GRAIN ORIENTED ELECTRICAL STEEL SHEET AND METHOD FOR REFINING MAGNETIC DOMAINS THEREIN

摘要

The grain-oriented electrical steel sheet according to an embodiment of the present invention includes linear grooves formed on one surface or both surfaces of the electrical steel sheet in a direction intersecting the rolling direction, wherein the groove has a longitudinal direction of the groove and a normal direction of the rolling surface of the steel sheet. In the cross section to include, the inclined portion and the flat portion are included, and the width of the inclined portion GS and the width of the flat portion US satisfy Equation 1 below. [Equation 1] 1.5≤[GSW]/[USW]≤2.0