Metal founding – Process – Shaping liquid metal against a forming surface
Patent
1986-07-30
1988-01-12
Godici, Nicholas P.
Metal founding
Process
Shaping liquid metal against a forming surface
164508, 373 23, 373 24, B22D 2702
Patent
active
047184779
ABSTRACT:
An apparatus and method is disclosed which is adapted to consolidate and melt reactive metallic materials, and to produce a "first ingot" which is suitable for subsequent evaluation and qualification under existing specifications for such materials in the aerospace industry. The apparatus comprises an enclosed heating chamber adapted to be substantially evacuated of air, and a hearth is positioned within the chamber for supporting the metallic material to be melted. Also, a plasma arc torch is mounted to the heating chamber, which is operable in the transfer arc mode wherein an arc extends from the rear electrode of the torch to the hearth. The rear electrode of the torch is of elongate tubular configuration, which permits a major portion of the length of the arc to be located within the torch itself, which permits the torch to deliver a high level of power in the vacuum environment within the heating chamber.
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Godici Nicholas P.
Plasma Energy Corporation
Seidel Richard K.
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