Composite supporting roll for hot-continuous rolling wide-strip-steel four-roll mill

A composite support, four-high rolling mill technology, applied in metal rolling, metal rolling, metal processing equipment, etc., can solve the problems of roll peeling and uneven wear of rolls, reduce roll consumption, eliminate stress concentration between rolls, improve The effect of shape quality

Inactive Publication Date: 2012-10-10
SHOUGANG CORPORATION
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In order to solve the above problems, the present invention proposes a method to solve the problems of uneven roll wear and roll spalling caused by edge stress concentration of back-up rolls and CVC work rolls in the hot continuous rolling mill of wide-band steel, thereby reducing roll consumption and improving Composite roll shape of back-up rolls in four-high mills for hot continuous rolling of wide-band steel with profile control accuracy

Method used

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  • Composite supporting roll for hot-continuous rolling wide-strip-steel four-roll mill
  • Composite supporting roll for hot-continuous rolling wide-strip-steel four-roll mill
  • Composite supporting roll for hot-continuous rolling wide-strip-steel four-roll mill

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Embodiment Construction

[0029] In order to deeply understand the present invention, the present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0030] The curve description equation of the roll shape of the composite back-up roll for the hot continuous rolling wide strip four-roll mill provided by the present invention is as follows:

[0031] R(x)=b 6 x 6 +b 5 x 5 +b 4 x 4 +b 3 x 3 +b 2 x 2 +b 1 x+b 0

[0032] in,

[0033] 0≤x≤2250;

[0034] -4.5×10 -19 ≤b 6 ≤-2.7×10 -19 ,

[0035] 1.8×10 -15 ≤b 5 ≤3.0×10 -15 ,

[0036] -8.2×10 -12 ≤b 4 ≤-5.0×10 -12 ,

[0037] 7.7×10 -9 ≤b 3 ≤1.3×10 -8 ,

[0038] -1.1×10 -5 ≤b 2 ≤-7.3×10 -6 ,

[0039] -4.5×10 -19 ≤b 1 ≤-2.7×10 -19 ,

[0040] -3.5×10 -10 ≤b 0 ≤-4.6×10 -10 ;

[0041] R(x)—work roll body radius difference, mm,

[0042] x—the axial coordinates of the roll body, the origin of the coordinates is on the roll operating side, mm,

[0043] b 6 , b ...

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Abstract

The invention discloses a composite supporting roll for a hot-continuous rolling wide-strip-steel four-roll mill, and belongs to the technical field of steel rolling. The roll-shaped curve description equation of the composite supporting roll is as follows: R(x)=b6x6+b5x5+b3x3+b2x2+b1x+b0. The composite supporting roll disclosed by the invention has the advantages that when being matched with a CVC roll-shaped working roll for use, the stress concentration among rolls can be eliminated, contact stress distribution among the rolls is improved, the problems of non-uniform wearing and peeling of the rolls due to stress concentration are solved, and further the quality of the plate shape is improved while reducing the roll consumption.

Description

technical field [0001] The invention relates to the technical field of steel rolling, in particular to a composite support roll used in a four-roll mill for hot continuous rolling of wide strip steel. Background technique [0002] Strip steel is a steel plate that can be widely used in industry, agriculture, national defense and other fields, and plays an important role in the development of the national economy. An important link in the production process of strip steel includes processing billets into Strip coil. [0003] With the development of science and technology, especially the rapid development of modern industrial sectors such as automobiles, cans and household appliances, not only the demand for strip steel has increased sharply, but also the quality, dimensional accuracy, surface quality and performance have been put forward. strict requirements. From the aspect of strip shape control, the main research focus is on the structure and roll shape of the back-up ro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21B29/00
Inventor 王晓东李飞余威李明李本海张宝辉王磊于洪喜江潇
Owner SHOUGANG CORPORATION
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