| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To manufacture a steel strip having a good shape over the entire length of a coil even just after starting a rolling. <P>SOLUTION: The controlled variables of a shape control means are calculated and set so that the symmetrical component and the asymmetrical component of elongation percentage difference are matched with the target values by taking rolling load, the controlled variables of the shape control means, the crown of a base stock and a shape before rolling as variables, beforehand preparing numerical formula models for expressing the symmetrical component and the asymmetrical component of the elongation percentage difference to the center in the width about a plurality of places where are different in the distance from the end of the strip and substituting the predicted value of the rolling load, the crown of the base stock and the measured values of the shape before rolling in the numerical formula models. In the shape control during rolling, the controlled variables of the shape control means are calculated and corrected so that the symmetrical component and the asymmetrical component of the elongation percentage difference are made to coincide with the target values by substituting the measured values of the rolling load which are continuously measured, the crown of the base stock and the measured values of the shape before rolling in the numerical formula models. <P>COPYRIGHT: (C)2005,JPO&NCIPI</p> |
