| 摘要 |
<p>PURPOSE:To allow rolling with high sheet thickness accuracy even when a roll kiss arises by controlling the sheet thickness by adjustment of a rolling reduction, detecting the roll kiss from the thickness deviation on an outlet side and automatically changing a tension set value via an auxiliary control means. CONSTITUTION:The thickness of a rolled stock 1 is measured by inlet side, outlet side thickness gages 5, 6 of the rolling mill 4 and the rolling reduction is adjusted via a screw down device 7 by a rolling reduction AGC controller 11. The detected value of the outlet side thickness gage 6 of the above- mentioned automatic sheet thickness controller is inputted to a roll kiss detecting section 12. The deviation of the outlet side thickness is determined. The roll kiss state is decided when this deviation value is larger than the decided thickness deviation and the time differentiation thereof is zero. The tension set value or rolling speed set value of the rolled stock 1 is automatically changed by controlling inlet side, outlet side reel driving devices 9, 10 via an auxiliary controller 13 in accordance with the roll kiss detection. The rolling is executed with the high thickness accuracy in this way even if the roll kiss state arises in the rolling mill 4 having only the rolling reduction AGC 11.</p> |
