Mold core for investment casting, process for preparing the same

Details Mold core for investment casting, process for preparing the same Mold core for investment casting, process for preparing the same

1989-03-31

1990-04-24

Seidel, Richard K.

Metal founding

Process

Shaping a forming surface

164 35, 164138, B22C 904

Patent

active

049191934

ABSTRACT:
A core mold to be assembled with a shell mold for use in an investment casting process is provided. The core mold comprises a core matrix essentially consisting of an aggregate and an inorganic binder, a binder layer impregnated from the surface of said core matrix, a coating layer formed by coating a slurry over said binder layer, and a paraffin wax layer covering the exterior periphery of said coating layer. Also provided are a process for preparing the core mold and a process for preparing an investment casting mold in which the core mold is assembled.

REFERENCES:
patent: 3981344 (1976-09-01), Hayes et al.
patent: 4001468 (1977-01-01), Skubon et al.
patent: 4529028 (1985-07-01), Dybala et al.

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