TANDEM ROLLING METHOD OF H-BEAM

摘要

PURPOSE:To roll a H-beam from a steel stock without dimensional fluctuation by freely rotatably constituting edging rolls of an edging rolling mill disposed between universal rolling mills and subjecting the steel stock to tandem rolling. CONSTITUTION:The respective edging rolls 5a of the edging rolling mill 5 are made freely rotatable and non-driven in a method for tandem rolling the steel stock to the H-beam by a tandem reversible or tandem continuous type rolling mill train consisting of at least one edging rolling mill 5 and at least one unit each of the universal rolling mills 4, 4 disposed before and behind the edging rolling mill. The steel stock is thus rolled to an H shape by the horizontal rolls 4a and vertical rolls 4b of the above-mentioned universal rolling mill 4 and is pushed into the edging rolling mill 5 or drawn therefrom so that the steel stock is rolled without generating the error of the roll speed in the edging rolling mill 5 and the H-beam having no dimensional fluctuations is obtd.