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铬刚玉规格书.pdf铬刚玉是以氧化铝为主要原料，适配氧化铬等。经高温熔炼而成。呈粉红色、硬度与白刚玉近似，韧性比白刚玉高。用其制造的磨具，耐用度好，磨加工光洁度高。适用于量具，机床主轴，仪表零件、螺纹工件及样板磨等精密磨削。
lts main material is bayer alumina,which is electrically fused in high temperature,being added with the right quantity of oxidized chromium. lt is pink.lts hardness is close to,but toughness higher than that or WA.The abrasive tools made of it feature excellent durability and high processing cleanness,which are suitable for the precision grinding of the measuring tools,lathe main shafts,instruments and apparatus parts,threading workpieces and samplers,etc.
化学成分：Chemical composition
|
低铬 Low chromium |
中铬 Medium chromium |
高铬 High chromium |
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|
Al2O3 （%） |
Cr2O3 （%） |
Na2O （%） |
Al2O3 （%） |
Cr2O3 （%） |
Na2O （%） |
Al2O3 （%） |
Cr2O3 （%） |
Na2O （%） |
|
≥98.50 |
0.20-0.45 |
≤0.50 |
≥98.20 |
0.45-1.00 |
≤0.55 |
≥97.40 |
1.00-2.00 |
≤0.55 |
|
≥98.50 |
0.20-0.45 |
≤0.50 |
≥98.20 |
0.45-1.00 |
≤0.60 |
≥97.00 |
1.00-2.00 |
≤0.60 |
|
≥98.50 |
0.20-0.45 |
≤0.50 |
≥98.80 |
0.45-1.00 |
≤0.70 |
≥96.50 |
1.00-2.00 |
≤0.70 |
物理性能：Physical property
|
基本矿物 Basic minerals |
晶体尺寸 Crystal size μm |
真比重 True density g/cm3 |
堆积密度 Bulk density g/ cm3 |
显微硬度 Knoop hardness kg/mm2 |
|
α-Al2O3 |
600-2000 |
≥3.90 |
1.40-1.91 |
2200-2300 |
用途：
1.喷砂，研磨，抛光等
2，生产砂轮，磨头等磨具
3，适用于量具，机床主轴，仪表零件、螺纹工件及样板磨等精密磨削等
常规生产粒度：F24 F30 F36 F46 F54 F60 F70 F80 F90 F100 F120 F150 F180 F220
24# 30# 36# 46# 54# 60# 70# 80# 90# 100# 120# 150# 180# 220#