过共晶高铬铸铁铸造工艺研究  

Study on Casting Process of Hypereutectic High Chromium Cast Iron

作　　者：邓家祥 蔡红涛 田银良 DENG Jiaxiang;CAI Hongtao;TIAN Yinliang(Xiangyang Wuerwu Pump Industry Co.,Ltd.,Xiangyang 441004,Hubei China)

机构地区：[1]襄阳五二五泵业有限公司,湖北襄阳441004

出　　处：《铸造工程》2022年第5期34-37,共4页Foundry Engineering

摘　　要：在高磨蚀工况环境下,过共晶高铬铸铁比共晶和亚共晶高铬铸铁有着更好的耐磨性能,但其铸造工艺性差一直制约该类产品的推广应用。试验表明,通过细化初生碳化物、控制碳化物形态,改善了过共晶高铬铸铁的基体组织和力学性能,同时在铸造过程中从工艺设计、化学成分、热处理工艺等方面优化控制裂纹产生,提高了过共晶高铬铸铁件的内外质量。Under high abrasion conditions, hypereutectic high chromium cast iron has better wear resistance than eutectic and hypoeutectic high chromium cast iron, but its poor casting process has been restricting the popularization and application of this kind of products. The results show that the matrix structure and mechanical properties of hypereutectic high chromium cast iron are improved by refining the primary carbides and controlling the morphology of carbides. Meanwhile, the internal and external quality of hypereutectic high chromium cast iron is improved by optimizing and controlling the crack generation from the aspects of process design, chemical composition and heat treatment.

关 键 词：过共晶 高铬铸铁 铸造工艺 渣浆泵 

分 类 号：TG245[金属学及工艺—铸造]