硫氧孕育剂加入量对球铁组织性能的影响  

Effect of the addition amount of sulphur oxygen inoculant on the microstructure and property of ductile iron

作　　者：陈鹏辉 柯志敏 CHEN Penghui;KE Zhimin(Guangdong transit Chong Chin ball Rail Ltd., Yingde 513000, Guangdong China;Guangdong High Performance Large-scale Casting Manufacturing and SimulationEngineering Technology Research Center, Yingde 513000, Guangdong China)

机构地区：[1]广东中天创展球铁有限公司,广东英德513000 [2]广东省高性能大型铸件制造及模拟工程技术研究中心,广东英德513000

出　　处：《中国铸造装备与技术》2019年第3期34-37,共4页China Foundry Machinery & Technology

基　　金：2018年清远市科技计划项目(2018D014)

摘　　要：介绍了齿轮座铸件加入0.1%、0.15%、0.2%硫氧孕育剂试制生产齿轮座铸件的过程,阐述了各生产环节的工艺控制,并通过对齿轮座对应的附铸试块进行力学性能测试和金相组织分析得出:增加硫氧孕育剂的加入量可以提高球铁铸件的球化率、获得更多的石墨球数和铁素体含量,从而获得延伸率高、综合力学性能优异的球铁铸件。The trial production process of adding 0.1%, 0.15% and 0.2% sulphur and oxygen inoculants to the gear seat castings has been introduced. The process control of each production link has been expounded. The mechanical properties and metallographic structure of the attached casting blocks corresponding to the gear seat have been tested and analyzed. Combining with the production practice, the results show that spheroidization rate of ductile iron castings and number of graphite nodules and ferrite content have been increased by increasing the addition amount of sulphur oxygen inoculant. Thus in this way, the nodular iron castings with high elongation and excellent comprehensive mechanical properties can be obtained.

关 键 词：硫氧孕育剂 铁素体含量 力学性能 金相组织 

分 类 号：TG143.5[一般工业技术—材料科学与工程]