NASA NTRS · 19940000698
Rugged Preheaters For Vacuum Plasma Spraying
Abstract
Electric 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.
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Woodford, William H., Mckechnie, Timothy N., Sander, Lewis D., Power, Christopher A., Sander, Heather L., Nguyen, Dalton D.. 1994-12-01. Rugged Preheaters For Vacuum Plasma Spraying. https://ntrs.nasa.gov/citations/19940000698
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