대한기계학회논문집A (Transactions of the Korean Society of Mechanical Engineers A)

  • 제20권7호
  • /
  • Pages.2182-2195
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  • 1996
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  • 1226-4873(pISSN)
  • /
  • 2288-5226(eISSN)
대한기계학회 (The Korean Society of Mechanical Engineers)
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공구강 분말 성형체의 고온 치밀화 성형공정

High Temperature Densification Forming Process of Tool Steel Powder Compact

  • 최학현 (포항공과대학교 대학원) ;
  • 전윤철 (포항공과대학교 대학원) ;
  • 김기태 (포항공과대학교 기계공학과)
  • Choi, Hak-Hyeon (Graduate School of Pohang University of Science and Technology) ;
  • Jeon, Yun-Cheol (Graduate School of Pohang University of Science and Technology) ;
  • Kim, Gi-Tae (Dept. of Mechanical Engineering, Pohang University of Science and Technology)
  • 발행 : 1996.07.01
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초록

Densification characteristics and behavior of tool steel powder compact during high temperature forming processes were investigated under pressure less sintering, sinter forging and hot isostastic pressing. In pressureless sintering, full density was obtained at a closely controlled temperature near the solidus of the material. Finite element calculations from constitutive model for densification by power law creep and diffusional flow were compared with experimental data. Agreements between theoretical calculations and experimental data were good in hot isostatic pressing but not as good in sinter forging.

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