Thaer Ghadban  Shaalan, Samir Nassaf  Mustafa, 
    Effect of Different Cooling Conditions of Mold on Porosity for
Pure Aluminum Castings,
    Journal of Engineering and Applied Sciences,
    Volume 14,Issue 2,
    2019,
    Pages 439-443,
    ISSN 1816-949x,
    jeasci.2019.439.443,
    (https://makhillpublications.co/view-article.php?doi=jeasci.2019.439.443)
    Abstract: The results showed that liquid feeding is the dominant mechanism in pure aluminum castings. The
porosity ratios and the coefficient of utilization of the length of the casting have varied. However, the best
conditions that achieved a balance between the porosity and the coefficient of utilization of the length of the
casting were the casting in a metal mold heated to a temperature of 400°C with the average porosity being 4.2%,
while the coefficient of utilization of the cast is (98%). Gas porosity has also, been found to be dominant in pure
aluminum castings, regularly distributed between the crystals and their boundaries and tend to be of a spherical
shape.
    Keywords: Liquid feeding;pure aluminum castings;porosity distributio;metal mold;utilization;aluminum