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Strip steel straightening method and device

A strip and straightening technology, applied in the field of strip straightening methods and devices, can solve the problems of poor strip flatness, uneven distribution of residual stress, and reduced quality grades, and achieves elimination of residual stress and good performance. effect, the effect of improving the shape of the plate

Active Publication Date: 2021-04-06
WISDRI ENG & RES INC LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a strip straightening method and its device in order to overcome the problems of poor flatness of the existing strip steel and uneven distribution of residual stress resulting in a decline in the quality level

Method used

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  • Strip steel straightening method and device

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Effect test

Embodiment 1

[0042] A strip straightening method, comprising: sequentially applying a first tension, a second tension and a third tension to the strip along the moving direction of the strip, wherein the direction of the first tension is opposite to that of the third tension, And the absolute value of the third tension is greater than the first tension, and the second tension is in the same direction as the third tension;

[0043] a set of stretching rolls is disposed between the point of application of the first tension and the second tension, the set of stretching rolls causes the strip to be stretched;

[0044] A flattening roller set is arranged on the stretching roll set along the moving direction of the strip, and the flattening roller set provides the second tension, so that the strip is flattened;

[0045] A group of homogenizing rollers is arranged between the action points of the second tension and the third tension, and the group of homogenizing rollers includes a first homogeni...

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Abstract

The invention relates to a strip steel straightening method and device. The method comprises the steps: sequentially applying first tension, second tension and third tension to strip steel in the movement direction of the strip steel, and arranging extension roller sets between the action points of the first tension and the second tension; and enabling a flattening roller set to be arranged on the extension roller sets in the moving direction of the strip steel, and enabling a homogenizing roller set to be arranged between the action points of the second tension and the third tension and comprise a first homogenizing roller and a second homogenizing roller which are arranged in a relatively staggered mode, wherein the strip steel penetrates through the homogenizing roller set to form a plurality of continuous arcs with opposite bending directions, and residual stress on the strip steel is homogenized. By means of the method, wave-shaped influence caused by incoming material machining can be eliminated, transverse bending and longitudinal bending generated by uneven extension are eliminated, the residual stress is homogenized, and therefore, the high-strength strip steel is obtained, and the method is particularly suitable for machining production of ultrahigh-strength strip steel.

Description

technical field [0001] The invention relates to the field of cold and hot-rolled steel strip production, in particular to a strip steel straightening method and a device thereof. Background technique [0002] Strip steel is a narrow and long 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. Strip steel, also known as steel strip, is within 1300mm in width, and the length is slightly different according to the size of each roll. Ultra-high-strength steel strip refers to the strip steel with a yield strength greater than 1000Mpa. In the production process of this kind of strip steel, the incoming material (ie raw material) has a poor shape, has a large wave shape, and has high strength at the same time. It is difficult to pass the conventional The pressing method makes it flat, resulting in local bending of the strip and poor flatness. [0003] In the p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21D1/05
CPCB21D1/05
Inventor 杨柳
Owner WISDRI ENG & RES INC LTD
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