| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a method for controlling a sheet width in a cold rolling process, which can expand the function for controlling the sheet width in the cold rolling process, and can achieve an effect for improving the yield and the reduction of production cost due to the reduction of a trimming width and the reduction of a margin for the width. <P>SOLUTION: In the cold rolling process for manufacturing a metal strip using at least a tandem cold rolling apparatus and a continuous annealing apparatus, a sheet width of the metal strip is detected by a sheet width detector provided in an upstream side of the entrance of the final stand of a tandem cold rolling machine. The shape of the metal strip in the final stand of the tandem cold rolling machine is controlled by the feedforward control using the relationships among predetermined conditions of heat treatment in the continuous annealing apparatus, the shape of the metal strip at the inlet side of the continuous annealing apparatus, and the variation of the sheet width of the metal strip between the inlet side and the outlet side of the continuous annealing apparatus, based on the difference between the required reference value of the sheet width and the measurement value of the sheet width measured by the sheet width detector. <P>COPYRIGHT: (C)2004,JPO</p> |
