'
F30#黑刚玉磨料 黑刚玉抛光砂 黑刚玉喷砂磨料
黑刚玉是于电弧炉中，将铝矾土熔炼而制得的一种以a-AL2O3和铁尖晶石为主矿相的灰黑色结晶体，具有韧性高、耐高温、热太性能稳定的特点。
用于自由研磨，如制品电镀前的打磨工粗磨，主要用于不锈钢，金属制品，光学玻璃，竹木制品的抛光和喷砂，又是制造树脂砂轮，切割片，纱布的新颖磨料。本公司黑刚玉黑刚玉磨料基本粒集中，切削力强，韧性大，刚柔相济，耐磨性好，工效高。是磨削抛光、喷砂不锈钢制品的最理想产品。 黑刚玉理化指标:
规格 | 主要化学成分% | Al2O3 | Fe2O3 | SiO2 | BA—Ⅰ | 81—85 | 9—11 | ≤8 | BA—Ⅱ | 75—80 | 10—12 | ≤10 |
|
黑刚玉物理性能指标： | |
项目 | 指标 | 颜 色 | 黑色 | 晶形 | 三方晶系 | 硬度（莫氏） | ≥9.0 | 熔点（℃） | 2050 | 最高使用温度（℃） | 1850 | 真密度（g/cm3） | ≥3. 50 | 线膨胀系数（0—1600℃） | 7—9 |
|
Black corundum made by smelting bauxite in the electric arc furnace, it is crystalline solid of ash black color and characterized by its High-ductility, high temperature stability.
Black corundum is mainly suitable for free grinding, such as coarse grinding before electroplating products, mainly for polishing and sandblasting of stainless steel, fabricated metal products. Our company’s black corundum has concentrated abrasive grain with strong cutting, great toughness, good abrasion resistance, high efficiency. It is the ideal product for grinding polishing, sand blasting and stainless steel products.
Black corundum’s physical and chemical indicators:
Specifications | 主要化学成分% Main chemical composition% |
Al2O3Al2O3 | Fe2O3Fe2O3 | SiO2SiO2 |
BA—ⅠBA-Ⅰ | 81—8581-85 | 9—119-11 | ≤8≤ 8 |
BA—ⅡBA-Ⅱ | 75—8075-80 | 10—1210-12 | ≤10≤ 10 |
Black corundum’s physical performance indicators:
Item | 指标Indicators |
颜色Color | 黑色Black |
晶形Crystal | 三方晶系Trigonal system |
硬度（莫氏）Hardness (Mohs) | ≥9.0≥ 9.0 |
熔点（℃）Melting point (℃) | 20502050 |
最高使用温度（℃）The maximum temperature (℃) | 18501850 |
真密度（g/cm3）True Density (g/cm3) | ≥3. 50≥ 3. 50 |
线膨胀系数（0—1600℃）Linear expansion coefficient (0-1600 ℃) | 7—97-9 |
'
