View Full-text

pISSN : 1598-706X / eISSN : 2288-8381


한국주조공학회지 (37권6호 193-198)

The Effect of Casting Conditions on Shrinkage and Porosity of A356.2 Alloys

A356.2 합금의 수축과 기공에 미치는 주조 조건의 영향

Gyu-Tae Jeon, Ki-Young Kim and Suk-Jun Kim

School of Energy, Materials and Chemical Engineering, KOREATECH, Cheonan 31253, Korea



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 400oC, 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.


A356.2 alloys, Shrinkage, Porosity, Tatur mold, Tailored additive casting