| 摘要 |
<p>PURPOSE:To reduce the off-gauge quantity of a passing sheet and the variations of its thickness respectively, by detecting the rolling condition of a stand located at the rear stage of a tandem mill and regulating the drooping characteristics of the motor of a prescribed stand to zero or a <= specific value, for the purpose of reducing the drooping due to the variation of tension or making it to be zero. CONSTITUTION:When a detector 8 detects that a stand 3 at the rear stage of a tandem mill comes into a rolling state, the drooping due to the variation of the tension, etc. of a rolled stock 1 to be rolled is reduced or made to be zero, by regulating the drooping characteristics of the driving motors of prescribed stands 2,3 to zero or <= specific values, with the aid of a control device 6. Thus, the off-gauge quantity of a passing steel sheet 1 is reduced and the variation of its thickness is also reduced. This control is performed in the same manner when the sheet passes through the stands.</p> |
