Plasma spot welding of ferritic stainless steels

Authors

  • A. Lešnjak Welding Institute. Ljubljana
  • J. Tušek Welding Institute. Ljubljana

DOI:

https://doi.org/10.3989/revmetalm.2002.v38.i3.403

Keywords:

Plasma spot welding, Ferritic stainless steel, Shielding gas, Plasma gas, Overlap joint,

Abstract


Plasma spot welding of ferritic stainless steels is studied. The study was focused on welding parameters, plasma and shielding gases and the optimum welding equipment. Plasma-spot welded overlap joints on a 0.8 mm thick ferritic stainless steel sheet were subjected to a visual examination and mechanical testing in terms of tension-shear strength. Several macro specimens were prepared. Plasma spot welding is suitable to use the same gas as shielding gas and as plasma gas, i.e., a 98 % Ar/2 % H 2 gas mixture. Tension-shear strength of plasma-spot welded joints was compared to that of resistance-spot welded joints. It was found that the resistance welded joints withstand a somewhat stronger load than the plasma welded joints due to a larger weld spot diameter of the former. Strength of both types of welded joints is approximately the same.

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Published

2002-06-30

How to Cite

Lešnjak, A., & Tušek, J. (2002). Plasma spot welding of ferritic stainless steels. Revista De Metalurgia, 38(3), 210–219. https://doi.org/10.3989/revmetalm.2002.v38.i3.403

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Section

Articles