| 摘要 |
<p>PURPOSE:To always manufacture a good product, by detecting in one-line state the profile of a strip just finished a rolling work, by grinding a work roll so as to correct its profile, and by continuing the rolling work while correcting the change of roll-profile. CONSTITUTION:The profile of a strip 3 is detected by an on-line profile meter 1, etc.; the abrasion or thermal expansion (anomalous bulging or reduced crown) of a rolling roll is indirectly derected from the said profile of the strip 3 while continuing the rolling work. At a point when the profile begins to worsen, the abnormally abraded zone of the rolling roll corresponding to the abnormally bulging part of the strip 3 is ground; or otherwise, at a point before the decreasing crown exceeds a proper level after once passing an increasing period, so that before the required grinding work does not exceed the grinding capacity of an on-line roll grinder, the upper and lower work rolls F4-F7 are ground so as to remove the abnormally abraded zone or so as to resume the roll crown; hereby, the rolling work is smoothly continued.</p> |
