| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a method for correcting a plate thickness by a rolling mill capable of preventing plate thickness fluctuations of a metallic band plate generating during rolling in the cold rolling mill to roll the metallic band plate. SOLUTION: The method for correcting the plate thickness by the rolling mill comprises a process to detect the plate thickness of a rolling stock to be rolled with a plate thickness gauge located in the inlet and outlet side of the rolling mill and to calculate the plate thickness deformation value, a process to correct the plate control output gain with a confirmed correlation value by on-line confirming the correlation value of the plate thickness from the plate thickness deformation value, and a process to output the gain signal corrected by the correlation value into a hydraulic draft control device which controls a gap of the rolling mill provided in the running pass of the rolling stock to be rolled, and to correct and control the band plate into a uniform plate thickness plate. In this way, for the plate thickness adjustment of FF-AGC portion, the plate deformation value from the plate thickness gauge in the inlet and outlet side is incorporated and the correlation is calculated, and the control effects are confirmed on-line and the gain correlation calculation is performed efficiently and the gap adjustment of the rolling mill to equalize the plate thickness is executed.</p> |
