| About this Abstract |
| Meeting |
2023 AWS Professional Program
|
| Symposium
|
2023 AWS Professional Program
|
| Presentation Title |
Arc and Droplet Transfer Behavior During Electrode-negative Polarity Cold Metal Transfer and Electrode-positive Pulse Gas Metal Arc Deposition of Ti-6Al-4V Alloy |
| Author(s) |
Tae Hyun Lee, Sung Yi, Dong Hyuck Kam, Cheolhee Kim |
| On-Site Speaker (Planned) |
Tae Hyun Lee |
| Abstract Scope |
In this study, arc and droplet transfer behavior were investigated during wire arc additive manufacturing (WAAM) of Ti-6Al-4V alloy. Pulsed gas metal arc welding (GMAW-P) with an electrode-positive (EP) polarity and cold metal transfer (CMT) process with an electrode-negative (EN) polarity were employed in the WAAM process. High-speed imaging was performed to investigate the mechanisms to stabilize cathode plasma jets, arc plasma, and molten metal transfer. In the EP GMAW-P, the composition of shielding gas was examined, and Ar50%/He50% mixed shielding gas showed the best performance in terms of arc stability, wire melting, droplet transfer, and spatter suppression. In the EN CMT process, sound cathode jets were shrouded by arc plasma in the EN mode, and the metal transfer was also stabilized by balanced plasma formation. |
| Proceedings Inclusion? |
Undecided |