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

B - Operations, Transporting

22

C

22/159, 22/162,

B22C 9/04 (2006.01) B22C 9/10 (2006.01) B22D 17/00 (2006.01)

Patent

CA 2013835

A method of producing salt cores for use in die casting. 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.

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