Method for making a hollow cast article by the lost wax method

Details Method for making a hollow cast article by the lost wax method Method for making a hollow cast article by the lost wax method

1997-08-07

2000-09-19

Ryan, Patrick

Metal founding

Process

Shaping a forming surface

164 30, 164519, 164137, B22C 902, B22C 910, B22D 3304

Patent

active

061197610

ABSTRACT:
A method to suppress displacement of the core during casting when making hollow blades by applying the lost wax method using a core. A wax pattern is made which comprises a core and a layer of wax covering the core. Then at least one pin of the same material as the blade is inserted into the wax layer such that this pin engages the core and part of the pin projects from the outer surface of the wax layer, after which, with the portion of the pin which projects from the outer surface of the wax layer being held in a casting mold, the wax is removed, followed by casting.

REFERENCES:
patent: 3596703 (1971-08-01), Bishop
patent: 4216815 (1980-08-01), Feagin
patent: 4811778 (1989-03-01), Allen et al.
patent: 4986333 (1991-01-01), Gartland

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