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

Korean Society of Ocean Engineers (한국해양공학회)
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A Study on Corrosive Characteristics of Inconel 625 for Petroleum Application by FCAW Process

석유시추용 인코넬 625강의 FCAW용접에 의한 부식성에 관한 연구

  • PARK KEYUNG-DONG (Pukyoung National University DEPT. of Mechanical Engineering) ;
  • AN DO-KEYUNG (Pukyoung National University DEPT. of Mechanical Engineering) ;
  • AN JAE-PIL (Pukyoung National University DEPT. of Mechanical Engineering)
  • 박경동 (부경대학교 기계공학부) ;
  • 안도경 (부경대학교 기계공학부 대학원) ;
  • 안재필 (부경대학교 기계공학부 대학원)
  • Published : 2004.05.01
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Abstract

Recently, Inconel 625 is used widely in offshore processing piping in order to extend the maintenance tenn and improve the quality of anti-corrosion. According to the resistance to attack in various corrosive media at temperatures from $200^{\circ}C$ to aver $1090^{\circ}C$, in combination with good low- and high-temperature mechanical strength. In general, High quality weldments for this material are readily produced by commonly used processes. in recent years, the flux cored arc welding(FCAW) process is becoming more popular due to higher deposition rate and a better weld quality as compared to the shielded metal arc welding (SMAW) process, at the same time, exhibiting equally good weld metal toughness similar to the SAW process. In this study, the weldability and weldment characteristics(mechanical properties and corrosive environment) of Inconel 625 are considered in FCAW weld associated with the several weld shielding gases($80\%Ar\;+\;20\%\;CO_2,\;50\%Ar\;+\;50\%\;CO_2,\;100\%\;CO_2$) in viewpoint of welding productivity.

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