| 摘要 |
<p>The present invention provides a grain oriented electrical steel sheet that may keep iron loss at low level when assembled as an actual transformer and has excellent iron loss properties as an actual transformer, in which a film thickness a 1 (µm) of insulating coating at the floors of linear grooves, a film thickness a 2 (µm) of the insulating coating on a surface of the steel sheet at portions other than the linear grooves, and a depth a 3 (µm) of the linear grooves are controlled to satisfy formulas (1) and (2): 0.3 �¢ µm ‰¤ a 2 ‰¤ 3.5 �¢ µm and a 2 + a 3 - a 1 ‰¤ 15 �¢ µm</p> |
