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| 粉末温压成形过程中的力学行为 | |
| 引用本文： | 王德广,周瑞庭,解挺,焦明华,俞建卫,尹延国,吴玉程.粉末温压成形过程中的力学行为[J].机械工程材料,2007,31(5):66-68,71. |
| 作者姓名： | 王德广 周瑞庭 解挺 焦明华 俞建卫 尹延国 吴玉程 |
| 作者单位： | 1. 合肥工业大学材料科学与工程学院,安徽合肥,230009 2. 安徽鑫科新材料股份有限公司,安徽芜湖,241009 3. 合肥工业大学摩擦学研究所,安徽合肥,230009 |
| 基金项目： | 安徽省科技攻关项目 , 安徽省合肥市科研项目 |
| 摘 要： | 利用MSC/Marc有限元仿真软件,采用基于更新拉格朗日方法的热-机耦合分析方法,模拟了铁基粉末温压工艺过程,研究了压制成形过程中的力学行为.结果表明:对于圆柱形粉末冶金制品,在获得同等压坯密度的情况下,随着润滑条件的改善,压制力、侧压力、脱模力均有所降低,同时压坯应力分布更加均匀,压坯边角处应力集中现象有所缓解,这对于提高压坯性能特别是力学性能十分有利. |
| 关 键 词： | 粉末 密度 有限元 温压成形 粉末冶金制品 温压 成形过程 力学行为 Process Warm Compaction Powder 力学性能 现象 应力集 边角 均匀 应力分布 压坯密度 脱模力 侧压力 压制力 改善 润滑条件 情况 |
| 文章编号： | 1000-3738（2007）05-0066-03 |
| 修稿时间： | 2006-10-182007-03-07 |
The Mechanical Behavior of Powder Warm Compaction Process |
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| WANG De-guang,ZHOU Rui-ting,XIE Ting,JIAO Ming-hua,YU Jian-wei,YIN Yan-guo,WU Yu-cheng.The Mechanical Behavior of Powder Warm Compaction Process[J].Materials For Mechanical Engineering,2007,31(5):66-68,71. | |
| Authors: | WANG De-guang ZHOU Rui-ting XIE Ting JIAO Ming-hua YU Jian-wei YIN Yan-guo WU Yu-cheng |
| Affiliation: | 1,3. Hefei University of Technology, Hefei 230009, China; 2. Anhui Xinke New Material Co Ltd, Wuhu 241009, China |
| Abstract: | The Fe-based powder warm compaction process was simulated by the finite element analysis software which is MSC/MARC. The thermal mechanically coupled analysis method based on the updated Lagrangian Method was applied to simulate this process, the mechanical behavior of warm compaction process was scudied, The results indicate that for cylindrical powder metallurgic products, pressing pressure, side pressure and ejecting force decrease with improving lubrication condition in the case of obtaining equivalent green density. At the same time distribution of green stress is more even, the stress concentration phenomenon of green edge is relaxed, this is favorable for improving green properties, especially mechanical properties. |
| Keywords: | powder density FE warm compaction |
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