Steel tube sandblasting white alumina oxide F80#
White alumina oxide introduction:
White corundum is smelted from high-quality alumina powder, melted in an arc furnace at a high temperature of 2200 degrees, and then cooled naturally or cooled by water to completely crystallize into molten alumina liquid. The alumina powder is completely melted, cooled after the crystal cools, and a white alumina oxide block is formed. Then it is crushed, the ball mill continues to grind, and then is produced according to industrial standards. The ground white corundum is usually used to grind the surface of different workpieces (for example, grinding, polishing, polishing, etc.). The white corundum in our factory is a high-grade sandblasting material, whose composition is more than 99% of alumina, which is concentrated outside the industrial standard. When used for sandblasting, it is more efficient and effective, and will not leave scratches on the surface of the workpiece.
Production progress:
Available Grain Sizes for white alumina oxide:
| Fraction | 0-1mm 1-3mm 3-5mm 5-8mm | |
|---|---|---|
| Fine Powder | 200#-0 320#-0 | |
| Grit | 8# 12# 14# 16# 20# 24# 30# 36# 46# 54# 60# 70# 80# 90# 100# 120# 150# 180# 220# 240# | |
| Micro Powder | JIS Standard | #240 #280 #320 #360 #400# #500 #600 #700 #800 #1000 #1200 #1500 #2000 #2500 #3000 #4000 #6000 #8000 #10000 |
| FEPA Standard | F230 F240 F280 F320 F360 F400 F500 F600 F800 F1000 F1200 F1500 | |
Typical Chemical Analysis for white alumina oxide:
| Grain Size | Chemical Composition (%) | |||
|---|---|---|---|---|
| Al2O3 | Fe2O3 | Na2O | SiO2 | |
| Fraction | ≥99 | ≤0.08 | ≤0.35 | ≤0.08 |
| Fine Powder | ≥98.5 | ≤0.15 | ≤0.40 | ≤0.08 |
| Grit | ≥99 | ≤0.1 | ≤0.35 | ≤0.08 |
| Micro Powder | ≥98 | ≤0.1 | ≤0.40 | ≤0.08 |
Typical Physical Properties for white corundum:
| Mohs Hardness | 9.0 |
|---|---|
| Bulk Density | 1.55-1.95g/cm3 |
| True Density | 3.95g/cm3 |
| Volume Density | 3.60 |
| Melting Point | 2250℃ |
| Maximum Use Temperature | 1900℃ |
Manufacturing Process
White alumina oxide is commonly prepared using several methods, with the ball milling method being one of the most prevalent. In the ball milling process, raw materials are mixed with milling media (such as glass or steel balls) and ground under high-speed rotation. Another method is the electric fusion process. In this method, raw materials are placed in an electric furnace, melted at high temperatures, and then cooled and crushed to produce white fused alumina.
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