Grain-oriented magnetic steel sheet comprising an electrically insulating coating

US7169479B2 · kind B2 · utility

Assignee

• ThyssenKrupp Electrical Steel EBG GmbH · DE

Inventors

• Bernd Schuhmacher · Dortmund, DE
• Klaus Guenther · Berlin, DE
• Hermann Hingmann · Dinslaken, DE
• Klaus Bewilogua · Plaisir, FR
• Claus-Peter Klages · Braunschweig, DE
• Heinz Dimigen · Hamburg, DE
• Thomas Jung · Wien, AT

Key dates

• Filing date: Jun 21, 2002
• Grant date: Jan 30, 2007
• Expiry date: Jun 21, 2022

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/31678
• WIPO field: Surface technology, coating
• WIPO sector: Chemistry

Abstract

The invention relates to a grain-oriented magnetic steel sheet including an electrically insulating coating made of an amorphous carbon-hydrogen network, which is applied after final annealing in order to ensure electrical insulation of the individual layers of the sheet. The grain-oriented magnetic steel sheet including the electrically insulating coating made of an amorphous carbon-hydrogen network can be used in transformers.