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Mathematical Model Of Variable-Polarity Plasma Arc WeldingMathematical model of variable-polarity plasma arc (VPPA) welding process developed for use in predicting characteristics of welds and thus serves as guide for selection of process parameters. Parameters include welding electric currents in, and durations of, straight and reverse polarities; rates of flow of plasma and shielding gases; and sizes and relative positions of welding electrode, welding orifice, and workpiece.
Document ID
19960018831
Acquisition Source
Legacy CDMS
Document Type
Other - NASA Tech Brief
Authors
Hung, R. J. (Alabama Univ.)
Date Acquired
August 17, 2013
Publication Date
March 1, 1996
Publication Information
Publication: NASA Tech Briefs
Volume: 20
Issue: 3
ISSN: 0145-319X
Subject Category
Fabrication Technology
Report/Patent Number
MFS-26311
Accession Number
96B10136
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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