06321449 is referenced by 59 patents and cites 9 patents.

A method of forming an internal channel within an article, such as a cooling channel in an air-cooled blade, vane, shroud, combustor or duct of a gas turbine engine. The method generally entails forming a substrate to have a groove recessed in its surface. A sacrificial material is then deposited in the groove to form a filler that can be preferentially removed from the groove. A permanent layer is then deposited on the surface of the substrate and over the filler, after which the filler is removed from the groove to yield the desired channel in the substrate beneath the permanent layer.

Title
Method of forming hollow channels within a component
Application Number
9/190066
Publication Number
6321449 (B2)
Application Date
November 12, 1998
Publication Date
November 27, 2001
Inventor
James Ross Dobbs
Tallahassee
FL, US
Paul Leonard Dupree
Scotia
NY, US
Melvin Robert Jackson
Niskayuna
NY, US
Ji Cheng Zhao
Niskayuna
NY, US
Agent
Donald S Ingraham
US
Paul J DiConza
US
Assignee
General Electric Company
NY, US
IPC
B21D 53/00
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