Development of Estimation Model Are Stability Considering Arc Extinction with Multiple Regression Analysis in $CO_2$ Arc Welding

$CO_2$ 아크 용접에 있어서 다중회귀분석에 의한 아크 끊어짐을 고려한 아크 안정성 예측 모델 개발

  • Published : 2000.08.01


Welding quality is closely related to the arc state. So, it is very important to estimate the arc state in real time. In the short circuit transfer region of CO2 are welding, the spatter , as it is well known, is mainly generated on an instance of short circuit or on an instance that the are is ignited after short circuit, or on the cases of an instantaneous short circuit. If the short circuit period or the arc time is irregular, the spatter is generated more than it is regular. Thus there is a close relationship of the amount of the spatter generation with the arc stability. In this paper, to develop the index for estimating the arc stability in short circuit transfer range Of CO2 arc welding, the welding current and are voltage waveforms were measured and the spatter generated was captured and measured. The correlation analysis of the measured amount of the spatter with the factors (the components and the standard deviations of the components) was performed, and the factors that have a considerable influence on the spatter generation among all factors were selected. And some cases of models consisted of the factors were presented, and a mathematical index model which can make an estimation the amount of the spatter from these models with multiple regression analysis. Also, it was compared how much the amount of the spatter generated under the selected welding conditions do these index models fit, and the index model to estimate the arc stability which represent the spatter generation most appropriately was developed


$CO_2$Arc Welding;Arc Stability;Amount of Generated Spatter;Standard Deviation;Multiple Regression Aanalysis;Arc Extinction


  1. 원윤재, 부광석, 조형석, 1990, 'GMAW 공정에서 아크 안정성의 실시간 측정,' 대한용접학회지, 제 8 권, 제 1 호, pp. 31-42
  2. 강성구, 문형순, 나석주, 1997, '스패터 양을 이용한 아크 안정성 판별에 관한 연구,' 대한용접학회지, 제 15 권, 제 6 호, pp. 527-534
  3. Mita, T., Sakabe, A. and Yokoo, T., 1988, 'Quantitative Estimates of Arc Stability for $CO_2$ Gas Shielded Arc Welding,' Welding International, No. 2, pp. 152-159
  4. Shinida, T. and Nishikawa, H., 1995, 'Monitoring and Signal Processing of Short Circuiting Metal Transfer of Metal Active Gas Welding Process,' Proceedings of the Int. Conf. On the Joining of Materials, JOM-7, May 31-June 2, Helsingor, Denmark, pp. 558-565
  5. Rehfeldt, D., Bollmann, A., Korbe, T., Kost N. and Rostek, W., 1991, 'Computer-Aided Quality Control by Process Analyzing Monitoring and Documentation,' Proceedings of the Int. Conf. On the Joining of Materials, JOM-5, May 10-12, Helsingor, Denmark, pp. 11-16
  6. Ogunbiyi, B. and Norrish, J., 1996, 'GMAW Metal Transfer and Arc Stability Assessment Using Monitoring Indices,' Computer Technology in Welding, Six International Conference, Lanaken, Belgium, 9-12 June
  7. Arai, T., Kobayashi, T., Yamada, T., Rokujyo, M., Hirakoso, K. and Kaneko, T., 1983, 'The Investigation for Arc Phenomena by Means of a Computer,' Quarterly Journal of the Japan Welding Society, Vol. 1, No. 3, pp. 15-20
  8. Lucas, W., 1987, 'Microcomputer System, Software and Expert System for Welding Engineering,' Welding Journal, Vol. 66, No. 4, pp. 19-30