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LIBS Analysis on Magnetic Force of Dissimilar Material Using SMAW

이종재료의 피복아크 용접에서 자기력에 따른 LIBS 해석

  • Lee, Chul Ku (Dept. of Mechanical and Automotive Engineering, Seoul National University of Science and Technology) ;
  • Lee, Wooram (Dept. of Mechanical and Automotive Engineering, Seoul National University of Science and Technology)
  • 이철구 (서울과학기술대학교 기계.자동차공학과) ;
  • 이우람 (서울과학기술대학교 기계.자동차공학과)
  • Received : 2013.06.28
  • Accepted : 2013.08.12
  • Published : 2013.08.31

Abstract

This paper reports mild steel(SPHC) and stainless steel(STS304) sheets commonly used for railroad cars or commercial vehicles such as in the automobile and shipbuilding industries. The sheets are used in these applications, which are mainly fabricated using the shielded metal arc welding(SMAW) of dissimilar materials. It also reports an interesting application of Laser Induced Breakdown Spectroscopy(LIBS) in order to determine the elemental composition diffusion of SPHC and STS304. Arc blow produced by magnetic force during the electric arc welding prevents the formation from a sound weldment. In particular, the mechanical properties of the joint are influenced by not only by geometrical and mechanical factors but also the welding conditions for the arc welded joint. Therefore, the mechanical properties and performance are evaluated by performing a physicochemical component analysis. And they increase in accordance with content of elements and microstructure in mild steel. As results, appropriate range for magnetic fields could be achieved. Therefore, the effect of magnetic force in a butt weld of mild steel plates was investigated by comparing to the measured data.

Keywords

Acknowledgement

Supported by : 한국연구재단

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