Cleaning of internal passages of airfoils

Details Cleaning of internal passages of airfoils Cleaning of internal passages of airfoils

B - Operations, Transporting

08

B

B08B 3/08 (2006.01) B08B 9/02 (2006.01) C23G 1/10 (2006.01) C23G 1/32 (2006.01) F01D 25/00 (2006.01) F02C 7/30 (2006.01)

Patent

CA 2364593

A chemical cleaning method for cleaning an internal passage of an engine-run gas turbine engine airfoil wherein the airfoil is immersed in an inorganic hydroxide medium at superambient temperature and atmospheric pressure for a short time to remove accumulated oxides and dirt from the internal passage. The hydroxide medium can comprise molten KOH and immersion times of the engine-run airfoil not exceeding 10 minutes are involved.

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