| 摘要 |
<p>PURPOSE:To reduce the variation of plate thickness by variation of forward slip through on-line control when a steel sheet is rolled by a tandem mill. CONSTITUTION:Based on a sheet thickness Hi on the inlet side of an i-th stand, a sheet thickness reference value Hsi on the inlet side of the i-th stand, a roll peripheral speed command value Vref (i-1) on an (i-1)-th stand and a sheet thickness reference value hsi on the outlet side of the i-th stand, a speed variation Vi of a rolled stock by the variation of a forward slip of the i-th stand is calculated. An amount of change of a roll Vref (i-1)=-[(Hi-Hsi)/Hsi]Vref (i-1)+[hsi/Hsi] Vi is calculated and the peripheral speed of the (i-1)-th stand is changed by this amount.</p> |
