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Method for controlling orange peel reticulate pattern defects on surface of strip steel

A control method and strip steel technology, applied in the direction of contour control, metal rolling, manufacturing tools, etc., can solve problems such as orange-peel reticulate defects on the surface of strip steel, reduce orange-peel reticulate defects and prolong roll change Cycle, eliminate the effect of severe wear

Active Publication Date: 2015-10-28
SHOUGANG CORPORATION +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The invention provides a method for controlling the orange-peel-like reticulation defect on the surface of the strip steel, which solves the problem of the orange-peel-like reticulation defect on the surface of the strip steel caused by the wear of the work rolls in the prior art, and achieves a great reduction in the control of the strip steel reticulation defect. Effect of Surface Orange Peel Defects

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  • Method for controlling orange peel reticulate pattern defects on surface of strip steel
  • Method for controlling orange peel reticulate pattern defects on surface of strip steel
  • Method for controlling orange peel reticulate pattern defects on surface of strip steel

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Embodiment Construction

[0030] The embodiment of the present application provides a method for controlling the orange-peel reticulate defect on the surface of the strip steel, which solves the problem in the prior art that the edge of the work roll of the temper mill is excessively worn, resulting in an orange-peel reticulate defect on the surface of the strip steel. Technical problems have been solved, and the technical effect of effectively controlling the orange-peel-like texture defects on the surface of the strip steel has been achieved.

[0031] In order to solve the above technical problems, the general idea of ​​the technical solution provided by the embodiment of the present application is as follows:

[0032] A method for controlling the orange-peel-like texture defect on the surface of strip steel, characterized in that it comprises the following steps:

[0033] Adopt SGB roll shape curve on the backup roll of the hot rolling tempering mill;

[0034] SGW roll shape curve is adopted on the...

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Abstract

The invention belongs to the technical field of hot rolling, and discloses a method for controlling orange peel reticulate pattern defects on the surface of strip steel. The method is characterized by comprising the following steps: adopting an SGB roll profile curve on a supporting roller of a hot rolling temper mill; adopting an SGW roll profile curve on a working roller. The process parameters of the temper mill are set as the rolling force of 200-250 tons, the unwinding tension of 9-12 tons, and the winding tension of 20-23 tons, the rolling reduction of straightening rollers is used in a straightening machine group, and a roller shifting strategy with constant frequency, variable step sizes and variable stroke is adopted. According to the method, through the application of the SGB and SGW roll profile curves, a specific smoothing process and the roller shifting strategy, local wear of working rollers is greatly reduced, and orange peel reticulate pattern defects on the surface of the strip steel are effectively overcome.

Description

technical field [0001] The invention relates to the technical field of hot rolling, in particular to a method for controlling the orange-peel reticulate defect on the surface of a steel strip. Background technique [0002] Thin-gauge hot-rolled products can partly replace cold-rolled products, realizing "replacing cold with heat", which is represented by hot-rolled container plates and pickling plates with a thickness of 1.5mm to 3mm. Such products generally require a leveling process to improve the shape quality of the strip, that is, to eliminate wave-shaped defects. Due to the high requirements not only on the shape quality of the plate, but also on the surface defects, this puts forward higher requirements for the hot-rolled tempering technology. [0003] The hot-rolled skinning process is a typical "dry" skinning. The surface of the strip is covered with obvious scale, and the skinning is completely carried out under the condition of no lubrication and cooling, resulti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21B37/30B21D1/02
CPCB21B37/30B21B2201/06B21B2263/04B21B2267/18
Inventor 张喜榜王凤琴李飞王凤美李彬江潇李树森董立杰刘子英
Owner SHOUGANG CORPORATION
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