金属粉末流动温压成形的特点及其技术问题分析  

Characteristics of Warm Flow Compaction Forming of Metallic Powder and Its Techonogical Problem Analysis

作　　者：肖志瑜[1] 张菊红[1] 邵明[1] 李元元[1] 

机构地区：[1]华南理工大学,广州510640

出　　处：《中国机械工程》2005年第3期257-259,281,共4页China Mechanical Engineering

基　　金：国家自然科学基金资助重点项目(50135020);广东省科技计划项目(2004B10301018)

摘　　要：介绍了金属粉末流动温压成形技术的发展动态及其技术特点,分析了流动温压成形的关键技术问题。流动温压成形的关键是提高粉末的流动性,其实现方法有三种,一是向粉末中加入精细粉末,二是加入比传统粉末冶金工艺稍多但比金属粉末注射成形少得多的特殊粘结剂和润滑剂,三是加入表面活化剂或增塑剂,以提高粉末体的流变性能。流动温压成形结合了常规温压成形和金属注射成形的优点,既克服了传统粉末冶金技术在成形方面的不足,又避免了注射成形技术的高成本,具有广阔的应用前景。This paper gave a brief introduction to the development and the characteristics of warm flow compaction(WFC), some technological problems were also analysed in detail. The key of warm flow compaction forming is to increase the flowability of the powder, there are three different ways to achieve this: firstly, add in fine particles; secondly add more special lubricant and binder when compared to conventional powder metallurgy but not as much as those in metal powder injection molding(MIM); and lastly, add in surface activation agent to increase the rheological property of the powder. Warm flow compaction utilized the special features of warm compaction and metal injection moulding. WFC solved some problems in conventional P/M to form complex parts and lowered high costs of MIM. Thus high potential in the broad applications of WFC is expected.

关 键 词：粉末冶金 温压 流动温压 金属注射成形 

分 类 号：TF124[冶金工程—粉末冶金] TB331[冶金工程—冶金物理化学]