| Natural Abrasive Type: | Natural Corundum |
|---|---|
| Artificial Abrasive Type: | Corundum Abrasives |
| Application: | Machinery |
| Function: | Surface Deburring |
| Source: | Natural Abrasives |
| Particle Size: | Abrasive |
| Samples: |
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| Customization: |
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Brown aluminum oxide is obtained from fusion of high-quality bauxite. Main features are Good harness, high compression strength, good hydrophily and lower expansion coefficient.
There are F sand and P sand.
The F grits 12#-220# is widely used to produce Bonded abrasives grinding wheel, cutting discs, also for sandblasting.
P sand used to produce coating abrasives sand paper, sand belt, flap wheel, etc.
The types of Synthetic Aluminum Oxide Brown Fused Alumina
There is top grade (Min 95% Al2O3) brown aluminum oxide and offgrade(Min 90%Al2O3) brown aluminum oxide,
second grade (Min 80% Al2O3)brown alumina according to the different alumina content.
Fixed furnace brown fused alumina and Tilting furnace brown fused alumina accoriding to different type of electric furnace.
Barmac,Ball Milling,Roller Brown Fused Alumina according to different crushing methods.
What Is Difference Between Tilting Furnace Melted BFA & Fixing Furnace Melted BFA ?
Ball Milling & Barmac Process?
1. Tilting furnace process affects SiO2, SiO2 <1% by Tilting furnace, SiO2 <1.5% is by fixed furnace.
2. Barmac affects the density, the grain shape is rounder & the density is greater than ball milling
3. The Tilting furnace made BFA has high Al2O3 content
4. The corundum has good toughness & more suitable for abrasive products by dumping furnace process
The difference between F-grit & P-grit Abrasive grains:
F-grit is more suitable for bonded abrasive tools.
P-grit is more suitable for coated abrasive tools. It is with a closer tolerance size distribution, lower density, and better self-sharpening ability than non-P-grit abrasives, which means that they offer a more consistent surface finish.
Main Technical Index of Synthetic Aluminum Oxide Brown Fused Alumina
| Commodity | Usage | Grit | Main Chemical Index | ||||
| Al2O3 | TiO2 | SiO2 | Fe2O3 | Magnetic | |||
|
Brown Aluminium Oxide
|
Bonded Abrasives | F4~F80 | ≥95% |
≤3.5%
|
≤1.0% | ≤0.30% | ≤0.05 |
| F90~F150 | ≥94% | ≤3.5% | ≤1.0% | ≤0.30% | ≤0.03 | ||
| F180~F220 | ≥93% | ≤3.5% | ≤1.0% | ≤0.30% | ≤0.03 | ||
| Main Physical Index | |
| Color | Brown |
| Crystal Form | Trigonal Crystal System |
| True Specific Gravity | ≥3.97g/cm3 |
| Bulk Density | 1.68-1.98g/cm3 |
| Vicker Hardness | 2100kg /mm2 |
| Mohs Hardness | 9 Mohs |
| Compressive strength | 34N |
| Type | Grit | Al2O3 | TiO2 | CaO | SiO2 | Fe2O3 |
| A | F4-F80 | 95.00-97.50 | 1.70-3.40 | ≤0.42 | ≤1.00 | ≤0.30 |
| F90-F150 | 94.50-97.00 | |||||
| F180-F220 | 94.00-97.00 | 1.70-3.60 | ≤0.45 | ≤1.00 | ≤0.30 | |
| F230-F800 | ≥93.50 | 1.70-3.80 | ≤0.45 | ≤1.20 | ≤0.30 | |
| F1000-F1200 | ≥93.00 | ≤4.00 | ≤0.50 | ≤1.40 | ≤0.30 | |
| A-B | F4-F80 | ≥94.00 | 1.50-3.80 | ≤0.45 | ≤1.20 | ≤0.30 |
| F90-F220 | ≥93.00 | 1.50-4.00 | ≤0.50 | ≤1.40 | ≤0.30 | |
| F230-F800 | ≥92.5 | ≤4.20 | ≤0.60 | ≤1.60 | ≤0.30 | |
| F1000-F1200 | ≥92.00 | ≤4.20 | ≤0.60 | ≤1.80 | ≤0.30 | |
| A-P | P12-P80 | 95.00-97.50 | 1.70-3.40 | ≤0.42 | ≤1.00 | ≤0.30 |
| P100-P150 | 94.50-97.00 | |||||
| P180-P220 | 94.00-97.00 | 1.70-3.60 | ≤0.45 | ≤1.00 | ≤0.30 | |
| P240-P800 | ≥93.50 | 1.70-3.80 | ≤0.45 | ≤1.20 | ≤0.30 | |
| P1000-P1200 | ≥93.00 | ≤4.00 | ≤0.50 | ≤1.40 | ≤0.30 | |
| P1500-P2500 | ≥92.50 | ≤4.20 | ≤0.55 | ≤1.60 | ≤0.30 | |
| A-R | 0-1mm | 94.00-97.50 | 1.50-3.80 | ≤0.45 | ≤1.40 | ≤0.30 |
| 1-3mm | 94.00-97.50 | 1.50-3.80 | ≤0.45 | ≤1.40 | ≤0.30 | |
| 3-5mm | 94.00-97.50 | 1.50-3.80 | ≤0.45 | ≤1.40 | ≤0.30 | |
| 5-8mm | 94.00-97.50 | 1.50-3.80 | ≤0.45 | ≤1.40 | ≤0.30 |
Main Features of Brown Fused Alumina
Main Application of Synthetic Aluminum Oxide Brown Fused Alumina
Brown Aluminum Oxide F24#,F30#,F36# is the most popular grit size
It is widely used for making various kinds of resin cutting discs,which is suitable for cutting or grinding the
carbon steel, oridiary alloy steel, calcinable cast iron, hard bronze, etc
Brown Aluminum Oxide is also used for making ceramic grinding wheels for rough grinding, semi-finishing,
fine grinding,grooving,cutting purpose.
In addition, Brown Aluminium Oxide is also widely used for making coated abrasives,refractory materials,
anti-skid materials, blasting media, brake pad etc.
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