Simulation on temperature field of TIG welding of copper without preheating 被引量：1

Simulation on temperature field of TIG welding of copper without preheating

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摘要 According to the conservation of energy principle and technology characteristics of tungsten inert gas(TIG), a model of non-steady three-dimensional temperature field for red copper’s TIG welding with a locomotive arc was established. The temperature field of welding pool was calculated with finite element software ANSYS. Indrafted the heat enthalpy conception and the surface distribution dual-ellipsoid model, the demands of welding numerical simulation was primely satisfied. Aimed at bad weldability of red copper, the TIG welding of thick-wall red copper was studied adopting Ar+N2 without preheating. The results show that the heating effect of arc is evidently enhanced, it is viable to achieve the no preheating TIG welding of red copper. Comparing the experimental values with the calculated ones under different technological parameters, the results indicate that the model and practical course are well matched, which proves that the model is reliable and correct. According to the conservation of energy principle and technology characteristics of tungsten inert gas（TIG）, a model of non-steady three-dimensional temperature field for red copper＇s TIG welding with a locomotive arc was established. The temperature field of welding pool was calculated with finite element software ANSYS. Indrafted the heat enthalpy conception and the surface distribution dual-ellipsoid model, the demands of welding numerical simulation was primely satisfied. Aimed at bad weldability of red copper, the TIG welding of thick-wall red copper was studied adopting Ar＋N2 without preheating. The results show that the heating effect of arc is evidently enhanced, it is viable to achieve the no preheating TIG welding of red copper. Comparing the experimental values with the calculated ones under different technological parameters, the results indicate that the model and practical course are well matched, which proves that the model is reliable and correct.

作者雷玉成郁雯霞李彩辉程晓农

机构地区 School of Materials Science and Engineering

出处《中国有色金属学会会刊：英文版》 EI CSCD 2006年第4期838-842,共5页 Transactions of Nonferrous Metals Society of China

基金 Project(2003AA305970) supported by the Natonal Hi-Tech Research Program of China

关键词 TIG焊接铜温度场数值模拟预热 copper TIG welding temperature field simulation

分类号 TG457 [金属学及工艺—焊接]

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