Method and apparatus for hardening of foundry cores

Details Method and apparatus for hardening of foundry cores Method and apparatus for hardening of foundry cores

1977-10-11

1979-01-02

Spicer, Jr., Robert L.

Metal founding

Process

Shaping a forming surface

164228, B22C 912

Patent

active

041322606

ABSTRACT:
It is known to harden foundry cores by admixing a polymerizable material therewith and then curing by addition of a catalyst. Means are provided for injecting gaseous catalysts and compressed air, sequentially, into the die which contains the admixture of polymerizable material and foundry core material. In accordance with the invention, the gaseous catalyst and compressed air respectively, are injected into the die containing the mixture of foundry material in measured desired amounts and very rapidly.

REFERENCES:
patent: 3038221 (1962-06-01), Hansberg
patent: 3059294 (1962-10-01), Dunn et al.
patent: 3590902 (1971-07-01), Walker
patent: 3795726 (1974-03-01), Zipperer et al.
patent: 3919162 (1975-11-01), Austin
patent: 3937272 (1976-02-01), Flora et al.

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