Metal founding – Process – Shaping liquid metal against a forming surface
Patent
1993-05-18
1995-04-11
Bradley, P. Austin
Metal founding
Process
Shaping liquid metal against a forming surface
164259, 75709, 75 1017, 75 1018, 266207, B22D 2300
Patent
active
054049296
ABSTRACT:
A process for casting high oxygen affinity metals or metal alloys such as titanium through use of an induction furnace while preventing the pick up of contaminating gas by the metals or metal alloys during melting. An inert shielding gas such as nitrogen or argon or carbon dioxide is introduced as a liquid in a closed environment above the metal or metal alloys being melted such that there is preferably no more than approximately 1% contaminating gas in the gaseous environment proximate the surface of the molten metal or metal alloy. Simultaneously, the mold placed under the induction furnace is purged with a similar or different inert gas.
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Bradley P. Austin
Liquid Air Corporation
Miner James
Wittenberg Malcolm B.
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