K-TIG焊接电弧特性的数值分析  

Numerical analysis on keyhole gas tungsten arc welding

作　　者：张瑞华[1] 栗海霞[1] 李明[1] 王荣[2] 冷小冰[3] 

机构地区：[1]兰州理工大学甘肃省有色金属新材料省部共建国家重点实验室,甘肃兰州730050 [2]苏州工业园区华焊科技有限公司,江苏苏州215021 [3]中山职业技术学院,广东中山528404

出　　处：《电焊机》2012年第12期7-11,共5页Electric Welding Machine

摘　　要：以K-TIG焊枪为研究对象,根据磁流体动力学理论建立了电弧的三维有限元数学模型,利用FLUENT软件对K-TIG焊枪内部保护气体和焊接电弧进行了数值模拟,获得大电流焊接时的温度分布、电势分布、电弧压力及等离子体速度场分布。模拟结果可以用于指导K-TIG大电流焊枪设计、焊接过程控制及焊缝质量评价等。Keyhole gas tungsten are welding torch was chosen as the studied object. A 3-D mathematic model was developed according to the theory of magnetic fluid dynamics,the K-TIG welding arc and the protecting gases in the K-TIG wehting torch was stimulated and analysed using FLUENT software. The tenlperature,velocity of the plasma,potential and are pressure distrilmtions of K-TIG wehting torch were obtained. The results can be used to guide K-TIG welding torch design,welding process control and welding quality evaluation,etc.

关 键 词：K-TIG焊接电弧 磁流体动力学 FLUENT 数值模拟 

分 类 号：TG403[金属学及工艺—焊接]