| 摘要 |
PURPOSE:To compensate the fluctuations in the thickness on the outlet side of rolling stands and to obtain a material to be rolled of uniform thikness without changing the peripheral speeds of rolls by forecasting said fluctuations from the fluctuations in the tension on the inlet and outlet sides of the rolling stands and correcting the screw down positions of the rolls. CONSTITUTION:The fluctuations in tension are detected or forecast with a tension detector 40 disposed between a final stage rolling stand 12n and an upper stream side stand 12n-1 thereof. The output of the detector 40 is inputted to an inlet side tension-thickness compensator 62, which forecasts the fluctuations in the thickness on the outlet side of the stand 12n and applies a correction signal to an automatic thickness controller 34. The output signal of the controller 34 is applied to a screw down position controller 36, which corrects the screw down position of a roll 16n. At this time, the rotating speed of a roll driving motor 14n-1 is compensated with a screw down compensation controller 48, whereby the change in the height of louvre is prevented. |
