High Quality White Fused Alumina Oxide Aluminum for Blasting Grinding Polishing
Note: Special requirements on chemical composition and other terms can be satisfied through discussion.
White fused alumina is produced by bayer alumina in an electric arc furnace at high temperatures. The product shows higher hardness and lower toughness than that of brown aluminium oxide. The materials are used to grind high carbon steel, high speed steel and chilled steel. It can also be used as polishing materials and precision founding sand, spraying and coating materials, catalyst carrier, special ceramics and super refractory materials.
| Grain Usages and Types | ||||
| Usage | For vitrified wheels | For organic wheels | For coated abrasives | For refractory materials |
| Type | WA | WA-B | WA-P | WA-R |
| Physical Characteristics | |||||
| Item | Basic mineral | Crystal system | Crystal color | Mohs hardness | Density |
| White aluminum oxide | α- Al2O3 | Hexagonal | White | 9 | ≥3.90g/cm3 |
| Item | Micro hardness | Electrical resistivity | Grinding ability(compared with diamond as one) | Linear expansion coefficient(when 900ºC α•10-6k-1) | |
| White aluminium oxide | HV2200-2300 | 1014-1016Ω•cm | 0.12 | 8.3 | |
| Chemical Composition | |||
| GB/T 2479-2008 | |||
| Type | Grit | Chemical composition (%, by weight) | |
| Al2O3 | Na2O | ||
| WA | F4-F80 | ≥99.10 | ≤0.35 |
| F90-F150 | ≥99.10 | ≤0.40 | |
| F180-F220 | ≥98.60 | ≤0.50 | |
| F230-F800 | ≥98.30 | ≤0.60 | |
| F1000-F1200 | ≥98.10 | ≤0.70 | |
| WA-B | F4-F80 | ≥99.00 | ≤0.50 |
| F90-F150 | ≥99.00 | ≤0.60 | |
| F180-F220 | ≥98.50 | ≤0.60 | |
| WA-P | P12-P80 | ≥99.10 | ≤0.35 ≤0.40 |
| P100-P150 | ≥99.10 | ||
| P180-P220 | ≥98.60 | ≤0.50 | |
| P240-P800 | ≥98.30 | ≤0.60 | |
| P1000-P1200 | ≥98.10 | ≤0.70 | |
| P1500-P2500 | ≥97.50 | ≤0.90 | |
| WA-R | 0-1mm | ≥99.00 | ≤0.50 |
| 1-3mm | ≥99.00 | ≤0.50 | |
| 3-5mm | ≥99.00 | ≤0.50 | |
| 5-8mm | ≥99.00 | ≤0.50 | |
White Fused Alumina (WA)
