Grade A White Fused Alumina 24 Grit
White fused alumina abrasive is a type of abrasive with over 99% content of electrically fused aluminum oxide. It can not only be used for producing abrasive tools but is also widely used for sandblasting industrial components such as metals, stainless steel, glass, and aluminum alloys. It can increase the surface roughness of workpieces that require sandblasting treatment, providing a foundation for subsequent painting and improving the adhesion of coatings.
Chemical Composition of White Fused Alumina (Typical Indicators):
| White Fused Alumina Grit | White Fused Alumina Micro Powder | White Fused Alumina Grain | White Fused Alumina Fine Powder |
|---|
AL2O3 | 99.53% | 99.27% | 99.59% | 99.28% |
SiO2 | 0.13% | 0.14% | 0.01% |
|
NA2O | 0.23% | 0.28% | 0.24% | 0.27% |
Fe2O3 | 0.07% | 0.06% | 0.02% | 0.05% |
CaO |
| 0.05% | 0.02% | 0.04% |
Physical Properties of White Fused Alumina Abrasive:
Color | White |
|---|
Mohs Hardness | 9.0 |
Knoop Hardness |
|
Operating Temperature | 1900℃ |
Melting Point | <極>2250℃
Specific Gravity | 3.95g/cm3 |
Bulk Density | 3.6g/cm3 |
Packing Density | 1.55-1.95 g/cm3 |
Specific Heat | 0.26 cal/g.℃(20-90℃) |
Thermal Conductivity | 6.16W/（m·K）（1000℃） |
Linear Expansion Coefficient | 8.0×10-6/℃（200-1000℃） |
Refractive Index | e=1.760 w=1.768 |
Chemical Reaction | Acidic substances: Slightly corroded in aqua regia and hydrofluoric acid; Alkaline substances: Only slightly reacts with strong alkaline hot solutions |
Crystal Form | Trigonal system |
Product Models of White Fused Alumina:
Grain |
|
Fine Powder | 100#-0,200#-0,270#-0,325#-0 |
Grit | 8#10#12#16#20#22#24#30#36#46#54#60#70#80#90#100#120#150#180#220# |
Micro Powder | WStandard: W63 W50 W40 W28 W20 W14 W10 W7 W5
W3.5 W2.5 W1.5 W0.5 |
European Standard: F230 F240 F280 F320 F360 F400 F500
F600 F800 F1000 F1200 F1500 F2000 |
JISJapanese Standard: 240# 280# 320# 360# 400# 500# 600#
700# 800# 1000# 1200# 1500# 2000# 2500# 3000# 4000# 6000# 8000# 10000# |
Main Performance Characteristics of White Fused Alumina:
1.High purity of aluminum oxide (over 99%), resulting in high hardness, strong grinding power, and high grinding efficiency
2.The white fused alumina grit produced by our company is made from fixed furnace grade A block material through crushing and screening, with better toughness than tilted furnace white fused alumina. As a raw material for abrasive tools, it can improve the sharpness of the product, and as a sandblasting material, it has better durability.
3.White fused alumina has uniform particle size. Compared to consumables like natural emery and glass beads, it is less likely to clog nozzles and has high particle consistency.
4.White fused alumina grain and fine powder have low sodium content (within 0.3%), making them suitable as refractory castables and aggregates, enhancing the erosion and corrosion resistance of refractory materials.
5.White fused alumina micro powder is produced through a water-based process, resulting in more uniform particle size, no large particles, and no scratching of workpiece surfaces.
6.White fused alumina can also be directly used for grinding, polishing, surface treatment, sandblasting, rust removal, etc. It can be used for dry and wet sandblasting, surface roughening and polishing, surface treatment and passivation before coating, etc.
7.
8.Strong chemical stability, good resistance to acids and alkalis, insoluble in water
9.Strong thermal stability, wear resistance at high temperatures is not affected
10.Produced through a special ball milling process, with low metal residue, high whiteness, and no impact on the color of coatings and other products
11.White fused alumina has high refractory temperature, resistance to acid and alkali corrosion, and good thermal properties.It is not only used for grinding and polishing but also as an additive material for coatings, ceramics, rubber, plastics, and composite materials.
