What are the advantages of using chromite sand over silica sand in the foundry industry?
1. Excellent resistance to metal penetration Advantages: Chromite sand particles are dense and have a smooth surface. It reacts with metal oxides (such as FeO) to form high-melting-point compounds, effectively preventing liquid metal from penetrating the gaps between sand particles. This is its core advantage. Results: Castings have a high surface finish and are less


