HOT-ROLLED STEEL SHEET FOR NON-ORIENTED ELECTRICAL STEEL SHEET NON-ORIENTED ELECTRICAL STEEL SHEET AND METHOD FOR MANUFACTURING THE SAME

摘要

The present invention is a hot-rolled steel sheet for thin-walled electric steel sheets manufactured through a direct-rolling direct connection process, It relates to a non-oriented electrical steel sheet using the same and a method for manufacturing the same. According to a preferred aspect of the present invention, as produced by a direct-rolling direct connection process, in weight percent, C: 0.005% or less (including 0%), Mn: 0.1-1.5%, Si: 1.5-3.0%, Al: 0.1% ~ 1.0%, S: 0.003% or less (including 0%), Ti: 0.003% or less (including 0%), N: 0.003% or less (including 0%), P: 0.05% or less (excluding 0%), Sn: 0.05% or less (excluding 0%), Sb: 0.01% or less (excluding 0%), Sn + Sb + P: 0.01 to 0.1%, including the remaining Fe and other unavoidable impurities; And the microstructure includes a ferrite structure of 95 area% or more, the ferrite structure is composed of a recrystallization structure and a recovery structure, and the area of the recrystallization structure based on the thickness direction cross section of the steel sheet is 55% or more hot rolled steel sheet for non-oriented electrical steel sheet , Non-oriented electrical steel sheet using the same and a method of manufacturing the same are provided.