Zhengzhou Zhengtong Abrasive Import&Export Co.,Ltd
Zhengzhou Zhengtong Abrasive Import&Export Co., Ltd is exporter of blasting media ceramic beads, brown fused alumina, black fused alumina, white fused alumina & grinding media zirconia beads,
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Moderate Hardness Black Aluminum Oxide Artifical Corundum F100#-F400# for Fiber wheels
1. Product Description of Black Aluminum Oxide Artifical Corundum
Black aluminum Oxide is one kind of flexible wear-resistent abrasive,it has the characteristic of moderate
hardness and good self-sharpness, which is generally mixed with brown fused alumina to make bonded
abrasives and coated abrasives for polishing and cutting purpose.
2. Main Technical Index of Black Aluminum Oxide Artifical Corundum
| Quality Level | Main Chemical Index | |||
| Al2O3 | Fe2O3 | SiO2 | TiO2 | |
| Oridinary | ≥60 | 6-12% | ≤25% | 2-4% |
| Top Quality | ≥80 | 4-8% | ≤10% | 2-4% |
| 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 |
| Grit Size(Oridinary) | F12-F240#,F260-F400# |
| #325-0,#500-0 ,#1000-0 | |
| Grit Size(Top Quality) | F12-F240 F280-F1000 |
| Product Standards | GB/T Standard,FEPA Standard |
3. Main Applications of Black Aluminum Oxide Artifical Corundum
Black Aluminum Oxide is suitable to make verious coated abrasives such as fiber wheels,nylon sand belts,
sponge sand blocks, scouring pad.
4. How to use Black Aluminum Oxide Artifical Corundum to Make Coated Abrasives?
One application is use the pure black aluminum oxide to make the above products for polishing various
workpieces especially for stainless steel polishing.
When making the above products,It is suggested to increase the ratio of black aluminum oxide and use more
coarse grain size to enhance the final durability.
The other application is mixing black aluminum oxide with other higher hardness and durability abrasives such
as brown alumium oxide,silicon carbide to make the above products.Then it will with other higher hardness
and durability abrasives such as brown alumium oxide,silicon carbide.
It is suggested to use more coarse black alumina grit to partly replace the original grit of brown alumina or
silicon carbide,then maintain the other grit size as the original one.
The specific mixture ratio could be achieved by experience.
5. Product Pakages of Black Aluminum Oxide
Ton Bag
25kg Bag+Pallets;
Special packages can be customized.
6. Why Choose us?
China Largest Black Fused Alumina Manufacturer,over 20 years production experience;
Occupies more than 60% Domestic Black Fused Alumina marketing;
The Stable Supplier of Saint-gobain Group and Forsoc Group;