PRODUCTS
AR SAND
- Artificial Sand for Casting Molds
IKK offers artificial sand of high heat stability and low thermal expansion for use with casting molds.
Main Features of AR SAND
- AR SAND is artificial sand manufactured from high alumina material by an electro-melting and blowing method.
- Suitable for practically any kind of casting mold such as greensand mold, self-hardening mold, shell mold and others, regardless of size.
- Recyclable and Eco-friendly because it does not contain free silicic acid.
- Very high sphericity contributes to excellent fluidity and filling efficiency, resulting in higher mold accuracy and strength.
- Less crush and distortion in mold and improved dimensional accuracy are achieved thanks to low thermal expansion.
- Superior fire resistance for Mullite-based material.
- Superior in fracture resistivity and recyclability, enabling reduction of new sand supply and industrial waste.
- Dust concentration control becomes easy and work environment will be improved, because free silicic acid is not contained.
Specifications of AR SAND
| mesh | 26 | 36 | 50 | 70 | 100 | 140 | 200 | 280 | pan | AFS |
|---|---|---|---|---|---|---|---|---|---|---|
| μm | 600 | 425 | 300 | 212 | 150 | 106 | 75 | 53 | -53 | |
| #350 | 12.7 | 42.8 | 36.5 | 6.3 | 1.3 | 0.2 | 0.2 | 34.5 | ||
| #450 | 7.5 | 34.2 | 25.6 | 15.0 | 11.5 | 5.2 | 0.9 | 0.1 | 44.2 | |
| #650 | 0.1 | 5.8 | 26.7 | 24.3 | 23.5 | 11.4 | 6.6 | 1.4 | 0.2 | 65.1 |
| #750 | 1.9 | 10.0 | 34.8 | 26.2 | 16.6 | 7.5 | 2.4 | 0.6 | 74.0 | |
| #1500 | 0.1 | 3.6 | 10.8 | 49.6 | 29.5 | 6.4 | 161.0 |
| Strength Comparison | AR SAND #650 | Imported Silica Sand | ||
|---|---|---|---|---|
| Amount of Resin (PHS) | 1.2 | 0.8 | 1.5 | |
| Amount of Hardener Agent (PHR) | 20 | |||
| Sand Discharging Temperature (°C ) | 25 | 25 | 25 | |
| Working Life (min) | 6 | 6 | 6 | |
| Compressive Strength / / Bulk Density (N/mm²)/(g/cm³) |
0.5H | 1.2／2.0 | 0.8／2.0 | 0.7／1.6 |
| 1H | 2.0／2.0 | 1.5／2.0 | 1.3／1.6 | |
| 24H | 3.5／2.0 | 3.0／2.0 | 2.6／1.6 | |
※Unit: (N/mm2)/(g/cm3)
| Sand Type | Crush Rate (%) |
|---|---|
| AR SAND #650 | 106 |
| Imported Silica Sand | 206 |
Crush Rate = 100 x (Particle Size Index After Crush / Particle Size Index of Original Sand)
Ball Mill used at 250rpm for 50min.
Amount of Added Resin: 2.0PHS
Hexamine: 15PHR
Calcium Stearate: 0.1PHS
Coefficient of Thermal Expansion at 1000°C
Project Photos
