灰铸铁HT250微合金化研究  

Study on Micro-alloying of HT250 Grey Cast Iron

作　　者：刘天平 王爱丽 李泽同 李泽嘉 孙玉福[3] LIU Tianping;WANG Aili;LI Zetong;LI Zejia;SUN Yufu(Anyang KCST Co.,Ltd.,Tangyin 456150,Henan China;Huaxing Mechanical Manufacturing Co.,Ltd.,Tangyin456174,Henan China;Foundry Institute,Zhengzhou University,Zhengzhou 450003,Henan China)

机构地区：[1]安阳市凯创科技有限公司,河南汤阴456150 [2]华兴机械制造有限公司,河南汤阴456174 [3]郑州大学铸造研究所,河南郑州450003

出　　处：《铸造工程》2019年第4期20-27,共8页Foundry Engineering

摘　　要：研究了氮和铌元素对HT250灰铸铁组织和力学性能的影响。结果表明:采用合成铸铁工艺、复合孕育和增硫工艺,可以获得A型石墨超过95%的显微组织,从而提高了灰口铸铁件的力学性能,达到压缩机壳体的技术要求。The effect of nitrogen and niobium elements on microstructure and mechanical properties of HT250 gray cast iron were investigated. The results showed that the microstructure in which A-type graphite is more than 95% was developed by the use of synthetic cast iron process, multi-inoculant and sulfur-increasing measures, thus improving mechanical properties of the gray cast iron castings, and meeting the technical requirements for compressor case.

关 键 词：HT250灰铸铁 微合金化 合成铸铁 增硫 复合孕育剂 

分 类 号：TG143[一般工业技术—材料科学与工程]