steel coil segment with small coiling diameter is provided with 2 constant tension platforms; coiling diameter parameters of steel coil between the constant tension platforms are determined, a coiling tension decline slope is between the two constant tension platforms, coiling tension of an inner core steel coil in the coiling process is steel coil gradientally controlled, and according to the change of coiling diameter of the steel coil, the coiling tension of strip steel can be constantly adjusted, so that the coiling effect of the inner core steel coil is more stable.

Description

technical field [0001] The present invention relates to metal smelting, in particular, the present invention relates to a method for controlling the coil shape of a thin strip of oriented silicon steel during the coiling process, which is applicable to the control of the coiling method for thinner strip steel. Background technique [0002] The production process of oriented silicon steel in cold rolling is as follows: Finishing (packing into storage. [0003] In addition, the product thickness of grain-oriented silicon steel is usually between 0.18mm--0.35mm; and the insulating coating annealing unit is the last continuous annealing unit for grain-oriented silicon steel. Therefore, the bonding force between the layers of the strip steel in the grain-oriented silicon steel coil has been greatly affected. Furthermore, since the grain-oriented silicon steel strip is relatively thin, the strip steel supporting force of the steel coil located in the inner core is completely ins...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21C47/02B21B37/00
Inventor 卢纪平郭万青余伟
Owner BAOSHAN IRON & STEEL CO LTD
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