Journal of Korea Foundry Society (한국주조공학회지)

Korea Foundry Society (한국주조공학회)
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The Effect of Casting Conditions on Shrinkage and Porosity of A356.2 Alloys

A356.2 합금의 수축과 기공에 미치는 주조 조건의 영향

  • Jeon, Gyu-Tae (School of Energy, Materials and Chemical Engineering, KOREATECH) ;
  • Kim, Ki-Young (School of Energy, Materials and Chemical Engineering, KOREATECH) ;
  • Kim, Suk-Jun (School of Energy, Materials and Chemical Engineering, KOREATECH)
  • 전규태 (한국기술교육대학교 에너지 신소재 화학공학부) ;
  • 김기영 (한국기술교육대학교 에너지 신소재 화학공학부) ;
  • 김석준 (한국기술교육대학교 에너지 신소재 화학공학부)
  • Received : 2017.08.24
  • Accepted : 2017.12.14
  • Published : 2017.12.31
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Abstract

In this study, volumes of shrinkage and porosity of A356.2 alloys during casting were analyzed as a function of melt temperature, pouring diameter, mold temperature, and Sr content. The temperature of the melt barely affected the shrinkage and porosity formation. The pouring diameter determined the pouring rate, and it was proportional to the shrinkage, yet no relationships with the density of porosity were observed. When the mold was heated at $400^{\circ}C$, shrinkage and porosity in the alloy increased above the one in the mold without heating. However, the mold without heating experienced interior shrinkage and the porosity was mainly distributed near interior shrinkage. The addition of Sr to the melt resulted in more shrinkage and less porosity.

Keywords

References

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