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Rugged Preheaters For Vacuum Plasma SprayingElectric preheater units built to ensure large workpieces to be coated with metals by vacuum plasma spraying heated uniformly to requisite high temperatures by time plasma torch arrives. Units similar to electrical-resistance ribbon heaters in toasters and in some small portable electric "space" heaters. Nichrome resistance-heating ribbons wrapped around ceramic insulating spools on rings and on plates. Round workpiece placed in middle of ring preheater. Plate preheaters stacked as needed near workpiece.
Document ID
19940000698
Acquisition Source
Legacy CDMS
Document Type
Other - NASA Tech Brief
Authors
Woodford, William H. (Rockwell International Corp.)
Mckechnie, Timothy N. (Rockwell International Corp.)
Sander, Lewis D. (Rockwell International Corp.)
Power, Christopher A. (Rockwell International Corp.)
Sander, Heather L. (Rockwell International Corp.)
Nguyen, Dalton D. (Rockwell International Corp.)
Date Acquired
August 16, 2013
Publication Date
December 1, 1994
Publication Information
Publication: NASA Tech Briefs
Volume: 18
Issue: 12
ISSN: 0145-319X
Subject Category
Fabrication Technology
Report/Patent Number
MFS-29983
Accession Number
94B10698
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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