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白刚玉是以优质铝氧化粉为原料，经电熔提炼结晶而成， 纯度高、自锐性好、耐酸碱腐蚀、耐高温、磨削能力强、发热量小、效率高、,热态性能稳定它硬度略高于棕刚玉，韧性稍低。用其制成磨具，适用于磨削高碳钢、高速钢及不锈钢等细粒度磨料还可以用于精密铸造和高级耐火材料。
White fused alumina was made from the high quality alumina by melting above 2000 in the electric arc furnace and cooling. It is white with the main crystal phase alpha-Al2O3.The white alumina produced in titling electric arc furnace has the advantage of high bulk density and low porosity and the volume stability and thermal shock resistance can be improved.
一，主要物理特性Main Physical Properties
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莫氏硬度MOHS HARDNESS |
9.0 |
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堆积密度BULK DENSITY |
1.75-1.95g/cm3 |
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比重SPECIFIC GRAVITY |
3.95g/cm3 |
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体积密度 |
3.60 |
二，用途Application
1, 固结磨具和涂覆（涂附磨具）磨具Bonded abrasives and Coated abrasives
2，地板/墙体层压材料Floor / Wall Laminates
3，热喷涂/等离子喷涂Thermal Spraying (Plasma Spraying)
4，抛光和微分子喷砂Lapping & Micro-blasting applications
5，表面处理 Surface preparation and finishing
6，高级耐火材料，陶瓷Super Refractories, Ceramics and Tiles
7，制动衬面 Brake linings
1,用于耐火材料，捣杂料，炉料Used for refractory, castable
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属性 Properties 规格Type
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0-1 1-3 3-5mm |
0-100 0-200 0-320 |
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保证值 Guarantee Value |
典型值 Typical Value |
保证值 Guarantee Value |
典型值 Typical Value |
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化学成分 Chemical Composition |
Al2O3 |
≥99.2 |
99.5 |
≥99 |
99.2 |
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SiO2 |
≤0.1 |
0.06 |
≤0.30 |
0.08 |
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Fe2O3 |
≤0.1 |
0.04 |
≤0.20 |
0.10 |
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Na2O |
≤0.4 |
0.30 |
≤0.40 |
0.35 |
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2,用于磨料，喷砂，研磨，抛光Used for abrasives,blasting,grinding
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属性properties
规格Type |
粒度砂Grains |
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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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保证值 Guarantee Value |
典型值Typical Value |
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化学成分 Chemical Composition |
Al2O3 |
≥99 |
99.50 |
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SiO2 |
≤0.1 |
0.04 |
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Fe2O3 |
≤0.1 |
0.04 |
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Na2O |
≤0.35 |
0.23 |
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3，用于磨料，研磨，抛光等 Used for abrasives ,lapping,Polishing
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属性properties 规格 Type |
微粉 Micropowder |
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W |
W63 W50 W40 W28 W20 W14 W10 W7 W5 W3.5 W2.5 W1.5 W0.5 |
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FEPA |
F230 F240 F280 F320 F360 F400 F500 F600 F800 F1000 F1200 F1500 F2000 |
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JIS |
240# 280# 320# 360# 400# 500# 600# 700# 800# 1000# 1200# 1500# 2000# 2500# 3000# 4000# 6000# 8000# |
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保证值Guarantee Value |
典型值Typical Value |
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化学成分 Chemical Composition |
Al2O3 |
≥99 |
99.20 |
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SiO2 |
≤0.1 |
0.08 |
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Fe2O3 |
≤0.1 |
0.06 |
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Na2O |
≤0.4 |
0.32 |
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