Investment casting pattern manufacture

Details Investment casting pattern manufacture Investment casting pattern manufacture

2007-08-21

2007-08-21

Lin, Kuang Y. (Department: 1725)

Metal founding

Miscellaneous, apparatus

C164S044000, C164S045000

Reexamination Certificate

active

11523960

ABSTRACT:
At least one feed core and at least one wall cooling core are assembled with a number of elements of a die for forming a cooled turbine engine element investment casting pattern. A sacrificial material is molded in the die. The sacrificial material is removed from the die. The removing includes extracting a first of the die elements from a compartment in a second of the die elements before disengaging the second die element from the sacrificial material. The first element includes a compartment receiving an outlet end portion of a first of the wall cooling cores in the assembly and disengages therefrom in the extraction.

REFERENCES:
patent: 6637500 (2003-10-01), Shah et al.
patent: 6929054 (2005-08-01), Beals et al.
patent: 2003/0155096 (2003-08-01), Niimi et al.

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