Method for concurrent thermal spray and cooling hole cleaning

Details Method for concurrent thermal spray and cooling hole cleaning Method for concurrent thermal spray and cooling hole cleaning

2006-07-28

2009-11-24

Bareford, Katherine A (Department: 1792)

Coating processes

Spray coating utilizing flame or plasma heat

Nonuniform or patterned coating

C427S454000, C427S455000, C427S456000, C427S446000

Reexamination Certificate

active

07622160

ABSTRACT:
A method for applying a thermal barrier coating to an article having cooling holes and concurrently cleaning obstructions, such as TBC overspray or other debris, from those holes is disclosed. A thermal barrier coating is applied to a first surface of an article having cooling holes. Concurrently therewith, a plurality of particles are projected against a second surface of the article, such that at least some of the particles pass through the cooling holes, strike the overspray constituents prior to cooling, knocking at least some of the obstructions out of the cooling hole.

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