| 摘要 |
<p>PURPOSE:To decrease the mill hysteresis or the like of work roll that gives the adverse effect to automatic thickness control as much as possible. CONSTITUTION:A pair of work rolls 2, 3 opposing each other is provided, to roll a rolled stock 10. A rolling load between the rolled stock 10 and the work roll 2 is received with intermediate back-up rolls 4a-4d and other divided back-up rolls which are provided in the oblique positions before and behind the work roll 2. A hydraulic cylinder 15 and load detector 17 are respectively provided on each divided back-up roll and rolling load distribution is variably controlled. Rollers 12 for receiving thrust are provided on chocks 11 with which the end parts of shafts of the work rolls 2, 3 are supported. In this way, friction force, between keeper plates 13 which are provided on the housing 1 and the chocks 11 is reduced and mill hysteresis in automatic thickness control or the like can be decreased as small as possible.</p> |
