| 摘要 |
<p>PURPOSE:To stably manufacture a cold-rolled strip produce with high plate thickness accuracy on a delivery side of a final stand by correcting a plate thickness variation in intermediate stands generated by rotating a stock having severe hardness variation such as the tip and rear end parts of a hot-rolled coil. CONSTITUTION:In the cold tandem rolling mill, a plate thickness gage 20 is provided between a final stand and a stand on its upstream side, and also, based on an output of its plate thickness gage 20, a roll speed of each stand from a first stand to a last stand but a final stand and a rolling reduction position of a final stand, or a roll speed of the final stand and the rolling reduction position of the final stand is simultaneously changed by a feedforward system.</p> |
