高密度铁基粉末冶金零件制备技术  

Preparation processes of high density iron-based powder metallurgy parts

作　　者：包崇玺 曹阳 易健宏[2] 彭元东[3] 柳学全 方东 王劲松 何灵敏 BAO Chong-xi;CAO Yang;YI Jian-hong;PENG Yuan-dong;LIU Xue-quan;FANG Dong;WANG Jin-song;HE Ling-min(NBTM New Materials Group Co.,Ltd.,Ningbo 315191,China;Faculty of Materials Science and Engineering,Kunming University of Science and Technology,Kunming 610031,China;Powder Metallurgy Research Institute,Central South University,Changsha 410083,China;Advanced Technology&Materials Co.,Ltd.,Beijing 100081,China)

机构地区：[1]东睦新材料集团股份有限公司,宁波315191 [2]昆明理工大学材料科学与工程学院,昆明650031 [3]中南大学粉末冶金研究院,长沙410083 [4]安泰科技股份有限公司,北京10081

出　　处：《粉末冶金技术》2022年第5期458-464,470,共8页Powder Metallurgy Technology

摘　　要：介绍了东睦新材料集团股份有限公司已经使用的高密度铁基粉末冶金产品制造技术,包括温压成形、温模压制、复压复烧等,并讨论了这些技术的优缺点。所述高密度铁基粉末冶金零件制备技术虽可以提升粉末冶金零件的密度,强度也达到较高的水平,但是零件的精度及粗糙度等尚不能满足高端应用的要求,仍需进一步机加工。未来仍需提升粉末冶金模具的制造精度、粉末特性和工艺稳定性,开发低成本、高精度、高强度的烧结铁基零件制备技术。The preparation technologies of high density iron based powder metallurgy products used in NBTM were introduced in this paper,including warm compaction,warm die compaction,double-pressing and double-sintering,and the advantages and disadvantages of these technologies were discussed.Although the preparation technologies described in this paper can improve the density and strength of powder metallurgy parts to a high level,the precision and roughness of the parts cannot meet the requirements of high-level applications,and the further machining is still needed.For the iron-based powder metallurgy parts,the precision of powder metallurgy die manufacturing,the powder characteristics,and the process stability are still needed to improve in the future,and the new sintered iron based parts preparation technology with low-cost,high-precision,and high-strength should be developed.

关 键 词：温压成形 温模压制 复压复烧 熔渗 表面致密化 模壁润滑 粉末锻造 

分 类 号：TF124[冶金工程—粉末冶金]