| 摘要 |
<p>PURPOSE:To match the width on the outlet side in rough rolling with a target width with good accuracy by measuring prescribed actual values and correcting the rolling schedule according to the measured actual values. CONSTITUTION:The respective actual values of edger rolling force, edger motor current and voltage, edger gap, edger speed, mill rolling force, mill draft position and the sheet width on the outlet side of the final pass are read and are stored into a computer 22 in the stage of rolling in each pass when a material is extracted from a heating furnace 16 and the rolling thereof is started. The operation of the correction factor of load and the operation of the correction factor for the increase of the width are executed upon completion of collection of the entire data and the computation of the prescribed average values. The gap of a vertical rolling mill is thus successively controlled and set until the width on the outlet side of the final pass attains the target width with good accuracy.</p> |
