Composite core assembly for metal casting

Details Composite core assembly for metal casting Composite core assembly for metal casting

1986-09-03

1990-05-08

Seidel, Richard K.

Metal founding

Process

Shaping a forming surface

164132, 164522, B22C 904

Patent

active

049229915

ABSTRACT:
Disclosed is a method for making metal castings wherein a composite core assembly is utilized. The composite core assembly comprises at least one casting core and one temporary core which are in intimate contact wherein the temporary core is removed prior to casting. The improvement of the present invention comprises forming the temporary core comprising an aggregate and binder of materials such that the temporary core is sufficiently soluble in aqueous solvent for its removal prior to metal casting. The casting core is not removed by the aqueous solvent.

REFERENCES:
patent: Re31488 (1984-01-01), Trumbauer
patent: 3108341 (1963-10-01), Amala
patent: 4093018 (1978-06-01), Trumbauer
patent: 4384607 (1983-05-01), Wood et al.
patent: 4462453 (1984-07-01), Trumbauer

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