摘要
将连续激光、脉冲激光分别与脉冲GMAW(熔化极气体保护焊)进行复合,研究了不同复合焊接模式下激光离子体与电弧等离子体的动态交互行为。研究结果表明:与连续激光+脉冲GMAW复合焊接模式相比,脉冲激光+脉冲GMAW复合焊接模式可以在激光平均功率较小的情况下获得更大的熔深;在复合过程中,当激光脉冲峰值出现的时刻错开电流峰值的上升期时,这一瞬态时刻等离子体的急剧膨胀现象可以得到抑制,激光能量的传输可以得到改善。
Continue laser or pulse laser is combined with the pulse gas metal arc welding(GMAW) to study the dynamic interaction behavior of laser plasma and arc plasma at different hybrid welding modes.The study results show that the pulse laser+pulse GMAW hybrid welding mode can achieve a higher penetration than continuum laser+pulse GMAW hybrid welding under a low average power condition.It is found that if the peak time of the laser pulse has a phase shift with the arc current pulse rise period,the phenomenon of rapid expansion of the plasma at this transient moment can be suppressed,thus improve the transmission of laser energy.
作者
张旺
孟威
郭彦兵
陆斌锋
华学明
李芳
Zhang Wang;Meng Wei;Guo Yanbing;Lu Binfeng;Hua Xueming;Li Fang(College of Materials,Shanghai Dianji University,Shanghai 201306,China;School of Materials Science and Engineering,Anhui University of Technology,Maanshan,Anhui 243032,China;Shanghai Key Laboratory of Material Laser Processing and Modification (Shanghai Jiao Tong University),Shanghai 200240,China)
出处
《中国激光》
EI
CAS
CSCD
北大核心
2019年第4期34-41,共8页
Chinese Journal of Lasers
基金
国家自然科学基金(51505271)
上海工程技术研究中心(18DZ2253400)
