Don W Bailey

US Patent:

52988350, Mar 29, 1994

Filed:

Sep 16, 1992

Appl. No.:

7/946819

Inventors:

Erich Muehlberger - San Clemente CA
Stephan E. Meuhlberger - San Clemente CA
Albert Sickinger - Irvine CA
Don E. Bailey - Moreno Valley CA
Masamichi Koga - Kitakyushu, JP
Koichi Takeda - Kawasaki, JP
Tsuyoshi Shinoda - Kitakyushu, JP

Assignee:

Electro-Plasma, Inc. - Irvine CA

International Classification:

H01J 724

US Classification:

31511121

Abstract:

A supersonic plasma system in which a vacuum source creates a low static pressure environment within an enclosure containing a plasma gun and a workpiece has plural cathodes of sealed, modular construction in conjunction with a common anode, to provide higher levels of operating power and other advantages which flow from a segmented cathode gun configuration. Inert gas independently introduced into the plural cathodes undergoes swirling motion over the cathode tips. The anode is of modular construction for easy replacement in order to change the configuration of a nozzle, a plurality of arc chambers receiving the plural cathodes or a central mixing chamber between the nozzle and the arc chambers within the anode and coupled to a central powder feed. The powder feed includes a replaceable insert which includes at least one and preferably a plurality of powder feed ports into the various arc chambers. Alternatively, metal which has already been heated to a molten state can be fed directly into the central mixing chamber.