Investment casting molds and cores

Details Investment casting molds and cores Investment casting molds and cores

1995-07-11

1998-04-07

Hail, III, Joseph J.

Metal founding

Process

Shaping a forming surface

164 701, B22C 900, B22D 3100

Patent

active

057353352

ABSTRACT:
Investment casting molds, and particularly mold cores, are formed of sintered ceramics to near net shape and are then machined to net shape, dimensions and surface finish, by ultrasonic machining with formed tools having the final configuration in mirror image form. Form machining of fired mold shells and cores is rapid, precise, readily controlled, and can produce castings of exceptional accuracy of shape, dimensions and surface finish.

REFERENCES:
patent: 5187899 (1993-02-01), Rhoades
patent: 5465780 (1995-11-01), Muntner et al.

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