METHOD FOR ROLLING H-SHAPE STEEL WITH GROOVE

摘要

PURPOSE:To obtain the favorable shape of groove and product with a small dispersion by making the edger rolls before finishing pass into a caliber approximated to the groove shape of the product and rolling in a rolling method by which the groove shape is provided at the tip of flange of an H-shape steel. CONSTITUTION:In the caliber C5 of the edger rolls before the final finishing universal roll, a slope 6 is made on the outer side faces of upper and lower rolls so that the outside part of the tip of flange of a rolled stock 7 in the preceding pass of the universal roll is restrained and the caliber C5 for forming the groove of the edger roll which is provided with a projecting corner part 5 with W and H which are a little larger than (w) and (h) of the dimensions of the groove shape of the product outside the bottom parts of caliber of the upper and lower rolls. After the rolled stock 7 in the preceding pass of the universal roll is rolled down in the width direction of the flange with this caliber and formed it into a shape without local bulge on the outside part of the tip of flange, the product having the favorable shape of groove with a small dispersion is obtained by forming it with the final unuversal roll.