| 摘要 |
PURPOSE:To control accurately the flatness after roughly controlling it by the controlled value of sheet crown, by installing a sheet crown detector between the stands of a front stage, and a flatness detector at the exit side of a final stand. CONSTITUTION:A detecting signal (Cr)a of a sheet crown detector 2 is transmitted to a sheet crown controlling device 3 to compare it with a set value (Cr)o, thereby a sheet crown correcting signal DELTACr is obtained to control the rolling reduction mechanism of a stand 4. Further a detecting signal (P)a of a flatness detector 6 is transmitted to a flatness controlling device 7 to compare it with a set value (P)o, thereby a flatness correcting signal DELTAP is obtained to control the rolling reduction mechanism of a final stand 5. Moreover, the signal DELTACr is transmitted to the device 7 to fetch it as the predictive controlled value of the flatness, thereby firstly the flatness of the stand 5 at the rear stage is roughly controlled and successively the flatness is accurately controlled by the signal DELTAP. |
