| 摘要 |
<p>PURPOSE:To prevent the rear throttling by controlling the rolling reduction leveling estimating the rear throttling of a stand by the difference of the load difference ratio between the load difference ratio in the stage of existing the back tension and the load difference ratio at the instance when the plate is passed through just before the upstream stand and the back tension becomes null. CONSTITUTION:The difference DELTA(Pdf/P)=(Pdf/P)2-(Pdf/P)1 between the load difference ratio (Pdf/P)1 in the tension loading before the passing through the concerned stand and the load difference ratio (Pdf/P)2 at the instance when the plate passes through the stand just before said one and its tension is vanished, is made to be a parameter. Then, based on the DELTA(Pdf/P) pattern of plural stands (the concerned stand and upstream side stand), the rear throttling is estimated to correct the rolling reduction leveling of said stand.</p> |
