Ceramic abrasive grain F120 for vitrified abrasives
Introduction of Ceramic abrasive grain F120 for vitrified abrasives
Ceramic abrasive grain F120 for vitrified abrasives is a kind of sintered abrasive made by sol gel method with special alumina as the main raw material, mixed with a variety of modified components. SG ceramic abrasive can be applied to bonded grinding tools and coated grinding tools. This abrasive has a wide range of applications, including casting grinding under high pressure, as well as precision grinding of various materials, including gear grinding, bearing grinding, crankshaft grinding, roller grinding, and others.
The features of Ceramic abrasive grain
1. Small crystal size about 100-150nm, which is even much smaller than zirconia alumina. And it’s hundredths of the size of normal fused alumina grains.So it will make abrasive wheels increase lifetime by several times than ordinary wheels.
2. Excellent self-sharpening performance. The sol-gel grain will get new grinding edges after grinding. The edges are get from the single grain crystal instead of off a whole crystal. That makes the grain much sharper than normal fused alumina.
3. The microscopic hardness of sol-gel alumina is about 1900-2400 kgs/cm2,which is higher than zirconia alumina. Thus,sol-gel alumina can make grinding and cutting easier for special hard metal such as Nickel chromium alloy and nickel titanium alloy.
4. The roughness is double of normal fused alumina,and even higher than zirconia alumina.
5. Low temperature grinding is another significant property of Sol-gel alumina abrasive grain. That will avoid much heat during grinding and cutting, so it won’t get hurt of workpiece surface.
6. Small size grinding edges and sharp grinding can avoid tiny crackle on workpiece.
Physical properties of Ceramic abrasive grain
| Product Name | SG Blue Ceramic Alumina Abrasive |
| Method | Sol-Gel |
| True Density | ≥3.90 g/cm³ |
| Hv Hardness | 2100-2200(khf/mm³) |
| Color | Blue |
| Crystal size | 100-150nm |
| Roughness | 65% |
Chemical composition of Ceramic abrasive grain
| AL2O3 | 94-96% |
| Y2O3 | 1-2% |
| La2O3+NdO2 | 2-3% |
Applications of Ceramic abrasive grain
Sol-gel alumina abrasive grain always mixed with other abrasive grains to make abrasive tools.
1. Diamond cutting wheel.
2. Diamond vitrified gear grinding wheel.
3. High level resin boned grinding wheel.
4. High level vitrified bonded grinding wheel.
5. Centerless grinding wheel.
6. High level cutting disc.
7. High level coated abrasives.
The bulk density of Ceramic abrasive grain
| Grit designation | Mean diameter in um | Bulk Density(g/cm3) |
| F16 | 1230 | 1.76-2.00 |
| F20 | 1040 | 1.78-2.02 |
| F22 | 885 | 1.78-2.02 |
| F24 | 745 | 1.78-2.00 |
| F30 | 625 | 1.77-2.00 |
| F36 | 525 | 1.79-1.99 |
| F40 | 438 | 1.75-1.96 |
| F46 | 370 | 1.73-1.93 |
| F54 | 310 | 1.76-1.95 |
| F60 | 260 | 1.72-1.94 |
| F70 | 218 | 1.70-1.92 |
| F80 | 185 | 1.67-1.87 |
| F90 | 154 | 1.65-1.86 |
| F100 | 129 | 1.64-1.84 |
| F120 | 109 | 1.63-1.82 |
| F150 | 82 | 1.62-1.82 |
| F180 | 69 | 1.60-1.80 |
The Package:
