| 摘要 |
PURPOSE:To improve the accuracy in the web height of H-shaped steel as well as to decrease the unit of rolls and to improve the yield of rolling by restraining and rolling the web height of the H-shaped steel with web height adjusters provided to finishing universal mills for H-shaped steel. CONSTITUTION:Web height adjusters 10 consisting of horizontal rolls 1 and vertical rolls 2 which are bisected axially and are made movable and adjustable in the axial direction are provided on or right after finishing universal mills (not shown in the figure) for H-shaped steel 4, and the H-shaped steel is rolled by restraining the flanges 41 thereof between the rolls 1 and the rolls 2. Then, the height of the web 42 is regulated precisely. Since the tolerances in the height of the web 42 can be taken sufficiently small, the unit of the rolls is decreased by increasing the margins for using the inside width of the rolls 1. The thickness of the flanges 41 can be decreased correspondingly by the increased inside width, whereby the yield of rolling is improved. |
