GRAIN-ORIENTED MAGNETIC STEEL SHEET AND PROCESS FOR PRODUCING SAME

摘要

A grain-oriented magnetic steel sheet capable of being reduced in iron loss even when layers thereof are stacked and used as a transformer core, etc. is provided through magnetic-domain refinement. The grain-oriented magnetic steel sheet has thermal strain introduced thereinto in a dotted-line arrangement in which strain dots have been lined in a direction that crosses the rolling direction of the steel sheet, wherein the strain dots introduced in the dotted-line arrangement have a size of 0.10-0.50 mm and the distance between the adjacent strain dots is 0.10-0.60 mm.