Simulation on temperature field of TIG welding of copper without preheating

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...

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Bibliographic Details
Published in:Transactions of Nonferrous Metals Society of China 2006-08, Vol.16 (4), p.838-842
Main Author: 雷玉成 郁雯霞 李彩辉 程晓农
Format: Article
Language:English
Subjects:
copper
simulation
temperature field
TIG welding
TIG焊接
数值模拟
温度场
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Summary: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.
ISSN:1003-6326
DOI:10.1016/S1003-6326(06)60336-1