Process for combined casting and heat treatment

Details Process for combined casting and heat treatment Process for combined casting and heat treatment

1993-05-04

1994-07-12

Batten, Jr., J. Reed

Metal founding

Process

Shaping a forming surface

164 34, 164122, B22C 904, B22D 2704

Patent

active

053279557

ABSTRACT:
A foamed pattern of a desired part is first formed. The pattern is then dipped into a ceramic slurry and the slurry dried in order to form a shell containing the foamed pattern. A heated bed of a particulate medium is formed around the ceramic shell which causes the pattern to evaporate and form a mold. A molten metal is then introduced into the mold and solidified while being held at an elevated temperature for a period of time to accomplish a desired heat treatment of the metal. With this method, the casting does not have to be subsequently heat treated in a separate operation. It can be removed as an as cast casting, having the desired microstructures.

REFERENCES:
patent: 4222429 (1980-09-01), Kemp
patent: 5203398 (1993-04-01), Easwaran

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