Effect of Helium-Argon Mixtures on the Heat Transfer and Fluid Flow in Gas Tungsten Arc Welding
A transient finite element model has been developed
to study the heat transfer and fluid flow during spot Gas Tungsten
Arc Welding (GTAW) on stainless steel. Temperature field, fluid
velocity and electromagnetic fields are computed inside the cathode,
arc-plasma and anode using a unified MHD formulation. The
developed model is then used to study the influence of different
helium-argon gas mixtures on both the energy transferred to the
workpiece and the time evolution of the weld pool dimensions. It is
found that the addition of helium to argon increases the heat flux
density on the weld axis by a factor that can reach 6.5. This induces
an increase in the weld pool depth by a factor of 3. It is also found
that the addition of only 10% of argon to helium decreases
considerably the weld pool depth, which is due to the electrical
conductivity of the mixture that increases significantly when argon is
added to helium.
[1] W.H. Kim, and S.J. Na, "Heat and fluid flow in pulsed current GTA
weld pool", in Int. J. Heat Mass Tran., 1998, vol 41, pp. 3213-3227.
[2] H.G. Fan, H.L. Tsai, and S.J. Na, "Heat transfer and fluid flow in a
partially or fully", in Int. J. Heat Mass Tran., 2001, vol 44, pp. 417-428.
[3] F. Lu, S. Yao, S. Lou, and Y. Li, "Modeling and finite element analysis
on GTAW arc and weld pool", in Comput. Mater. Sci., 2004, vol 29, pp.
371-378.
[4] A. Traidia, F. Roger, and E. Guyot, "Optimal parameters for pulsed gas
tungsten arc welding in partially", in Int. J. Therm. Sci., 2010, vol 49,
pp. 1197-1208.
[5] M. Tanaka, and J.J. Lowke, "Predictions of weld pool profiles using
plasma physics", in J. Phys. D: Appl. Phys., 2007, vol 40, pp. R1-R23.
[6] A.B. Murphy, M. Tanaka, S. Tashiro, T. Sato, and J.J. Lowke, "A
computational investigation of the effectiveness of different shielding
gas mixtures for arc", in J. Phys. D: Appl. Phys., 2009, vol 42, 115205.
[7] A.B. Murphy et al, "Modeling of thermal plasmas for arc welding_ the
role of the shielding gas properties and of metal vapour ", in J. Phys. D:
Appl. Phys., 2009, vol 42, 194006.
[8] P. Sahoo, T. DebRoy, M.T. McNallan, "Surface tension of binary metal
surface active solute systems under conditions relevant to welding
metallurgy", in Metall. Trans. B., 1988, vol 19B, pp. 483-491.
[9] F. Lago, JJ. Gonzalez, P. Freton, and A. Gleizes. "A numerical
modelling of an electric arc and its interaction with the anode: Part I.
The two-dimensional model", 2004, in J. Phys. D: Appl. Phys. Vol 37,
pp. 883-897.
[10] JJ. Gonzalez, F. Lago, P. Freton, M. Masquère, and X. Franceries. "A
numerical modelling of an electric arc and its interaction with the
anode: Part II. The three-dimensional model- influence of external forces
on the arc column", 2005, in J. Phys. D: Appl. Phys, vol 38, pp. 306-
318.
[11] J. Goldak, M. Bibby, J. Moore, and B. Patel, "Computer modeling of
heat flow in welds", in Metall. Trans B. 1986, vol 17, pp. 587-600.
[12] A.B. Murphy, "Transport coefficients of Helium and Argon-Helium
plasmas", in IEEE Transactions on plasma science, 1997, vol. 25, n┬░ 5.
[1] W.H. Kim, and S.J. Na, "Heat and fluid flow in pulsed current GTA
weld pool", in Int. J. Heat Mass Tran., 1998, vol 41, pp. 3213-3227.
[2] H.G. Fan, H.L. Tsai, and S.J. Na, "Heat transfer and fluid flow in a
partially or fully", in Int. J. Heat Mass Tran., 2001, vol 44, pp. 417-428.
[3] F. Lu, S. Yao, S. Lou, and Y. Li, "Modeling and finite element analysis
on GTAW arc and weld pool", in Comput. Mater. Sci., 2004, vol 29, pp.
371-378.
[4] A. Traidia, F. Roger, and E. Guyot, "Optimal parameters for pulsed gas
tungsten arc welding in partially", in Int. J. Therm. Sci., 2010, vol 49,
pp. 1197-1208.
[5] M. Tanaka, and J.J. Lowke, "Predictions of weld pool profiles using
plasma physics", in J. Phys. D: Appl. Phys., 2007, vol 40, pp. R1-R23.
[6] A.B. Murphy, M. Tanaka, S. Tashiro, T. Sato, and J.J. Lowke, "A
computational investigation of the effectiveness of different shielding
gas mixtures for arc", in J. Phys. D: Appl. Phys., 2009, vol 42, 115205.
[7] A.B. Murphy et al, "Modeling of thermal plasmas for arc welding_ the
role of the shielding gas properties and of metal vapour ", in J. Phys. D:
Appl. Phys., 2009, vol 42, 194006.
[8] P. Sahoo, T. DebRoy, M.T. McNallan, "Surface tension of binary metal
surface active solute systems under conditions relevant to welding
metallurgy", in Metall. Trans. B., 1988, vol 19B, pp. 483-491.
[9] F. Lago, JJ. Gonzalez, P. Freton, and A. Gleizes. "A numerical
modelling of an electric arc and its interaction with the anode: Part I.
The two-dimensional model", 2004, in J. Phys. D: Appl. Phys. Vol 37,
pp. 883-897.
[10] JJ. Gonzalez, F. Lago, P. Freton, M. Masquère, and X. Franceries. "A
numerical modelling of an electric arc and its interaction with the
anode: Part II. The three-dimensional model- influence of external forces
on the arc column", 2005, in J. Phys. D: Appl. Phys, vol 38, pp. 306-
318.
[11] J. Goldak, M. Bibby, J. Moore, and B. Patel, "Computer modeling of
heat flow in welds", in Metall. Trans B. 1986, vol 17, pp. 587-600.
[12] A.B. Murphy, "Transport coefficients of Helium and Argon-Helium
plasmas", in IEEE Transactions on plasma science, 1997, vol. 25, n┬░ 5.
@article{"International Journal of Mechanical, Industrial and Aerospace Sciences:53866", author = "A. Traidia and F. Roger and A. Chidley and J. Schroeder and T. Marlaud", title = "Effect of Helium-Argon Mixtures on the Heat Transfer and Fluid Flow in Gas Tungsten Arc Welding", abstract = "A transient finite element model has been developed
to study the heat transfer and fluid flow during spot Gas Tungsten
Arc Welding (GTAW) on stainless steel. Temperature field, fluid
velocity and electromagnetic fields are computed inside the cathode,
arc-plasma and anode using a unified MHD formulation. The
developed model is then used to study the influence of different
helium-argon gas mixtures on both the energy transferred to the
workpiece and the time evolution of the weld pool dimensions. It is
found that the addition of helium to argon increases the heat flux
density on the weld axis by a factor that can reach 6.5. This induces
an increase in the weld pool depth by a factor of 3. It is also found
that the addition of only 10% of argon to helium decreases
considerably the weld pool depth, which is due to the electrical
conductivity of the mixture that increases significantly when argon is
added to helium.", keywords = "GTAW, Thermal plasmas, Fluid flow, Marangoni
effect, Shielding Gases.", volume = "5", number = "1", pages = "58-6", }