Study on droplet transfer of CMT + P welding process in SAF2507 super duplex stainless steel

被引：0
|
作者：
Huang H. [1 ]
Xu L. [1 ,2 ]
Jin H. [1 ,2 ]
Lv X. [1 ,2 ]
机构：
[1] School of Materials Science and Engineering, Tianjin University, Tianjin
[2] Tianjin Key Laboratory of Advanced Joining Technology, Tianjin
来源：
Hanjie Xuebao/Transactions of the China Welding Institution | 2019年 / 40卷 / 10期
关键词：
CMT; Droplet transfer; Heat input; Pulse; Super duplex stainless steel;
D O I：
10.12073/j.hjxb.2019400274
中图分类号：
学科分类号：
摘要：
In this paper, the high-speed camera and welding electrical signal collection system were applied to observe the metal transfer of CMT + P welding process in SAF2507 Super Duplex Stainless Steel. The metal transfer behaviors, change of waveforms and heat input characteristics with different WFS of CMT and CMT + P were analyzed. The droplet transfer characteristics were revealed. The results show that there are many differences between the actual waveforms and the theoretical waveforms. The shape and size of the droplet, transfer form, the wave state of molten pool, the distance from the wire tip to the workpiece and the spatter can all affect the fluctuation of the voltage. The voltage waveform diagram can be used to guide the analysis of the metal transfer behaviors. The pulse period plays a major role in heat input, and the control of heat input can be realized by adjusting pulse peak current, pulse base current and the number of pulses. © 2019, Editorial Board of Transactions of the China Welding Institution, Magazine Agency Welding. All right reserved.
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页码：127 / 136
页数：9
相关论文
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