Effect of Shielding Gas on Droplet Transfer and Arc Stability of ER5356 Aluminum Alloy Wire

CHEN Haoxin; ZHANG Tianli; WU Wen; ZHU Zhiming; LIN Sanbao; JING Wen; WU Pengbo

doi:10.7512/j.issn.1001-2303.2023.08.07

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Effect of Shielding Gas on Droplet Transfer and Arc Stability of ER5356 Aluminum Alloy Wire
Vol. 53, Issue 8, Pages: 46-54(2023)
DOI： 10.7512/j.issn.1001-2303.2023.08.07

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陈浩欣，张天理，武雯，等.保护气体对ER5356铝合金焊丝熔滴过渡及电弧稳定性的影响［J］.电焊机，2023，53（8）：46-54.

CHEN Haoxin, ZHANG Tianli, WU Wen, et al.Effect of Shielding Gas on Droplet Transfer and Arc Stability of ER5356 Aluminum Alloy Wire[J].Electric Welding Machine, 2023, 53(8): 46-54.
陈浩欣，张天理，武雯，等.保护气体对ER5356铝合金焊丝熔滴过渡及电弧稳定性的影响［J］.电焊机，2023，53（8）：46-54. DOI： 10.7512/j.issn.1001-2303.2023.08.07.

CHEN Haoxin, ZHANG Tianli, WU Wen, et al.Effect of Shielding Gas on Droplet Transfer and Arc Stability of ER5356 Aluminum Alloy Wire[J].Electric Welding Machine, 2023, 53(8): 46-54. DOI： 10.7512/j.issn.1001-2303.2023.08.07.

摘要

采用ER5356铝合金焊丝对6 mm厚的5083-H111铝合金进行了MIG焊接试验，通过焊接质量分析平台和高速摄像机采集分析了100%Ar、75%Ar+25%He、50%Ar+50%He和100%He四种保护气体下的电弧熔滴过渡形貌和电信号特征。结果表明：随着保护气体中He比例的增加，电弧形貌由钟罩形向扁束状转变，电弧底部有收缩的趋势，电弧光亮的弧柱区域面积减少；电弧电压升高，焊接电流变大，导致电弧收缩和电弧密度提高，从而影响了焊丝的熔化速率，增加了熔滴过渡的频次，焊接电流概率密度曲线变化不大，电弧电压概率密度曲线发散较明显，熔滴过渡趋于不稳定，从短路过渡向亚射流过渡转变，但是熔滴尺寸均匀性变差，熔滴颗粒不均匀。总体来说随着He的增加，电弧稳定性较差，但熔滴过渡形式得到了一定的改善。

Abstract

This article used ER5356 aluminum alloy welding wire to conduct MIG welding experiments on 6mm thick 5083-H111 aluminum alloy. The welding quality analysis platform and high-speed camera were used to collect and analyze the arc droplet morphology and electrical signals with four different shielding gases: 100% Ar, 75% Ar+25% He, 50% Ar+50% He, and 100% He. The results show that as the proportion of He gas in the shielding gas increases, the arc morphology changes from bell shaped to flat bundle shaped, and there is a trend of contraction at the bottom of the arc. The area of the bright arc column area decreases; As the arc voltage increases, the welding current increases, leading to arc shrinkage and an increase in arc density, which affects the melting rate of the welding wire and increases the frequency of droplet transfer. The welding current probability density curve does not change much, while the arc voltage probability density curve diverges significantly. The droplet transfer tends to be unstable, transitioning from short circuit transfer to sub jet transfer, but the uniformity of droplet size decreases and the droplet particles are uneven. Overall, with the increase of He, the stability of the arc is poor. However, the droplet transfer mode is improved to some extent.

关键词

保护气体铝合金焊丝电弧稳定性熔滴过渡

Keywords

shielding gasesaluminum alloy wirearc stabilitydroplet transfer

references

贾剑平，刘继岗，王鑫. 焊接电弧稳定性的研究进展［J］. 热加工工艺，2016，45（13）：5-7.

JIA J P，LIU J G，WANG X. Research progress on stability of welding arc［J］. Hot Working Technology，2016，45（13）：5-7.

González Pérez Iván，Meruane Viviana，Mendez Patricio F. Deep-learning based analysis of metal-transfer images in GMAW process［J］. Journal of Manufacturing Processes，2023，85：9-20.

方乃文，刘鑫宇，黄瑞生，等. 6061-T6铝合金MIG焊接接头根部间隙对其化学成分及组织演化的影响［J］.轻合金加工技术，2020，48（12）：53-57.

FANG N W， LIU X Y， HUANG R S，et al. Effect of Root Gap on Chemical Composition and Microstructure Evolution of 6061-T6 Aluminum Alloy MIG Welding Joint［J］. Light Alloy Fabrication Technology，2020，48（12）：53-57.

张天理，栗卓新，荆洪阳，等. 自保护药芯焊丝全位置焊接电弧稳定性分析与评价［J］. 焊接学报，2014，35（8）：99-102.

ZHANG T L，LI Z X，JING H Y，et al. Analysis and evaluation of arc stability of self-shielded fluxcored wire in all-position welding［J］. Transactions of the China Welding Institution，2014，35（8）：99-102.

CAI X Y，LIN S B，WANG B Z，et al. Droplet transfer and weld formation of MIG welding with Ar-He alternating gas for aluminum alloy［J］. Journal of Manufacturing Processes，2020，49：94-101.

王宁，栗卓新，TILLMANN Wolfgang，等. 焊缝金属硅锰质量比对小电流焊接不锈钢药芯焊丝熔滴过渡及电弧稳定性的影响［J］. 机械工程材料，2019，43（3）：13-16.

WANG N，LI Z X，TILLMANN W，et al. Effect of Si to Mn mass ratio in weld metal on droplet transfer and arc stability of stainless steel flux-cored wire during low-current［J］. Welding Mechanical Engineering Materials，2019，43（3）：13-16.

PAN J G，YUAN B，GE J G，et al. Influence of arc mode on the microstructure and mechanical properties of 5356 aluminum alloy fabricated by wire arc additive manufacturing［J］. Journal of Materials Research and Technology，2020，20：1893-1907.

LUO Y，LI J L，XU J，et al. Influence of pulsed arc on the metal droplet deposited by projected transfer mode in wire-arc additive manufacturing［J］. Journal of Materials Processing Technology，2018，259：353-360.

王宝，宋永伦，Rehfeldt D，等. 汉诺威焊接材料工艺性分析系统在焊接材料领域中的应用［J］. 焊接，2006（10）：15-18．

WANG B，SONG Y L，Rehfeldt D，et al. Application of analysator Hannover in analysis and evaluation of usability of welding consumables［J］. Welding & Joining，2006（10）：15-18.

Rao Z H，Hu J，Liao S M，et al. Modeling of the transport phenomena in GMAW using argon-helium mixtures. Part I-The arc［J］. International Journal of Heat and Mass Transfer，2010，53：5707-5721.

Rao Z H，Hu J，Liao S M，et al. Modeling of the transport phenomena in GMAW using argon-helium mixtures. Part Ⅱ-The metal［J］. International Journal of Heat and Mass Transfer，2010，53：5722-5732.

方乃文，王星星，徐锴，等. 保护气体对低镍不锈钢激光-电弧复合焊电弧特性及组织性能影响［J］. 稀有金属材料与工程，2022，51（8）：3089-3094.

FANG N W， WANG X X， XU K， et al. Effect of shielding gas on arc characteristics and microstructure properties of laser arc composite welding of low nickel stainless steel［J］. Rare Metal Materials and Engineering， 2022，51（8）：3089-3094.

方乃文，黄瑞生，闫德俊等. 低镍含氮奥氏体不锈钢激光-电弧焊电弧特性及组织性能［J］. 焊接学报，2021，42（1）：70-75.

FANG N W， HUANG R S， YAN D J， et al. Arc characteristics， microstructure and properties of laser arc welding of low nickel nitrogen austenitic stainless steel［J］. Transactions of the China Welding Institution，2021，42（1）：70-75.

Bai Y，Gao H M，Qiu L. Droplet transition for plasma-MIG welding on aluminum alloys［J］. Transactions of Nonferrous Metals Society of China，2010，20（12）：2234-2239.

李科，陈越峰，齐志龙，等. 熔化极气体保护焊熔滴过渡分析［J］. 电焊机，2015，45（10）：69-72.

LI K， CHEN Y F， QI Z L， et al. Observation and analysis of droplet transfer in gas metal arc welding［J］. Electric Welding Machine， 2015，45（10）：69-72.

王秋影，邱培现，陈辉. 激光的加入对激光-MIG复合焊熔滴过渡的影响研究［J］. 电焊机， 2020， 50（3）：126-130.

WANG Q Y， QIU P X， CHEN H. Study on the Effect of Laser Addition on the Transfer of Molten Droplets in Laser MIG Composite Welding［J］. Electric Welding Machine， 2020，50（3）：126-130.

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