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

The Korean Society of Mechanical Engineers (대한기계학회)
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Effect of friction between metal powder and a mandrel on densification during cold isostatic pressing

냉간 정수압 성형시 금속분말과 맨드렐 사이의 마찰이 분말의 치밀화에 미치는 영향

  • Lee, Hui-Tae (Graduate School of Pohang University of Science and Technology) ;
  • Kim, Ki-Tae (Dept. of Mechanical Engineering, Pohang University of Science and Technology)
  • 이희태 (포항공과대학교 대학원) ;
  • 김기태 (포항공과대학교 기계공학과)
  • Published : 1997.07.01
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Abstract

The effects of friction between powder and a mandrel on densification behavior of metal powder were investigated under cold isostatic pressing. The elastoplastic constitutive equations based on the yield function of Shima and Oyane were implemented into finite element program (ABAQUS) to simulate compaction responses of metal powders during cold isostatic pressing. The friction coefficients between powder and mandrels with different roughness were determined by comparing experimental data and finite element results. Density distributions in the powder compacts were also studied for different friction coefficients. Finite element results were compared with experimental data for pure iron powder under cold isostatic pressing.

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