| 摘要 |
PROBLEM TO BE SOLVED: To prevent the generation of troubles in sheet passing such as holing and meandering of a material to be rolled during rolling with a certain rolling mill of finishing mills of a hot-rolling line and also to prevent failure from the viewpoint of the quality of a product. SOLUTION: The distribution in the width direction of elongation in the longitudinal direction of the material 8 to be rolled is determined from the distribution in the width direction of thickness of the material to be rolled which is measured on the inlet and the outlet sides of the certain rolling mill of the finishing mills 18 of the hot-rolling line and, when there are portions having locally large elongation in a view in the width direction, a rolling interval and the difference of the opening degree between work rolls of the rolling mill in the width direction of the material to be rolled are adjusted. COPYRIGHT: (C)2007,JPO&INPIT
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