Chromite Molding Sand 0-1MM 1-3MM
Product Introduction of Chromite molding sand 0.1-0.4mm
Chromite Molding Sand 0-1MM 1-3MM is a foundry-grade chromite sand. With a high Cr2O3 content of more than 46% and SiO2 of less than 1%, the chromite sand works excellent as core sand, molding sand, shape sand, and facing sand for casting. The chromite sand from Haixu Abrasives gets high thermal and chill performance after water washing and magnetic removal in our factory in China. The low Silica and mud impurities make sure the chromite sand can improve sand sticking. It can improve the surface quality of casting. Chromite sand is particularly suitable for large steel & iron castings. The excellent thermal conductivity can transfer the heat out quickly. Thus it can avoid porous in the castings.
Typical chemical composition of Chromite Molding Sand 0-1MM 1-3MM:
| Content | Guarantee value | Typical value |
| Cr2O3 | ≥46.0% | 46.5% |
| SiO2 | ≤1.0% | 0.4% |
| FeO | ≤26.5% | 26.3% |
| CaO | ≤0.3% | 0.2% |
| MgO | ≤10% | 9.8% |
| AL2O3 | ≤15.5% | 15.2% |
| P | ≤0.003% | 0.001% |
| S | ≤0.003% | 0.001% |
| Moisture (105°C) | ≤0.1% | 0.01% |
| Cr/Fe | 1.55:1 | 1.55:1 |
Typical physical properties of Chromite Molding Sand 0-1MM 1-3MM:
| Hardness: | Mohs:5.5-6 |
| Melting Point: | Sublimes at 2180 °C |
| Sintering point: | >1800°C |
| Specific Gravity: | 4.0-4.8 g/cm3 |
| Bulk density(LPD): | 2.5-3 g/cm3 |
| Turbidity (JTU) | 110 |
| Color: | Black |
| Grain shape | Sub-angular |
| PH Value | 7-9 |
| Percentage of free acid present in the sand: | 0% |
| The amount of the acid: | ≤2ML |
| Percentage of soil | ≤0.1 |
| Thermal conductivity | 0.63 W/M·K |
| Thermal expansion rate（1000℃） | 0.60% |
Characteristics of Chromite Molding Sand 0-1MM 1-3MM:
- High sintering temperature and refractoriness.
- Good grain shape without sharp angles.
- High thermal conductivity.
- Low thermal expansion ratio.
- Low magnetics and turbidity.
Applications of Chromite Molding Sand 0-1MM 1-3MM:
- For casting technologies such as Sand casting, No-bake sand casting, Shell molding casting, Investment casting, Lost foam casting, etc.
- Casting Iron, casting steel, High manganese steel, chromium steel, etc.
- Medium-size, large-size, and giant-size castings.
