Silica Sand Physical Properties
Desirable plasticity at the Time molding.
Desirable mold Permeability.
Being polished, the surface of produced shapes.
High sintering point and high level of not causticity.
| No. |
Useable for Following Cases |
Size
|
Code |
Sorting Coef |
Angularity |
Fusion Point
«°C» |
| 1 |
The foundry of high
alloys steel and cast iron |
35-40 |
0.4-0.8 |
T40 |
1.29 |
1.11 |
1780 |
| 2 |
The Foundry of steel, cast iron and non-ferous allays |
48-55 |
0.2-0.4 |
T50 |
1.3 |
1.16 |
1780 |
| 3 |
The foundry of carbon steel and cast iron |
55-65 |
0.5-0.3 |
T60 |
1.4 |
1.18 |
1730 |
| 4 |
The Foundry of cast iron and Aluminum |
90-100 |
0.1-0.15 |
T90 |
1.3 |
1.22 |
1730 |
| 5 |
Production of cement, ceramic and china |
- |
0.05-0.1 |
T120 |
- |
- |
1650 |
| 6 |
Production of Cement ceramic, china and cleaners Material |
- |
0-0.05 |
Tsiclon folur |
- |
- |
1550 |
Silica Sand Mechanical Properties
High dry compressive strength.
High tensile strength.
High mold hardness.
High yield strength
Few roughness on castings
Silica Sand Chemical Properties
High purity rate( 98% SiO2)
Void of volatile substances.
No chemical burning sand.
Chemical analysis comparison table of standardized sand & mine
| Compound |
Our Sand |
Standard |
| SiO2 |
97-98% |
96-98% |
| Fe2O3 |
0.5-0.7% |
0.2-0.7% |
| Al2O3 |
0.4-0.7% |
0.51-0.65% |
| CaO |
0.07-0.15% |
0.4-0.7% |
| Na2O |
0-0.01% |
0.03-0.08% |
| K2O |
0.02-0.06% |
0.09-0.08% |
| MgO |
0% |
- |
| P2O5 |
0% |
- |
| SO3 |
0% |
- |
| L.O.I |
0.01-0.35% |
- |
Coated Sand Benefits
Decreasing Gas defects
Decreasing pin holes
Hot shell tensile strength increasing
Thermal expansion decreasing
Great collapsibility
Mold atmosphere control
Shell Molding Sand Specifications
| Application |
AFS No. |
Hot Tensile Strength |
Code |
| Shell Molding |
90-100 |
24(Kg/Cm2) |
RT90 |
| High Strength sell cores and well permeability |
80-85 |
26(Kg/Cm2) |
RT80 |
Possibility of Tensile strength adjustment according your order.
Recommended Filled of Application
| Kind of powder |
Talc |
Mica |
Kaolin |
Red Iron oxide |
Fluorine |
Dolomite |
Calcite |
Bentonite |
Barite |
| Ceramics |
• |
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