Non-oriented electrical steel sheet and manufacturing method thereof

摘要

A non-oriented electrical steel sheet includes: a base iron (1); and a tension applying type insulating film (2) of not less than 1 g/m2 nor more than 6 g/m2 on a surface of the base iron (1). An oxide layer (3) containing at least one type of oxide selected from the group consisting of Si, Al, and Cr and having a thickness of not less than 0.01 μm nor more than 0.5 μm is formed on the surface of the base iron (1).

主权项

1. A non-oriented electrical steel sheet comprising:
a base iron containing:
Si, Al, and Cr: not less than 2 mass % and not more than 6 mass % in total content,Mn: not less than 0.1 mass % and not more than 1.5 mass %,C: equal to or less than 0.005 mass %, anda balance of Fe and inevitable impurities; an oxide layer containing Al2O3 or (Al, Cr)2O3;
wherein the oxide layer has a thickness of not less than 0.01 μm and not more than 0.5 μm; andwherein the oxide layer is formed on a surface of the base iron; and a tension-applying type insulating film of not less than 1 g/m2 and not more than 6 g/m2 on the surface of the base iron.