Abstract
The experimental characteristics of pulsed alternating current plasma arc (PA)-gas tungsten arc (GTA) double-sided arc welding process on LY12CZ aluminum alloy were analyzed in detail. Experimental results showed that, compared with regular GTAW and PAW process, the pulse AC PA-GTA double-sided arc welding process can remarkably increase the weld penetration, minish heat distortion and improve the weld efficiency. Plentiful experiments with multi-nozzle and single nozzle showed that double arc on the plasma arc torch can be prevented effectively with multi-nozzle, and deeper penetration can be reached with single nozzle. Arc cleaning action effect falls after the keyhole was established during keyhole pulsed AC PA-GTA double-sided arc welding process on aluminum alloy, which influences, the shape and quality of the weld.
| Original language | English |
|---|---|
| Pages (from-to) | 55-58 |
| Number of pages | 4 |
| Journal | Hanjie Xuebao/Transactions of the China Welding Institution |
| Volume | 26 |
| Issue number | 11 |
| State | Published - Nov 2005 |
Keywords
- Aluminum alloy
- Double-sided arc welding
- Keyhole
- Plasma arc (PA)
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