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Apparatus and method for thermal controlling roll shape of roll in rolling mill

A roll shape and heat control technology, applied in the field of roll shape

Inactive Publication Date: 2006-03-29
VAI CLECIM (FR)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, as a result of this improvement, the remaining defects, which were not previously taken into account, clearly appear on the edges of the rolled strip, especially on the edges of the thinnest strips.

Method used

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  • Apparatus and method for thermal controlling roll shape of roll in rolling mill
  • Apparatus and method for thermal controlling roll shape of roll in rolling mill
  • Apparatus and method for thermal controlling roll shape of roll in rolling mill

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Experimental program
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Embodiment Construction

[0048] figure 1 , 2 The whole four-high rolling mill is schematically shown in cross-sectional view and front view, which includes four stacked rolls, namely two work rolls 1, 1' and two back-up rolls 10, 10', which are installed on the machine Inside the frame 11, said frame is equipped with means 12 for exerting a clamping force on the axial end of one supporting roller 10, while the other supporting roller 10' bears on the cam. Therefore, it is possible to move along a horizontal running plane P between the work rolls 1, 1' 1 Rolled products M. Usually, the product M is represented by the vertical symmetry plane P of the rolling mill 2 Alignment.

[0049] The product M to be rolled consists of a metal strip whose two sides 13a, 13b are separated by a width L which may be at a maximum width L in relation to the type of product to be rolled. 1 and minimum width L 0 change between. Usually, the width L of the product is less than the length of the work rolls, and only a...

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PUM

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Abstract

The invention relates to a method for thermal control of the profile of a roll in a mill by spraying, over a cooled zone(4) of the roll(1), a series of jets of fluid(J), each forming an oblong impact surface(S). According to the invention, the distance(a) between the middle axes of the impact surfaces(S) is caused to vary in relation to the position of the said impact surfaces over the length of the cooled zone(4) so that the said zone comprises a central zone(41, 43) with a substantially constant pitch and whereas two transition zones(44) extend on either side of the central zone at least up to two edges(13) of the band(M) and in which the spacing between the middle axes of the impact surfaces(S) is reduced with respect to the constant pitch(a) of the central zone(41, 43).

Description

technical field [0001] The invention relates to a method and a device for thermally controlling the profile of rolls in a rolling mill. Background technique [0002] Rolling plants for metal strip generally comprise one or several rolling stands each having at least two work rolls and equipped with means for controlling the passage of the strip to be rolled between said work rolls. [0003] Typically, each mill stand consists of two support columns spaced apart from each other and connected by a crossbeam, between which is mounted a set of axially parallel superimposed rolls positioned approximately perpendicular to the direction of product feed. on the same clamping plane. [0004] Different types of rolling mills can be manufactured. Usually, in a rolling mill, the product to be rolled passes between two work rolls which delineate the rolling plane; Pressing against at least two backup rolls, between which a rolling force is applied. [0005] A so-called "four-high rol...

Claims

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Application Information

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IPC IPC(8): B21B37/32B21B27/06B21B31/16B21B27/10B21B45/02
CPCB21B2027/103B21B45/0218B21B27/10B21B45/0233
Inventor 安德烈·拉韦内特泰里·马拉德
Owner VAI CLECIM (FR)