METHOD FOR MANUFACTURING HOT-ROLLED STEEL STRIP

PROBLEM TO BE SOLVED: To provide a method of manufacturing a hot-rolled steel strip which is not influenced by the capacity of a shear in a stage where a rough bar is heated with an induction heating device and then cut with the shear between a roughing mill and a finishing mill. SOLUTION: After making a slab into the rough bar by performing the rough rolling with a roughing mill, the slab is made into the hot-rolled steel strip by heating the rough bar with the induction heating device for heating the whole in the width direction of the rough bar and then cutting the width direction at an arbitrary place of the rough bar with the shear and successively performing the finish rolling of the rough bar with a finishing mill. When heating the rough bar with the induction heating device, a local region including the predetermined cutting part with the shear and the vicinity thereof are heated more intensively than the front and rear regions of the local region in the longitudinal direction of the rough bar, and the local region is heated to a temperature which is preliminarily set or above. COPYRIGHT: (C)2005,JPO&NCIPI