Numerical Simulation of Metal Vapour Behavior in Double Electrodes TIG Welding
Numerical Simulation of Metal Vapour Behavior in Double Electrodes TIG Welding
复制标题
双电极TIG焊金属蒸气行为的数值模拟
DOI：
10.1007/s11090-018-9904-4
复制
发表时间：
2018-09
影响因子：
3.6
通讯作者：
Fan D.
中科院分区：
文献类型：
--
作者：
Wang X.;Luo Y.;Wu G.;Chi L.;Fan D.
Metal vapour from the weld pool in double electrodes tungsten inert gas welding is taken into account by a unified numerical model including the arc plasma and the weld pool. The thermodynamic properties and transport coefficients of the arc plasma are dependent on both the local temperature and the mass fraction of the metal vapour. A second viscosity approximation is used to describe the diffusion coefficient of the metal vapour in the arc plasma. The temperature and the flow fields of both the arc plasma and the weld pool are calculated together with the metal vapour concentration. The simulated results are presented for the cases of 3 and 9 mm electrode separation, respectively. It is shown that the metal vapour behavior is much different in these two cases. In the case of 3 mm electrode separation, the metal vapour above the mass fraction of 0.2% is concentrated just above the weld pool surface, while in the case of 9 mm electrode separation, the metal vapour is diffused to the most region of the arc plasma for the same range of mass fraction. In addition, the arc plasma temperature as well as the heat flux at the weld pool is constricted by the presence of the metal vapour. The constricted heat flux at the weld pool results in an increase in the temperature of the weld pool about 100 K or less but a slight shrinkage of the weld pool shape.
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影响因子：
3.6
作者：
A. Murphy
通讯作者：
A. Murphy
影响因子：
3.8
作者：
M. Razafinimanana;L. Hamidi;A. Gleizes;S. Vacquié
通讯作者：
M. Razafinimanana;L. Hamidi;A. Gleizes;S. Vacquié
影响因子：
3.6
作者：
J. Menart;L. Lin
通讯作者：
J. Menart;L. Lin
影响因子：
2.1
作者：
Y. Ogino;Y. Hirata;J. Kawata;K. Nomura
通讯作者：
Y. Ogino;Y. Hirata;J. Kawata;K. Nomura
DOI：
10.1088/0022-3727/46/22/224004
发表时间：
2013-05
期刊：
Journal of Physics D: Applied Physics
影响因子：
--
作者：
A. Murphy
通讯作者：
A. Murphy