Method for the production of frozen mould bodies and apparatus f

Details Method for the production of frozen mould bodies and apparatus f Method for the production of frozen mould bodies and apparatus f

1985-10-03

1987-03-03

Godici, Nicholas P.

Metal founding

Process

Shaping a forming surface

164 71, 164 12, B22C 900

Patent

active

046468099

ABSTRACT:
In the production of frozen moulds (12) or cores the freezing process is accelerated by drawing the liquefied freezing agent, such as nitrogen, used for freezing the water in the mould bodies, into or through the bodies by the application of a vacuum.

REFERENCES:
patent: 3008199 (1961-11-01), Jeppesen
patent: 3512571 (1970-05-01), Phelps
patent: 3749151 (1973-07-01), George et al.
patent: 3888299 (1975-06-01), Bardet
patent: 4150704 (1979-04-01), Hoult
Patent Abstracts of Japan, abstract of JP-56-47241, publ. 1981-04-28.
Patent Abstracts of Japan, abstract of JP-56-47240, publ. 1981-04-28.
Patent Abstracts of Japan, abstract of JP-56-6754, publ. 1981-01-23.
Patent Abstracts of Japan-abstract of JP-55-84250, publ. 1980-06-25.

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