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Optimization of Casting Design for Automobile Transmission Gear Housing by 3D Filling and Solidification Simulation in Local Squeeze Diecasting Process

국부가압 다이캐스팅 공정에서 3차원 유동 및 응고해석을 통한 자동차 변속기 Gear Housing의 주조방안 설계 최적화

  • Park, Jin-Young (Dept. of Material Engineering, Pusan National University) ;
  • Kim, Eok-Soo (Pusan R&D Center, Korea Institute of Industrial Technology) ;
  • Park, Yong-Ho (Dept. of Material Engineering, Pusan National University) ;
  • Park, Ik-Min (Dept. of Material Engineering, Pusan National University)
  • Published : 2006.11.27

Abstract

In the partial squeeze casting process, the filling behavior of liquid metal and solidification pattern in thick area have significant influence on the quality of casting products and die life. For the optimal casting design of automobile transmission gear housing, various analyses were performed in this study by using computer simulation code, MAGMAsoft and the simulation results were compared and analyzed with experimental results. By air pressure criteria, internal porosities caused by air entrap during the mold filling were predicted and reduced remarkably by modification of gating system. Also, optimal squeeze-time lag to apply partial squeeze pin in thick area was calculated and the castings was free from shrinkage defects with the result of solidification analysis. Consequently, casting design for automobile transmission gear housing was optimized and approved by Computer Tomography.

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Cited by

  1. Difference in Solidification Process between Al-Mg Alloy and Al-Si Alloy in Die-Casting vol.22, pp.2, 2012, https://doi.org/10.3740/MRSK.2012.22.2.82