Proceedings of the Korea Committee for Ocean Resources and Engineering Conference (한국해양공학회:학술대회논문집)

Korean Society of Ocean Engineers (한국해양공학회)
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Development of Inconel for Marine Structural Steel by FCAW Process

해양 구조용 인코넬강의 FCAW 용접의 최적기술 개발

  • PARK KEYUNG-DONG (Dept. of Mechanical Engineering, Pukyoung National University) ;
  • JIN YOUNG-BEOM (Division. of Mechanical Engineering, Pukyoung National University) ;
  • AN DO-KEYUNG (Division. of Mechanical Engineering, Pukyoung National University)
  • 박경동 (부경대학교 기계공학부) ;
  • 진영범 (부경대학교 기계공학부 대학원) ;
  • 안도경 (부경대학교 기계공학부 대학원)
  • Published : 2004.11.01
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Abstract

Inconel 625 is useful in variety of industrial applications because of the resistance to attack in various corrosive media at temperatures from $200^{\circ}C$ to aver $1090^{\circ}C$, in combination with good law- and high temperature mechanical strength. Rencently, this material is also used widely in offshore processing piping in order to extend the maintenance term and improve the quality of anti-corrosion. In general, high quality weldments for this material are readily produced by commonly used processes. Not all processes are applicable to this material group, Ni-alloys. Metallurgical characterictics or the unavailability of matching, position or suitable welding processes. Nowadays, the flux cored wire is developed and applied for the better productivity in several welding position including the vertical position. in this study, the weldability and weldment characteristics (mechanical properties) of inconel 625 are considered in FCAW(Flux Core Arc Welding) associated with the several shielding gases($80\%Ar\;+\;20\%CO_2,\;50\%Ar+50CO_2,\;100CO_2$) in viewpoint of welding productivity.

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