NON ORIENTED ELECTRICAL STEEL SHEET

A non oriented electrical steel sheet consists of a silicon steel sheet and an insulation coating. The silicon steel sheet includes an internally oxidized layer containing SiO2 in a surface thereof, an average thickness of the internally oxidized layer is 0.10 to 5.0 μm, and a vickers hardness in th...

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Bibliographische Detailangaben
Hauptverfasser: MURAKAWA, Tesshu, TAKAHASHI, Masaru, MATSUI, Shinichi, ICHIE, Takeru, MURAKAMI, Fuminobu
Format: Patent
Sprache:eng
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Zusammenfassung:A non oriented electrical steel sheet consists of a silicon steel sheet and an insulation coating. The silicon steel sheet includes an internally oxidized layer containing SiO2 in a surface thereof, an average thickness of the internally oxidized layer is 0.10 to 5.0 μm, and a vickers hardness in the internally oxidized layer is 1.15 to 1.5 times as compared with a vickers hardness in a thickness central area.