Transactions of Materials Processing (소성∙가공)

The Korean Society for Technology of Plasticity and materials processing (한국소성∙가공학회)
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Density Improvement of Sintered Preforms by the Cold Rotary Forging

냉간 회전성형법에 의한 분말성형체의 고밀도화 연구

  • 윤덕재 (한국생산기술연구원 소성기술연구팀) ;
  • 임성주 (한국생산기술연구원 소성기술연구팀) ;
  • 최석우 (한국생산기술연구원 소성기술연구팀) ;
  • 나경환 (한국생산기술연구원 소성기술연구팀)
  • Published : 1998.10.01
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Abstract

This study is concerned with cold repressing of sintered preforms by the rotary forging process. An experiment has been carried out using the rotary powder forging press(500kN) which was designed and constructed in the authors' laboratory. The effect of process variables and aspect ration of sintered preform on the densification behavior during the rotary repressing was studied by several mechanical test such as working force hardness distribution density and microstructures of the specimens. Since a higher densification can be achieved by applying the rotary repressing on presinted preforms it was successively demonstrated that the cold rotary powder forging is an effective operation to improve quality of P/M parts.

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