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Strip-rolling variable contact support roller and processing method thereof

A technology of supporting rolls and variable contact, applied in metal rolling, metal rolling, manufacturing tools, etc., can solve problems such as inability to adjust roll shape

Inactive Publication Date: 2010-06-30
UNIV OF SCI & TECH BEIJING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when l' and h' are fixed for the roll shape, the radius r' has been determined, and the chamfering form has also been determined, and the roll shape cannot be adjusted according to the contact between the rolls.

Method used

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  • Strip-rolling variable contact support roller and processing method thereof
  • Strip-rolling variable contact support roller and processing method thereof
  • Strip-rolling variable contact support roller and processing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0105] The roll shape curve is designed with the coefficients selected in Table 1, such as Figure 7 As shown in the middle roll shape 1, it can be seen that when all roll shape angles are taken as 0, the roll shape is a conventional flat roll.

[0106] Table 1

[0107] coefficient

Embodiment approach 2

[0109] The roll shape curve is designed with the coefficients selected in Table 2 as Figure 7 As shown in the middle roll shape 2, it can be seen that the roll shape has obvious variable contact characteristics. Since the selection of the shape angle is small and the roll shape adjustment coefficient is selected to the maximum value, the depth of the variable contact section and the chamfer section of the roll shape curve are uniform. Larger, the maximum roll diameter difference of the roll shape has reached more than 2.5mm, and this roll shape is generally suitable for occasions with large rolling forces.

[0110] Table 2

[0111] coefficient

Embodiment approach 3

[0113] The roll shape curve is designed with the coefficients selected in Table 3 as Figure 7 As shown in the middle roll shape 3, it can be seen that the roll shape has variable contact characteristics, and the maximum roll diameter difference is about 1.4mm, which is generally suitable for the upstream stand of the hot rolling mill.

[0114] table 3

[0115] coefficient

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Abstract

The invention discloses a strip-rolling variable contact support roller and a processing method thereof. Roll forming curves are superposed by using a five-section sine function, so the contact line length between the support roller and a working roller is close to the width of the rolled strip steel, the harmful contact area during the rolling process is decreased, the regulating and controlling function of the roller force is promoted, the roll-gap crosswise rigidity is increased, the contact pressure between rollers is uniformed, and the accident that the edge of the roller falls off is decreased or completely eradicated. During the grinding process, a superposed roller forming of a variable contact section and a chamfer section at two sides of the roller is firstly grinded and then the whole roller is grinded so as to promote the processing efficiency and decrease the grinding wheel consumption. The support roller of the invention is convenient to design and process and is easy to realize the industrial application.

Description

technical field [0001] The invention relates to a back-up roll shape and a processing method thereof, which are used for strip shape control and can reduce roll consumption in strip steel production, and belong to the roll shape design in the field of strip rolling. Background technique [0002] In the field of strip production, the initial roll shape of the backing roll is a conventional crown roll or a flat roll. Since the conventional roll shape does not have the ability to control the shape of the strip and is prone to peeling accidents of the backing roll, it has gradually been changed to a contact backing roll shape. And the edge chamfering is replaced by the roll shape of the supporting roll. [0003] (1) Variable contact support roll shape [0004] In order to solve the problem of uneven wear of the backing rolls and improve the shape control ability of the backing rolls, Patent 1 (ZL91229974.6, 1993.12.22), Document 1 (Chen Xianlin, YangQuan, Zhang Qingdong, et al....

Claims

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Application Information

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IPC IPC(8): B21B29/00
Inventor 李洪波张杰曹建国杨光辉
Owner UNIV OF SCI & TECH BEIJING
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