微Cr中锰球铁抗磨衬板的试验研究  

Study of Trace Chromium Medium Manganese Ductile Iron Wear-resistant Lining Board

作　　者：李明弟[1] 李长龙[1] 田博昌 李成美[1] 

机构地区：[1]山东建筑大学材料科学与工程学院,山东济南250101 [2]山东青州建筑机械厂,山东青州261314

出　　处：《铸造技术》2008年第9期1238-1240,共3页Foundry Technology

摘　　要：在实验室条件下,研究了微量Cr(0.05%～0.15%)对中锰球铁组织和性能的影响。结果表明,中锰球铁加入微量铬,可以使碳化物粒化,碳化物数量增加,马氏体组织和力学性能改善。在生产条件下,利用微Cr中锰球铁生产的JS500-1000强制式混泥土搅拌机衬板,经过3年跟踪考察,使用寿命比中锰球铁提高了30%～40%。The effects of trace Or（0.05%--,0.15wt%） on the microstructure and properties of the medium manganese ductile iron were studied. The results show the addition of trace Cr can change the morphology of the carbides increase the amount of the carbides and improve the martensite structure and mechanical properties of the medium-manganese ductile iron. The practical application shows that the service life of JS500-1000 mandatory concrete mixer lining board manufactured by trace chromium medium manganese ductile iron is increased by 30--40 % in comparison with that of medium manganese ductile iron.

关 键 词：中锰球铁 微量Cr 组织 性能 

分 类 号：TG143.5[一般工业技术—材料科学与工程]