流动温压成型铁基粉末冶金复杂件的脱脂工艺  

Degreasing behavior of iron-based powder metallurgy complex parts by warm flow compaction

作　　者：胡昌旭[1] 倪东惠[1] 郑军君[1] 肖志瑜[1] 李元元[1] 

机构地区：[1]华南理工大学机械与汽车工程学院,国家金属材料近净成形工程技术研究中心,广州510640

出　　处：《北京科技大学学报》2010年第3期336-339,共4页Journal of University of Science and Technology Beijing

基　　金：国家自然科学基金资助项目(No.50574041);广东省自然科学基金重点项目(No.06105411);教育部新世纪优秀人才项目(No.NCET-05-0739)

摘　　要：使用水雾化铁粉等原料制备十字形试样,对脱脂工艺、微观组织进行了分析,得到的理想脱脂工艺为:先以较快的速率升温到160℃,然后以1℃.min-1的速率升温到300℃,保温0.5h,再以1.5℃.min-1的速率升温到450℃,保温0.5h.烧结在1300℃进行.实验结果表明,通过优化脱脂工艺,使用流动温压工艺,可以制备出成本低廉、形状复杂的结构件.Water-atomized iron powders were used by warm flow compaction to fabricate cross-shaped parts.The degrease process and microstructure of sintered parts were investigated.The optimal degrease process is to raise the temperature from ambient temperature to 160 ℃,then raise to 300 ℃ at a rate of 1 ℃·min^-1 and hold at 300 ℃ for 0.5 h,followed by raising the temperature to 450 ℃ at a rate of 1.5 ℃·min^-1 and hold at 450 ℃ for 0.5 h.Sintering was carried out at 1 300 ℃.It is shown that at the proper degreasing parameters the warm flow compaction method can produce complex-shaped components with low cost.

关 键 词：粉末冶金 铁粉 温压 脱脂 

分 类 号：TF125.1[冶金工程—粉末冶金]