Journal of Korea Foundry Society (한국주조공학회지)

Korea Foundry Society (한국주조공학회)
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Effect of Critical Cooling Rate for Minimization of Porosity in the Thick Aluminum Casting

후육 Al 주조재의 기포결함 최소화를 위한 임계냉각속도의 영향

  • Kwak, Si-Young (Cyber Manufacturing Process Group, Korea Institute of Industrial Technology (KITECH)) ;
  • Cho, In-Sung (Cyber Manufacturing Process Group, Korea Institute of Industrial Technology (KITECH)) ;
  • Kim, Yong-Hyun (Daeshin Metals. Co., Ltd.) ;
  • Lee, Hee-Kwon (Daeshin Metals. Co., Ltd.)
  • 곽시영 (한국생산기술연구원 사이버제조공정그룹) ;
  • 조인성 (한국생산기술연구원 사이버제조공정그룹) ;
  • 김용현 ((주)대신금속) ;
  • 이희권 ((주)대신금속)
  • Received : 2017.08.04
  • Accepted : 2017.11.21
  • Published : 2017.12.31
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Abstract

In the present study, the effect of cooling rate on the formation of the porosity in the thick aluminum sand casting was investigated. Nowadays, due to considerations of weight and cost reduction, large scale thick aluminum casting has replaces steel frames for vacuum chambers for semiconductor production. Several thick aluminum castings were manufactured using chill with temperature measurements. The castings were inspected using 3D computed tomography in order to quantify the porosity defect density in the castings. Effects of the thickness of the chill on the porosity defect density were discussed.

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References

  1. Kim YH, Project supported by the Ministry of Trade, Industry and Energy (MOTIE, Korea) "Development of large-scale high-quality aluminum sand casting technology", (2016-2018).
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