Effect of S on Arc Stability of MAG Welding

MAG용접의 Arc안정성에 미치는 S의 영향

  • 안영호 (POSCO 기술연구소 후판연구팀) ;
  • 이종봉 (POSCO 기술연구소 후판연구팀) ;
  • 엄동석 (부산대학교 조선해양공학과)
  • Published : 1999.02.01


The effect of S content in welding wires on the arc stability was investigated, in the region of short circuit transfer and spray transfer. In the region of short circuit transfer, with increasing S content, average arcing time and average short circuit time were decreased. Therefore, droplet transfer frequency was increased, due to the reduction of arcing time and peak current at the moment of arc-reiginition was decreased, due to the decrease of short circuit time. In the region of spray transfer, the fluctuation degree of arc current and arc voltage became more stable, with increasing S content.


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