ROLLING METHOD FOR SHAPE STEEL AND ROLLING MILL TRAIN THEREOF

摘要

PURPOSE:To form rolled web surfaces to smooth surfaces in the stage of using split sleeve type rolls for the horizontal rolls of universal mills by providing recesses to the mating surfaces of sleeves and shaping and rolling the same with the next edger rolls. CONSTITUTION:In the stage of using split sleeve type rolls wherein sleeves 10, 11, 12 are fitted on arbors 13 for the horizontal rolls of universal mills, recessed grooves 14 centering at the mating surfaces of the respective sleeves are beforehand formed on the outside circumferences in the mating surface parts. Projecting parts 15 by the grooves 14 are formed in the web parts of H-shaped steel or the like rolled with such horizontal rolls. Said steel is subjected to rolling reduction with the edger rolls 16 of the next stage to finish the parts 15 on the web surfaces to smooth surfaces. The rolls 16 in this case not only edge the flange end parts of the H-shaped steel but also bring the central parts thereof into contact with the web surfaces, thereby forming the smooth web surfaces having no flaws.