ROLLING METHOD FOR PARALLEL-FLANGE STEEL SHAPES

摘要

A rolling method for parallel-flange steel shapes is disclosed, which comprises the steps of: rough rolling a rolling material in a breakdown mill to form a web and two flanges connected to the ends of the web; performing intermediate rolling to reduce the flanges to substatially their final dimensions; and performing finish rolling in a universal finishing mill to reduce the web height by rolling the outer surfaces of the flanges with vertical rolls without the inner surfaces of the flanges contacting the lateral surfaces of the horizontal rolls of the universal finishing mill.