[KSCI] Korea Science Citation Index Service

Process Design for the Hot Forging of Asymmetric Rail to Symmetric Rail

Cho, Hae-Yong (Department of Mechanical Engineering, Chungbuk National University)
Kim, Yong-Yun (Department of Mechanical Engineering, Chungbuk National University)
Lee, Ki-Joung (LG Industrial Systems Co., Ltd.)
Lee, Sung-Ho (LG Industrial Systems Co., Ltd.)
Oh, Byung-Ki (Graduate School of Mechanical Engineering, Chungbuk National University)
Nam, Gi-Jung (Graduate School of Mechanical Engineering, Chungbuk National University)

Publication Information

Journal of Mechanical Science and Technology / v.18, no.9, 2004 , pp. 1559-1564 More about this Journal

Abstract

The process design of hot forging, asymmetric to symmetric rib-web shaped steel, which is used for the turnout of express rails has been studied. Owing to the great difference in shape between the initial billet and the final forged product, it is impossible to hot forge the rail in a single stage operation. The numerical simulation for hot forging of asymmetric shape to symmetric shape was carried out by using commercial FEM code, DEFORMTM-2D. For comparison with the simulation results, a experiment of flow analysis using plasticine was also carried out. The results of the flow experiment showed good agreement with those of the simulation.

Keywords

Asymmetric; High Speed Rail; Hot Forging; Symmetric; Process Design;

Citations & Related Records

Reference

1	Choi, J. C., Kim, B. M. and Kim, S. W., 1995, 'Computer-Aided Design of Blockers for Rib-Web Type Forgings,' J. of Materials Processing Technology, Vol. 54, pp. 314-321 DOI ScienceOn
2	Doege, E. and Bohnsack, R., 2000, 'Closed Die Technologies for Hot Forging,' J. of Materials Processing Technology, Vol. 98, pp. 165-170 DOI ScienceOn
3	Fujikawa, S., 2000, 'Application of CAE for Hot Forging of Automotive Components,' J. of Materials Processing Technology, Vol. 98, pp.176-181 DOI ScienceOn
4	Guo, Y. M. and Nakanishi, K., 1999, 'A Hot Forging Simulation by the Volumetrically Elastic and Deviatorically Rigid-Plastic Finite-Element Method,' J. of Materials Processing Technology, Vol. 89, pp. 111-116 DOI ScienceOn
5	Qingbin, L. and Zengxiang, F., 1997, 'Coupled Thermo-Mechanical Analysis of the High-Speed Hot-Forging Process,' 1. of Materials Processing Technology, Vol. 69, pp. 190-197 DOI ScienceOn
6	Ward, M. J. and Miller, B. C., 1998, 'Simulation of a Multi-Stage Railway Wheel and Tyre Forming Process,' J. of Materials Processing Technology, Vol. 80-81, pp.206-212 DOI ScienceOn
7	Rodrigues, J. M. C. and Martins, P. A. F., 2002, 'Finite Element Modeling of the Initial Stages of a Hot Forging Cycle,' Finite Element in Analysis and Design, Vol. 38, pp. 295-305 DOI ScienceOn