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.
出处
《机床与液压》
北大核心
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)
关键词
液压插装阀
灰铸铁
力学性能
组织
Cartridge valve
Gray cast iron
Mechanical properties
Microstructure
