10046389 cites 507 patents.

A method of forming a component having an internal passage defined therein includes forming a precursor core having a shape corresponding to a shape of the internal passage, and forming a hollow structure around the precursor core. The method also includes removing the precursor core from within the hollow structure, and disposing an inner core within the hollow structure to form a jacketed core. The method further includes positioning the jacketed core with respect to a mold, and introducing a component material in a molten state into a cavity of the mold, such that the component material in the molten state at least partially absorbs the hollow structure from a portion of the jacketed core within the cavity. Additionally, the method includes cooling the component material in the cavity to form the component. The inner core defines the internal passage within the component.

Title
Method and assembly for forming components having internal passages using a jacketed core
Application Number
14/972805
Publication Number
10046389 (B2)
Application Date
December 17, 2015
Publication Date
August 14, 2018
Inventor
Stanley Frank Simpson
Simpsonville
SC, US
Agent
Armstrong Teasdale
Assignee
General Electric Company
NY, US
IPC
F04D 29/58
F04D 29/54
F04D 29/32
F01D 25/12
F01D 9/02
F01D 5/18
C23C 18/31
C25D 7/04
C25D 5/56
C25D 5/14
C25D 3/12
B22D 21/00
B22C 9/12
B22C 3/00
B33Y 80/00
B33Y 70/00
B33Y 10/00
B22C 9/24
B22C 9/10
B22D 29/00
B22D 25/02
B22D 19/00
View Original Source