한국소성가공학회:학술대회논문집 (Proceedings of the Korean Society for Technology of Plasticity Conference)
- 한국소성가공학회 2008년도 추계학술대회 논문집
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- Pages.197-198
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- 2008
재료이용율 향상을 위한 피스톤 크라운 성형공정 연구
Study on forming Process of Piston Crown Using Near Net Shaping Technology
- 최호준 (한국생산기술연구원) ;
- 최석우 (한국생산기술연구원) ;
- 윤덕재 (한국생산기술연구원) ;
- 정한수 (한국생산기술연구원) ;
- 최익준 (한국생산기술연구원) ;
- 백동규 ((주)케이에스피) ;
- 최성규 ((주)케이에스피) ;
- 박용복 (공주대학교) ;
- 임성주 (한국생산기술연구원)
- Choi, H.J. ;
- Choi, S. ;
- Yoon, D.J. ;
- Jung, H.S. ;
- Choi, I.J. ;
- Baek, D.K. ;
- Choi, S.K. ;
- Park, Y.B. ;
- Lim, S.J.
- 발행 : 2008.10.09
초록
The forging process produces complicated and designed components in a die at high productivity for mass production and minimizes the machining amount for favorable material utilization; the forging products used at highly stressed sections are well accepted at a wide range of industry such as automobile, aerospace, electric appliance and et cetera. Accordingly, recent R&D activities have been emphasized on improvement of forging die-life and near net shaping technology for cost effectiveness and better performance. Usually closing and consolidation of internal void defects in a ingot is a vital matter when utilized as large forged products. It is important to develop cogging process for improvement of internal soundness without a void defect and cost reduction by solid forging alone with limited press capacity. For experiments of cogging process, hydraulic press with a capacity of 800 ton was used together with a small manipulator which was made for rotation and overlapping of a billet. Size of a void was categorized into two types;