Method and apparatus for manufacturing fine powders

The manufacture of pure, fine spherical powders has always been a problem for many materials, particularly for high-melting and highly reactive materials such as titanium, tantalum, vanadium and zirconium. The present invention provides a process and apparatus for producing such powders by rapidly h...

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Hauptverfasser:	MOONEY FRANK, NELSON FAY
Format:	Patent
Sprache:	eng
Schlagworte:	CASTING CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY MAKING METALLIC POWDER MANUFACTURE OF ARTICLES FROM METALLIC POWDER PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL POWDER METALLURGY THEIR RELEVANT APPARATUS TRANSPORTING WORKING METALLIC POWDER
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creator	MOONEY FRANK NELSON FAY
description	The manufacture of pure, fine spherical powders has always been a problem for many materials, particularly for high-melting and highly reactive materials such as titanium, tantalum, vanadium and zirconium. The present invention provides a process and apparatus for producing such powders by rapidly heating course powders containing a gas or gases to near or above their melting point, whereby the contained gas erupts explosively to form many fine particles of the host material. The fine particles are typically, but not necessarily spheroidal, depending upon the process conditions at the time of eruption and immediately thereafter. Methods are described for producing, collecting, handling, storing and passivating said fine powders.
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The present invention provides a process and apparatus for producing such powders by rapidly heating course powders containing a gas or gases to near or above their melting point, whereby the contained gas erupts explosively to form many fine particles of the host material. The fine particles are typically, but not necessarily spheroidal, depending upon the process conditions at the time of eruption and immediately thereafter. 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subjects	CASTING CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY MAKING METALLIC POWDER MANUFACTURE OF ARTICLES FROM METALLIC POWDER PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL POWDER METALLURGY THEIR RELEVANT APPARATUS TRANSPORTING WORKING METALLIC POWDER
title	Method and apparatus for manufacturing fine powders
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