| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To suppress thickness variation caused by hardness variation of a rolled stock when rolling the rolled stock by using a tandem rolling mill. <P>SOLUTION: When controlling the roll gap of at least one of a plurality of rolling stands provided in the tandem rolling mill 1, in order to suppress the thickness variation caused by the hardness variation of the rolled stock 4, the amountΔS of change of the roll gap is determined from the amountΔP of change of the rolling load generated on the rolling stands 2 and the mill rigidity M of the rolling stand 2 and the variationΔP of the amount of change of the rolling load against the time. In particular, it is preferable to adopt the primary differential by time and/or the quadratic differential by time of the amount of change of the rolling load. <P>COPYRIGHT: (C)2009,JPO&INPIT</p> |
