Journal of Korea Foundry Society (한국주조공학회지)

Korea Foundry Society (한국주조공학회)
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A Study on the Measurement of the Concentration and the Size Distribution of Inclusions in the Molten Aluminum

용융 알루미늄내에서 개재물의 크기분포 및 농도측정에 관한 연구

  • An, Jeong (Dept. of Metallurgical Eng., University of Ulsan) ;
  • Moon, Kwang-Ho (Dept. of Metallurgical Eng., University of Ulsan) ;
  • Lee, Kwang-Hak (Dept. of Metallurgical Eng., University of Ulsan)
  • 안정 (울산대학교 금속공학과) ;
  • 문광호 (울산대학교 금속공학과) ;
  • 이광학 (울산대학교 금속공학과)
  • Published : 1994.02.28
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Abstract

The concentration and particle size distribution of non-metallic inclusions which suspended in the molten aluminum at $700^{\circ}C$ were measured by using LiMCA apparatus. The result revealed that the number of inclusions increased with increasing the applied current or decreasing the orifice diameter, while decreased with increasing the purity of aluminum. And also, it was found that the number of inclusions increased with increasing the amount of boron added to molten aluminum. This was found to be attributed to the formation of the inclusions of TiB and $V_3B_2$. It was investigated that the average concentration of inclusions in a constant volume of 20ml of molten aluminum was increased in the order of pure molten aluminum, molten aluminum containing 20ppm of boron and molten aluminum used repeatly in the experimental casting in this study.

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