METHOD OF CASTING A METAL ARTICLE
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United States of America Patent
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N/A
Issued Date -
Jun 3, 2010
app pub date -
Dec 3, 2008
filing date -
Dec 3, 2008
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
During the casting of the metal article, a mold is lowered from a furnace assembly into a body of an inert gas. A stream having a thermal conductivity greater than the thermal conductivity of the inert gas is directed against a first portion of the mold to initiate solidification of molten metal in the first portion of the mold. The stream is subsequently directed against portions of the mold disposed in the body of inert gas and disposed above the first portion of the mold to initiate solidification of molten metal and portions of the mold above the first portion of the mold. The stream may be formed of a molten metal. Alternatively, the stream may be formed of an inert gas in which particulate is entrained.
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