GRAIN-ORIENTIED ELECTRICAL STEEL SHEET AND METHOD FOR MANUFACTURING THE SMAE

摘要

According to an embodiment of the present invention, a grain-oriented electrical steel sheet comprises: a groove formed on a surface of the electrical steel sheet; and a forsterite layer formed in a portion or an entirety of the surface of the electrical steel sheet. Moreover, forsterite extending in the forsterite layer and trespassing on a base steel sheet in the shape of an anchor exists on a surface next to the groove.