Evaluation efficiency of gating system for cleaning of AK18 alloy modified with shungite during sand casting

This study compares the efficiency of two gating systems for sand casting of AK18 alloy (Al—18 % Si) modified with 1 % carbon in the form of fullerenes contained in shungite rock. The effect of an elbow riser passing through two mould halves on cleaning the alloy of non-metallic inclusions and preserving the modifying effect of the fullerenes is studied. It is shown that a gating system with a cranked riser ensures effective contaminant removal and does not negatively impact the morphology of silicon in the alloy.