Removal of ceramic investment shell mold from metal casting

Details Removal of ceramic investment shell mold from metal casting Removal of ceramic investment shell mold from metal casting

1975-09-04

1977-05-24

Baldwin, Robert D.

Cleaning and liquid contact with solids

Processes

Using sequentially applied treating agents

134 41, 164131, B22D 2900

Patent

active

040253619

ABSTRACT:
Ceramic shell molds are removed from cast turbine blades by contacting the shell mold with a concentrated solution of HF whereby the binder of the shell is destroyed and the shell material falls away from the metal casting.

REFERENCES:
patent: 2605775 (1952-08-01), Kientz
patent: 2666001 (1954-01-01), Marshall
patent: 2705192 (1955-03-01), Faust et al.
patent: 3622391 (1971-11-01), Baldi

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