Effects of Wire speed Fluctuation on Arc Stability in GMA Welding

GMAW에서 와이어 송급속도의 변동이 아크안정성에 미치는 영향에 관한 연구

  • 신현욱 (하나정공) ;
  • 최용범 (명지대학교 기계공학과 대학원) ;
  • 성원호 (명지대학교 기계공학과 대학원) ;
  • 장희석 (명지대학교 기계공학과)
  • Published : 1995.12.01


Weld quality of GMA welding processes is closely related to arc stability. Although many researches on arc stability have been performed, real-time estimation of arc stability has not been attempted. For instance, Mita proposed a off-line statistical method in which short circuiting and arcing time, and voltage and current wave forms were sampled to assess arc stability. But this method is not suitable to assess arc stability for GMA welder which employ inverter power source due to its controlled current and voltage wave forms. In this paper, the relationship between are stability and wire feed rate fluctuation is analyzed to propose new criterion for inverter power source. When arc voltage and arc current and arcing time are analyzed, we can assess arc stability only for short circuit transfer mode. When wire feed rate is analyzed, we can estimate arc stability udner the condition of spray transfer mode as well. Hence, the wire feed rate is chosen for monitoring process variable to cover possible metal transfer modes in GMAW. Through this research, it has been identified that arc stability in GMA welding processes is closely related to wire fed rate. When inverter power source is used, conventional statistical method of estimating arc stability, such as Mita index, is no longer valid due to its controlled voltage and current wave forms. Arc stability has been also examined in phase plane diagram.


  1. Welding Handbook AWS
  2. 대한용접학회 춘계학술대회논문집 Recent Trend of Research Activities of MAG Welding in Japan of Preprints Takeshi shinoda
  3. 대한용접학회 추계학술대회논문집 Effect of Ca and S on Droplet Transfer in GMAW 안병호;방국수;이종봉;신병현
  4. 대한용접학회 춘계학술대회논문집 Effects of Ti of Electrodes on Metal Transfer in CO₂Welding 안영호;방국수;최종훈
  5. 대한용접학회지 v.12 no.1 The Trend of Fuzzy-Controlled Welding Machines in Japan 박송춘;라규환
  6. 대한용접학회지 v.12 no.1 Control of Weld Pool Size in GMA Welding Process Using Neural Networks 임태균;조형석;부광석
  7. 한국과학기술원, 정밀공학과 박사학위논문 CO₂가스 아크 용접에서의 아크 안정성을 고려한 용융지 크기 제어에 관한 연구 원윤재
  8. ASME WAM The Measurement of Two-dimensional Arc Weld Pool Geometry by Image Analysis, Measurement and Control for Batch Manufacturing R.D.Richardson;R.W.Richardson
  9. ASME WAM no.Nov. Ultrasonic Measurement of Weld Penetration, Control of Manufacturing Processes and Robotic System J.M.Katz;D.E.Hardt
  10. Trans. of ASME, J. of Dyn. Syst. Meas. and Contr. v.105 no.Sept. Weld Pool Impedence Identification for Size Measurement and Control M.Zecksenhouse;D.E.Hardt
  11. J. of Japan Welding Society v.3 no.3 Back Bead Width Control in One Side SAW Using Flux Copper Backing H.Nomura
  12. 일본용접학회논문집 v.1 no.3 The Investigation of Arc Phenomina by means of a Computer T.Arai(et al.)
  13. Welding Journal no.Apr. Microcomputer Systems, Software and Expert System for Welding Engineering W.Lucas
  14. Welding International no.2 Quantitative Estimates of Arc Stability for CO2 Gas Arc Welding T.Mita(et al.)
  15. Schweissen und Schneiden v.44 no.9 Entwicklung eines Metal Aktivgas Engspalt Schwessverfahrens mit negativer Polung der Drahtelektrode T.Shinoda;H.Ono
  16. J. of Light Metal Welding & Construction v.30 no.12 Prevention of Puckering Using Double Wire MIG Welding Process H.Miyazaki;T.Shinoda