| 摘要 |
<p>PURPOSE:To stably manufacture a plate material having the aimed width at a low cost by suitabilizing a plate crown changing rate at each rolling stand in a continuous rolling mill. CONSTITUTION:The aimed plate width adjusting rate DELTAWd of the plate material after the continuous rolling is calculated, and at the time of dividing this into the plate width adjusting rate DELTAWai at each stand, the plate width adjusting rate DELTAWai is set up so that the crown changing rate DELTACri calculated from a relation of the plate width adjusting rate DELTAWai, the crown changing rate DELTAChi at the outlet side of each stand and the plate width changing rate DELTAWi becomes in the permissible range of the crown changing rate calculated from the rolling conditions, and according to the calculated crown changing rate, a crown control end in the rolling stand is operated.</p> |
