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A Study on the Calculating Method of the Heat Input Efficiency in Arcspot Welding

아크 스폿 용접의 입열효율 계산 방법에 관한 연구

  • 장경복 (삼성중공업(주) 거제조선소 조선플랜트연구소) ;
  • 조상명 (부경대학교 재료공학부 생산가공공학)
  • Published : 2003.07.01

Abstract

In arc spot welding process, the arc is not moving and heat input is concentrated in one spot so that the heat input efficiency of arc is higher than that of GMAW. In other words, the heat input efficiency of arc change during weld time because arc start is done in spot and weld metal is filled. Therefore, the heat input model of arc spot welding should be different from that of general GMAW. In present study, the calculating model of heat input efficiency in arc spot welding was suggested by temperature monitoring near spot in arc spot welding of copper plate. The result showed that the heat input efficiency of arc was changed three times during weld time. The accuracy of calculating method of heat input efficiency was verified by heat transfer analysis of arc spot welding process using finite element method.

Keywords

Arc Spot Welding;Heat Input Efficiency of Arc;Finite Element Analysis;GMAW(Gas Metal Arc Welding)

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