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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;Kim, Ki-Tae
이희태;김기태

  • Published : 1997.07.01

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.

Keywords

Cold Isostatic Pressing;Densification;Finite Element Analysis;Constitutive EquatltJtl;Friction;Metal Powder