Proceedings of the Korean Society for Technology of Plasticity Conference (한국소성가공학회:학술대회논문집)
- 2007.05a
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- Pages.332-335
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- 2007
Process design of superplastic forming/diffusion bonding by using pressure control
압력제어를 이용한 초소성 성형/확산접합의 공정설계
- Song, J.S. ;
- Kang, K.Y. ;
- Hong, S.S. ;
- Kwon, Y.N. ;
- Lee, J.H. ;
- Kim, Y.H.
- 송재선 (충남대학교 대학원, BK21 메카트로닉스사업단) ;
- 강영길 (국방과학연구소) ;
- 홍성석 (국방과학연구소) ;
- 권용남 (한국기계연구원) ;
- 이정환 (한국기계연구원) ;
- 김용환 (충남대학교, BK21 메카트로닉스사업단)
- Published : 2007.05.10
Abstract
The superplastic forming (SPF) has been widely used in the automotive and aerospace industry because it has great advantages to produce very light and strong components. Finite element method (FEM) is used to model the process of superplastic forming/diffusion bonding (SPF/DB), to predict the pressure-time curve and to analyze the process parameter. In this study, process design of SPF/DB is carried out a 3-sheet sandwich part. SPF/DB process with pressure control was analyzed by using finite element method. For obtaining proper shape, step-by-step pressurization is proposed. The first step of SPD/DB process is obtained by applying of pressure in patches. From the next step it applied pressure to all regions (between inner sheets, between inner and face sheets). By using the proposed pressurization scheme, deficit in part shape is found to be eliminated.
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