| 摘要 |
<p>PURPOSE:To manufacture a rolled plate whose plate thickness accuracy is excellent by a cold tandem rolling mill. CONSTITUTION:A temperature in the longitudinal direction of a plate 12 to be rolled is detected during the time when it is subjected to hot rolling and coiled, a moving-distance of the plate 12 to be rolled, required at the time of cold rolling after cooling/pickling is detected by a measuring roll 21, and based on temperature data and the moving distance of the plate to be rolled, obtained in wuch a way, this plate 12 to be rolled is heated by a heating device in accordance with hardness in the longitudinal direction generated due to a variance of a temperature in its longitudinal direction and a variance of hardness is decreased, by which the plate 12 to be rolled can be subjected to cold rolling with high plate thickness accuracy by a cold tandem rolling mill 11.</p> |
