Fusion process for forming shell cores

Details Fusion process for forming shell cores Fusion process for forming shell cores

1979-08-20

1981-02-03

Baldwin, Robert D.

Metal founding

Process

Shaping a forming surface

164165, B22C 1308

Patent

active

042482887

ABSTRACT:
A process for cold forming of a shell core foundry product comprising the introduction of a first supply of binder coated granular material, hardening this first supply into the shape of separated and movably disposed core portions and subsequently introducing a second supply of binder coated granular material into spaced apart sections of the core portions and subsequently hardening this second supply in a manner which will cause fusion between the already formed core portions and the newly introduced supply of granular material in a manner which will join the previously formed core portion and thereby define an integral one piece shell core with a substantially continuous outer surface eliminating the existence of an investment hole in the formed shell core.

REFERENCES:
patent: 2797457 (1957-07-01), Kramer

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