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Roll caliber for rolling special-shaped wide steel strip

A roll and pass technology, applied in the direction of roll, metal rolling, metal rolling, etc., can solve the problems of uneven pressure distribution, inappropriate size, deviation, etc., to achieve satisfactory size and performance, no surface defects, Reasonable effect of metal flow

Inactive Publication Date: 2008-12-03
KUNMING IRON & STEEL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in steel strip rolling, pass rolling is rarely used, mainly because the size of the upper and lower rolls is not suitable, the pressure distribution is uneven, etc., after the steel strip is rolled, deviation occurs or serious "bucket" or " Head tilting phenomenon

Method used

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  • Roll caliber for rolling special-shaped wide steel strip

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] A roll pass used for rolling special-shaped wide steel strips is located between the upper and lower rolls of the last stand of the steel strip rolling mill. The chamfer 1 on the upper side of the boss 3 is a circular arc with a radius of 1 mm, and the chamfer 2 on the lower side of the boss 3 is a circular arc with a radius of 1 mm. The angle β between the side of the boss 3 and the vertical line 4 of the rolling centerline 4 is 30°, the height of the boss is h=2mm, and the width S of the rectangle is 10mm. Such as figure 1 shown.

[0016] According to the needs of the product, select a partially filled pass for rolling during rolling. The rest achieve the thickness dimension by changing the rolling force and the size of the roll gap.

[0017] In the embodiment, a billet with a cross-sectional size of 175×1150 mm is rolled into a special-shaped wide steel strip, and a finished steel strip with a specification size of 10 mm×1170 mm. According to the test of this emb...

Embodiment 2

[0019] A roll pass used for rolling special-shaped wide steel strips is located between the upper and lower rolls of the last stand of the steel strip rolling mill. The chamfer 1 on the upper side of the boss 3 is an arc with a radius of 3 mm, and the chamfer 2 at the bottom of the boss 3 is an arc with a radius of 3 mm. The angle β between the side of the roll boss 3 and the vertical line 4 of the rolling center line 4 is 30°, the height of the boss is h=2mm, and the width S of the rectangle is 8mm. Such as figure 1 shown.

[0020] According to the needs of the product, select a partially filled pass for rolling during rolling. The rest achieve the thickness dimension by changing the rolling force and the size of the roll gap.

[0021] In the embodiment, a billet with a cross-sectional specification size of 175×1150 mm is rolled into a special-shaped wide steel strip, and a finished steel strip with a specification size of 8 mm×1170 mm. According to the test of this embod...

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Abstract

The invention relates to a roll pass used to roll a special wide steel band, which belongs to the steel rolling technical field. A roll comprises an upper roll and a lower roll of a final stand of a strip mill, the roll pass of the upper roll or the lower roll is of a long narrow rectangle, and lug bosses of the upper edge or the lower edge of the rectangle are arranged equidistantly. The special wide steel band which meets the requirement can be rolled through the roll pass, and the size and the service performance meet the requirement; and the steel band rolled by the roll pass has reasonable metal flow, good strip shape, and no surface defects.

Description

technical field [0001] The invention relates to a roll pass used for rolling a special-shaped wide steel strip, which belongs to the technical field of steel rolling. Background technique [0002] Rolling pieces with different cross-sectional shapes are generally rolled on the section steel mill at present, and the application of roll pass design is widely used in section steel rolling. The pass shape of the radial roll, the diameter in the bottom area of ​​the pass is increased, the contact length in the bottom of the pass can be shortened, so that a uniform contact surface can be obtained, and the contact peak in the edge area of ​​the roll pass can be significantly reduced top. However, in steel strip rolling, pass rolling is rarely used, mainly because the size of the upper and lower rolls is not suitable, the pressure distribution is uneven, etc., after the steel strip is rolled, deviation occurs or serious "bucket" or " Head tilting" phenomenon. Contents of the inv...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21B27/02
Inventor 赵培林刘莱萌周平刘洪成王洪彬贾增坡王晓运张桂南汤化胜孙丽荣霍孝新王腾飞王金秀
Owner KUNMING IRON & STEEL
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