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Hot Wax Sweeps Debris From Narrow PassagesSafe and effective technique for removal of debris and contaminants from narrow passages involves entrainment of undesired material in thermoplastic casting material. Semisolid wax slightly below melting temperature pushed along passage by pressurized nitrogen to remove debris. Devised to clean out fuel passages in main combustion chamber of Space Shuttle main engine. Also applied to narrow, intricate passages in internal-combustion-engine blocks, carburetors, injection molds, and other complicated parts.
Document ID
19900000129
Document Type
Other - NASA Tech Brief
Authors
Ricklefs, Steven K.
(Rockwell International Corp.)
Date Acquired
August 14, 2013
Publication Date
March 1, 1990
Publication Information
Publication: NASA Tech Briefs
Volume: 14
Issue: 3
ISSN: 0145-319X
Subject Category
Fabrication Technology
Report/Patent Number
MFS-29462
Accession Number
90B10129
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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