Sand mold risers

Details Sand mold risers Sand mold risers

1978-07-07

1979-02-20

Van Balen, William J.

Stock material or miscellaneous articles

Decorative article

Constructed from filamentary or flat sheet material

164362, 428 66, B22C 908

Patent

active

041408381

ABSTRACT:
A two-part mold insert for forming a riser in a sand mold with the insert having a breakable thin collar and a cellular riser material which is compressible and gasible so that hot metal dissolves the cellular riser material but not the collar which prevents molding sand from falling into the mold during the gasification of cellular riser material.

REFERENCES:
patent: 3971433 (1976-07-01), Duchenne

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