蠕化剂、炉料对蠕墨铸铁组织、力学性能和切削力的影响  

Effect of vermicular agents,charges on microstructure,mechanical properties and cutting force of vermicular graphite iron

作　　者：李宗亮[1] 任凤章[1,2] 熊毅[1] 王宇飞[1] 黄胜操[3] 张旦闻[4] 

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工艺材料研究所,河南洛阳471003 [4]洛阳理工学院机电工程系,河南洛阳471023

出　　处：《材料热处理学报》2017年第8期96-102,共7页Transactions of Materials and Heat Treatment

基　　金：河南省国际科技合作计划项目(152102410035);河南省科技创新人才计划(144200510001);河南省高校科创新人才支持计划项目(17HASTIT026);河南科技大学科技创新团队(2015XTD006)

摘　　要：以Z14生铁和高纯生铁为主要炉料熔炼两炉铁水,每一炉铁水分为两包进行浇铸,并分别采用蠕化剂FeSiZnRE15Mg3和FeSiRE6Mg6进行蠕化处理,制备得到了4种蠕墨铸铁。对比4种蠕墨铸铁的微观组织及切削力。研究表明:与FeSiZnRE15Mg3蠕化处理相比,FeSiRE6Mg6蠕化处理的两种炉料蠕墨铸铁均具有较高的蠕化率和较小的切削力;与以高纯生铁为主要炉料的蠕铁相比,以Z14生铁为主要炉料的蠕铁同样具有较高的蠕化率、较低的强度和较小的切削力;以高纯生铁为主要炉料的蠕铁其断面敏感性基本不受蠕化剂的影响,但强度受蠕化剂影响明显。Four vermicular graphite irons were prepared by hot metal casting using Z14 iron and high purity iron as raw materials and then vermicularizing treatment with two vermicular agents of FeSiZnRE15Mg3 and FeSiRE6Mg6.Microstructure and cutting force of the four vermicular graphite irons were analyzed.The results show that compared with the FeSiZnRE15Mg3 vermicularizing treatment,the two vermicular graphite irons vermiculized with FeSiRE6Mg6 have higher vermicularity and smaller cutting force.Compared with cast iron with high purity iron as the main raw materials,the vermicular graphite irons prepared using Z14 iron as the main raw materials have higher vermicularity and smaller cutting force.The section sensitivity of the two vermicular graphite irons with the main charges of high pure iron is basically not affected by vermicular agents,but the strength significantly affected by the vermicular agents.

关 键 词：蠕墨铸铁 Z14生铁 高纯生铁 蠕化剂 切削力 力学性能 

分 类 号：TG143.49[一般工业技术—材料科学与工程]