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Verfahren zum Blankglühen von eine hohe Affinität zu Sauerstoff aufweisenden Metallen
EP0992590A1
European Patent Office
- Other languages
English French - Inventor
Peter Helmut Dipl.-Ing. Ebner Heribert Dipl.-Ing. Lochner - Current Assignee
- Individual
Description
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Claims (2)
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- Verfahren zum Blankglühen von eine hohe Affinität zu Sauerstoff aufweisenden Metallen in einem Haubenofen od. dgl. unter Schutzgas, dadurch gekennzeichnet, daß als Schutzgas ein möglichst reines Edelgas, wie Argon, Neon oder Helium im Zusammenwirken mit einem Sauerstoffbinder, vorzugsweise Titan, verwendet wird.
- Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß zum Blankglühen von mit Restschmiermitteln behafteten Metallen zuerst das Schmiermittel unter einem Schutzgas abgedampft wird, das aus Edel- oder Inertgas, z. B. Stickstoff, und/oder einem reduzierenden Gas, z. B. Wasserstoff, besteht, und daß dann zum anschließenden Blankglühen als Schutzgas das möglichst reine Edelgas, das mit höchstens 50 Vol. % eines reduzierenden Gases vermischt ist, im Zusammenwirken mit einem Sauerstoffbinder, vorzugsweise Titan, verwendet wird.