A Study on Fatigue Strength of Austenitic Stainless Steel for Centrifuge

원심분리기용 오스테나이트계 스테인리스강의 피로강도에 관한 연구

  • Lee, Mee-Hae (Department of Safety Engineering, Graduate School of Energy & Environment, Seoul National University of Technology) ;
  • Kim, Yong-Soo (Department of Safety Engineering, Graduate School of Energy & Environment, Seoul National University of Technology) ;
  • Park, Joon-Woo (LRQA Korea)
  • 이미해 (서울산업대학교 에너지환경 에너지안전과) ;
  • 김용수 (서울산업대학교 에너지환경 에너지안전과) ;
  • 박준우 (로이드인증원)
  • Published : 2008.06.30

Abstract

For industrial centrifuges, the state of their welding areas, even with a naked-eye observation, offers potential safety problems such as inconsistent bead formation. STS304, which is used mainly in centrifuges, is made of metal alloys with chrome and nickel as the main ingredients, offering excellent corrosion resistance, thermal resistance, and high strength, and thus allowing it to be used for diverse purposes. This paper conducted tensile and fatigue tests of STS304 to improve the safety of centrifuges. In the findings, for the static behavior of the STS304 material, welded specimens increased their yield and tensile strength compared with the base test specimens, but decreased their elongation ratio. Also, the data dispersion phenomenon of welded specimens remarkably increased.

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