Transactions of Materials Processing (소성∙가공)

The Korean Society for Technology of Plasticity and materials processing (한국소성∙가공학회)
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Comparative Study on Pore Closing in Open Die Forging by Conventional Forging Press and Radial Forging Machine

일반자유단조 프레스와 방사형 단조 프레스의 기공 압착에 관한 비교 연구

  • 김성현 (경상대학교 대학원 기계공학과) ;
  • 이민철 (경상대학교) ;
  • 장성민 ((사)경상대 수송기계부품기술혁신센터) ;
  • 엄재근 ((사)경상대 수송기계부품기술혁신센터) ;
  • 전만수 (경상대학교 기계항공공학부/항공기부품기술연구소)
  • Received : 2010.08.10
  • Accepted : 2010.09.14
  • Published : 2010.11.01
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Abstract

We propose an analysis model for simulating the detailed procedure of pore closing in open die forging of shafts. In the analysis model, an artificial symmetric plane is used, on which initial pores are located to be traced. The analysis model is employed to carry out three-dimensional simulation of pore closing in shaft free forging by both conventional free forging press and radial forging machine. With this result, two typical types of free forging equipment for manufacture of shafts are compared in detail. It has shown that the radial forging machine is much superior to the conventional open die forging press especially in pore closing under high hydrostatic pressure with sound strain.

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References

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