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A Method for Controlling Beading Defects in the Middle of Cold-rolled Strip Steel

A cold-rolled strip steel and strip steel technology, applied in the direction of contour control, rolling force/roll gap control, metal rolling, etc., can solve the problems of strip surface instability, uneven coloring, and ribbing in the middle, and achieve The effect of solving the ribbing defect in the middle, reducing buckling deformation, and smoothing the section profile

Active Publication Date: 2020-02-04
BEIJING SHOUGANG CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The "stringing" defect is the bulging phenomenon formed on the surface of the steel coil during the coiling process of the strip steel. It is macroscopically manifested as a band-shaped uplift of the cold-rolled coil along the rolling direction, which causes additional waves to be generated in the defect area of ​​the strip steel uncoiling, and the surface of the strip steel Form local instability and uneven coloring will occur, which will significantly affect the appearance quality and performance of the steel plate, resulting in product degradation or even scrapping
In the existing production process for cold-rolled strip steel, due to process limitations, it is easy to have central beading defects

Method used

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  • A Method for Controlling Beading Defects in the Middle of Cold-rolled Strip Steel
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  • A Method for Controlling Beading Defects in the Middle of Cold-rolled Strip Steel

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Embodiment Construction

[0032] The embodiments of the present application provide a method for controlling the beading defect in the middle of the cold-rolled strip, so as to solve the technical problem of the beading defect in the middle of the cold-rolled strip in the prior art.

[0033] In order to better understand the above-mentioned technical solution, the above-mentioned technical solution will be described in detail below in conjunction with the description and specific implementation methods. It should be understood that the embodiments of the present invention and the specific features in the embodiments are detailed descriptions of the technical solution of the application, and It is not a limitation to the technical solutions of the present application, and the embodiments of the present application and the technical features in the embodiments can be combined without conflict.

[0034] A method for controlling the ribbing defect in the middle of cold-rolled strip steel, comprising:

[00...

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Abstract

The invention belongs to the technical field of steel rolling and discloses a method for controlling the bulging defect of the middle of cold-rolling strip steel. The method comprises the steps that in the production process of hot rolling, based on the thickness of the strip steel, the thickness tolerance of the strip steel is controlled, and the thickness uniformity, in the width direction, of the strip steel is improved; based on the width of the strip steel, the convexity degree of the strip steel is controlled, and the co-plate difference of the strip steel is reduced; in the cold rollingproduction process, the reduction rate of a first pass of cold rolling is controlled, and the flow uniformity of metal on the surface of the strip steel is maintained; and based on the thickness of astrip steel finished product, the coiling tension generated after degreasing is controlled, and the buckling deformation of the strip steel is reduced. By means of the method, the bulging defect of the middle of the cold-rolling strip steel can be eliminated.

Description

technical field [0001] The invention relates to the technical field of steel rolling, in particular to a method for controlling beading defects in the middle of cold-rolled strip steel. Background technique [0002] The "stringing" defect is the bulging phenomenon formed on the surface of the steel coil during the coiling process of the strip steel. It is macroscopically manifested as a band-shaped uplift of the cold-rolled coil along the rolling direction, which causes additional waves to be generated in the defect area of ​​the strip steel uncoiling, and the surface of the strip steel The formation of local instability will lead to uneven coloring, which will significantly affect the appearance quality and performance of the steel plate, resulting in product degradation or even scrapping. In the existing production process for cold-rolled strip steel, due to technological limitations, it is easy to have central beading defects. Contents of the invention [0003] The inv...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21B37/28B21B37/58
CPCB21B37/28B21B37/58B21B2201/16B21B2263/08
Inventor 刘兰霄吴耐周娜许克好关建东王伦张嘉琪于洋
Owner BEIJING SHOUGANG CO LTD
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