Journal of Welding and Joining

  • 제28권4호
  • /
  • Pages.73-80
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  • 2010
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  • 2466-2232(pISSN)
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  • 2466-2100(eISSN)
대한용접접합학회 (The Korean Welding and Joining Society)
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순 Ti 박판 GTA 용접부의 기계적 성질 및 성형성에 미치는 공정변수의 영향

The Effect of Process Variables on Mechanical Properties and Formability in GTA Welds of Commercial Pure Titanium Sheet

  • 김지훈 (부산대학교 재료공학과) ;
  • 홍재근 (한국기계연구원 부설 재료연구소 특수합금연구그룹) ;
  • 염종택 (한국기계연구원 부설 재료연구소 특수합금연구그룹) ;
  • 박노광 (한국기계연구원 부설 재료연구소 특수합금연구그룹) ;
  • 강정윤 (부산대학교 재료공학과)
  • Kim, Jee-Hoon (Department of Materials Science and Engineering, Pusan National University) ;
  • Hong, Jae-Keun (Special Alloys Research Group, Korea Institute of Materials Science) ;
  • Yeom, Jong-Taek (Special Alloys Research Group, Korea Institute of Materials Science) ;
  • Park, Nho-Kwang (Special Alloys Research Group, Korea Institute of Materials Science) ;
  • Kang, Chung-Yun (Department of Materials Science and Engineering, Pusan National University)
  • 투고 : 2010.04.20
  • 심사 : 2010.05.24
  • 발행 : 2010.08.31
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초록

In this work, the effect of welding variables on weldability of gas tungsten arc(GTA) welding was investigated with experimental analysis for a commercial pure(CP) titanium (Grade.1). The GTA welding tests on sheet samples with 0.5mm in thick were carried out at different process variables such as arc length, welding speed and electrode shape. In order to search an optimum arc length with full penetration, bead- on-plate welding before butt-welding were performed with different arc length conditions. From the bead- on-plate welding results, the optimum condition considering arc stability and electrode loss was obtained in the arc length of 0.8mm. Butt-welding tests based on the arc length of 0.8mm were carried out to achieve the optimum conditions of welding speed and electrode shape. Optimum conditions of welding speed and electrode shape were suggested as 10 mm/s and truncated electrode shape, respectively. It was successfully validated by the microstructural observation, tensile tests, micro-hardness tests and formability tests.

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참고문헌

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