Shell investment casting process

Details Shell investment casting process Shell investment casting process

1979-04-09

1980-12-23

Baldwin, Robert D.

Metal founding

Process

Shaping a forming surface

164244, 164246, B22C 700

Patent

active

042404932

ABSTRACT:
In a shell investment casting process a reusable pouring cup form is used. The shell mold is built up around both the pattern and the pouring cup form. When the pattern wax is removed, the pouring cup form is also removed to leave a formed in situ pouring cup. A significant feature is that the pouring cup has a rolled lip that is relatively strong and does not tend to cast debris into the mold. This lip facilitates handling of the shell mold.

REFERENCES:
patent: 1405266 (1922-01-01), Breiel
patent: 2994931 (1961-08-01), Operhall et al.
patent: 3094751 (1963-06-01), Horton
patent: 3604496 (1971-09-01), Grosjean
patent: 4108931 (1978-08-01), Ogden

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