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91. 发明专利

JPS6336908A CROSS ROLLING MILL 失效
公开(公告)号：JPS6336908A
公开(公告)日：1988-02-17
申请号：JP17998486
申请日：1986-08-01
申请人： HITACHI LTD
发明人： AWATSUHARA HIROSHI , HIRAMA YUKIO , SATO KOJI , NARITA KENJIRO
IPC分类号： B21B13/06 , B21B13/12
摘要： PURPOSE:To increase the buckling deformation generating limit of a sheet material and to improve the width adjustment capacity of a rolling mill by disposing a pair of upper and lower horizontal rolls for restraining the transverse cross section of the sheet material to at least either on the sheet material inlet or outlet side of vertical rolls for width adjustment in proximity thereto. CONSTITUTION:A pair of the upper and lower horizontal rolls 3 are disposed to a common housing 10 as near as possible the sheet material inlet or outlet side of a pair of the vertical rolls 2 for width adjustment to make the width adjustment of the sheet material 1. The gap between a pair of the rolls is so adjustable that the cross section of the rolled stock is held always restrained in a fixed state according to the sheet thickness of the rolled stock 1. The barrel length of the horizontal rolls 3 is determined at the size at which the rolled stock of the largest width is restrained over the entire width thereof so that the sheet materials of various widths can be processed with the same rolls 3. The buckling generating limit of the sheet material 1 is thereby increased and the cross rolling mill having the large width adjustment capacity is obtd.

92. 发明专利

JPS61212416A METHOD FOR ADJUSTING WEAR-PROFILE OF WORK ROLL 失效
公开(公告)号：JPS61212416A
公开(公告)日：1986-09-20
申请号：JP5520885
申请日：1985-03-19
申请人： NISSHIN STEEL CO LTD , HITACHI LTD
发明人： YAMAZAKI MASAKUNI , ISHIKAWA SHUICHI , TAKAJI KATSUHIKO , AWATSUHARA HIROSHI , NARITA KENJIRO , HASHIMOTO SUNAO , KAWASE HIROSHI
IPC分类号： B21B1/22 , B21B37/00 , B21B37/42
摘要： PURPOSE:To smooth a wear profile of work roll and to improve a roll basic unit by moving a work roll in its axial direction so as to provide a wear profile capable of offsetting a thermal expansion profile produced in the work roll, to the work roll. CONSTITUTION:In a four-high mill provided with work rolls 6, 6' and backup rolls 7, 7', a pattern, for moving the work rolls 6, 6' in the axial directions so that the wear profiles capable of offsettig the thermal expansion profiles of the wrok roll 6, 6' which are expressed by a quartic function are provided to these rolls, with the aid of a computer 1 by using the rolling information about a material of rolling stock 8, a rolling temperature and a pass schedule, etc. is decided. With the advance of rolling, work roll positions S are outputted to computing elements 2, 2' from the computer 1 based on said pattern, to compare the detected values SU, SL of work-roll position detected values 3, 3' with the values S in order to obtain the deviations DELTASU, DELTASL between them. Based on said deviations, work-roll position controlling devices 4, 4' correct the positions of work rolls 6, 6' through work-roll moving devices 5, 5'.

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