棕刚玉
代号:BC-R-BFA
棕刚玉是以铝矾土为主要原料,经高温熔炼而成。成棕褐色、硬度高、韧性大。用其制造的磨具,适用于碳钢、可锻铸铁、硬青铜等的磨削。此外在耐火材料、化工添加剂、精密铸造及防滑材料等方面也有广泛应用。
化学指标Chemical composition:
Code | Grit size range | Chemical composition (%) | ||
AL2O3 % | TiO2 % | CaO % | ||
BFA-FEPA F BFA-FEPA P | F4-F80 | 95.00-97.50 | 1.5-3.8 | ≤0.45 |
F90-F150 | 94.00-97.50 | |||
F180-F220 | 93.00-97.50 | |||
F220(P220) | ≥92.00 |
物理性能Physical property:
Basic minerals | Crystal size(u m) | True density(ɡ/cm?) | Bulk density(ɡ/cm?) | Hardness㎏/mm? |
Alpha-Al2O3 | 400-800 | ≥3.90 | 1.40-1.95 | 1800-2200 |
堆积密度Bulk Density
Grit size | Bulk density(ɡ/cm?) | Grit size | Bulk density(ɡ/cm?) |
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 |
颗粒形状Grain Shape
Code | Shape | Process machinery |
BFA-R-S01 | Angular | Rolling Machine & Ball milling |
BFA-R-S02 | Blocky | Ball milling & shape treatment machine |
粒度标准 Standard: FEAP- F (Bonded abrasives), FEPA- P (Coated abrasives)
可供粒度:Gritavailable: Grit FEPA F12 – F220#. F240-F2000# (Micro powder)
Grit FEPA P12-220#. P240-P2500# (Micro powder)
Other sizes are also available on request.