| 摘要 |
PROBLEM TO BE SOLVED: To provide a temper rolling method of a steel sheet, by which the generation of wrinkles on a succeeding steel sheet in the case that the yield stress of the succeeding steel sheet is lower than that of a preceding steel sheet when connecting a plurality of the steel sheets successively and performing temper rolling. SOLUTION: When detecting a weld zone between mutual steel sheets, the travel distance from the detected position of the weld zone is measured and tracking is performed (a1, a2). Whether the weld zone is passed through a rolling stand or not is decided on the basis of the travel distance, and when deciding that it is the passage, furthermore, whether the thickness of the succeeding steel sheet is≥2.0 mm or not is decided (a3, a4). When above mentions are satisfied, the temper rolling is performed by making the rolling tension of the succeeding steel sheet into the same value as the rolling tension of the preceding steel sheet, and when the above mentions are not satisfied, the temper rolling is performed by setting the rolling tension of the succeeding steel sheet to a smaller value than the rolling tension of the preceding steel sheet (a5). COPYRIGHT: (C)2010,JPO&INPIT
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