Method of producing salt cores for use in die casting

Details Method of producing salt cores for use in die casting Method of producing salt cores for use in die casting

1989-05-01

1989-10-24

Godici, Nicholas P.

Metal founding

Process

Shaping a forming surface

164132, 164522, B22C 910, B22D 2900

Patent

active

048755176

ABSTRACT:
A pattern, identically proportional in configuration to the salt core to be produced, is initially formed from an evaporable foam material. The evaporable foam pattern is positioned in a mold and surrounded with an unbonded flowable material, such as sand. The pattern is contacted with a molten salt and the high temperature of the salt will vaporize the pattern, with the vapor being captured within the interstices of the sand while the molten salt will fill the void created by vaporization of the foam to provide a salt core identical in configuration to the pattern. The salt core is subsequently used in a high pressure die casting operation to cast a metal part.

REFERENCES:
patent: 3311956 (1967-04-01), Townsend et al.
patent: 3459253 (1969-08-01), Woolcott

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