外加纵向磁场对短路电弧与熔滴过渡的作用  

Action of longitudinal added magnetic field on the short-circuit arc and metal transifer

作　　者：常云龙[1] 刘明旭[1] 路林[1] Babkin A S 

机构地区：[1]沈阳工业大学材料科学与工程学院,辽宁沈阳110870 [2]利佩茨克国立技术大学,俄罗斯利佩茨克州398024

出　　处：《焊接技术》2015年第5期23-27,5,共5页Welding Technology

摘　　要：利用高速摄像装置拍摄外加纵向磁场作用下的CO2焊接电弧,对电弧形态进行了研究。通过高速摄像照片得知,在外加纵向磁场的作用下,CO2焊接电弧在一最佳磁场参数范围内,呈上端收缩、下端扩张高速旋转的钟罩形。根据试验结果计算出CO2焊短路过渡的短路时间和燃弧时间,分析了外加磁场对熔滴过渡的控制作用。In this paper,the CO_2 welding arc was shot under the action of longitudinal magnetic field by using highspeed camera.The arc shape had been studied.The results showed that,the upper end of arc would contract and the low end of arc would expand under the action of longitudinal magnetic field.It would become bell type with highspeed rotating in the optimum range of the magnetic field parameters.According to the experiment,the short circuiting time and burning time of short circuiting transfer of CO_2 welding had been calculated.And the control effect of external magnetic field on the metal transfer had been analyzed.

关 键 词：纵向磁场 高速摄像 CO2焊接电弧 熔滴过渡 

分 类 号：TG403[金属学及工艺—焊接]