Journal of Welding and Joining

The Korean Welding and Joining Society (대한용접접합학회)
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A Experiment Study of Torch Distance on Automated Tandem GMA Welding System

탄뎀 가스메탈아크 용접의 토치 극간거리에 관한 실험적 연구

  • Lee, Ji-Hye (Dept. of Mechanical Engineering, Mokpo National University) ;
  • Kim, Ill-Soo (Dept. of Mechanical Engineering, Mokpo National University) ;
  • Jung, Seong-Myeong (Dept. of Mechanical Engineering, Mokpo National University) ;
  • Lee, Jong-Pyo (Dept. of Mechanical Engineering, Mokpo National University) ;
  • Kim, Young-Su (Dept. of Mechanical Engineering, Mokpo National University) ;
  • Park, Min-Ho (Dept. of Mechanical Engineering, Mokpo National University)
  • 이지혜 (목포대학교 공과대학 기계공학과) ;
  • 김일수 (목포대학교 공과대학 기계공학과) ;
  • 정성명 (목포대학교 공과대학 기계공학과) ;
  • 이종표 (목포대학교 공과대학 기계공학과) ;
  • 김영수 (목포대학교 공과대학 기계공학과) ;
  • 박민호 (목포대학교 공과대학 기계공학과)
  • Received : 2012.09.11
  • Accepted : 2012.12.18
  • Published : 2012.12.31
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Abstract

The tandem welding process is one of the most efficient welding processes widely used in material joining technique such as manufacturing of strong and durable structures. It facilitates high rate of joint filling with little increase in the overall rate of heat input due to the simultaneous deposition from two electrode wires. The two electrodes in tandem welding process helps in high-efficiency and high productive of welding process. In this study a automated tandem welding system is developed to determine the correlation between cathode and anode and compared with current ratio of the two electrode torch. Three different inter-electrode distances were chosen, 25mm, 35mm and 45mm to perform the experiment with three different current ratio. From the experiment results, the current ratio between two torch has a large impact on width, height and depth of penetration. In addition, a stable bead geometry is obtained when inter-electrode distance is 35mm.

Keywords

References

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