铁基合金粉末低温温压工艺研究  

Warm Compaction Technology at Lower lemperatures for Iron Based Alloy Powders

作　　者：曹顺华[1] 林信平[1] 李炯义[1] 李元元[2] 邵明[2] 

机构地区：[1]中南大学粉末冶金国家重点实验室,湖南长沙410083 [2]华南理工大学机械工程学院,广东广州510640

出　　处：《机械工程材料》2005年第7期38-40,49,共4页Materials For Mechanical Engineering

基　　金：国家"863"高技术计划资助项目(2001AA337010)

摘　　要：对铁基合金粉末低温温压工艺进行了较为系统的研究,考察了粉末温度、模具温度、润滑剂含量和压制压力对温压密度的影响。结果表明:较佳的模具、粉末温度分别为120℃和100℃;粉末中较佳的润滑剂含量为0.65%;当压力为686MPa时,Fe-1.5Cu-0.5C和Fe-1.5Ni-0.5Mo-0.5Cu-0.5C粉末压坯密度分别达到了7.42,7.41g/cm3;两种粉末的温压坯件经过烧结后密度进一步提高,合金元素镍、钼等具有优良的烧结强化效果。The effects of powder temperature, die temperature, lubricant content and compacting pressure on the behavior of warm compaction of iron based alloy powders at lower temperatures were studied. The optimum die temperature and powder temperature were 120 'C and 100 'C respectively. For Fe-1. 5Cu-0. 5C and Fe-1. 5Ni 0. 5Mo-0. 5Cu-0. 5C powders, the densities of 7. 42 and 7. 41 g/cm3 could be achieved at 686 MPa respectively. For both powders, shrinkage took place during sintering, which was beneficial to further increasing density.

关 键 词：铁基合金 低温温压 润滑剂 压制压力 

分 类 号：TF124.3[冶金工程—粉末冶金]