| 摘要 |
PURPOSE:To eliminate the fluctuation of width at the front and rear ends of a thick plate and to bring the plane shape of a product closer to a rectangular shape by edging the plate once or more times during the pass of horizontal rolling performed by turning the plate by 90 deg. after performing the draft-correcting rolling of material. CONSTITUTION:In case of rolling a thick plate through roll forming, broadside rolling, and finish rolling processes, a draft-correcting horizontal rolling is first performed in the longitudinal direction of material or in the width one, in the roll forming process and/or the broadside one. Next, in horizontally rolling the material to be rolled by turning it by 90 deg. through the broadside rolling process and/or the finish one, an edging is performed at least once or more times during said processes. In this way, a steel plate free from edges to be cut can be manufactured. |
