White Fused Alumina
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White Fused Alumina
White Fused alumina grain is one of the most commonly used abrasive grains for abrasive blasting, abrasive tools. It is an artificial abrasive material made from high purity Fused aluminum oxide blocks. WFA grain features including high hardness, roughness, and aggressive grinding ability.
White fused alumina blocks are melted in arc-furnace at 2250 centigrade for more than 24 hours and cool for about 20 hours. So it melted thoroughly and get very pure alumina crystals. The sieving process is automatically controlled after milling in ceramic ball milling equipment.
| Models | Size (μm) | Size (Mesh) |
|---|---|---|
| WFA 16# | 1400-1180 | 16# - 18# |
| WFA 24# | 850 - 710 | 20# - 25# |
| WFA 36# | 600 - 500 | 30 - 35# |
| WFA 46# | 425 - 355 | 40# - 45# |
| WFA 60# | 300 - 250 | 46# - 60# |
| WFA 80# | 212 - 180 | 70# - 80# |
| WFA 120# | 125 - 106 | 120# - 140# |
| WFA 150# | 106 - 75 | 140# - 200# |
| WFA 220# | 63 53 | 230# 270# |
Chemical Composition
| Al2O3 | 99,2% - 99,7% |
| Na2O | 0,14 % |
| Fe2O3 | 0,03 % |
| SiO2 | 0,01 % |
| CaO | 0,02 % |
| TiO2 | 0,02 % |
| MgO | 0,01 % |
Physical Index
| Hardness | 9.1 mohs |
| Grain shape | angular, sharp edged |
| Melting point | approx. 2050°C |
| Specific gravity | approx. 3,9 – 4,1 g/cm3 |
| Bulk density | approx. 1,4 – 2,1 g/cm3 |
Fused Alumina applications
- Remove paint
- Clean surface
- Polish metal
- Sculpture
- Carve
- Increase roughness
- Clean ship body
- Clean ship hull
- Treat surface of ship
