| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a control method for compensating the insufficient capacity of a shape control means, and manufacturing a rolled material having excellent shape accuracy with high productivity by suppressing a change in a rolling load much influential on the shape by the control of front and back tensions. <P>SOLUTION: A numerical expression model indicating differential elongation to the center of plate width at a plurality of parts with different distances from a plate end with the rolling load, the controlled variable of the shape control means, the crown of a material, the shape before the rolling and the crown of a work roll as variables, and a numerical expression model indicating the rolling load with the front and back tensions as variables are prepared in advance. The crown of the material, the measured value of the shape before the rolling and the crown of the work roll are substituted in the numerical expression model indicating the differential elongation to calculate the controlled variable of the shape control means and the rolling load so that the differential elongation is matched with the target value. The front and back tensions are calculated so that the calculated rolling load is matched with the rolling load obtained from the numerical expression model indicating the rolling load, and the calculated controlled variable of the shape control means, and the calculated front and back tensions are set. <P>COPYRIGHT: (C)2009,JPO&INPIT</p> |
