Study on droplet characteristics of laser-CMT hybrid welding of aluminum alloy

MA Yubin; LIANG Ying; CI Pengyu; CHEN Feiji

doi:10.12299/jsues.22-0331

Volume 37 Issue 4

Dec. 2023

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Article Navigation > Journal of Shanghai University of Engineering Science > 2023 > 37(4): 368-371

MA Yubin, LIANG Ying, CI Pengyu, CHEN Feiji. Study on droplet characteristics of laser-CMT hybrid welding of aluminum alloy[J]. Journal of Shanghai University of Engineering Science, 2023, 37(4): 368-371. doi: 10.12299/jsues.22-0331

Citation:

MA Yubin, LIANG Ying, CI Pengyu, CHEN Feiji. Study on droplet characteristics of laser-CMT hybrid welding of aluminum alloy[J]. Journal of Shanghai University of Engineering Science, 2023, 37(4): 368-371. doi: 10.12299/jsues.22-0331

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Study on droplet characteristics of laser-CMT hybrid welding of aluminum alloy

doi: 10.12299/jsues.22-0331

School of Materials Science and Engineering, Shanghai University of Engineering Science, Shanghai 201620, China

Received Date: 2022-11-07
Publish Date: 2023-12-30

Abstract

Abstract

An aluminum alloy laser-cold metal transfer (CMT) hybrid welding experiment platform and a high-speed camera acquisition platform were established to study the droplet characteristics of aluminum alloy laser-CMT welding process. By changing the laser power, the high speed images of CMT droplet transition under different welding parameters were obtained. Comparative analysis shows that when the laser power is small, the laser mainly plays the role of guiding arc, and has little influence on CMT arc. The welding process is stable and good weld formation can be obtained. When the laser power is large, it will affect the original short circuit transition of CMT, resulting in droplet splashing and other conditions, and lead to poor weld formation. The result shows that keeping the effective distance between the welding wire and the laser and controlling the laser power are the key to ensure the stability of the laser-CMT composite welding process.
- laser,
- cold metal transfer (CMT),
- hybrid welding,
- aluminum alloy

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References(15)

References

[1]	杨修荣. 超薄板的CMT冷金属过渡技术[J] . 焊接,2006(12):52 − 54.
[2]	SCHIERL A. The CMT process-a revolution in welding technology[J] . Welding in the world,2005,49(9):38.
[3]	FENG J C, ZHANG H T, HE P. The CMT short-circuiting metal transfer process and its use in thin aluminium sheets welding[J] . Materials & Design,2009,30(5):1850 − 1852.
[4]	PICKIN C G, WILLIAMS S W, LUNT M. Characterisation of the cold metal transfer (CMT) process and its application for low dilution cladding[J] . Journal of Materials Processing Technology,2011,211(3):496 − 502. doi: 10.1016/j.jmatprotec.2010.11.005
[5]	PICKIN C G, YOUNG K. Evaluation of cold metal transfer (CMT) process for welding aluminium alloy[J] . Science and Technology of Welding & Joining,2006,11(5):583 − 585.
[6]	蔡伟乐. 激光电弧复合热源焊接技术及其应用[J] . 金属加工: 热加工,2013(12):28 − 30.
[7]	崔旭明, 李刘合, 张彦华. 激光−电弧复合热源焊接[J] . 焊接技术,2003,32(2):19 − 21.
[8]	雷振, 徐良, 徐富家, 等. 激光−电弧复合焊接技术国内研究现状及典型应用[J] . 焊接,2018,546(12):15 − 20.
[9]	王威, 王旭友, 赵子良, 等. 激光−MAG电弧复合热源焊接过程的影响因素[J] . 焊接学报,2006,27(2):6 − 10. doi: 10.3321/j.issn:0253-360X.2006.02.002
[10]	PINTO H, PYZALLA A R, HACkL H, et al. A comparative study of microstructure and residual stresses of CMT-, MIG- and laser-hybrid welds [J]. Materials Science Forum, 2006, 524/525:627−632.
[11]	刘西洋. Nd: YAG激光 + CMT复合热源不锈钢焊接工艺研究[D]. 哈尔滨: 哈尔滨理工大学, 2010.
[12]	ZHANG C, LI G, GAO M, et al. Microstructure and process characterization of laser-cold metal transfer hybrid welding of AA6061 aluminum alloy[J] . International Journal of Advanced Manufacturing Technology,2013,68(5/6/7/8):1253 − 1260. doi: 10.1007/s00170-013-4916-y
[13]	雷正龙, 黎炳蔚, 朱平国, 等. 波长对激光−CMT复合焊熔滴过渡行为的影响[J] . 中国激光,2018(10):97 − 103.
[14]	黎炳蔚. 激光−CMT电弧复合焊接熔滴过渡行为研究[D]. 哈尔滨: 哈尔滨工业大学, 2017.
[15]	赵俊鹏, 刘子奇, 刘长军. 激光−CMT复合焊接的研究现状[J] . 热加工工艺,2022,51(9):6.