Mold with improved core for metal casting operation

Details Mold with improved core for metal casting operation Mold with improved core for metal casting operation

1975-04-25

1977-06-28

Shore, Ronald J.

Static molds

Container-type molding device

Of named component

249144, 249147, 164138, B29C 106, B29C 910, B29C 924

Patent

active

040321053

ABSTRACT:
The present invention is directed to a mold containing an improved core for use in casting hollow, metallic articles. The core is formed of, or covered with, a layer of cellular material which possesses sufficient strength to maintain its structural integrity during casting, but will crush to alleviate the internal stresses that build up if the normal contraction during solidification and cooling is restricted.

REFERENCES:
patent: 665865 (1901-01-01), Baker
patent: 1864451 (1932-06-01), Lungen
patent: 3258816 (1966-07-01), Rearwin
patent: 3431970 (1969-03-01), Olstowski et al.
patent: 3574548 (1971-04-01), Sands et al.
patent: 3863701 (1975-02-01), Niimi et al.

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