| 摘要 |
PURPOSE:To smooth roll profiles and to improve rolling efficiency by stepwise shifting a pair of upper and lower work rolls in the axial parting direction thereof at every pass of a material to be rolled. CONSTITUTION:The upper and lower work rolls 2, 2' backed up by a pair of upper and lower back up rolls 1, 1' are axially shifted at every pass in the direction where the rolls part from each other. The wear loss of the rolls 2, 2' in this stage is max. at the down stream end in the shift direction and max. at the upper stream end and the wear of the rolls is axially dispersed between said ends. The profiles of the rolls 2, 2' are, therefore, smoothed and the schedule for rolling sequence can be made regardless of sheet widths. The profiles of the work rolls 2, 2' are smoothed and the rolling efficiency is improved by the above-mentioned method.
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