Journal of Korea Foundry Society (한국주조공학회지)

Korea Foundry Society (한국주조공학회)
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Effect of Mold Materials on the Microstructure and Tensile Properties of Al-Si based Lost Foam Casting Alloy

Al-Si계 소실모형주조합금의 미세조직 및 인장성질에 미치는 주형재료의 영향

  • Kim, Jeong-Min (Department of Advanced Materials Engineering, Hanbat National University) ;
  • Lee, Gang-Rae (Research Institute of Advanced Manufacturing Technology, Korea Institute of Industrial Technology) ;
  • Choe, Kyeong-Hwan (Research Institute of Advanced Manufacturing Technology, Korea Institute of Industrial Technology)
  • 김정민 (한밭대학교 신소재공학과) ;
  • 이강래 (한국생산기술연구원 뿌리산업기술연구소) ;
  • 최경환 (한국생산기술연구원 뿌리산업기술연구소)
  • Received : 2019.07.22
  • Accepted : 2019.09.26
  • Published : 2019.10.31
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Abstract

The effects of mold materials on the microstructure and tensile properties were investigated to develop a mass production technique of aluminum alloy parts with excellent mechanical properties using a lost foam casting method. The microstructures of the plate-shaped cast alloy showed a tendency to be finer in proportion to the thickness of the plate, and a remarkably fine structure was obtained by applying a steel chill or a ball as a mold material compared to general sand. When a steel ball was used, it was observed that the larger the ball, the finer the cast structure and the better the tensile properties. The microstructure and tensile properties of the cast parts with complex shapes were greatly affected by the gating system, but the positive effects of the steel chill and the steel ball as a mold material were clear.

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References

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