铝合金超声-MIG焊接电弧行为  

Characteristics of welding arc during ultrasound-MIG hybrid welding of aluminum alloy

作　　者：范成磊[1] 谢伟峰[1] 杨春利[1] 寇毅 

机构地区：[1]哈尔滨工业大学现代焊接生产技术国家重点实验室,哈尔滨150001 [2]长春一汽大众汽车有限公司,长春130011

出　　处：《焊接学报》2014年第1期5-8,113,共4页Transactions of The China Welding Institution

基　　金：国家自然科学基金资助项目(51275134)

摘　　要：文中对铝合金超声-MIG焊接电弧行为作了系统研究.试验主要关注超声电弧在不同送丝速度和电压变化条件下的响应情况.结果表明,超声电弧的压缩效果对焊接参数存在一定选择性.在给定试验中,随着送丝速度的增加,压缩效果逐渐减弱.结合试验对电弧的自调节进行了分析,相对普通MIG焊接,超声电弧电场强度和温度都极大提高,显示出更强的焊接稳定性特点.In order to better understand the ultrasoundMIG welding process,the arc behavior during ultrasonic-MIG welding of aluminum alloy was investigated in this paper. The response of ultrasound-arc was explored at different wire feeding speeds or welding voltages. The results show that the compression effects of ultrasound-arc varied with different welding parameters. With the increase of wire feeding speed,the compression gradually became weaker. According to the results,the analysis of ultrasound-arc self-adjusting was carried out. Compared with the traditional MIG welding,the electric field strength and temperature in ultrasonic arc were greatly enhanced and led to stronger welding stability.

关 键 词：电弧压缩 电场强度 粒子运动 温度场 自调节作用 

分 类 号：TG456[金属学及工艺—焊接]