The application of cast bentonite in casting is mainly reflected in clay bonded sand. Compared with ordinary shaped sand, bentonite sand has less bentonite and water, so it has high permeability, less gas generation, higher wet compressive strength and physical and chemical properties under high temperature and wet conditionCan be stable, so that the casting is not easy to produce sand holes and pores and other defects, and has high plasticity, can prevent the casting sand, scar, block, sand collapse and other phenomena. Bentonite has been widely used in casting all over the world because of its obvious superiorityThe application of.The application of cast bentonite in casting is mainly reflected in clay bonded sand. Compared with ordinary shaped sand, bentonite sand has less bentonite and water, so it has high permeability, less gas generation, higher wet compressive strength and physical and chemical properties under high temperature and wet conditionCan be stable, so that the casting is not easy to produce sand holes and pores and other defects, and has high plasticity, can prevent the casting sand, scar, block, sand collapse and other phenomena. Because bentonite has obvious superiority