Investment casting process

Details Investment casting process Investment casting process

1994-04-11

1996-02-27

Bradley, P. Austin

Metal founding

Process

Shaping a forming surface

164 36, 164 45, B22C 702, B22C 904

Patent

active

054940966

ABSTRACT:
An investment casting process utilizes a temporary mold which is formed by pouring a liquid over a positive pattern, and cooling the liquid until it solidifies. The positive pattern is removed, and a temporary pattern is formed by pouring another liquid into the cavity of the temporary mold, and cooling the second liquid until it solidifies. The temporary mold may then be melted or dissolved to leave a temporary pattern, which may be coated with a ceramic slurry to form a ceramic shell. The temporary pattern may then be melted or dissolved in order to remove the temporary pattern from the ceramic shell. The ceramic shell may be filled with molten metal which is allowed to solidify to form the final cast piece.

REFERENCES:
patent: 3610314 (1971-10-01), Hochgraf
patent: 5072770 (1991-12-01), Yodice
patent: 5247984 (1993-08-01), Stanciu

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