Patent ID: 6230532
Filing Date: 2001-05-15
Classification: B21B

Abstract:
A shape control method used for rolling, wherein dimensional alteration is performed during the rolling, and wherein, when a sheet material is continuously rolled by a rolling mill, which includes a sheet shape altering apparatus that alters a mechanical sheet crown, said sheet shape altering apparatus controlled in accordance with target mechanical sheet crown set values before and after the dimensional alteration, said method comprising the steps of:previously setting a target mechanical sheet crown set value, during the dimensional alteration that is performed during rolling, based on the target mechanical sheet crown set values before and after the dimensional alteration prior to start of the dimensional alteration in rolling; andcontinuously controlling said sheet shape altering apparatus so that an actual mechanical sheet crown during the dimensional alteration in rolling is equal to the target mechanical sheet crown set value during the dimensional alteration in rolling.