Chromite foundry sand price
AFS35-40 Foundry grade chromite sand price
Product description:
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.
Advantages of SICHENG Foundry chromite sand:
1. With excellent chilling characteristics, this characteristic does not reduce the thermal cracking, but can affect the temperature gradient, promote directional solidification without the use of cold iron.
2. Chromite is inert and does not react with other metal oxides. It is not wetted by manganese steel water. Chromite can be successfully used in manganese steel castings.
3. Linear expansion is small, and linear expansion is a factor that may cause sand inclusion in castings, so it may be used to mix wet sand mold for large castings.
Physical and chemical index:
Physics | Index | Chemistry | Index |
Bulk Density | 2.5-3g/cm³ | Cr2O3 | ≥46.0% |
PH Value | 7-9 | SiO2 | ≤1.0% |
Cr/Fe | 1.55:1 | Fe2O3 | ≤26.5% |
Filling Density | 2.6 g/cm³ | CaO | ≤0.30% |
Percent Moisture | ≤0.1 | MgO | ≤10% |
The sintered | 1600°C | AI2O3 | ≤15.5% |
Sintering Temperature | 2180°C | P | ≤0.003% |
Melting Point | >1800°C | C | ≤0.003% |
Regular size | |||
AFS 25-35 AFS25-30 AFS30-35 AFS35-40 AFS40-45 AFS45-50 AFS50-55 AFS55-60 AFS60-65 | |||