Journal of the Korean Society of Industry Convergence (한국산업융합학회 논문집)

The Korean Society of Industry Convergence (한국산업융합학회)
권호 표지

A Study on Dynamic Characteristics of Welding voltage and Welding Current At GMAW

GMA 용접에서 전압과 전류의 동특성에 관한 연구

  • 김면희 (경북대학교 대학원 기계공학과, 구미1대학 차량기계과) ;
  • 최영근 (구미1대학 차량기계과) ;
  • 이문환 (구미1대학 차량기계과)
  • Received : 2001.04.07
  • Accepted : 2001.05.25
  • Published : 2001.05.31
Download PDF
⟨ Previous Next ⟩

Abstract

Welding variables and condition in gas metal arc welding (GMAW) effect on the weld quality and productivity, extensive research efforts have been made to analyze the welding variables and conditions. In this study dynamic behavior of GMAW system is investigated using the chararcteristic equations of the power supply. wire and welding arc. Characteristic equation of wire is modified to include the effect of droplets attached at the electrode tip. The dynamic characteristics of arc length, current, voltage with respect to the step, ramp inputs of CTWD was simulated. From results of simulation, some predictions about dynamic characteristics of GMAW and welding process are available. The proposed simulator and results appear to be utilized to determine the proper welding conditions, to be improved by considering power supply dynamic characteristics.

Keywords