Spherical Foundry Ceramic Sand

Spherical Foundry Ceramic Sand is a kind of refractory particle with diameter of 0.020mm~3.350mm, mainly made of Al2O3A.SiO2. It is ball-shaped particle made from bauxite by high-temperature melting in electric-arc furnace, spraying and cooling.

Features:-
1.Solid spherical sand
1) Excellent in fluidity and filling efficiency owing to its ball-shape. For complex shape castings, inner include angle, deep concave, flat holes and other parts which are difficult to fill, it can work efficiently. Thus, the defect like metal penetration and the workload of cleaning can be reduced significantly.
2) Smooth surface, the structure is tight, and the binder can be uniformly covered.
3) Small surface area can reduce one third the amount of binder.

2.High refractoriness
1) Superior refractory equivalent to zircon and Chromites
2) Higher than silicon sand, can be used for casting various materials.
3) Non-stick, non-sintering on the casting, which reduces the deformation of the casting.

3.Low coefficient of thermal expansion
1) Can be comparable to the zircon sand.
2) Ensures fewer or no casting defects such as veining and
deformation.
4.Low gas evolution and high permeability
5.Low bulk density
6.Artificial foundry sand
7.Low cleavage breakage rate