Joints 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.
Pulsed-Current Welding Of Nickel-Based Alloy
NASA Tech Briefs ; 17 , 2
1993-02-01
Miscellaneous
No indication
English
High-Frequency, Pulsed-Current GTA Welding
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