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90-92%含量氧化铝抛光粉W5 W3.5 用于复合材料抛光
品名：棕刚玉
别名：金刚砂，人造金刚砂，棕色氧化铝砂，棕色电熔氧化铝，棕色氧化铝抛光粉
磨料代号：A,BFA
英文名称：Brown Aluminum oxide, Brown Fused Alumina, BFA grit, Brown corundum, Brown Alox, Electrocorundum 14A，brown aluminum oxide polishing powder
90-92%含量氧化铝抛光粉W5 W3.5 用于复合材料抛光产品简介：
棕刚玉的主要成分是氧化铝，它是以铝矾土为原料，无烟煤，铁霄，在电弧中经2000度以上高温熔炼制成。然后经过磨机粉碎整形，磁选去铁，筛分成多种粒度，其质地致密、硬度高，韧性好。棕刚玉微粉的粒度分级是水洗溢流、自然沉淀烘干，纯净度更高，粒度范围窄无大颗粒，适合研磨抛光。
一级棕刚玉的硬度和耐火性能是其中的***，通常用于喷砂研磨和制成磨具。棕刚玉的硬度接近白刚玉，比天然金刚砂高。棕刚玉的韧性比白刚玉好，体积密度高，自锐性磨削力略低，适合进行大规模的喷砂和快速研磨。棕刚玉适合的研磨对象为碳钢、铝合金、铁合金、各种非金属等。
The main component of brown corundum is alumina, which is made from bauxite as raw material, smokeless coal, iron oxide, and melted at a high temperature of over 2000 degrees Celsius in an electric arc. Then it is crushed and shaped by a grinder, magnetic separated to remove iron, and sieved into various particle sizes, resulting in a dense texture, high hardness, and good toughness. The particle size classification of brown aluminum oxide micro powder is achieved through water washing overflow, natural precipitation drying, resulting in higher purity and a narrow particle size range without large particles, making it suitable for grinding and polishing.
The hardness and fire resistance of first-class brown corundum are among the best, and it is usually used for sandblasting, grinding, and making grinding tools. The hardness of brown corundum is close to that of white corundum and higher than that of natural diamond sand. Brown corundum has better toughness than white corundum, higher bulk density, and slightly lower self sharpening grinding force, making it suitable for large-scale sandblasting and rapid grinding. Brown corundum is suitable for grinding carbon steel, aluminum alloys, ferroalloys, various non-metallic materials, etc.
产品展示：
90-92%含量氧化铝抛光粉W5 W3.5 用于复合材料抛光的主要技术指标：
主要矿物 | α-Al2O3 |
CAS编号 | 1344-28-1 |
莫氏硬度 | 9.0 |
显微硬度 | 2000-2200kg/mm2 |
熔点 | 2200 ℃ |
使用温度 | 1850℃ |
比重 | 3.95g/cm3 |
堆积密度(LPD): | 1.53-1.99 g/cm3 |
颜色 | 棕色，咖啡色，栗色 |
晶形 | 三方晶系 |
研磨级棕刚玉的特点：
1. 硬度高，切削能力强。
2. 纯度高，氧化铝含量93-95.5%，硅铁含量低。
3. 粒度均匀。棕刚玉的粒度分布符合FEPA标准，对各个筛网的颗粒占比都有严格的要求。细粉含量低。
4. 韧性好，颗粒抗破碎能力强。
5. 水溶性氯化物含量低，电导率低。
化学成分：
棕刚玉类型 | 型号 | 化学成分 | |||
AL2O3 | Fe2O3 | Si2O | Ti2O | ||
倾倒炉F砂 | F4-F80 | ≥94.5% | ≤0.25% | ≤1.0% | 2.0-3.4% |
F90-P150 | ≥94.5% | ≤0.25% | ≤1.0% | 2.0-3.4% | |
P180-P220 | ≥94% | ≤0.25% | ≤1.0% | 2.0-3.6% | |
固定炉F砂 | F8-F80 | ≥94% | ≤0.3% | ≤1.5% | 2.2-3.8% |
F90-F150 | ≥93% | ≤0.3% | ≤1.5% | 2.5-4.0% | |
F180-F240 | ≥92% | ≤0.3% | ≤1.5% | 2.5-4.0% | |
P砂 | P24-P80 | ≥94.5% | ≤0.25% | ≤1.0% | 2.0-3.4% |
P100-P150 | ≥94.5% | ≤0.25% | ≤1.0% | 2.0-3.4% | |
P180-P220 | ≥94% | ≤0.25% | ≤1.0% | 2.0-3.6% | |
微粉 | W63-W0.5 | ≥93.5% | ≤0.5% | ≤1.8% | ≤4.0% |
F230-F1200 | ≥93.5% | ≤0.5% | ≤1.8% | ≤4.0% | |
240#-6000# | 88-92% | ≤0.5% | ≤1.8% | ≤4.0% | |
棕刚玉的用途：
棕刚玉类型 | 用途 |
倾倒炉F砂 | 陶瓷砂轮，重负荷砂轮 陶瓷制品 |
固定炉F砂 | 合金压铸件，合金铸件，碳钢，模具钢，铜合金、铝合金、雾化玻璃、塑料、亚克力等材料的喷砂除氧化层、表面钝化、表面清理。 压铸厨具、钻杆、轴套、接头、轮胎模具、合金散热器、发电机叶轮、重型机械配件等材料的喷砂。 树脂砂轮 耐磨地坪、地坪砂浆 耐火骨料 |
P砂 | 涂附磨具 美甲工具 |
二级三级棕刚玉 | 大型喷砂 水刀切割 耐磨材料 |
棕刚玉的生产流程：
棕刚玉的包装：
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