硅对蠕墨铸铁热分析特征值及蠕化率的影响  

Influence of Silicon Content on Thermo-analysis Characteristic Values and Vermicularity of Vermicular Cast Iron

作　　者：刘树江 刘金海[2] 付彬国 薛海涛[2] 刘长起[3] 李寅国[3] LIU Shu-jiang;LIU Jin-hai;FU Bin-guo;XUE Hai-tao;LIU Chang-qi;LI Yin-guo(Dehualong(Tianjin)Power Transmission Machinery Industry Trading Co.,Ltd.,Tianjin 300042,China;Science and Engineering of Material,Hebei University of Technology,Tianjin 300130,China;Tianjin Sabulance Probe Engineering Co.,Ltd.,Tianjin 300402,China)

机构地区：[1]德华隆(天津)动力传动机械工贸有限公司,天津300042 [2]河北工业大学材料科学与工程学院,天津300130 [3]天津撒布浪斯探测仪器有限公司,天津300402

出　　处：《现代铸铁》2021年第2期21-23,31,共4页Modern Cast Iron

摘　　要：试验设计了5种不同硅含量的蠕墨铸铁铁液,分析了硅含量对蠕墨铸铁凝固的热分析曲线特征值TEU、TER、△Tr和蠕墨铸铁蠕化率的影响。试验结果表明:(1)在本次试验的硅含量范围内,蠕墨铸铁热分析曲线的特征值TEU和TER先是随着硅的增加而上升,然后,变化不明显;(2)蠕墨铸铁共晶温度回升特征值△Tr随着硅含量的增加呈下降趋势;(3)随着硅含量的提高,蠕墨铸铁中蠕虫状石墨数量减少,球状石墨数量增多,蠕化率降低。Vermicular graphite irons with 5 different silicon contents were designed for experiment and the influence of Si content on the characteristic values of thermal analysis curve TEU,TER,△Tr and vermicularity of vermicular graphite iron was analyzed.The result of experiment showed:(1)In the Si contents range of experiment,the characteristic values of thermal analysis curve TEU,TER,△Tr of vermicular graphite iron rose at first,and then changed not obviously.(2)The eutectic temper-ature rising characteristic value△Tr showed decreasing tendency with Si content increase.(3)With Si content increase,the vermicular graphite quantity of vermicular graphite irons reduced,the nodular graphite quantity of vermicular irons increased,the vermicularity decreased.

关 键 词：蠕墨铸铁 热分析 特征值 蠕化率 

分 类 号：TG143.49[一般工业技术—材料科学与工程]