Factory wholesale White Aluminum Oxide For Grinding Wheel - Micro Sodium White Fused Alumina – Yufa
Factory wholesale White Aluminum Oxide For Grinding Wheel - Micro Sodium White Fused Alumina – Yufa Detail:
Compared With β-Al2O3 And α-Al2O3
Sodium oxide is a harmful impurity to white corundum. It forms β-Al2O3 with alumina in the molten state, and the amount of production increases with the increase of sodium oxide content. Na2O in white corundum mainly appears in the form of Na2O·11AL2O3 (β-Al2O3). For example, if the alumina raw material contains more than 0.6% sodium oxide, the white corundum produced with it will contain more than 10% β-Al2O3.
Compared with β-Al2O3, α-Al2O3 has ‘three highs’. First, it has a high melting point, Secondly a high density, and thirdly a high hardness, as shown in the following table:
| Phase | Chemical compositions | Crystal System | Density (g/cm3） | Micro hardness (Kg/mm²) | Melting point (℃) |
| α-Al2O3 | Al2O3 | Hexagonal | 4.0 | 2300 | 2050 |
| β-Al2O3 | Na2O·11Al2O3 | Trigonal | 3.24 | 1300~1600 | 1600 |
Advantages
The micro-sodium white fused alumina improves the melting point, particle density, bulk density, flexural strength, compressive strength, true density, hardness and other properties of white corundum products, laying a solid foundation for the product to enter the high-end market.
Applications
It is suitable for processing alloy steel, high hardness steel, high carbon steel and other materials with high hardness and high tensile strength.
Chemical Composition
| Chemical Composition | Na2O % ≤ | Al2O3 % ≥ | SiO2 % ≤ | Fe2O3 % ≤ |
| Gurantee Value | 0.06 | 99.7 | 0.1 | 0.05 |
| Typical Value | 0.02 | 99.89 | 0.04 | 0.03 |
Product detail pictures:
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Our personnel are generally within the spirit of "continuous improvement and excellence", and using the excellent top quality goods, favorable rate and superior after-sales expert services, we try to win every customer's believe in for Factory wholesale White Aluminum Oxide For Grinding Wheel - Micro Sodium White Fused Alumina – Yufa , The product will supply to all over the world, such as: Comoros, Kuala Lumpur, Zurich, We only supply quality items and we believe this is the only way to keep business continue. We can supply custom service too such as Logo, custom size, or custom merchandise etc that can according to customer's requirement.
By Kim from Adelaide - 2018.07.27 12:26
The sales manager is very patient, we communicated about three days before we decided to cooperate, finally, we are very satisfied with this cooperation!
By Sophia from Angola - 2018.12.05 13:53
