| 摘要 |
<p>PURPOSE:To match the center of the plate width of a material to be rolled and the center of a rolling mill by detecting the position at the end of the plate width in the plate width direction, calculating an optimum correction rate for draft according to the detected value and controlling the rolling-down positions on the operating side and driving side of work rolls. CONSTITUTION:The distance from a detector 8 on an operation side to the plate end on an operation side and the distance from a detector 9 on a driving side to the plate end on the driving side are detected by the detectors 8, 9. The cambering rate delta at which the movement of the material 1 to be rolled toward the operating side with the center of the rolling mill as the origin is made positive is calculated from the detected distances. The command value for the draft is outputted so as to narrow the roll gap by lowering the rolling-down position on the operating side of the rolling mill or so as to widen the roll gap by raising the rolling-down position on the driving side of the rolling mill in the case of delta<0. The command value for the draft is outputted so as to raise the rolling- down position on the operating side of the rolling mill or to lower the rolling- down position on the driving side in the case of delta<0.</p> |
