Investment casting pattern manufacture
AssigneeUnited Technologies Corporation
InventorKeith A. Santeler
Life of this patent
Estimating the term…
Abstract
At least one feedcore 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.
Claims14
A casting core assembly comprising:
- a feedcore;
- and
- a refractory metal core having:
- a main body for forming a cooling circuit within a wall of a turbine airfoil, said cooling circuit having a passage portion between first and second spanwise ends, an inlet end, and an outlet end and curved to conform to an adjacent surface of the wall, said main body having a main portion for forming said passage portion, a first end for forming said inlet end, a second end for forming said outlet end;
- said first end engaged to said feedcore, said second end having a plurality of tabs extending outwardly and including at least two parallel tabs for engaging recess in a die insert of a pattern die.
Dependencies are inferred from the claim text.