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| 物理破碎法改善钼粉性能对TZC钼合金顶头密度影响的研究 | |
| 引用本文： | 周伟,卢静,陈双柏,蒋兵.物理破碎法改善钼粉性能对TZC钼合金顶头密度影响的研究[J].中国钼业,2010,34(4):35-38. |
| 作者姓名： | 周伟 卢静 陈双柏 蒋兵 |
| 作者单位： | 1. 中南大学粉末冶金国家重点实验室,湖南,长沙,410083;自贡硬质合金有限责任公司,四川,自贡,643011 2. 中南大学粉末冶金国家重点实验室,湖南,长沙,410083 3. 自贡硬质合金有限责任公司,四川,自贡,643011 4. 湖南有色金属研究院,湖南,长沙,410015 |
| 摘 要： | 钼粉中普遍存在的粗大、聚集颗粒降低了钼粉的松装密度、摇实密度,使钼粉在松装时形成拱桥效应,影响钼粉的压制性能;进而在制备TZC钼合金顶头过程中直接形成粗大晶粒或因烧结长大而形成异常粗晶,造成顶头使用性能差。利用物理破碎机对钼粉进行机械粉碎试验后,消除了钼粉中的粗大、聚集颗粒,提高钼粉的松装密度、摇实密度,对改善钼粉的粒度组成分布具有非常明显的效果,进而也使钼合金顶头的密度相应得到提高。 |
| 关 键 词： | TZC钼合金顶头 物理破碎 粒度组成 |
THE INFLUENCE OF IMPROVING POWDER PROPERTIES BY PHYSICAL FRAGMENTATION ON DENSITY OF TZC MOLYBDENUM ALLOY PENETRATOR |
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| ZHOU Wei,LU Jing,CHEN Shuang-bo,JIANG Bing.THE INFLUENCE OF IMPROVING POWDER PROPERTIES BY PHYSICAL FRAGMENTATION ON DENSITY OF TZC MOLYBDENUM ALLOY PENETRATOR[J].China Molybdenum Industry,2010,34(4):35-38. | |
| Authors: | ZHOU Wei LU Jing CHEN Shuang-bo JIANG Bing |
| Affiliation: | 1.State Key Laboratory of Powder Metallurgy,Central South University,Changsha 410083,Hunan,China)(2.Zigong cemented carbide Co.,Ltd.,Zigong 643011,Sichuan,China)(3.Hunan Nonferrous Institue,Changsha 410015,Hunan,China) |
| Abstract: | Coarse and aggregate particles commonly found in molybdenum powder induces arch bridge effect easily,which reduces the bulk density and tap density,and affects the compacting properties.It＇s easy to form coarse grain during the fabricating process of TZC molybdenum alloy penetrator and abnormal coarse grain when sintering,which reduces usage capability.The coarse and aggregate particles will eliminate after they are pulverized by physical fragmentation,which increase the bulk density,tap density and particle size distribution of molybdenum powder,and the density of molybdenum alloy penetrator. |
| Keywords: | TZC molybdenum alloy penetrator physical fragmentation particle size distribution |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ | |