| 摘要 |
<p>PURPOSE:To improve quality of a rolled stock by correcting a high set value for converging an amount of impact drop through a measured value of variation of a load torque. CONSTITUTION:An estimated amount of impact drop when each rolling mill bites a rolled stock and a high set value to converge it are set in a biting speed control of the rolled stock of a rolling line, the high set amount is corrected based on the measured value of variation of a load torque, a command value of the number of rotation is corrected when the rolled stock is bitten into each rolling mill corresponding to it. The difference between the high set amount and the amount of impact drop at the actual biting time can be inhibited automatically, bad effects given by the impact drop to the size and shape of the rolled stock are removed and high precision and high quality rolling can be actualized.</p> |
