Correlation between Welding Parameters and Detaching Drop Size using Regression

회귀 분석을 이용한 용접 변수와 이탈 액적 크기의 상호 관계

  • 최상균 (경북대학교 공과대학 기계공학부) ;
  • 한창우 (경북대학교 공과대학 기계공학부) ;
  • 이상룡 (경북대학교 공과대학 기계공학부) ;
  • 이영문 (경북대학교 공과대학 기계공학부)
  • Published : 2002.02.01

Abstract

Metal Transfer in gas metal arc (GMA) welding is a complex phenomenon affected by many parameters of the welding conditions and material properties. In this research, the correlation equation between the welding condition and detaching droplet size and detaching velocity in GMA welding was studied via recession analysis on the results of numerical analysis using the volume-of-fluid (VOF) method. Welding parameters and material properties were grouped into three dimensionless numbers and detaching droplet size was expressed as the function of them. Second order and exponential multi-variable correlation forms were assumed, and the coefficients of these equations were calculated for globular and spray modes as well as entire transfer modes. Applying correlation equation into available experimental data, it shows good agreement.

Keywords

References

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