| 摘要 |
<p>PURPOSE:To set roll gap with high accuracy at the time of change of rolling speed in cold rolling or the like. CONSTITUTION:The forward slip, rolling speed, tension on the inlet and outlet sides and thickness changing amount of a rolled stock S, and rolling load P of an upper and lower work rolls 1, 2 at stational rolling are detected and the coefficients of friction between the rolled stock S and the upper and lower rolls l, 2 are calculated from those detected values, the numerical values of the diameters of the upper and lower work rolls 1, 2 and thickness of the rolled stock S on the inlet and outlet sides which are preliminarily input set. By estimating the variation patterns of coefficient of friction at the time of accelerating or decelerating rolling under arbitrary conditions from the value of those coefficients of friction, rolling speed, rolling sheet ratio and the whole draft, setting of the roll gap that the fluctuating pattern is considered is executed.</p> |
