Apparatus for removing gases from molten metal, especially molte

Details Apparatus for removing gases from molten metal, especially molte Apparatus for removing gases from molten metal, especially molte

1984-10-11

1985-06-04

Andrews, Melvyn J.

Metallurgical apparatus

Means for melting or vaporizing metal or treating liquefied...

By providing, treating or protecting environment, e.g., vacuum

75 68R, F27B 1108

Patent

active

045210012

ABSTRACT:
An apparatus for removing gases from molten metal, especially from molten aluminum. A ceramic or similar melting receptacle or crucible is accommodated in a furnace. A partial pressure is produced between the removable cover of the furnace and the surface of the molten material. Between the upper rim surface of the crucible, which is made of ceramic material, and the cover, there is disposed an intermediate ring which supports this cover. A sealing ring is disposed between the intermediate ring and the rim surface of the receptacle. This sealing ring is made at least partially of fibrous material which can resist high temperatures. At a surface pressure of greater than 15 kp/cm.sup.2, the sealing ring has a compressibility of at least 10% of its cross-sectional area.

REFERENCES:
patent: 1118820 (1914-11-01), Simpson
patent: 3958980 (1976-05-01), Szekely

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