| 水气联合雾化法制备铁基预合金粉末及其在金刚石工具中的应用 |
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| 引用本文： | 刘坤杰,乐晨,赵放,唐明强,吴成义. 水气联合雾化法制备铁基预合金粉末及其在金刚石工具中的应用[J]. 金刚石与磨料磨具工程, 2018, 38(2): 32-36. DOI: 10.13394/j.cnkij.gszz.2018.2.0007 |
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| 作者姓名： | 刘坤杰 乐晨 赵放 唐明强 吴成义 |
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| 作者单位： | 1. 泉州医学高等专科学校, 福建 泉州 362000;2. 泉州天智合金材料科技有限公司, 福建 泉州 362000;3. 北京科技大学 粉末冶金研究所, 北京 100083 |
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| 摘 要： | 采用水气联合雾化工艺制备了金刚石工具用铁基预合金粉末，对水气联合雾化法、常规水雾化法制备的预合金粉末进行物性对比，并对相应地预合金粉末烧结块的断口形貌、力学性能进行比较与分析。结果表明:水气联合雾化工艺制备的预合金粉末氧含量较低，球形度好，粉末粒度细；水气联合雾化制备的预合金粉末TZ611烧结块断口形貌呈典型的韧性断裂和沿晶断裂特征；烧结块相对密度、硬度和抗弯强度等力学性能显著提高，对金刚石颗粒把持更好。采用水气联合雾化工艺制备的预合金粉末制造的圆锯片切割更为锋利，且使用寿命为常规水雾化粉末的1.62倍。
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| 关 键 词： | 水气联合雾化 铁基预合金粉末 金刚石工具 |
Preparation of iron-based pre-alloyed powders by water-gas atomizationand its application in diamond tools |
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| LIU Kunjie,LE Chen,ZHAO Fang,TANG Mingqiang,WU Chengyi. Preparation of iron-based pre-alloyed powders by water-gas atomizationand its application in diamond tools[J]. Diamond & Abrasives Engineering, 2018, 38(2): 32-36. DOI: 10.13394/j.cnkij.gszz.2018.2.0007 |
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| Authors: | LIU Kunjie LE Chen ZHAO Fang TANG Mingqiang WU Chengyi |
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| Affiliation: | 1. Quanzhou Medical College, Quanzhou 362000, Fujian, China;2. TIZ Advanced Alloy Technology Co., Ltd., Quanzhou 362000, Fujian, China;3. Institute of Powder Metallurgy, University of Science and Technology Beijing, Beijing 100083, China |
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| Abstract: | The iron-based pre-alloyed powders for diamond tools were produced by water-gas atomization. The physical properties of powders prepared by different processes including conventional water atomization and water-gas water atomization were compared, accordingly powders were sintered to segments and the fracture morphology and mechanical properties of the segments were observed, compared and analyzed respectively. The results showed that the iron-based pre-alloyed powder prepared by water-gas atomization with low oxygen content, is of spherical shape and fine particle size. The fracture morphology of TZ611 sintered segments using powders produced by water-gas atomization, exhibits typical ductile fracture and intergranular fracture characteristics.The mechanical properties, such as the relative density, hardness and bending strength of the segments, are greatly improved, which leading to better bonding force between the matrix and diamond. The circular blade made of pre-alloyed powder prepared by water-gas atomization is more sharp, and the service life is 1.62 times that of the conventional water atomization powder. |
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