Mould Making Foundry Chrome Ore Sand AFS40-45

Mould Making Foundry Chrome Ore Sand AFS40-45

Casting Chrome ore sand is a kind of foundry sand with high refractoriness. The content of chromium oxide of casting chromite sand should be at least 46%. That will get high Solid-phase sintering temperature. Chrome ore sand is especially featured with its high thermal conductivity. It can not only make the casting steel cool quickly, but also prevent casting iron& steel from sand-sticking.

Typical physical properties of Casting Chrome ore sand:
Hardness: Mohs:5.5-6
Melting Point: Sublimes at 2180 ªC
Sintering point: >1800ªC
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 Casting Chrome ore sand:

1. High sintering temperature and refractoriness.
2. Good grain shape without sharp angles.
3. High thermal conductivity.
4. Low thermal expansion ratio.
5. Low magnetics and turbidity.

Applications of Casting Chrome ore sand:

1. For casting technologies such as Sand casting, No bake sand casting, Shell molding casting, Investment casting, Lost foam casting, etc.
2. Casting Iron, casting steel, High manganese steel, chromium steel, etc.
3. Medium size, large size and giant size castings.