| 摘要 |
PROBLEM TO BE SOLVED: To suppress the whole loss including the efficiency of downstream stages after finish rolling in the rolling of a thick plate.SOLUTION: In the method of rolling the thick plate, the thick plate is rolled in the order of adjusting rolling, lateral-spreading rolling and finish rolling and a bulged part is formed at each end in the longitudinal direction of rolling at least by the lateral-spreading rolling. By predicting a plane shape profile of a material to be rolled after the end of the finish rolling, the amount of bulge to be formed at each end in the longitudinal direction of the final pass of the lateral-spreading rolling on the basis of the predicted value of the plane shape profile is determined on the basis of the size of a crop which is predicted to be formed at each end in the longitudinal direction of rolling by the finish rolling and the length projected in the longitudinal direction of the rolling of the crop. |
