| 摘要 |
<p>PURPOSE:To prevent the abnormal profile of a steel strip due to the thermal expansion of roll when the lot is enlarged by elongating the changing interval of a work roll by preventing the effect of a concave profile due to roll wear using of an on-line roll grinding device in the continuous hot finish rolling of the steel strip. CONSTITUTION:In this method, the rolling order of the steel strip at the time of enlarging the rolling lot is planned by using of the on-line roll grinding device so as to remove the effect of roll wear. At the time of continuously rolling many steel stips of the same rolling width, steel strips wider than these are included so that the steel strips of the same rolling width don't continue over twenty strips. In this way, the abnormal cross-sectional profile of the steel strip of the steel strip due to the expansion of the steel strip due to the expansion of the roll is prevented and the rolling lot is enlarged.</p> |
