Fluoride cleaning of metal surfaces and product

Details Fluoride cleaning of metal surfaces and product Fluoride cleaning of metal surfaces and product

1992-11-04

1994-12-20

Weisberger, Richard P.

Metal fusion bonding

Process

With pretreating other than heating or cooling of work part...

228119, 228220, 134 7, 134 31, 148120, 148121, 148122, 148243, 148251, 148254, 148255, 148258, 148259, 427142, 4272481, 427252, 427253, B08B 500, B23K 3102

Patent

active

053739868

ABSTRACT:
A method of cleaning a metal surface includes covering the portion of the metal surface with a cleaning tape. The cleaning tape is chromium in combination with a fluoride ion source bound together by fibrillated polytetrafluoroethylene. This is applied to the portion of the area to be cleaned and is subject to heat treatment at about 1800.degree. F. and a reducing atmosphere of preferably hydrogen. This effectively cleans only the area covered by the tape. Further, the tape and binder format acts to force fluoride ions into the cracks on the surface providing a significantly improved cleaning operation.

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