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Lab Weldability of Pure Titanium by Nd:YAG Laser

Nd:YAG 레이저를 이용한 순티타늄판의 겹치기 용접성

  • 김종도 (한국해양대학교 기관시스템공학부) ;
  • 곽명섭 (한국해양대학교 대학원)
  • Published : 2008.03.31

Abstract

Titanium and its alloys have excellent corrosion resistance, high strength to weight ratios and creep properties in high temperature, which make them using many various fields of application. Especially, pure titanium, which has outstanding resistance for the stress corrosion cracking, crevice corrosion, pitting and microbiologically influenced corrosion, brings out to the best material for the heat exchanger, ballast tank, desalination facilities, and so on. Responding to these needs, welding processes for titanium are also being used GTAW, GMAW, PAW, EBW, LBW, resistance welding and diffusion bonding, etc. However, titanium is very active and highly susceptible to embrittlement by oxygen, nitrogen, hydrogen and carbon at high temperature, so it needs to shield the weld metal from the air and these gases during welding by non-active gas. In this study, it was possible to get sound beads without humping and spatter with a decrease of peak power according to increase of pulse width, change of welding speed and overlap rate for heat input control, and shield conditions at pulsed laser welding of titanium plates for Lap welding.

Keywords

References

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Cited by

  1. A Study of Weldability for Pure Titanium by Nd:YAG Laser(I) - Weld Properties with Shield Conditions - vol.27, pp.5, 2009, https://doi.org/10.5781/KWJS.2009.27.5.055