| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a steel plate levelling speed control method on a levelling machine and its equipment, which can improve manufacturing efficiency of the steel plate by avoiding collision of the tail end of a preceding steel piece with the head end of a following steel piece, and can eventually improve productivity. <P>SOLUTION: When a plurality of steel plates cooled to a designated temperature on a cooling bed 1 are successively straightened through a levelling machine 2 and when a steel plate on a transfer table on the entry side of the levelling machine is drawn in beneath the work roll of levelling machine 2 for straightening with no steel plate in the levelling machine, if the space Lb on the delivery side of the levelling machine is longer than the length of steel plate that is assumed to be drawn in and straightened, straightening on the levelling machine 2 is performed at the predetermined standard speed for straightening, and if the space Lb on the delivery side of the levelling machine is shorter than the length of steel plate that is assumed to be drawn in and straightened, straightening on the levelling machine 2 is performed at a slower speed than the standard speed for straightening, and furthermore, the shorter is the space Lb on the delivery side of the levelling machine, the slower is the straightening speed. <P>COPYRIGHT: (C)2012,JPO&INPIT |
