| 摘要 |
<p>PURPOSE:To improve the sheet crown control accuracy by computer control by correcting a sheet crown with consideration for a relation between the transformation point of a rolled stock and a rolling temp. CONSTITUTION:A steel type and/or components and a temp. of a rolled stock as well as predicted values of a sheet thickness, sheet width, rolling load, etc., and roll specifications, a sheet crown of the stock, and a target sheet crown after the final pass are inputted. In a 2nd step, the Ar3 transformation point is estimated nd calculated based on the steel type and/or components. In a 3rd step, a target sheet crown CRi in respective passes are calculated based on a sheet crown of the stock and a target crown after the final pass. In a 4th step, a central part temp. in the sheet width and a temp. distribution in the width direction in respective passes are estimated based on a stock temp. In a 5th step, a calculated sheet width edge temp. and the found Ar3 transformation point are compared with each other in respective passes. In the case the sheet width edge temp. is not higher than the Ar3 point, a target sheet crown CRi in respective passes is decided by performing correction based on an equation in 6th and 7th steps.</p> |
