Sn对蠕墨铸铁显微组织和切削加工性能的影响  

Effect of Sn on Microstructure and Machinability of Vermicular Graphite Iron

作　　者：郑冰[1] 任凤章[1,2] 李锋军[3] 张旦闻[4] 熊毅[1] 魏世忠[1] 

机构地区：[1]河南科技大学材料科学与工程学院,河南洛阳471023 [2]有色金属共性技术河南省协同创新中心,河南洛阳471023 [3]中国一拖集团有限公司,河南洛阳471003 [4]洛阳理工学院机电工程系,河南洛阳471023

出　　处：《铸造》2016年第2期137-140,共4页Foundry

基　　金：河南省科技创新人才计划(144200510009);河南省国际科技合作计划项目(152102410035);长江学者和创新团队发展计划基金项目(IRTl234);河南科技大学科技创新团队(2015XTD006)

摘　　要：试验浇注了蠕化率均为95%的加入0.08wt.%Sn和不加Sn两种蠕墨铸铁。对比研究了它们的微观组织、力学性能和切削加工性能。合金元素Sn的加入,使蠕虫状石墨得到了细化,并且分布更加均匀,同时,促进了珠光体的形成,珠光体的含量明显增加。在使蠕墨铸铁的强度和硬度提高的同时,也使切削抗力明显增大。In this experiment, two kinds of vermicular graphite cast iron were cast with the 95 percent of vermiculation, and one of them was added 0.08wt.% Sn and the other was not added. Their microstructure, mechanical properties and machinability were compared. By adding 0.08wt.% Sn in vermicular graphite cast iron, the vermicular graphite becomes finer and more uniform distribution. Meanwhile, Sn promotes the formation ofpearlite and obviously increases the content ofpearlite. With the addition of Sn, the strength and hardness of the vermicular graphite cast iron are increased, and the cutting force is also obviously increased.

关 键 词：SN 蠕墨铸铁 切削加工性能 显微组织 拉伸强度 硬度 

分 类 号：TG143.49[一般工业技术—材料科学与工程]