Advanced Search
LI Dayong, WANG Ping, ZHANG Guangjun. Comparative study on arc shape and droplet transfer under different shielding gas compositions of Ar/He/CO2 in pulsed GMAW[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2018, 39(7): 55-59. DOI: 10.12073/j.hjxb.2018390175
Citation: LI Dayong, WANG Ping, ZHANG Guangjun. Comparative study on arc shape and droplet transfer under different shielding gas compositions of Ar/He/CO2 in pulsed GMAW[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2018, 39(7): 55-59. DOI: 10.12073/j.hjxb.2018390175
shu

Comparative study on arc shape and droplet transfer under different shielding gas compositions of Ar/He/CO2 in pulsed GMAW

  • State Key Laboratory of Advanced Welding and Joining, Harbin Institute of Technology, Harbin 150001, China

More Information
  • Received Date: January 08, 2017
    Graphical Abstract
    • Abstract
  • In order to solve the problems of poor arc stiffness and unstable droplet transfer in pulsed GMAW with high-strength Cr-Ni austenitic stainless welding wire, the arc shape and droplet transfer under different shielding gas compositions of Ar/He/CO2 were investigated by the high-speed camera for optimization of mixed gas composition in this paper. The results showed that in pure Ar, the metal transferred easily but with arc wandering and poor arc stiffness. The arc stiffness and arc energy density increased with the addition of He and CO2. The droplet transfer was multiple drops per pulse type that one big drop was followed by several small drops. With the increase of the He volume fraction, the size of the first big drop increased. The CO2 was good at overcoming the cathode spot drift, but the volume fraction can not exceed 5%. The ideal mixed shielding gas was 40%Ar+58%He+2%CO2 for good arc stiffness and stable droplet transfer in this pulsed GMAW by using austenitic stainless welding wire.
    • FullText(HTML)
    • References (5)
  • 王佳杰, 方洪渊, 张敬强, 等. 弹性状态低匹配焊接接头弯曲等承载设计准则与设计方法[J]. 焊接学报, 2016, 37(7):53-56. Wang Jiajie, Fang Hongyuan, Zhang Jingqiang, et al. Design criteria and design method for under-matched EBLCC joint in elastic stage[J]. Transactions of the China Welding Institution, 2016, 37(7):53-56.
    薛钢. 采用奥氏体型焊材焊接的10Ni5CrMoV钢接头疲劳特性研究[D]. 哈尔滨:哈尔滨工业大学, 2015.
    赵智力, 王光临, 张远健, 等. 焊接残余应力对高强度钢低匹配对接接头静载强度的影响[J]. 焊接学报, 2016, 37(6):114-117. Zhao Zhili, Wang Guanglin, Zhang Yuanjian, et al. Influence of residual stress on static load strength of under-matching butt joint of high strength steel[J]. Transactions of the China Welding Institution, 2016, 37(6):114-117.
    裘荣鹏. 保护气对奥氏体不锈钢药芯焊丝弧焊接头性能的影响[J]. 兵器材料科学与工程, 2016, 39(4):53-57. Qiu Rongpeng. Influence of shielding gas on mechanical properties of flux-cored arc weld joint of austenitic stainless steel[J]. Ordnance Material Science and Engineering, 2016, 39(4):53-57.
    吕小青, 沈俊, 李桓, 等. 熔化极脉冲氩弧焊熔滴滴落过程的分析[J]. 焊接学报, 2015, 36(12):39-42. Lü Xiaoqing, Shen Jun, Li Huan, et al. Droplet transfer analysis in pulsed gas metal arc welding[J]. Transactions of the China Welding Institution, 2015, 36(12):39-42.
    • Related Articles

  • Cited by

    Periodical cited type(0)

    Other cited types(3)

Catalog

    Get Citation
    XML
    Article views (770) PDF downloads (120) Cited by(3)
    Turn off MathJax
    Article Contents
    Abstract
    References

    Website Copyright © Editorial Office of Transactions of the China Welding Institution, Welding Journals Publishing HouseTel：0451-86323218Address：No. 2077, Chuangxin Road, Songbei District, Harbin

    Supported by: Beijing Renhe Information Technology Co. Ltd    Baidu Analytics

    /

    DownLoad:  Full-Size Img  PowerPoint
    Return
    Return