Journal of the Korean Society of Manufacturing Process Engineers (한국기계가공학회지)

The Korean Society of Manufacturing Process Engineers (한국기계가공학회)
권호 표지

Study of Weld Part Status Change by $CO_2$ Welding According to the Variation of Gas Composition and Welding Wire on SS400 Material

가스성분 및 용접와이어의 변화에 따른 SS400소재의 $CO_2$용접에서 용접부의 상태변화 고찰

  • 김법헌 (한국폴리텍VII대학 산업설비자동화과) ;
  • 김원일 (경남대학교 기계공학부) ;
  • 최창 (한국폴리텍Vii대학 산업설비과) ;
  • 박용환 (고려용접봉 기술연구소)
  • Published : 2012.10.31
⟨ Previous Next ⟩

Abstract

On this study, $CO_2$ gas, net of Ar gas, and mixed gas in solid wire(AWS ER 70S-6) and flux cored wire(AWS E71T-1) were used to weld on Mild steel(SS400). After the progress, the status changes of the welds in Mild steel(SS400) were investigated with compositional changes. For stable experiments, welding was conducted using the automatic feeder. Radiation testing, hardness testing, chemical composition analysis and penetrated cross-section were measured. Through these experiments, shapes of penetrated cross-section, chemical composition changes, and weld defects according to the variation of welding gas were known. Weld defects and weld cross-sectional shapes by the variation of the welding voltage were also detected.

Keywords

References

  1. Kim, D. S., "Welding on Ship Building and Offshore Structure", Journal of the Korea Welding Society, Vol. 20, No. 5, pp. 1-6, 2002.
  2. Kang, B. Y. and Kim, H. J., "Effect of Metal Transfer Mode on Spatter Generation of $CO_{2}$ Welding", Journal of the Korea Welding Society, Vol. 15, No. 2, pp. 72-80, 1997.
  3. Kim, K. J. and Park, K. H., "Study on the Addition and the Transfer of Alloying Elements in FCAW", Journal of the Korea Welding Society, Vol. 1, No. 2, pp. 76-82, 1983.
  4. Han, J. M., Lee, E. B., Ahn, S. C. and Han, Y. S., "Effect of Root Gaps on Toughness of FCAW Weld Metal", Journal of the Korea Welding Society, Vol. 9, No. 4, pp. 40-49, 1991.