Foundry chromite sand is a natural process products of chromite through the broken screen classification, chrome ore, its main chemical composition of cr2o3, this kind of sand heated volume stability, high thermal conductivity, when in contact information with the molten metal, not only has good resistance to basic slag, not with ferric oxide and other chemical reactions, and itself has the characteristics of the solid phase sintering, can be a very good prevent the infiltration of molten metal, avoid to touch sand defects, suitable for all kinds of stainless steel, alloy steel and carbon steel gradually shape the original sand core and coating.
Ceramic sand called China Cerabeads or ceramsite sand, china Cerabeads and cerasand too is made from high-quality bauxite, by re-fused and blown to ball type. With advantage of fine surface smooth finish and air permeability, it is a new type of material for molding sand in resin coated sand casting and shell molding sand.
SAFE to the environment compared with silica (silicosis) and zircon sandCeramic Sand offers longer work life and reduction of sand usage.Ceramic Sands spherical shape compared with angular shaped grains allows for easier separation from cast parts and improved collapsibility resulting in lower scrap and casting efficiency.Lower Thermal expansion and Thermal Conductivity. Casting dimensions are more accurate and lower conductivity provides better mold performance.Requires 40-50% less resinCan be used as a single sandOffers lower true specific gravity and specific surface areaImproved durability compared with silica and chromite
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