| 摘要 |
<p>PURPOSE:To enable avoiding an increase in the rolling load of a next stand, caused by the change of the roll gap of a previous stand by making the change quantity of the roll gap of a stand on the downstream side larger than that on the upstream side. CONSTITUTION:Before the tail end of a rolled stock 1, is passed through the fifth stand F5, the sixth stand F6, and the final seventh stand F7 of a tandem mill, the roll gaps of these stands F5, F6, and F7, are successively opened at a high speed and by specified timing. And, the change quantities DELTAS5 to DELTAS7 of the roll gaps of the stands on the downstream side, are made larger than those on the upstream side. Consequently, a off-gage length is shortened, also, the loads of the stands on the downstream side, can be decreased.</p> |
