| 摘要 |
<p>PURPOSE:To improve the accuracy of a plate thickness, in an F. F. AGC control device (Feed Forward Auto Gap Control device) for plate thickness, by actually measuring a plate thickness for each fixed length from the tip end to the tail end of a rolling stock, instead of using a calculated value for a thickness measurement, and deciding an oil column Ref. CONSTITUTION:In a rolling process before an F. F. AGC operation, a plate length is measured by a length measuring device 6 of a work roll 2 and a length measuring device 12 of a roller table 11 in front of the work roll, a plate thickness is measured by a gamma ray thickness measuring device 10, and the measured length and thickness of the plate are stored in a storage device 7 for the length and thickness of a plate. In a rolling process at the time of the F. F. AGC operation, the thickness to be controlled by an arithmetic device 8 for an oil column Ref is calculated based on the plate length from the length measuring device 6 during the rolling and the stored value from the storage device 7 for the length and thickness, and then, the control is carried out by an oil control device 9.</p> |
