Method and apparatus for treating gaseous material from evaporative pattern casting
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United States of America Patent
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-
Nov 5, 1991
Issued Date -
N/A
app pub date -
Mar 28, 1990
filing date -
Apr 14, 1988
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The pattern is surrounded by packed unbound molding medium within a container. The gaseous material resulting from the evaporation of the pattern is removed from within the container as the gaseous material permeates through the packed unbound molding medium. The outflow of the gaseous material is regulated to control the rate of displacement of the pattern by the molten metal. The removed gaseous material is cleaned and cooled, thereby forming condensate and detoxified gas. Thereafter the condensate, and detoxified gas are discharged.
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