소성∙가공 (Transactions of Materials Processing)
- 제7권5호
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- Pages.426-431
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- 1998
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- 1225-696X(pISSN)
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- 2287-6359(eISSN)
냉간 회전성형법에 의한 분말성형체의 고밀도화 연구
Density Improvement of Sintered Preforms by the Cold Rotary Forging
초록
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.