| 摘要 |
<p>PURPOSE:To perform smoothly the alteration of setting without causing abnormal value in inter-stands tension by the method in which after stand where there is a size-changing point is reached, the alteration of set value is concurrently made unitl the ensuing stand is reached. CONSTITUTION:By detecting the border line between the leading material and the following material which are bited into one of rolling stands, the set value for the sliding resistance apparatus for leading material is subtracted from the set value for sliding resistance apparatus for setting roll speed ratio of the following material to be rolled, and then the value thus obtained is set up as a roll speed ratio for stand through coefficient converter. The roll gap set value for the leading material is subtracted from the roll gap set value for the following material, and the value thus obtained is given as a target value for roll gap moving apparauts to obtain an actually measured value for setting roll gap and thus to make coincide the values of variable proportional gain in the coefficient converter of each stand and the roll gap moving apparatus until it bited into the ensuing stand from the coil bonder line. Thus, the variation in tension due to the change in schedule can be controlled to a minimum.</p> |
