|
|
|
Metal transfer modes of twin-wire indirect arc
welding |
| Shun-shan ZHANG,Dong-ting WU,Mei-qing CAO,Zeng-da ZOU, |
| School of Materials
Science and Engineering, Shandong University, Jinan 250061, China; |
|
|
|
|
Abstract Metal transfer modes of twin-wire indirect arc welding are studied and the effects of welding parameters on transfer modes are investigated in this paper. The progress of transition is captured by a high speed camera system with a xenon lamp as light source in order to remove the intense arc light. An oscilloscope is used to record the values of the parameters. Results show that anode and cathode have different transfer modes under certain conditions because of different melting rates. All the transfer modes are classified as short-circuiting transfer and free-flight transfer. The latter could be subdivided into globular transfer, projected transfer, streaming transfer, etc. The metal transfer modes of TWIAW are influenced by the welding current, arc voltage and shielding gas. With an increase in welding current and arc voltage, the transition frequency increases and droplets become smaller. Images indicate that the metal transfer modes influence arc shape periodically because of the detaching force and retainable force changing periodically.
|
| Keywords
indirect arc
twin-wire welding
metal transfer
|
|
Issue Date: 05 December 2009
|
|
|
Zhang S S, Cao M Q, Wu D T, et al. Effects of process parameters on arc shape andpenetration in twin-wire indirect arc welding. Frontiers of Materials Science in China, 2009, 3(2): 212―217
doi: 10.1007/s11706-009-0023-2
|
|
Xu G, Hu J, Tsai H L. Three-dimensional modeling of arc plasma and metal transferin gas metal arc welding. InternationalJournal of Heat and Mass Transfer, 2009, 52: 1709–1724
doi: 10.1016/j.ijheatmasstransfer.2008.09.018
|
|
Iordachescu D, Quintino L. Steps toward a new classificationof metal transfer in gas metal arc welding. Journal of Materials Processing Technology, 2008, 202: 391–397
doi: 10.1016/j.jmatprotec.2007.08.081
|
|
Kim I S, Basu A. A mathematical model of heattransfer and fluid flow in the gas metal arc welding process. Journal of Materials Processing Technology, 1998, 77: 17―24
doi: 10.1016/S0924-0136(97)00383-X
|
|
Pires I, Quintino L, Miranda R M. Analysis of the influence of shielding gas mixture onthe gas metal arc welding metal transfer modes and fume formationrate. Materials & Design, 2007, 28(5): 1623―1631
|
|
Wang C M, Cao M Q, Zou Z D. Research of twin-wire single-arc welding. Welding Technology, 2005, 134(2): 35―37
|
|
Cao M Q, Zou Z D. Metal transfer of twin-wireindirect arc argon welding. Transactionsof the China Welding Institution, 2006, 27(1): 45―48
|
|
Suban M, Tusek J. Dependence of melting ratein MIG/MAG welding on the type of shielding gas used. Journal of Materials Processing Technology, 2001, 119: 185―192
doi: 10.1016/S0924-0136(01)00940-2
|
|
Cao M Q, Zou Z D. Electric arc shape of twin-wireindirect arc welding. Transactions of theChina Welding Institution, 2006, 27(12): 50―52
|
|
Ando K, Hasegawa M. The Phenomenon of WeldingArc. Publishing Company of Mechanical Industry, 1978, 254―260
|
|
Viewed |
|
|
|
Full text
|
|
|
|
|
Abstract
|
|
|
|
|
Cited |
|
|
|
|
| |
Shared |
|
|
|
|
| |
Discussed |
|
|
|
|
