• Title/Summary/Keyword: TIG 용접

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A Study on the Bead Stability in High Speed TIG Welding (고속 TIG 용접의 비드 안정성에 관한 연구)

  • 조상명
    • Journal of Advanced Marine Engineering and Technology
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    • v.18 no.3
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    • pp.68-77
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    • 1994

  • TIG welding process is applied for the active metal such as aluminum and titanium, also sometimes for overlay welding of superalloy. However the welding speed to be applied is very low because of the unstable bead formed in the region of high current and high welding speed. The present study was carried out to examine the basic phenomena of high speed TIG melt run welding by the 2% Th - W electrode(dia.3.2mm) of various tip shapes.

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The Comparison of Characteristic between Electron Beam Welding and Narrow-gap TIG welding with 316LN Stainless Steel (스테인레스강 316LN의 전자빔용접과 협개선TIG 용접특성 비교)

  • Jeong, In-Cheol;Kim, Yong-Jae;Lee, Gyeong-Un;Sim, Deok-Nam
    • Proceedings of the KWS Conference
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    • 2005.06a
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    • pp.82-84
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    • 2005

  • Among the advanced welding processes which are superior to conventional process, Electron beam welding and Narrow-gap TIG welding are most prospective in being applicable for the heavy industry field. With STS316LN, which is high strengthened austenitic stainless steel, the characteristic evaluation for these welding processes was carried out through the mechnical tests and property analyses. For the tensile strength EBW is better while in reverse for the yield strength. In Narrow-gap TIG the distribution of hardness values has some deviation according to the thickness direction while EBW has a tendency of a litter high hardness values in weld metal. After EB welding brings the reduction of nitrogen content, in TIG welding weld metal depends on the contents of welding material. Both processes have almost austenitic structure, but weld metal of EBW is also shown terrific structure

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