摘要
在惰性气体保护钨极电弧焊接 (GTAW)过程中 ,引入纵向磁场焊接 .它是以 LD1 0 CS铝合金为焊接材料 ,水冷紫铜板为阳极 ,实验用探针法测定外加纵向磁场 GTAW焊接电弧电流密度的径向分布 ,并在此基础上用磁流函数法详细推导了外加纵向磁场 GTAW焊接熔池流体所有体积力的表达式 ,建立了外加纵向磁场作用下焊接熔池流体流动和传热过程的新模型 .该模型考虑了外加纵向磁场的附加作用 ,使之更能接近外加纵向磁场 GTAW焊接的实际 。
On the basis of measuring gas tungsten-arc welding (GTAW), the longitudinal magnetic field welding technology is introduced in which LD10CS aluminum alloy is used as the welding material and a copper plate is used as the anode. The electromagnetic stirring gas tungsten arc electrical current density distribution in the radial direction was measured by was of the probe method. The new expression of body force and the model of LD10CS aluminum alloy weld pool were put forward for GTAW with additional longitudinal magnetic field controlling. The model considers the transient nature of the EMS system, surface tension forces and the heating transfer between arc and weld pool of EMS, the combined effect of additional longitudinal magnetic field and welding self-electro-magnetic field. The proposed model is quite comprehensive and more correct than the common weld pool models for this EMS welding.
出处
《上海交通大学学报》
EI
CAS
CSCD
北大核心
2001年第5期660-663,共4页
Journal of Shanghai Jiaotong University
基金
国家自然科学基金 ( 5 9775 0 5 9)
中国博士后科研基金资助项目
关键词
惰性气体保护钨极电弧焊
纵向磁场
焊接熔池
数学模型
Electromagnetic field effects
Flow of fluids
Inert gas welding
Mathematical models
Welding electrodes
