60# jewel sand

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60# Ceramsite sand

60# Ceramsite sand

Baozhu sand/precision casting sand is a kind of artificial environmental protection casting sand, which is made of high quality bauxite material and melted by electric arc furnace. After years of experiments, the baozhu sand produced by arc melting overcomes the shortcomings of traditional casting sand, and has the advantages of high temperature resistance, easy collapse, good grain shape, low crushing rate, and strong reusability. Cost far more than chrome ore, zircon sand, is the casting of carbon steel, alloy steel casting ideal molding materials and access to domestic and foreign casting experts recognized. The main chemical composition is AL2O3. The casting sand is close to standard spherical sand with an angle coefficient of 1.1. A good grain type greatly improves the air permeability of the casting mold and can greatly save the amount of binder (about 30% ~ 40%). The casting sand has a small expansion coefficient (1000 ℃-0.13), which can greatly improve the casting accuracy. Mohs hardness is 7.8, with high hardness, greatly reducing the crushing rate of sand, its recycling rate can reach 98%; Baozhu sand as a neutral material PH is 7.8, which is suitable for binders with various ingredients.

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60# jewel sand

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