| 摘要 |
<p>PROBLEM TO BE SOLVED: To make a sheet profile on the outlet side of the final stand and also thickness in the width direction hit the object value with high accuracy without causing defects in shape of a strip. SOLUTION: In a hot strip finishing mill consisting of a 1st stand to the 7th stand F7 which are successively provided, based on a sheet profile measured with a sheet profile meter 20A provided between the 4th stand F4 and the 5th stand F5, the sheet profile on the outlet side of the final stand is estimated and sheet profile control is executed to the rolling stands on the downstream side of the stands between which the sheet profile meter is provided so that the error between the estimated sheet profile and the target sheet profile is reduced. And, based on the measured thickness in the width direction with the sheet profile meter, thickness in the width direction on the outlet side of the final stand is estimated and screw-down locations of the rolling stands on the downstream side above-mentioned are corrected so that the error between the estimated thickness in the width direction and the objective thickness in the width direction is reduced.</p> |
