Products Description
White corundum is made from high-quality alumina powder as raw material, refined and crystallized by electric melting. It has slightly higher hardness than brown corundum, slightly lower toughness, high purity, good self sharpening, strong grinding ability, low heat generation, high efficiency, acid and alkali corrosion resistance, high temperature resistance, and good thermal stability. Using it to make grinding tools, suitable for grinding high carbon steel, high-speed steel, etc. It can also be used as grinding, polishing materials, precision casting, spraying materials, chemical catalyst carriers, special ceramics, advanced refractory materials, etc.
Physical and chemical indicators of white corundum: application specifications
Physical performance indicators of white corundum: project indicators
Color Pure White
Hexagonal crystal system
Hardness (Mohs) ≥ 9.0
Melting point (℃) 2250
Maximum operating temperature (℃) 1900
True density (g/cm3) ≥ 3 ninety
Linear expansion coefficient (0-1600 ℃) 7-9
Main chemical components Al2O3, Na2O% SiO2 Magnetic material% CaO
Abrasive and grinding tools
F12 # -80 # ≥ 99.0 ≤ 0.5- ≤ 0.4 ≤ 0.003
90 # -150 # ≥ 98.5 ≤ 0.6 ≤ 0.003
180 # -240 # ≥ 98.2 ≤ 0.7- ≤ 0.4 ≤ 0.002
W1 # -63 # ≥ 98.5 ≤ 0.8 ≤ 1.0 ≤ 0.5 ≤ 0.001
Refractory materials - Section sand 0-1mm1-3mm3-5mm5-8mm8-12mm ≥ 99.0 ≤ 0.5- ≤ 0.4 ≤ 0.003
Fine powder 180 # -0200 # -0320 # -0 ≥ 98.5 ≤ 0.3 ≤ 0.5 ≤ 0.001
Note: F is the specification for consolidation grinding tools and sandblasting, W is micro powder, 320 # is W40
Electric fused white corundum is produced by melting chemical grade α - Al2O3 in a fixed electric furnace or a tilting electric furnace. It is a high-quality raw material for the preparation of high-grade refractory materials and the production of abrasives and grinding tools.
Physical and chemical performance standards for white corundum abrasive
(GB/T 2479-2008)
| Code name | Particle size range |
chemical composition % |
|
|
Al2O3≧ |
Na2O≦ |
||
|
WA |
F4-F80 |
99.10 |
0.35 |
|
F90-F150 |
99.10 |
0.40 |
|
|
F180-F220 |
98.60 |
0.50 |
|
|
W63-W10(F230-F800) |
98.30 |
0.60 |
|
|
W10-W5(F1000-F1200) |
98.10 |
0.70 |
|
|
WA-B和WA-P |
F4-F80 |
99.00 |
0.50 |
|
F90-F150 |
99.00 |
0.60 |
|
|
F180-F220 |
98.5 |
0.60 |
|
Contact us
Tina
Qinyuan Fuda New Material Technology Co., Ltd
Address: Qinyuan, Shanxi Province
Mob.: +86 18636559668
Email:tina@fudanewmaterial.com
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