CONG Baoqiang, QI Bojin, YANG Mingxuan, LI Wei, WANG Lexiao. Analysis of arc pressure and its weld quality in hybrid ultrahigh frequency pulse VP-GTAW process[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2013, (1): 21-24.
Citation:
CONG Baoqiang, QI Bojin, YANG Mingxuan, LI Wei, WANG Lexiao. Analysis of arc pressure and its weld quality in hybrid ultrahigh frequency pulse VP-GTAW process[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2013, (1): 21-24.
CONG Baoqiang, QI Bojin, YANG Mingxuan, LI Wei, WANG Lexiao. Analysis of arc pressure and its weld quality in hybrid ultrahigh frequency pulse VP-GTAW process[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2013, (1): 21-24.
Citation:
CONG Baoqiang, QI Bojin, YANG Mingxuan, LI Wei, WANG Lexiao. Analysis of arc pressure and its weld quality in hybrid ultrahigh frequency pulse VP-GTAW process[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2013, (1): 21-24.
School of Mechanical Engineering and Automation, Beihang University, Beijing 100191, China
2.
School of Mechanical Engineering and Automation, Beihang University, Beijing 100191, China;Department of Electrical Engineering, Beijing Institute of Petro-chemical Technology, Beijing 102617, China
The variations of arc pressure and weld characteristics in the welding of 2219,2A14 and 5A06 aluminum alloys were investigated based on the hybrid ultrahigh frequency pulse current variable polarity gas tungsten arc welding (HPVPGTAW) process. The experimental results show that compared with the conventional VP-GTAW (variable polarity gas tungsten arc welding) process,arc pressure and weld penetration expressed by the ratio of weld depth to width are enhanced predominantly with the effect of high frequency pulse current. Mechanical properties of welded joints are improved obviously. At the given pulse current amplitude and pulse duty cycle,the welding process is influenced significantly by the pulse current frequency in the range of 10 kHz to 80 kHz. At the given pulse frequency of 40 kHz,arc pressure and weld penetration of welded joints increased by about 90% and 70%,respectively,compared with that of welded joints with no effect of pulse current.
HAN Yongquan, CHEN Shujun, YIN Shuyan, SONG Cheng. Arc stability and its control of VPPA[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2008, (4): 18-20.
DAI Da-shan, SONG Yong-lun, ZHANG-Hui, ZHU Yi-feng. Study on Arc Force In Plasma Welding[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2002, (2): 51-54.