|
|
 |
|

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。 化学成分/Chemical composition
粒度范围Grit size range/化学成分Chemical composition |
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 |
0.20~0.45 |
≤0.50 |
≥98.20 |
0.45~1.00 |
≤0.55 |
≥97.40 |
1.00~2.00 |
≤0.55 |
F90~D150 |
≥98.50 |
≤0.55 |
≥98.20 |
≤0.60 |
≥97.00 |
≤0.60 |
F180~F220 |
≥98.00 |
≤0.60 |
≥97.80 |
≤0.70 |
≥96.50 |
≤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 |
堆积密度
Bulk density
G/cm3 |
显微硬度
Knoop hardness
Kg/mm2 |
α ~AL2O3 |
600~800 |
≥3.90 |
1.40~1.91 |
2200~2300 |
|
|
|
|
|
|
|
|