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上海交通大学学报（英文版）
上海交通大学学报（英文版）

郑杭

双月刊

1007-1172

xuebao2006@sjtu.edu.cn

021-62933373

200030

上海市华山路1954号上海交通大学

上海交通大学学报（英文版）/Journal Journal of Shanghai Jiaotong University(Science)EI
查看更多>>本刊是由上海交通大学主办的自然科学综合性学术期刊。它以马列主义、毛泽东思想和邓小平理论为指导。以促进科学技术发展、培育科技人才、为社会主义现代化建设服务为宗旨。本刊主要刊载船舶与海洋工程、动力、机械、能源、材料、电气、电子、计算机、化工、生物工程、管理科学，以及数学、物理、工程力学等方面的最新研究成果。本刊为中国自然科学核心期刊和中国科技论文统计用刊源之一。
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    Arc and Droplet Behaviors in Horizontal Short-Arc Pulsed Gas Metal Arc Welding of 9％Ni Steel with ERNiCrMo-3 Welding Wire

    刘轶玮华学明吴东升李芳...
    361-376页
    查看更多>>摘要：Short-arc pulsed gas metal arc welding(P-GMAW)was used to solve the difficulties of molten pool spreading and droplet transfer of Ni-based welding wire.Suppression of short-circuit current was used to reduce spatter.Arc length stabilizer was used to acquire a proper and stable arc length maintained at the critical position where short circuit starts to occur.Short-arc P-GMAW with or without arc length stabilizer was compared.The droplet transfer,arc behaviors and weld bead profiles were investigated and compared based on the high-speed photography and observation of weld cross-section.When the arc length stabilizer was deactivated,the arc length was unstable and too short.The droplet transfer mode was mainly short circuit partial transfer,with only a small part of the droplet transferred into the molten pool,with the characteristics of no obvious necking,a few spatters,small droplet impact,long short circuit duration and high short-circuit current.There was also a small proportion of short circuit complete transfer with obvious necking,larger droplet impact,shorter short-circuit duration and lower short-circuit current.With arc length stabilizer,droplet transfer modes were short circuit complete transfer and spray transfer.The spray transfer had the largest droplet impact,no short circuit and no spatter.With the arc length stabilizer activated,a deep penetration,a high penetration ratio,a small reinforcement and a large reinforcement factor were acquired.This provides an innovative method to solve the difficulties of droplet transfer and molten pool spreading and eliminate the incomplete fusion in the GM AW of 9％Ni steel with nickel-based alloy welding wire.
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