Journal of the Korean Society for Precision Engineering (한국정밀공학회지)

Korean Society for Precision Engineering (한국정밀공학회)
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A Study on the Production of a Compressor Piston for an Automobile Air-Conditioner using Aluminum casting/Forging

알루미늄 주조/단조 공정을 이용한 자동차용 에어컨 컴프레서 피스톤의 생산에 관한 연구

  • Lee, Sung-Mo (Dept.of Precision Mechanical Engineering, Graduate School of Busan National University) ;
  • Wang, Shin-Il (Dept.of Precision Mechanical Engineering, Graduate School of Busan National University) ;
  • Kim, Hyo-Ryang (Dept.of Precision Mechanical Engineering, Graduate School of Busan National University) ;
  • Bae, Won-Byong (School of Mechanical Engineering, Pusan National Uinversity)
  • 이성모 (부산대학교 대학원 정밀기계공학과) ;
  • 왕신일 (부산대학교 대학원 정밀기계공학과) ;
  • 김효량 (부산대학교 대학원 정밀기계공학과) ;
  • 배원병 (부산대학교 공과대학 기계공학부)
  • Published : 2000.08.01
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Abstract

In this study aluminum casting experiments are carried out to reduce the grain size of a cast preform and to spheriodize its dendritic structure by adding Ti+B and Zr and to modify flaked eutectic silicon by adding Sr, And a finite element simulation is performed to determine an optimal configuration of the cast preform to be used in forging of a compressor piston for an automobile air-conditioner. When 0.15% Ti+B Zr and 0.05% Sr are added respectively into the molten aluminum alloy the finest grain in casting of the preform is obtained. It is confirmed that the optimal configuration of the cast preform predicted by FEM simulation is very useful for forging the compressor piston. After forging the cast preform of the compressor piston. the microstructure and the hardness of the cast preform is compared with those of the cast/forged product.

Keywords

References

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