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Method for changing the rolls on a rolling mill

A technology of rolls and rolling mills, applied in the field of rolling mill installations

Active Publication Date: 2019-01-04
FIVES DMS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0031] According to the applicant's observation, the device of the document US2002 / 0078728 of the prior art still has some disadvantages, especially the need to set support rails in the frame of the rolling mill so as to support the roller 53 at different heights, which is called " Upper and lower rails 15", which can be driven in an upward or downward direction by using cylinders 16

Method used

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  • Method for changing the rolls on a rolling mill
  • Method for changing the rolls on a rolling mill
  • Method for changing the rolls on a rolling mill

Examples

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Embodiment Construction

[0140] Thus, the present invention relates to a rolling mill 1 for rolling metal strip, in particular of the four-high type, comprising a roll stand 2 comprising two pairs of columns between the two ends of the stand A set of superimposed rolls is provided, said rolls having substantially parallel axes, comprising two work rolls 3, 4, a lower work roll and an upper work roll, defining the starting point through which the strip passes, and two support Rolls 5, 6, respectively a lower back-up roll and an upper back-up roll, are intended to bear respectively against a work roll on the side opposite to the side passing through the nip.

[0141] Each work roll or backup roll has two ends, commonly called roll necks, mounted so that they rotate on bearings supported by chocks 30, 40, 50, 60, respectively.

[0142] The rolling mill further comprises guides between the chocks 30 , 40 , 50 , 60 of the rolls along the clamping plane and the roll stands 2 . Said guiding means may compri...

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Abstract

The invention relates to a method for changing the rolls on a rolling mill for rolling a metal strip, which is carried out in an installation having a rolling mill of the Quarto stand type, comprisingtwo working rolls (3, 4), one lower and one upper, defining the nip through which the sheet passes, and two support rolls (5, 6), respectively one lower and one upper, intended to bear respectively against the working rolls on the opposite side to the side of the nip. According to the invention, the installation comprises a system for extracting the working rolls and the support rolls provided, on the drive side of the said rolling mill and comprising: an actuator (70) configured to push the rolls out of the roll stand of the rolling mill when the rolls are being extracted, a coupling head (8), secured to the said actuator (70), situated in a position of opening of the roll stand (2), comprising first coupling means configured to drive the chock (40) or the end of the lower working roll(4), on the rolling-mill drive side, second coupling means configured to drive the chock of the lower support roll (6), on the rolling-mill drive side. Advantageously, the first coupling means and thesecond coupling means of the said extraction system are configured in such a way as to allow successive extractions of the working rolls (3, 4) and then of the support rolls (5, 6) from the roll stand (2) using the one same actuator of the extraction system. The invention also relates to a rolling mill installation for carrying out the method of the invention.

Description

technical field [0001] The content of priority application FR1653411 dated April 18, 2016 is incorporated herein by reference. [0002] The invention relates to a method of changing rolls on a rolling mill for rolling a metal strip, and furthermore to a rolling mill arrangement comprising a rolling mill and a roll changing system which advantageously makes it possible to carry out the method according to the invention. [0003] The field of the invention is that of four-high stand rolling mills for specific applications, for example, in annealing lines, or galvanizing lines, or off-line reversing or irreversible rolling mills for rolling metal strip. The rolling mill according to the invention has a specific use, in particular for performing temper rolling operations after the strip has been annealed, generally in order to eliminate the yield point of the metal strip in order to achieve the roughness of the strip and / or to improve its brightness and / or flatness. Backgroun...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21B31/10
CPCB21B31/10B21B31/106B21B2013/025B21B2203/32B21B31/103
Inventor 伯诺伊特·布罗克斯埃默里克·代拉诺艾
Owner FIVES DMS