chromite powder used as foundry casting
hromite powder is widely used in foundry coatings (also called mold washes or refractory coatings) to improve the surface quality of metal castings. 1. Role of Chromite in Foundry Coatings Chromite powder (FeCr₂O₄) is applied as a refractory coating on sand molds and cores to: Prevent metal penetration (burn-on defects). Reduce sand fusion (sand sticking to the casting). Improve surface finish (smoother castings). Withstand high