Method for concurrent thermal spray and cooling hole cleaning

摘要

A method for applying a thermal barrier coating (22) to an article (10) having cooling holes (12) and concurrently cleaning obstructions (32), such as TBC overspray or other debris, from those holes (12) is disclosed. A thermal barrier coating (22) is applied to a first surface (11) of an article (10) having cooling holes (12). Concurrently therewith, a plurality of particles (34) are projected against a second surface (13) of the article (10), such that at least some of the particles (34) pass through the cooling holes (34), strike the obstructions (32) prior to cooling, knocking at least some of the obstructions (32) out of the cooling hole (12).