Low Cost Black Aluminum Oxide Emery F24,F30,F36,F46,F80 for Resin
Cutting Discs
1. Product Description of Black Aluminium Oxide
Black Aluminum Oxide is a black crystal with Al2O3 and iron spinel
as the main ore phase,
it selected the high alumina bauxite, high iron bauxite or iron
oxide scrap as the main materials,
then melted in an electric arc furnace under high temperature .
2. Main Technical Index of Black Aluminium Oxide
| Main Physical Index |
| Color | Black |
| Crystral Structure | Trigonal |
| Mohs Hardness | 8.0-9.0 |
| Vicker Hardness | 2000-2200kg/mm2 |
| Specific Gravity | ≥3.5g/cm3 |
| Bulk Density | 1.68-1.22 g/cm3 |
| Chemical Index | Al2O3≥60% Fe2O3 6-12% |
| SiO2≤25% TiO2 2-4% |
| Grit Size | F12-F240#,F260-F400# |
| #325-0,#500-0 ,#1000-0 |
3. Main Products Features:
High Effciency
Strong cutting force and good self-sharpening which are able to
improve the cutting or polishing efficiency.
Smooth finish with little surface discoloration
Moderate hardness,little heat generated in surface,not easy to burn
the treatment surface when polishing
or cutting process,achieving smooth finish with little surface
discoloration.
Better price /performance ratio
Cost is much lower than other abrasives(aggregate) with equivalent
performance.
Environmental friendly
Waste comprehensive utilization, melting crystallization, noharmful
gases generated in the whole production,
so it is one environmental friendly abrasive.
4. Main Application of Black Aluminium Oxide
Black Aluminum Oxide is widely used for making resin cutting discs
mixed with brown aluminum oxide,
the popular grain size is F24,F30,F36,F46,F60,F80 etc.
It is suggested to use 25% black aluminum oxide to partly replace
brown fused alumina with the same grit size
or one more coarse grit size than the original one, it will
achieved better grinding effect if adding 5% black alumina
F70&F80 to make the resin cutting discs more smooth.
In addition,Black Aluminum Oxide P40,P60,P80 is widely used for
making coated abrasives (jumbo rolls,sand belts
etc.)together with the brown one.
It also has the other application in blasting,polishing for
stainless steel tableware,anti-skip wear-resistant materials,
polishing wax, refractories etc.
5. Product Package:
6. Why Choose Us?
20 years professional black aluminum oxide manufacturer;
Most advanced production line and testing equipment;
Stable quality and favorable price;
More than 20 invention & utility model patents;
Certificated by ISO9001&14001;
Main Suppliers of Saint-gobain group,Fosroc group etc.
