GRAIN-ORIENTED ELECTRICAL STEEL SHEET AND MANUFACTURING METHOD THEREFOR

摘要

A grain-oriented electrical steel sheet and a manufacturing method therefor are disclosed. According to one embodiment of the present invention, the method for manufacturing a grain-oriented electrical steel sheet comprises the steps of: providing a slab comprising 1.0-4.0 wt% of Si, 0.1-0.4 wt% of C, and the balance of Fe and other impurities inevitably mixed; reheating the slab; manufacturing a hot rolled steel sheet by hot rolling the slab; decarbonization-annealing the hot rolled steel sheet; cold rolling the hot rolled steel sheet which has been decarbonization-annealed; decarbonization-annealing the cold rolled steel sheet; and final-annealing the steel sheet in which cold rolling has been completed.