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Pulsed-Current Welding Of Nickel-Based AlloyJoints as strong (or stronger than) joints made with constant current. Report based on study of pulsed-current versus constant-current gas/tungsten arc welding of butt joints between panels of nickel-based alloy 718. In pulsed-current welding, arc current alternated between high and low value. Enables greater control of freezing and depth of penetration of weld puddle at given heat input. Thicker sections joined. Readily incorporated into automated welding system, with resultant greater uniformity and reproducibility of welds than attained in manual welding.
Document ID
19930000109
Acquisition Source
Legacy CDMS
Document Type
Other - NASA Tech Brief
Authors
Gamwell, W. R.
(NASA Marshall Space Flight Center, Huntsville, AL.)
Kurgan, C.
(NASA Marshall Space Flight Center, Huntsville, AL.)
Malone, T. W.
(NASA Marshall Space Flight Center, Huntsville, AL.)
Date Acquired
August 16, 2013
Publication Date
February 1, 1993
Publication Information
Publication: NASA Tech Briefs
Volume: 17
Issue: 2
ISSN: 0145-319X
Subject Category
Fabrication Technology
Report/Patent Number
MFS-27266
Accession Number
93B10109
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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