Study of Additional Compensation Shielding Gas Technique for Pulsed MIG Seam Welding

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This paper proposes a novel additional compensation shielding gas technique for seam welding as a method to overcome weld defects caused by atmospheric exposure of high-temperature solid and liquid state welding seams. This technique can be used to appropriately modify the existing pulsed MIG welding system through the addition of a gas control branch channel, allowing for control of compensation shielding gas flow to the system. A plate overlay experiment was carried out with 18-8 austenitic stainless steel base metal and a modified pulsed MIG welder with a modified a gas control branch channel. The results suggest that this technique can be used to meliorate weld defects, improve welding seam shape and enhance welding efficiency.

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173-178

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August 2016

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© 2016 Trans Tech Publications Ltd. All Rights Reserved

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[1] S. Y. Yin, Fundamental Processes and Application of Gas Shielded Arc Welding, China Machine Press, September 2012 Edition.

Google Scholar

[2] J. C. Wang, H. J. Xu, J. Q. Jiao, et al. Study on Double-layer Gas Shielded Arc Welding, J. Dalian Railway Inst. 9 (1992) 88-93.

Google Scholar

[3] M. Suban, J. Tušek, Dependence of melting rate in MIG/MAG welding on the type of shielding gas used, J. Mater. Pro. Tech. 119(1-3) (2001) 185-192.

DOI: 10.1016/s0924-0136(01)00940-2

Google Scholar

[4] L. Sansonnens, J. Haidar, J. J. Lowke, et al. Prediction of Properties of Free Burning Arcs Including Effects of Ambipolar Diffusion, Physics D: Appl. Phys. 33(2) (2000) 148-157.

DOI: 10.1088/0022-3727/33/2/309

Google Scholar

[5] U. Masao, D. Fan, T. Manabu, Contribution of Arc Plasma Radiation Energy to Electrodes, T. Joining and Welding Res. Inst. 22(2) (1993) 201-207.

Google Scholar

[6] H. X. Wang, X. Chen, A Numerical Simulation on Unsteady Heat Transfer and Flow in a Molten Pool, J. Therm. Sci. Technol. 1(1) (2002) 42-45.

Google Scholar

[7] L. Quintino, O. Liskevich, L. Vilarinho, A. Scotti, Heat input in full penetration welds in gas metal arc welding (GMAW), Int. J. Adv. Manuf. Technol. 68(9-12) (2013) 2833-2840.

DOI: 10.1007/s00170-013-4862-8

Google Scholar

[8] M. X. Yang, B. X. Cong, B. J. Qi, et al. Influence of Pulse Current Parameters on Electric Arc Behavior of Austenitic Stainless Steel, T. China Weld. Inst. 10 (2012) 67-70.

Google Scholar