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GRAIN-ORIENTED ELECTROMAGNETIC STEEL SHEET AND MANUFACTURING METHOD FOR SAME

机译:面向晶粒式电磁钢板和制造方法

摘要

A grain oriented electrical steel sheet includes: by mass%, 0.010% or less of C; 2.50 to 4.00% of Si; 0.0010 to 0.0100% of acid soluble Al; 0.012% or less of N; 1.00% or less of Mn; 0.02% or less of S; and a balance consisting of Fe and impurities, and has a tension-insulation coating at steel sheet surface and a SiO2 intermediate oxide film layer with an average thickness of 1.0 nm to 1.0 µm at an interface between the tension-insulation coating and the steel sheet surface. In the grain oriented electrical steel, a time differential curve fM(t) of a glow discharge optical emission spectrum of a metallic element M (Al) in the SiO2 intermediate oxide film layer satisfies a predetermined condition.
机译:面向晶的电钢板包括:按质量%,0.010%或更低的C; 2.50至4.00%的SI; 0.0010至0.0100%的酸溶解; 0.012%或更少的n; 1.00%或更少的Mn; 0.02%或更少的S; 和由Fe和杂质组成的平衡,在钢板表面和平均厚度为1.0nm至1.0μm的SiO 2中间氧化物薄膜层的张力 - 绝缘涂层在张力 - 绝缘涂层和钢板之间的界面处。 表面。 在晶粒取向电钢中,SiO 2中间氧化膜层中金属元素M(Al)的辉光放电光发射光谱的时间差曲线Fm(t)满足预定条件。

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