| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To appropriately perform centering of a steel sheet before cold rolling even in the case having a long distance between a steering roll and a cold rolling machine. <P>SOLUTION: When starting cold rolling of the steel sheet, a second sensor is used for centering control of the steel sheet H (step S1). If the oscillation frequency of the steel sheet detected by the first sensor is below the switch frequency F, the second sensor is switched on. If the oscillation frequency of the steel sheet detected by the second sensor is larger than the switch frequency F, the first sensor 10 is switched on (steps S2, S3). Based on the detection results of the first and second sensors, a hydraulic device is controlled, thereby controlling the rotation of the position of the steering roll. <P>COPYRIGHT: (C)2009,JPO&INPIT</p> |
