| 品牌 | 東升 |
|---|
棕剛玉
棕剛玉是以鋁礬土為主要原料，經(jīng)高溫溶煉而成。呈棕褐色、硬度高、韌性大。用其制造的磨具，適用于碳素鋼、可鍛鑄鐵、硬青銅等的磨削。此外在耐火材料、化工添加劑、精密鑄造及防滑材料等方面也有廣泛應用。
The main material lr brown fused alumina is bauxite.which is electrically fused in high temperature.it is brown and featured high hardness and toughness.The abrasive tools made of it are suitable for the grinding of carbon steel.malleable cast iron,hard bronze.etc.ln addition.they are used as refractory materials,chemical additive,precision founding and anti-sliding materials
化學成份：
| 牌號（代號） Code | 粒度范圍 Grit size range | 化學成分%Chemical composition% | ||
| Al2O3 | TiO3 | CaO | ||
| A A-P1 | F4-F80 (P12-P80) | 95.0-97.5 | 1.5-3.8 | ≤0.45 |
| F90-F150 (P100-P150) | 94.0-97.5 | |||
| F180-F220 (P180-P220) | 93.0-97.5 | |||
| F220(P220) | ≥92.0 | |||
物理性能：
Physical property
| 基本礦物 Basic minerals | 晶體尺寸 Crystal size μm | 真比重 True density g/cm3 | 堆積密度 Bulk density g/ cm3 | 顯微硬度 Knoop hardness kg/mm2 |
| α-Al2O3 | 300-12000 | ≥3.90 | 1.5-1.95 | 1800-2200 |
Water-washed P grains of brown fused alumina
| 粒度號Grit size | 清潔度Cleanness |
| AP50 | 120 |
| AP80 | 130 |
The shaped brown fused slumina
| 粒度號 Grit size | 堆積密度 Bulk density g/cm3 | 粒度號 Grit size | 堆積密度 Bulk density g/cm3 |
| F24 | 1.8-1.95 | F80 | 1.61-1.71 |
| F30 | 1.77-1.90 | F90 | 1.59-1.71 |
| F36 | 1.75-1.90 | F100 | 1.57-1.68 |
| F40 | 1.73-1.86 | F120 | 1.54-1.68 |
| F46 | 1.70-1.84 | F150 | 1.50-1.65 |
| F54 | 1.68-1.82 | F180 | 1.48-1.62 |
| F60 | 1.66-1.80 | F220 | 1.45-1.55 |
| F70 | 1.63-1.76 | ||