Process for the precision molding of castings

Details Process for the precision molding of castings Process for the precision molding of castings

1980-08-20

1981-09-08

Baldwin, Robert D.

Metal founding

Process

Shaping a forming surface

164132, 164 35, 164 36, B22D 2900

Patent

active

042879329

ABSTRACT:
The material used for the production of cores for precision molds is a metal which is oxidizable at relatively low temperatures, i.e., below the solidification temperature of the melts for pouring, and which passes directly from the solid state to the gas state by oxide sublimation. This greatly speeds up the dissolving of cores, particularly small diameter cores, out of the castings.

REFERENCES:
patent: 1025469 (1912-05-01), Hunter
patent: 1109886 (1914-09-01), Von Welsbach

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