| 摘要 |
<p>PROBLEM TO BE SOLVED: To improve accuracy in plate thickness control, while securing stable strip-feeding performance.SOLUTION: In a plate thickness control device 4, a limit setting part 43 sets an upper limit value of a closing directional variation in rolling reduction when adjusting work rolls 31a and 31b in the closing direction and an opening directional variation when adjusting the work rolls 31a and 31b in the opening direction, based on at least one of an allowable value of a meandering amount of a steel plate S, a mass flow compensation amount and steepness of a shape change. A plate thickness control part 41 controls a plate thickness of the steel plate S by adjusting the rolling reduction within a range in which a variation in the rolling reduction before and after an adjustment does not exceed the upper limit value set by the limit setting part 43.</p> |
