| 摘要 |
<p>PURPOSE:To perform wholly integrated control and to prevent bending surely by making adjustment of rolling reduction of a rolling mill in front side of detecting position and advancing the adjusting operation successively to the stands of inlet side. CONSTITUTION:Bending of outlet side strip 2 is detected by a bending detector 12 in the outlet side of a final rolling mill stand F6. A signal is generated from a control board 17 basing on the signal S1. A servovalve 18 is actuated and left and right cylinders 10 are raised and lowered by supplying oil from a piping 19. Rolling reduction is adjusted by working rolls 3, 4 and bending of outlet side strip 2 is corrected. By this adjustment, deviation between left and right tension of the strip before the outlet side rolling mill stand takes place. Next, basing on the difference between left and right tension signals S3 between rolling mill stands F and F, a signal is given from a control board 20 to control rolling reduction of the rolling mill stand F6. The control is made successively in the rolling mill stands F4-F1 of inlet side.</p> |
