| 摘要 |
PURPOSE:To improve dimensional accuracy by preventing the variation of flange width and the deviation in the center of webs which are caused at the time of rolling of the H-shape steel. CONSTITUTION:In the early stage of a finishing universal rolling mill, a shaping rolling roll 10 with cavities 11 each in a shape of a bag which surrounds the tip parts of the flanges of the H-shape steel is provided. After the correction of the relative position between the flanges and the webs of the H-shape steel and the shaping of the tips of the flanges are performed with this shaping rolling roll 10, the finishing universal rolling is performed. |
