High Temperature Treated BFA
High temperature calcined brown fused alumina is formed by high temperature and medium temperature calcined abrasives in the production process of raw brown fused alumina, and then annealed.
Description of High Temperature Treated BFA
Bulk Density of Brown Fused Alumina
|
Grit |
Bulk density (g/cm3) |
Grit |
Bulk density (g/cm3) |
|
F12 |
F54 |
||
|
F14 |
F60 |
||
|
F16 |
F70 |
||
|
F20 |
F80 |
||
|
F22 |
F90 |
||
|
F24 |
F100 |
||
|
F30 |
F120 |
||
|
F36 |
F150 |
||
|
F40 |
F180 |
||
|
F46 |
F220 |
Particle Size Distribution of Brown Fused Alumina (P12-P220) for Coated Abrasives
|
Grit |
Particles Sizes Distribution |
Magnetic Materials Content (%) |
|||||
|
Special Coarse Size |
Most Coarse Size |
Coarse Size |
Basic Size |
Blend Size |
Fine Size |
||
|
P12 |
6# |
8# |
12 |
45 |
85 |
/ |
|
|
0 |
≤1 |
11 |
46 |
83 |
/ |
||
|
P16 |
8# |
12# |
|||||
|
0 |
≤3 |
||||||
|
P20 |
12# |
16# |
|||||
|
0 |
≤7 |
||||||
|
P24 |
14# |
18# |
|||||
|
0 |
≤1 |
||||||
|
P30 |
16# |
20# |
|||||
|
0 |
≤1 |
||||||
|
P36 |
18# |
25# |
|||||
|
0 |
≤1 |
||||||
|
P40 |
25# |
35# |
|||||
|
0 |
≤7 |
||||||
|
P50 |
30# |
40# |
|||||
|
0 |
≤3 |
||||||
|
P60 |
35# |
45# |
|||||
|
0 |
≤1 |
||||||
|
P80 |
45# |
60# |
|||||
|
0 |
≤3 |
||||||
|
P100 |
50# |
70# |
|||||
|
0 |
≤1 |
||||||
|
P120 |
70# |
100# |
|||||
|
0 |
≤7 |
||||||
|
P150 |
80# |
120# |
|||||
|
0 |
≤3 |
||||||
|
P180 |
100# |
140# |
|||||
|
0 |
≤2 |
||||||
|
P220 |
120# |
170# |
|||||
|
0 |
≤2 |
||||||
Typical Physical Properties of High Temperature Treated BFA
Eliminate Abnormal Expansion
Calcination of brown fused alumina will produce abnormal expansion, which will lead to grid cracks on its surface, while calcination can eliminate abnormal expansion and reduce the formation of waste.
Improve Toughness And Grinding Performance
The calcined brown fused aluminium oxidehas a hard reaction inside, the compressive strength is enhanced, and the durability and sharpness are greatly improved.
Improve Hydrophilicity
The hydrophilic performance of the calcined brown fused alumina is more than doubled.
Improve Strength of Abrasive Tool
The specific surface area of the brown fused alumina particles after high temperature calcination is greatly increased, so the abrasive and the cloth base are much stronger.
Improved Durability
The durability of calcined brown fused alumina is more than 40% higher than that of ordinary brown fused alumina.
Improve Appearance And Cutting Ability
After the brown fused alumina is calcined, the magnetic substance inside is reduced, reducing the probability of rust spots on the surface.
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