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Asymmetric self-compensating rolling working roll applicable to short-stroke roll shifting and implementation method thereof

A work roll, self-compensating technology, used in metal rolling, manufacturing tools, metal rolling, etc., can solve the problems of uneven wear, edge drop and crown shape that cannot be achieved in short strokes

Active Publication Date: 2021-04-02
UNIV OF SCI & TECH BEIJING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The invention provides a work roll suitable for short-stroke roll shifting asymmetric self-compensation rolling and its realization method to solve the problems of uneven wear, edge drop and crown profile that the existing work rolls cannot realize short-stroke roll shifting control technical issues

Method used

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  • Asymmetric self-compensating rolling working roll applicable to short-stroke roll shifting and implementation method thereof
  • Asymmetric self-compensating rolling working roll applicable to short-stroke roll shifting and implementation method thereof
  • Asymmetric self-compensating rolling working roll applicable to short-stroke roll shifting and implementation method thereof

Examples

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Effect test

no. 1 example

[0054] This embodiment provides an ASR-S (Asymmetry Self-compensating Rolling for Short Stroke System) work roll suitable for uneven wear, edge drop and crown profile control, which is suitable for short stroke shifting. This embodiment uses an asymmetric Self-compensating work rolls, according to the wear pattern of the rolls in the rolling process, through the specially designed roll shape curve of the work rolls, coupled with a specific roll shifting method, one side of the groove box worn by the grooved work rolls is opened to make the wear shape From "U" shape to "L" shape, the rolled piece is always rolled in the relatively flat area of ​​the roll shape, and the asymmetry of the roll shape and roll shifting is used to effectively change the wear of the work roll and improve the roll gap. asymmetry. The roll shape of the work roll is represented by a piecewise function, which includes a crown adjustment section, a wear control section, and a structural process section con...

no. 2 example

[0068] This embodiment provides a method for realizing asymmetric self-compensating rolling work rolls suitable for short-stroke roll shifting. The work rolls include a crown adjustment section, a wear control section, and a structural process section connected in sequence; the method includes:

[0069] S1, determine the strip width range, take the maximum width strip as the reference strip, and record its width as B 0 ;

[0070] S2, determine the roll shifting strategy, the roll shifting strategy includes the roll shifting of hot roll material and the roll shifting of silicon steel;

[0071] If the width of the hot roll material is less than or equal to the width of the silicon steel -200mm, the roll shifting can be carried out according to the periodic normal roll shifting strategy; -100mm~-30mm, after two pieces are rolled, the rolls are shifted once according to the two hot roll materials, each time the rolls are shifted 1mm~5mm, and the rolls are shifted in the direction...

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Abstract

The invention discloses an asymmetric self-compensating rolling working roll applicable to short-stroke roll shifting and an implementation method thereof. The working roll comprises a convexity adjusting section, an abrasion control section and a structural process section which are connected in sequence, wherein all roll shape sections are respectively positioned at the transmission side and theoperation side of a rolling mill; an upper working roll and a lower working roll respectively shift towards the middle of the rolling mill every time when a roll of strip steel is rolled; and a unidirectional aperiodic roll shifting strategy is adopted. The roll shape and the roll shifting strategy of the working roll are designed according to the width of the rolled strip steel; the asymmetry ofthe roll shape and the roll shifting can be utilized; the abrasion form of the working roll is effectively changed; multiple control on uneven deformation convexity, edge drop and uneven abrasion isachieved; the shape of a bearing roll gap is improved; the effective regulation and control on the roll bending force is guaranteed; the rolling unit is expanded; and the strip steel plate shape control capability is improved. The requirement for free regulation rolling plate shape control under the conditions of wide strip steel hot rolling short-stroke roll shifting machine type and rolling unitexpansion can be met.

Description

technical field [0001] The invention relates to the technical field of mechanical rolling mills, in particular to an asymmetrical self-compensating rolling work roll suitable for short-stroke roll shifting and a method for realizing the same. Background technique [0002] Shape is one of the main quality indicators in the rolling process of hot-rolled strips, and the essence of shape control is to control the shape of the load-bearing roll gap. Through the specially designed roll shape, the crown of the roll gap can be changed with the change of the roll shifting. This technology is called the variable crown shape control technology. At present, the variable crown shape control technology is widely used in the field of shape control, including CVC roll shape and k-WRS models. [0003] The most prominent feature of the variable crown shape control technology is that it can continuously change the crown of the roll gap, and a set of rolls can meet the crown requirements of di...

Claims

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Application Information

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IPC IPC(8): B21B37/30B21B27/02
CPCB21B37/30B21B27/021
Inventor 曹建国王雷雷宋纯宁李艳琳赵秋芳孔宁曹媛吕昌帅
Owner UNIV OF SCI & TECH BEIJING
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