Process for preparing mold for investment casting

Details Process for preparing mold for investment casting Process for preparing mold for investment casting

1989-05-19

1990-05-01

Lin, Kuang Y.

Metal founding

Process

Shaping a forming surface

164 35, 164 28, 164527, 164369, B22C 904, B22C 910, B22C 118

Patent

active

049210386

ABSTRACT:
A process for preparing an investment casting mold is provided. A kneaded compound composed of an aggregate and an organic binder is cast into a core molding mold to be solidified therein to produce a core matrix which is impregnated with a heat resisting binder to an appropriate depth followed by coating with a wax, whereby a core mold is formed. The core mold is placed in position within a lost model molding mold followed by injection of a lost model forming material. A slurry and stucco particles are alternately coated over the lost model for plural times to form a refractory layer. The lost model is removed to obtain a final mold which is baked to effect simultaneous baking of the core mold and the refractory layer, the former forming the mold core and the latter forming the exterior shell mold.

REFERENCES:
patent: 4712605 (1987-12-01), Sasaki et al.
patent: 4834165 (1989-05-01), Egoshi et al.

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