Self-tapping support for shell molds

Details Self-tapping support for shell molds Self-tapping support for shell molds

1983-04-15

1985-04-02

Lin, Kuang Y.

Metal founding

Process

Shaping liquid metal against a forming surface

164137, 164254, 164339, B22D 2716

Patent

active

045081573

ABSTRACT:
A method of casting metal in a gas permeable shell mold in which a vacuum is applied to an external upper mold surface by engaging the mold in the downwardly facing opening of a generally cylindrical vacuum chamber, defined by a chamber wall with a threaded region sized and shaped to snuggly engage a side mold surface. Engagement is effected by forcing the mold into the chamber opening while causing relative rotation of the mold and chamber.

REFERENCES:
patent: 3589199 (1971-06-01), Levin
patent: 4340108 (1982-07-01), Chandley

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