苏州百德喷砂磨料服务热线：13584832398
苏州百德喷砂磨料服务热线：13584832398
定义:
中文名称：半脆刚玉
英文名称：Half a crisp corundum
半脆刚玉是以优质铝矾土喷砂磨料为原料， 于电弧炉中经2000°Ｃ以上高温熔炼而成。具有耐高温、耐腐蚀、耐冲刷、气孔率低、热态性能稳定等优点。
产品简介:
半脆刚玉是百德公司为顺应国际市场需求而开发生产的新型喷砂磨料。半脆刚玉是以优质铝矾土喷砂磨料为原料，在亚白刚玉冶炼基础上，经过调整冶炼工艺及配比，于电弧炉中经2100℃以上高温熔炼后，采用特殊破碎处理加工工艺制成。因为它的脆性及韧性都介于白刚玉与棕刚玉之间，所以称之为半脆刚玉。半脆刚玉具有耐高温、耐腐蚀、耐冲刷、气孔率低、热态性能稳定等优点。磨粒有良好的自锐性，磨削锋利而不易烧伤工件，当半脆刚玉磨粒进行后处理之后，增加了相对耐磨能力。特别适用于热敏性钢及合金、硬度较低的有色金属材料如铝、铜、锌、铅和非金属材料如木材、塑料的磨削。广泛应用于固结磨具的生产制造。
| 粒度号 | F12 | F14 | F16 | F20 | F24 | F30 | F36 | F40 | ||
| 堆积密度 | 1.85 | 1.82 | 1.80 | 1.78 | 1.76 | 1.74 | 1.72 | 1.69 | ||
| 粒度号 | F46 | F54 | F60 | F70 | F80 | F100 | F120 | F150 | ||
| 堆积密度 | 1.67 | 1.65 | 1.63 | 1.60 | 1.57 | 1.54 | 1.51 | 1.49 | ||
| 粒度号 | F180 | F220 | ||||||||
| 堆积密度 | 1.47 | 1.45 | ||||||||
| 粒度范围 | 化学指标(%) | |||
| Al2O3 | Fe2O3 | SiO2 | TiO2 | |
| 4#—100# | ≥97.5 | ≤0.15 | ≤0.5 | ≤1.5 |
| 120#—240# | ≥97.0 | ≤0.2 | ≤0.8 | ≤1.5 |
主要性能及用途：
半脆刚玉是综合了棕、白刚玉的部分优点而研制的一种高档刚玉喷砂磨料产品，脆性介于白刚玉和棕刚玉之间,磨削性能独特,应用范围较广.
半脆刚玉有较好韧性和自锐性。可用于陶瓷磨具、树脂磨具及涂附磨具的生产制造。生产的固结磨具有较高的耐用度，良好的自锐性和保持性。在相同的条件下，加工某些工件时，工件的表面质量，加工效率及磨具的耐用度均优于棕、白、铬、单晶刚玉。用于粗磨可提高加工效率，用于精磨可提高工件的表面质量。
半脆刚玉生产的固结磨具可用来加工普通工业用钢材、轴承钢、各种不锈钢，工具钢。Cr、w、Mo、V、Co含量较低的特种合金钢，部分铸铁，各种有色金属，如含Cu、Ni、Mg的铝合金，含S、Zn的铜，含AL、Zn的镁合金等。
半脆刚玉生产的涂附磨具除加工上述的金属材料外，还适用于加工合成材料，各种胶合板、层压板、薄木板、硬木、软木、漆器、皮革等。
英文说明：
Semi-friable fused alumina is a new type of abrasive developed by our plant to meet the demands of the international market. With high quality bauxite as raw material, it is produced in the based of smelting the vice-white fused alumina, adjusting smelting process and ratio of raw materials, melting at the high temperature of above 2100℃ in the electric furnace, and using a special broken treatment technique. Since its hardness and toughness is between white fused alumina and brown fused alumina, it is called semi-friable fused alumina. It is characterized by high temperature resistance, corrosion and erosion resistance, low apparent porosity and stable thermal stability. Its grain is characterized by strong self-sharpening, sharp grinding edges and not easy to burn workpiece. After the grain of semi-friable fused alumina is processed, the relative ability of grinding resistance of semi-friable fused alumina increase, which is particularly applicable for grinding thermosensitive steel and alloy, low hardness, lower non-ferrous metal materials such as aluminum, copper, zinc, plumbum and non-metallic materials such as wood, plastic, and it is widely used for the production of bonded abrasives.
Bulk Density Testing Value (g/cm3)
| Grit NO. | F12 | F14 | F16 | F20 | F24 | F30 | F36 | F40 | ||
| B.D. | 1.85 | 1.82 | 1.80 | 1.78 | 1.76 | 1.74 | 1.72 | 1.69 | ||
| Grit NO. | F46 | F54 | F60 | F70 | F80 | F100 | F120 | F150 | ||
| B.D. | 1.67 | 1.65 | 1.63 | 1.60 | 1.57 | 1.54 | 1.51 | 1.49 | ||
| Grit NO | F180 | F220 | ||||||||
| B.D | 1.47 | 1.45 | ||||||||
Semi-friable fused alumina:
| Grit No. | Chemical composition(%) | |||
| Al2O3 | Fe2O3 | SiO2 | TiO2 | |
| 4#—100# | ≥97.5 | ≤0.15 | ≤0.5 | ≤1.5 |
| 120#—240# | ≥97.0 | ≤0.2 | ≤0.8 | ≤1.5 |