Cleaning and liquid contact with solids – Processes – Hollow work – internal surface treatment
Patent
1994-08-05
1995-08-15
Powell, William
Cleaning and liquid contact with solids
Processes
Hollow work, internal surface treatment
134 2218, 134 34, 156640, 156345, 216 92, 216100, B08B 900, B44C 122
Patent
active
054415748
ABSTRACT:
A method and passage system is applicable to hollow structures, such as hollow rib core fan blades, for removing alpha case and contamination, for improving surface texture, and for smoothing diffusion bonded joints to reduce notches and flaws, after fabrication. The passage system allows for venting and full cavity access to permit cleaning of the interior of the hollow structure. The method of cleaning the interior of a hollow structure may comprise applying an etchant to strip the topical layer from the inside of a hollow mechanical structure, such as a hollow core airfoil; or may comprise pumping an abrasive flow through the hollow cavities of the structure.
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Hansen Kurt L.
Hill, II Johnny F.
Ludwig Arthur L.
General Electric Company
Hess Andrew C.
Powell William
Scanlon Patrick R.
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