白刚玉
白刚玉
白刚玉是以优质铝氧粉原料,经电熔提炼结晶而成,它的硬度略高于棕刚玉,韧性稍低、纯度高、自锐性好、磨削能力强、发热量小、效率高、耐酸碱腐蚀、耐高温、热稳定性好。其磨具适用于磨削高碳钢、高速钢等细粒度磨料。白玉刚段砂还可以用于精密铸造高级耐火材料。


white corundum
white corudum is made from high-quality alumina powder materal by electric melting,refining and crystalizing. its hardness is alittle higher than brown corundum with the feature of lower toughness, high purity ,good self-sharpening, well grinding, little calorific power, effective efficienecy,acid corrosion ,high temperature resistance and good thermal stability .its grinding tools are suitable to cut and grind high carbon steel, high speed steel and stailess steel. white corundum sand can also be used for
precision and high-refractory materials.

             类型

指标
低钠白刚玉 中钠白刚玉
段砂0-1 1-3
3-5(mm)
细粉0-180目
0-320目
段砂0-1 1-3
3-5(mm)
细粉0-180目
0-320目
保证值 典型值 保证值 典型值 保证值 典型值 保证值 典型值





(%)

α-AL2O3 ≥99 99.48 ≥98.5 99.23 ≥99 99.14 ≥99.5 99.12
SiO2 ≤0.2 0.15 ≤0.3 0.22 ≤0.4 0.12 ≤0.4 0.19
Fe2O3 ≤0.2 0.08 ≤0.25 0.08 ≤0.2 0.04 ≤0.25 0.08
Na2O ≤0.15 0.12 ≤0.25 0.18 ≤0.4 0.35 ≤0.5 0.23
主晶相 α-AL2O3
晶系 六方体
真密度(g/cm³) 白色
堆积密度(g/cm³) 1.75-19.5
莫氏硬度 9
线膨胀系数(1/℃) 8.3*10^-4
段砂颗粒尺寸(mm) 8-5 5-3 3-1 1-0
细粉(目) -80,-180,-240,-320
微粉(μm) 3-5 5-10
检验标准 GB/t3044-89
包装 塑编25公斤/袋或1000公斤/袋(或根据客户要求)
用途 耐火材料

                                                                                                                                                                            上一页