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Analysis of Dynamic Characteristics of Molten Drop and Pulse Condition in Pulsed-GMAW  

최상균 (경북대학교 공과대학 기계공학부)
강세령 (경북대학교 공과대학 기계공학부)
이상룡 (경북대학교 공과대학 기계공학부)
Publication Information
Journal of Welding and Joining / v.20, no.4, 2002 , pp. 491-497 More about this Journal
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.
Keywords
Pulsed-GMAW; Metal transfer; Drop detachment; Volume of fluid algorithm;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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