| 摘要 |
<p>PURPOSE:To remove the variation of sheet thickness caused by the irregularity of hardness by setting control points in the longitudinal direction of a material to be rolled and correcting the rolling reduction at each control point to the value which makes the data of sheet-thickness deviation at a point corresponding to a correction pattern to be zero. CONSTITUTION:A correction-pattern generating section 29 creates a correction pattern by using a basic data. The sheet-thickness deviation of a register corresponding to a control point which arrives at the position just below a rolling roll 14, is read out by a correction-timing signal outputted from a correction-timing generating section 25. The thickness deviation is converted into a rolling-reduction correcting quantity by a multiplier 31, and it is inputted to an adder 33 through a coefficient multiplier 32. The device 33 subtracts the rolling-reduction correcting quantity from a rolling-reduction signal inputted from a sheet-thickness control device, to output the result to a rolling-reduction control device 34.</p> |
