| 摘要 |
<p>PROBLEM TO BE SOLVED: To perform a linear loop control by a control gain with a definite value regardless of the size of the target value of a loop quantity in each looper of the rolling mill for the bar steel and the wire rod. SOLUTION: In the rolling mill for the bar steel and the wire rod, which is equipped with plural rolling stands STi and STi+1 rolling continuously a rolling stock to roll and manufacture the wire or the bar steel and the looper 4 for forming the loop on a rolled stock between prescribed rolling stands, the loop height of the rolled stock in the looper is detected, and loop length is found by a calculation according to the detected value of the loop height. A speed correction value is outputted to at least one of the rolling stands before and after the looper so that a deviation between a loop length target value set preliminarily and the found calculated value of the loop length, is made zero.</p> |
