|
 Brown
Fused Alumina abrasive is electrically fused in an arc
furnace from a mixture of bauxite, coke (anthracite)
as main raw materal at high temperature.It's chemical
composition contains Al2O3, TiO2,
and small amount of SiO2, and Fe2O3,
etc,. Microhardness:1800-2200 kg/mm2,toughness
higher than silicon carbide. Abrasive articles made
of it is suited for grinding metals of high-tensile
strength such as steel, annealed malleable iron and
hard bronze etc..Browm fused alumina can also be used
for making high-class refractory products.
CHEMICAL
COMPOSITION：
| Symbol
& Range of Grit Size |
Chemical
Composition%(by weight) |
| Al2O3 |
TiO2 |
SiO2 |
Fe2O3 |
CaO |
MgO
|
| A
|
F4-F80
|
95.5-97.5
|
2.0-3.8 |
≤0.9 |
≤0.15 |
≤0.35 |
≤0.5
|
| F90-F150 |
94.5-97.5
|
| F180-F220 |
93.5-96.5 |
| Typical
Sample Analysis Value F46 |
95.98 |
2.5 |
≤0.80 |
≤0.08 |
≤0.28 |
≤0.32 |
MAGNETIC
MATERIAL CONTENTS: (%)
| Grit Size |
F10-F24 |
F30-F60 |
F70-F100 |
F120-F220 |
| Magnetic material
Contents |
≤0.0250 |
≤0.0220 |
≤0.0180 |
≤0.0130 |
|
