砂轮30目36目60目铬刚玉砂
铬刚玉化学指标:
化学成分
Chemical composition
粒度范围
Grit size range
低铬
Low chromium
中铬
Medium chromium
高铬
High chromium
Al2O3
(%)
Cr2O3
(%)
Na2O
(%)
Al2O3
(%)
Cr2O3
(%)
Na2O
(%)
Al2O3
(%)
Cr2O3
(%)
Na2O
(%)
F12-F80
≥98.50
0.2-0.45
≤0.50
≥98.20
>0.45-1.0
≤0.55
≥97.40
>1.0-2.0
≤0.55
F90-F150
≥98.50
≤0.50
≥98.20
≤0.60
≥97.00
≤0.60
F180-F220
≥98.50
≤0.50
≥98.80
≤0.70
≥96.50
≤0.7
铬刚玉物理性能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
铬刚玉图片: