| 摘要 |
<p>PURPOSE:To keep a roll gap and rolling reaction constant and to improve the accuracy of sheet thickness, by detecting deformation-resistance fluctuation of a rolling material before a finish pass to estimate rolling-reaction fluctuation at the finish pass so as to perform pass which eliminates the rolling-reaction fluctuation. CONSTITUTION:As for at least one pass before the final pass, of which sheet thickness is relatively thick and the sheet flatness is securable relatively easily, the rolling-reaction fluctuation at the finish pass is estimated by the deformation- resistance fluctuation in the longitudinal direction within the sheet detected at the previous pass. Then the feed-forward AGC is executed to obtain the sheet thickness at the inlet side of the finish pass, which eliminates the rolling-reaction fluctation, so as to perform a rolling which makes the roll gap and the rolling reaction substantially constant at least at the final pass.</p> |
