| 摘要 |
<p>PURPOSE:To prevent the generation of wedge that is a difference in thickness in both end parts in the width direction at the time of rolling using a work roll shift mill in which a mechanism for shifting work rolls in the width direction is provided and difference in roll gap degree is freely adjustable. CONSTITUTION:The increase and decrease of rolling reaction force in both end sides of upper and lower work rolls 9a, 9b that is generated in the case of shifting the work rolls during rolling is estimated before shifting and, at the time of shifting, the screw-down positions of the upper and lower work rolls 9a, 9b are adjusted by the rolling reaction force that the aforementioned estimated value is omitted from the measured value of rolling reaction force on both end sides of the upper and lower work rolls 9a, 9b.</p> |
