| 摘要 |
PURPOSE:To roll H-shape steel with the section of high rigidity by properly adjusting the three elements of the shape of horizontal roll, shrinkage and thickness of web and rolling reduction for flange. CONSTITUTION:Using horizontal rolls 6B which the position in the axial direction of roll is variable and which is divided into at least two for a finishing universal mill, the thickness of flange is reduced and simultaneously the height of the web 11w is compressed while the web 11b of an intermediate rolled stock 11 to be rolled which is restrained by setting the dimension of the outside width smaller than the dimension of the outside width of horizontal rolls 4b of a roughing universal mill 4 and while raising up the angle of the flange 11f with vertical rolls 6A. The H-shape steel with the section of high rigidity is obtained by thickening the vicinity of the joint part R of the flange with the web according to the compressing quantity of web height, rolling reduction balance of flange thickness and web thickness and shape of roll at this time. |
