Transactions of Materials Processing (소성∙가공)

The Korean Society for Technology of Plasticity and materials processing (한국소성∙가공학회)
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Friction Characteristics on the Sheet Metal Blanking of Leadframe

리드 프레임 블랭킹 공정의 마찰특성에 관한 연구

  • 고대철 (부산대학교 동남권부품소재산학협력혁신연구소) ;
  • 김동환 (진주국제대학교 자동차공학과) ;
  • 김문경 (창원전문대학 자동차기계계열) ;
  • 김병민 (부산대학교 정밀정형 및 금형가공 연구소)
  • Published : 2006.09.01
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Abstract

IC leadframe needs precision shape for good efficiency. Friction conditions also have a significant impact on blanking deformation. Therefore, studying the friction produced by the tribology between die and materials becomes necessary. In this study, in order to measure mechanical properties and frictions for leadframe materials such as Ni alloys and coppers, tensile test and straight pulling friction test are executed. In particular, the effect of clearance on the blanking characteristics depending on friction coefficient is examined by finite element simulation. From the finite element simulation, the metal flow, side pressure of punch and crack initiation are evaluated according to the leadframe materials.

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References

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