Proceedings of the Korean Society for Technology of Plasticity Conference (한국소성가공학회:학술대회논문집)

The Korean Society for Technology of Plasticity and materials processing (한국소성∙가공학회)
권호 표지

OPTIMAL PREFORM DESGIN BY TRACING THE MATERIAL FLOW : APPLICATION TO PISTON FORGING

  • Hong J.T. (Dept. of Mech. Engng., Korea Advanced Institute Science and Technology) ;
  • Lee S.R. (Dept. of Mech. Engng., Korea Advanced Institute Science and Technology) ;
  • Park C.H. (Dept. of Mech. Engng., Korea Advanced Institute Science and Technology) ;
  • Yang D.Y. (Dept. of Mech. Engng., Korea Advanced Institute Science and Technology) ;
  • Chung W.J. (Dept. of Die and Mold Design, Seoul National University of Technology) ;
  • Park Y.B. (Dept. of Mech. Engng., Kongju National University) ;
  • Kim Y.H. (Dept. of Mech. Design Engng., Chungnam National University)
  • Published : 2003.10.01
Download PDF
⟨ Previous Next ⟩

Abstract

In this paper, a new preform design method is proposed to eliminate the excessive flash in metal forging process. After carrying out finite element simulation of the process with an initial billet, backward particle tracing is performed from the outlet of the flash. Then, the region which belongs to the flash is easily found .. The process is analyzed again with the redesigned billet which is removed that region the above mentioned region. The optimal preform shape which minimizes the amount of flash without changing the forgibility can be obtained in several iterations.

Keywords