| 摘要 |
<p>PURPOSE: To obtain a new rolling method for obtaining a product sheet having good flatness and highly accurate thickness in rolling using reversing rolling mill. CONSTITUTION: At the time of executing reversing rolling according to a predetermined pass schedule, at a 1st pass of the reversing rolling, initialization of shape control function in accordance with the target rolling load which is determined from a load estimating equation and correction of screw down position for making actual rolling load during rolling to coincide with the target rolling load are executed. Rolling is executed while respectively executing learning of parameters of the load estimating equation. As for passes on and after a 2nd pass, rolling is executed while repeatedly executing the correction of the pass schedule to the final pass based on the load estimating equation learned at the preceding pass, initialization of the shape control function in accordance with the target rolling load determined from the load estimating equation, correction of the rolling reduction position for making the actual rolling load to coincide with the target rolling load and learning of the parameter of the load estimating equation during rolling or just after rolling of each pass.</p> |
