Proceedings of the Korean Society for Technology of Plasticity Conference (한국소성가공학회:학술대회논문집)
- 2008.10a
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- Pages.281-285
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- 2008
Development of Multi-layer Bellows using Ferritic Stainless Steel
페라이트계 스테인리스강을 사용한 다층형 벨로우즈 개발
- Suh, C.H. ;
- Oh, S.K. ;
- Jung, Y.C. ;
- Choi, J.Y. ;
- Park, M.K. ;
- Kim, Y.S.
- 서창희 (대구기계부품연구원 기계부품소재시험평가센터) ;
- 오상균 (대구기계부품연구원 기계부품소재시험평가센터) ;
- 정윤철 (대구기계부품연구원 기계부품소재시험평가센터) ;
- 최진영 (정도정밀) ;
- 박명규 (영남이공대학 기계과) ;
- 김영석 (경북대학교 기계공학과)
- Published : 2008.10.09
Abstract
Ferritic stainless steel is used for parts of exhaust system of commercial vehicle, because it has such advantages as low price and high corrosion resistant compared with austenite stainless steel. Even though ferritic stainless steel has these merits, to manufacture multi-layer bellows with complex geometry, austenite stainless steel is being used in the industry, because of it's high ductility. However, recently, the mechanical property of the ferritic stainless is getting improved and alternating austenitic stainless steel. In this paper, the possibility of mass production of bellows made of ferritic stainless steel like MH1 and 443CT is studied. Tensile test and ridging test are carried out to observe mechanical properties of STS304, MH1 and 443CT. Forming analysis using FEM is performed to investigate plastic strain during forming process. Prototype bellows has been made using STS304, MH1 and 443CT, respectively, and fatigue tests are carried out to evaluate fatigue life of bellows.