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Strip steel surface appearance control method

A technology of surface morphology and control method, applied in the field of steel rolling, can solve problems such as poor surface compactness of strip steel

Active Publication Date: 2019-09-27
SHOUGANG CORPORATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The embodiment of the present application provides a strip surface topography control method, which solves the problem of the presence of rolling force lines on the strip surface after the strip is leveled by the wet leveling process of the double-stand skin passer in the related art, and the strip surface The problem of poor density

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Examples

Experimental program
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Effect test

Embodiment 1

[0046] In this embodiment, a method for controlling the surface morphology of strip steel is applied to the wet leveling process of a double-frame temper machine, and the method includes:

[0047]According to preset conditions, the target strip steel is controlled to pass through the first work roll on the first frame of the double-frame tempering machine and the second frame of the double-frame tempering machine successively at a speed of 300m / min Continuous rolling of the second work roll; where,

[0048] The roughness of the first work roll is 2.0um, and the roughness of the second work roll is 1.2um;

[0049] The entry tension of the first work roll is less than the tension between the first work roll and the second work roll, the exit tension of the second work roll is less than the entry tension of the first work roll; and,

[0050] The entrance tension of the first work roll is 12kN, the tension between the first work roll and the second work roll is 15kN, and the exit...

Embodiment 2

[0054] In this embodiment, a method for controlling the surface morphology of strip steel is applied to the wet leveling process of a double-frame temper machine, and the method includes:

[0055] According to preset conditions, the target strip is controlled to pass through the first work roll on the first frame of the double-frame tempering machine and the second frame of the double-frame tempering machine successively at a speed of 600m / min. Continuous rolling of the second work roll; where,

[0056] The roughness of the first work roll is 4.0um, and the roughness of the second work roll is 3.0um;

[0057] The entrance tension of the first work roll is 30kN, the tension between the first work roll and the second work roll is 40kN, and the exit tension of the second work roll is 25kN.

[0058] Further, in order to further improve the quality of the surface topography, the first elongation of the target steel strip after being rolled by the first stand machine is 0.7 of the ...

Embodiment 3

[0061] In this embodiment, a method for controlling the surface morphology of strip steel is applied to the wet-leveling process of a double-frame tempering machine. The method includes:

[0062] According to preset conditions, the target strip steel is controlled to pass through the first work roll on the first frame of the double-frame tempering machine and the second frame of the double-frame tempering machine successively at a speed of 500m / min. Continuous rolling of the second work roll; where,

[0063] The roughness of the first work roll is 3.5um, and the roughness of the second work roll is 1.2um;

[0064] The entrance tension of the first work roll is 27kN, the tension between the first work roll and the second work roll is 38kN, and the exit tension of the second work roll is 25kN.

[0065] Further, in order to further improve the quality of the surface topography, the first elongation of the target steel strip after being rolled by the first stand machine is 0.57 o...

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Abstract

The invention discloses a strip steel surface appearance control method, and relates to the technical field of steel rolling, and is applied to a wet leveling process of a double-rack temper mill. The method comprises the following step that target strip steel is controlled to sequentially pass through a first working roller on a first rack of the double-rack temper mill and a second working roller on a second rack of the double-rack temper mill at the speed of 300-600 m / min according to a preset condition for continuous rolling, wherein the roughness of the first working roller is 2.0-4.0 microns, the roughness of the second working roller is 1.0-3.0 microns, and the roughness of the first working roller is larger than the roughness of the second working roller. The strip steel surface appearance control method solves the problems that in the prior art, in the case of strip steel which is rolled by using a double-rack temper mill wet leveling process, rolling force lines exist on the surface of the strip steel after the strip steel is leveled, and the compactness of the surface of the strip steel is poor.

Description

technical field [0001] The invention relates to the technical field of steel rolling, in particular to a method for controlling the surface morphology of strip steel. Background technique [0002] Strip steel is a kind of steel plate produced by various steel rolling enterprises to meet the needs of industrial production of various metal or mechanical products in different industrial sectors. Among them, battery shell steel has strict requirements on surface quality and deep drawing performance. The thickness of conventional battery shell steel is 0.25-0.5mm, and the requirements on the upper and lower surfaces of strip steel are very strict. [0003] In the prior art, there is a single-frame leveling mode for production to achieve strip surface quality control and meet the purpose of battery shell steel surface quality requirements, but its production efficiency is low; there is also a double-frame leveling machine wet leveling process. production, but there are rolling fo...

Claims

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Application Information

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IPC IPC(8): B21B37/28
CPCB21B37/28
Inventor 王永强于孟文杰王凤琴李金龙李洋龙李宫胤林海海陈飞昝现亮令狐克志常安王慧
Owner SHOUGANG CORPORATION
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