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http://dx.doi.org/10.5228/KSPP.2002.11.1.084

A Study on the Forming Characteristics of Radial-Forward Extrusion Process  

황승규 (인하대학교 자동화공학과)
이호용 (동국대학교 기계공학과)
황병복 (인하대학교 기계공학부)
Publication Information
Transactions of Materials Processing / v.11, no.1, 2002 , pp. 84-89 More about this Journal
Abstract
This study is concerned with the analysis of the forming characteristics of radial-forward extrusion. Angle between radial and forward extrusion, gap height, and friction factor are considered as important design factors to affect forming characteristics in radial-forward extrusion. The rigid-plastic finite element method is adopted to analyze the effects of design factors on forming loads. The incremental rates of loads are nearly constant except the deformation zone from radial to forward extrusion. The smaller angle induces lesser force increment, therefore forming load increases as the angle increases. Maximum load also increases as gap-height decreases and friction factor increases.
Keywords
Radial-Forward Extrusion; Rigid-Plastic FEM;
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  • Reference
1 The Materials Information Society, Metals Hand books, Vol. 2 tenth edition, pp.104-105.
2 J. Datsko, 1966, Material Properties and Manufacturing Processes, Malloy Inc., Ann Arbor, Michigan, pp.31-36.
3 Y. S. Chang, 2000, "A study on the Forming Characteristics of Radial Extrusions Combined with Forward Extrusion", Master Dissertation, Inha Graduate School, pp.26-46.
4 박종남, 박태준, 김병민, 2001, “유동제어에 의한 피스톤핀의 전후방압출 공정 개발”, 한국소성가공학회, 압출 및 인발 가공 심포지엄, pp.3-10.
5 S. I. Oh, G. D. Lahoti and T. Altan. 1981, "ALPID- A General Purpose FEM Program for Metal Forming", Proceedings of NAMRC IX, State College, Pennsylvania.
6 R. Geiger, W. Schatzle, 1983, "Basics and Application of radial Extrusion", Fundamentals of Metal Forming Technique-State and Trends, Proceedings of the International Symposium, Stuttgart, West Germany, October 13-14, pp.139-161.
7 S. Kobayashi, S. I. Oh and T. Altan, 1989,Metal Forming and the Finite Element Method, Oxford Univ. Press, pp.8-25.
8 황병복, 이호용, 1994, “유한요소법을 이용한 disk-brake piston의 공정설계”, 한국소성가공학회지, pp.178-188.   과학기술학회마을
9 E. Paul DeGarmo, 1967, Materials and Processes in Manufacturing, Macmillan Pub. Co., Inc., pp.27-34.
10 장동환, 최호준, 이호용, 황병복, 2000, “후방압출과 연계한 레이디얼압출의 성형특성에 관한 연구”, 한국소성학회지, 제9권 7호, pp.754-760.
11 R. Geiger, 1987, "State of the Art and Development Trends in Cold Forging Technology", Proc. of Adv. Tech. of Plasticity Conf., Tokyo, Japan, Vol 1. pp.469-477.
12 S. Kalpakjian, 1992, Manufacturing Processes for Engineering Material, Addison-Wesley Pub. Co., Inc., pp.363-376.
13 Air Force Material Laboratory, 1973, "Forming Equipment, Materials, and Practices", Metal and Ceramics Information Center, p.164.