Invention Grant
- Patent Title: Closure of cooling holes with a filling agent
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Application No.: US13722253Application Date: 2012-12-20
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Publication No.: US09884343B2Publication Date: 2018-02-06
- Inventor: William Bogue , Ron I. P. E. Prihar
- Applicant: UNITED TECHNOLOGIES CORPORATION
- Applicant Address: US CT Farmington
- Assignee: UNITED TECHNOLOGIES CORPORATION
- Current Assignee: UNITED TECHNOLOGIES CORPORATION
- Current Assignee Address: US CT Farmington
- Agency: Cantor Colburn LLP
- Main IPC: B05D7/22
- IPC: B05D7/22 ; F23R3/00 ; C23C4/02 ; F01D5/00 ; F01D5/28 ; B23P6/00

Abstract:
A method for filling cooling holes in a component of a gas turbine engine is disclosed. The component may include a plurality of first cooling holes extending through the wall of the component. The method may comprise the steps of exposing the outer surface of the component, filling the plurality of first cooling holes with a polyimide, curing the polyimide to block the passage of cooling fluid through the plurality of first cooling holes, and applying a thermal bather coating over the outer surface of the component. The method may further include the step of installing a second plurality of cooling holes in the wall of the component wherein the plurality of second cooling holes penetrate the thermal barrier coating and the wall of the component and allow cooling fluid to pass therethrough.
Public/Granted literature
- US20140174092A1 Closure of Cooling Holes with a Filling Agent Public/Granted day:2014-06-26
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