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

The Korean Society of Mechanical Engineers (대한기계학회)
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FE Simulation of Extrusion Process for Al Multi Cell Tube According to the Changes of the Porthole Shape

포트홀 형상 변화를 고려한 Al 멀티셀 튜브 압출공정 해석

  • 이정민 (부산대학교 대학원 정밀기계공학과) ;
  • 김동환 (진주국제대학교 자동차공학부) ;
  • 조형호 (한국생산기술원 나노소재개발팀) ;
  • 김병민 (부산대학교 정밀정형 및 금형가공연구소)
  • Published : 2005.08.01
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Abstract

Recently, multi cell tube which is used for a cooling system of automobiles is mainly manufactured by the conform extrusion but this method is inferior as compared with direct extrusion in productivity per the unit time and in the equipment investment. Therefore, it is essential for the conversion of direct extrusion with porthole die. The direct extrusion with porthole die can produce multi cell tube which has the competitive power in costs and qualities compared with the existing conform extrusion. This study is designed to evaluate metal flow, welding pressure, extrusion load, tendency of mandrel deflection that is affected by variation of porthole shape in porthole die. Estimation is carried out using finite element method under the non-steady state. Also this study was examined into the cause of mandrel fracture through investigating elastic deformation of mandrel during the extrusion.

Keywords

References

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