ORIENTED ELECTROMAGNETIC STEEL PLATE

摘要

The present invention is capable of reducing localized film release of an insulating film and, as a result, obtaining an oriented electromagnetic steel plate with excellent corrosion resistance and insulation characteristics, by controlling a1 and a2 such that formulas (1) and (2) are satisfied wherein a1 (µm) is the film thickness of an insulating coating in the bottom surface section of a linear groove and a2 (µm) is the insulating coating film thickness of the steel plate surface other than in the linear groove section. 0.3 µm?a2?3.5 µm (1); a1/a2?2.5 (2).