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Weld Repair of Thin Aluminum SheetWeld repairing of thin aluminum sheets now possible, using niobium shield and copper heat sinks. Refractory niobium shield protects aluminum adjacent to hole, while copper heat sinks help conduct heat away from repair site. Technique limits tungsten/inert-gas (TIG) welding bombardment zone to melt area, leaving surrounding areas around weld unaffected. Used successfully to repair aluminum cold plates on Space Shuttle, Commercial applications, especially in sealing fractures, dents, and holes in thin aluminum face sheets or clad brazing sheet in cold plates, heat exchangers, coolers, and Solar panels. While particularly suited to thin aluminum sheet, this process also used in thicker aluminum material to prevent surface damage near weld area.
Document ID
19860000292
Acquisition Source
Legacy CDMS
Document Type
Other - NASA Tech Brief
Authors
Beuyukian, C. S.
(Rockwell International Corp.)
Mitchell, M. J.
(Rockwell International Corp.)
Date Acquired
August 12, 2013
Publication Date
May 1, 1986
Publication Information
Publication: NASA Tech Briefs
Volume: 10
Issue: 3
ISSN: 0145-319X
Subject Category
Fabrication Technology
Report/Patent Number
MSC-20902
Accession Number
86B10292
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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