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Higher degree roller ablet to control edge shape of steel band

A technology for controlling strips and steel edges, applied in the direction of rolls, metal rolling, manufacturing tools, etc., can solve the problems that cannot be formed, affect the wear of work rolls, edge thinning, and sudden contact pressure changes, and achieve low cost and simple transformation Convenience, small side thinning effect

Inactive Publication Date: 2007-10-03
BAOSHAN IRON & STEEL CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since one side of the working roll of the K-WRS mill is ground into a tapered shape, the roll curve is composed of two straight lines, so that the roll curve has an inflection point and cannot form a smooth curve.
In this way, the contact pressure between the work roll and the support roll at the inflection point changes abruptly, which directly affects the wear of the work roll and the edge thinning (edge ​​drop) control ability

Method used

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  • Higher degree roller ablet to control edge shape of steel band
  • Higher degree roller ablet to control edge shape of steel band
  • Higher degree roller ablet to control edge shape of steel band

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Please refer to Fig. 6, shown in Fig. 7, in this embodiment, the high-order shape roll (BEC) 10 that controls strip edge plate shape comprises work roll 11, back-up roll 12, and described work roll 11 is positioned at and described On the upper and lower sides of the rolled plate and strip 13 , the support rolls 12 are located on both sides of the work roll 11 for supporting the work roll 11 .

[0039] The shape of the roll end of the work roll 11 is a circular arc shape that compensates for the thinning of the rolled plate and strip 13 sides, and the roll shape curve is a smooth curve connected by two sections, one section of arc curve 111, and the other section is a straight line 112. At the intersection point O of the arc curve and the straight line, the derivative of the arc curve is zero.

[0040] Described work roll 11 comprises at least two (two groups), and the shape of a roll end of each (group) work roll 11 is the circular arc shape that compensates rolled pla...

Embodiment 2

[0048] Please also refer to Fig. 6 and Fig. 7, in this embodiment, the high-order shape roll 10 for controlling the shape of the edge of the strip includes a work roll 11 and a back-up roll 12, and the work roll 11 is located at the same position as the rolled The upper and lower sides of the plate and strip 13, the support rolls 12 are located on both sides of the work roll 11 for supporting the work roll 11.

[0049] The shape of the roll end of the work roll 11 is a circular arc shape that compensates for the thinning of the rolled plate and strip 13 sides, and the roll shape curve is a smooth curve connected by two sections, one section of arc curve 111, and the other section is a straight line 112. At the intersection point O of the arc curve and the straight line, the derivative of the arc curve is zero.

[0050]Described work roll 11 comprises at least two (two groups), and the shape of a roll end of each (group) work roll 11 is the circular arc shape that compensates r...

Embodiment 3

[0052] Embodiments 3 and 4 are basically the same as the first two embodiments, and will not be described one by one here. The difference is that the roll shape curve of the work roll in embodiment 3 is a y=1-cos ax function curve; while embodiment 4 The roll shape curve of the work roll is y = tan ax function curve.

[0053] Of course, the roll shape curve of the work roll of the present invention may also be other roll shape curves obtained by finite element simulation design and experiment correction.

[0054] Work roll of the present invention compares with the work roll in the traditional roll, and its advantage can find out from following analysis:

[0055] The roll shape curve of the work roll is a smooth curve. This is because the derivative of the arc curve at the intersection point of the arc and the straight line is zero, and there is no inflection point in the curve. Edge drop control of steel, while there is an inflection point in the roll shape curve of K-WRS, w...

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Abstract

A high-order shaped rolling roller for controlling the edge shape of band steel features that its end part has an arc shape for compensating the thinned edge of band steel, and its profile curve is a smooth one composed of an arc curve and a straight line for decreasing the elastic deformation of rolling roller and the abrasion between rolling roller and the edge of band (or plate) steel.

Description

technical field [0001] The invention relates to a roll for rolling plates and strips in the metallurgical cold rolling process, more specifically a high-order shape roll for controlling the edge shape of the strip. Background technique [0002] As one of the most important products of the iron and steel industry, plate and strip steel play a very important role in the development of the national economy. It is widely used in industry, agriculture, national defense and daily life. With the rapid development of modern industry and science and technology, the quality requirements for plates and strips are becoming more and more stringent. [0003] In the high-precision rolling of plate and strip steel, the shape of the strip is the standard for measuring the quality of the strip steel. There are five description indicators: crown, wedge, edge thinning (edge ​​drop), local high point, and flatness. Among them, edge thinning (edge ​​drop) is one of the criteria to measure the s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21B27/00B21B27/02B21B1/22
Inventor 朱简如张清东吴平白剑王康健陈云鹏李山青陈继东厉以沪
Owner BAOSHAN IRON & STEEL CO LTD
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