PRODUCTION OF FINE POWDER OF HIGH MELTING POINT METAL OR ALLOY

PURPOSE:To produce high melting point metal having fine grain size or fine alloy powder under high efficiency and high productivity by charging the powder of high melting point metal or alloy into DC arc-high frequency fixed type plasma under argon-hydrogen atmosphere, vaporizing and condensing. CON...

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Bibliographische Detailangaben
Hauptverfasser:	SHIRAISHI KATSUZO, KUBO NOBUO, FUTAKI SHOJI
Format:	Patent
Sprache:	eng
Schlagworte:	CASTING MAKING METALLIC POWDER MANUFACTURE OF ARTICLES FROM METALLIC POWDER PERFORMING OPERATIONS POWDER METALLURGY TRANSPORTING WORKING METALLIC POWDER
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Beschreibung
Zusammenfassung:	PURPOSE:To produce high melting point metal having fine grain size or fine alloy powder under high efficiency and high productivity by charging the powder of high melting point metal or alloy into DC arc-high frequency fixed type plasma under argon-hydrogen atmosphere, vaporizing and condensing. CONSTITUTION:The powder of high melting point metal of tungsten, etc., or the alloy is introduced to DC air gun 1 by using inert gas of argon, etc., as carrier gas. It is desirable that the powder of the above metal, etc., is introduced under condition of