99.61% White Fused Alumina Granules For Welding Fluxes
Tilting Furnace Barmac Crushed White Fused Aluminum Oxide WFA 99% for Welding Industry
1. White Fused Alumina Descriptions
White Fused Alumina is produced by fusing of calcined alumin in electric arc furnaces at a temperature of about 2,000 degree Celsius. It has a high refractoryness and is extremely hard and resistant. According to the final requirements WFA can be produces in Higgins or tilt furnaces. There are WFA types of different purity, we delkiver standard refractory and abrasive grade sizes.
2. White Fused Alumina Applications
White Fused Alumina is used in many applications including grinding and cut-off wheels, refractories and ceramic shapes, coated abrasives, investment casting shells, laminates, coatings, blasting abrasives, lapping and polishing, and many, many more.
3. White Fused Alumina Packing
1). 25 kg/bag, in bulk;
2). 25 kg/bag, 40 bags/big bag;
3). 25 kg/ bag, 40 bags/pallet;
4). According to customer's requirement
4. White Fused Alumina Specifications
|
Type Properties |
Lower sodium (I) | Middle sodium (II) | |||||||
| Fraction (mesh) 0-1 1-2 3-5m/m |
Fine (mesh) 0-180 0-320 |
Fraction (mesh) 0-1 1-2 3-5m/m |
Fine (mesh) 0-180 0-320 |
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| Guaranteed value | Typical value | Guaranteed value | Typical value | Guaranteed value | Typical value | Guaranteed value | Typical value | ||
| Chemical Composition (%) | a-Al2O3 | ≥99 | 99.3 | ≥98.5 | 99.23 | ≥99 | 99.14 | ≥98.5 | 98.75 |
| SiO2 | ≤0.2 | 0.15 | ≤0.3 | 0.22 | ≤0.4 | 0.12 | ≤0.4 | 0.19 | |
| Fe2O3 | ≤0.2 | 0.04 | ≤0.25 | 0.04 | ≤0.2 | 0.01 | ≤0.25 | 0.05 | |
| Na2O | ≤0.15 | 0.12 | ≤0.25 | 0.18 | ≤0.4 | 0.35 | ≤0.5 | 0.23 | |
| Principal crystalline phase | a-Al2O3 | ||||||||
| Crystalline system | Hexagon | ||||||||
| Color | white | ||||||||
| True density (g/cm3) | ≥3.95 | ||||||||
| Packing density (g/cm3) | 1.75-1.95 | ||||||||
| Mohs hardness | 9 | ||||||||
| Linear expansion (1/°C) | 8.3×10-4 | ||||||||
| Size (mm) | 8-5 5-3 3-1 1-0 | ||||||||
| Fine (mesh) | -80, -120, -240, -320 | ||||||||
| Micropowder (um) | 3-5 5-10 | ||||||||
| Test standard | GB/T3044-89 | ||||||||
| Packing | 25 kg/bag, 1000 kg/big bag | ||||||||
| Usage | Refractories | ||||||||
5. Available Sizes
| Fraction | 0-1mm 1-3mm 3-5mm 5-8mm... | |
| Fine | -100mesh -200mesh -320mesh... | |
| Grains | FEPA | F8 F10 F12 F14 F16 F20 F22 F24 F30 F36 F46 F54 F60 F70 F80 F90 F100 F120 F150 F180 F220 |
| JIS | #8 #10 #12 #14 #16 #20 #22 #24 #30 #36 #40 #46 #54 #60 #70 #80 #90 #100 #120 #150 #180 #220 | |
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JIS | #240 #280 #320 #360 #400# #500 #600 #700 #800 #1000 #1200 #1500 #2000 #2500 #3000 #4000 #6000 #8000 #10000 |
| FEPA | F230 F240 F280 F320 F360 F400 F500 F600 F800 F1000 F1200 F1500 F2000 | |
| M | 4# 3# M28 M20 M14 M10 M7 M5 | |
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