Process Development of Variable Curvature Extrusion for Automotive Aluminum Bumper

자동차 알루미늄 범퍼의 가변 곡률 압출공정 개발

  • 조영준 (부산대학교 대학원 정밀기계공학과) ;
  • 이상곤 (부산대학교 대학원 정밀기계공학과) ;
  • 오개희 ((주)동양강철 기술연구소) ;
  • 박상우 ((주)동양강철 기술연구소) ;
  • 김병민 (부산대학교 기계공학부)
  • Published : 2008.04.01


The effectiveness of vehicle parts made through extrusion is in the limelight because of the advantages of high strength stiffness materials can be produced and the number of processes can be drastically reduced. Therefore, the parts should have sufficient stiffness and be lightweight enough to improve fuel efficiency. However, the application of extruded aluminum requires pre-bending technologies that can manufacture the complex designs profiles demanded by vehicle parts. The aim of this research is that the development of the variable curvature extrusion technology that can produce a variety of curvature. In order to produce a variable curvature, the guide transfer speed and transfer time should be controlled properly. The guide transfer speed and transfer time were examined by the theoretical analysis. A model was developed to simulate the deformation behaviors of extrusion and bending process from the symmetric bumper with range of radii from 1863mm to 2163mm. The theoretical analysis and FE analysis were verified through experimental method.


Aluminum Extrusion;Variable Curvature;Theoretical Analysis;FE Simulation;Extrusion Experiment


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