液压多路阀灰铸铁阀体材料组织与性能研究  

Mechanical Properties and Microstructure of Gray Graphite Cast Iron for Cartridge Valve

作　　者：王守仁[1] 刘延利[1] 朱艳华[1] 郭培全[1] 王敏[2] 

机构地区：[1]山东英才学院机械制造及自动化工程学院,山东济南250104 [2]山东大学产业集团,山东济南250061

出　　处：《机床与液压》2014年第5期31-34,共4页Machine Tool & Hydraulics

基　　金：山东省自然科学基金资助项目(ZR2011EMM003)

摘　　要：采用复合型壳熔模铸造工艺制备出了液压插装阀灰铸铁阀体,并测试其力学性能指标。利用OM、SEM、EDS分析了灰铸铁的微观组织特征。实验结果表明:石墨片长度为144.6μm左右,为石墨8级;主要基体组织为铁素体+珠光体,渗碳体簇<3%,为碳3级;灰铸铁中的磷共晶组织影响其力学性能。One kind of gray graphite cast iron for fabricating cartridge value was studied. Their mechanical properties and micro-structure were analyzed by OM,SEM,EDS. The results show that graphite length is about 144.6 μm （Degree 8）. The volume of ce-mentite is lower than 3%（Degree 3）. And the matrix is made of ferrite and pearlite. The phosphide eutectic in gray graphite cast iron has a large influence on its mechanical properties.

关 键 词：液压插装阀 灰铸铁 力学性能 组织 

分 类 号：TH137[机械工程—机械制造及自动化]