white fused alumina, brown fused alumina, silicon carbide, chromite sand, garnet, boron carbide
white fused alumina, brown fused alumina, silicon carbide, chromite sand, garnet, boron carbide
Sel gel ceramic grains for centerless grinding wheel
Introduction of Sel gel ceramic grains for centerless grinding wheel
Sol-Gel Alumina abrasive is a new type abrasive grain totally different from traditional fused alumina. Sol-Gel is also called ceramic alumina grain,it is made by sol-gel process.
α-Al2O3 micro-crystal always added as seed into the raw mixed materials of Al2O3 H2O micropowder and water. By doing so,crystal will get more compact when calcined to get solid sol-gel grains. The calcining and sintering process are very important to make sol-gel crystal get small α-Al2O3 crystal size.
The features of Sel gel ceramic grains for centerless grinding wheel
Physical properties of Sel gel ceramic grains for centerless grinding wheel
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 |
50-150nm |
Roughness |
65% |
Chemical composition of Sel gel ceramic grains for centerless grinding wheel
AL2O3 |
94-96% |
Y2O3 |
1-2% |
La2O3+NdO2 |
2-3% |
Applications of Sel gel ceramic grains for centerless grinding wheel
Sol-gel alumina abrasive grain always mixed with other abrasive grains to make abrasive tools.
The bulk density of Sel gel ceramic grains for centerless grinding wheel
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 |