Journal of Welding and Joining

The Korean Welding and Joining Society (대한용접접합학회)
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Analysis of Dynamic Characteristics of Molten Drop and Pulse Condition in Pulsed-GMAW

펄스 GMA용접에서 용융 액적의 동특성 및 펄스 조건에 관한 해석

  • 최상균 (경북대학교 공과대학 기계공학부) ;
  • 강세령 (경북대학교 공과대학 기계공학부) ;
  • 이상룡 (경북대학교 공과대학 기계공학부)
  • Published : 2002.08.01
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Abstract

Dynamic behavior of the molten drop during the peak period in the pulsed-GMAW is simulated in this work using the VOF(volume of the fluid) algerian. The dynamic characteristics of molten drop such as minimum radius, average velocity and displacement of mass center were computed as well as the internal pressure and velocity. The minimum and maximum peak durations for detaching a drop were calculated.. The result of Analysis reveals that peak current and volume of pendant drop are important factors which affecting drop detachment. A simplified model of constant acceleration is proposed to describe the behavior of molten drop during peak current, and its results agree with the experimental results.

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References

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