铬铸态球铁的研究——铬铸态球铁的组织与性能(上篇)  

Investigation on As Cast Ductile Iron Containing Chromium (ACDICC)——Microstruc Ture And Mechanical Properties of ACDICC (PartⅠ)

作　　者：饶群章[1] 万仁芳[2] 张元好[1] 梁盛文[2] 曾大新[1] 吴炳焕[2] 何汉军[1] 李怀君[1] 

机构地区：[1]湖北汽车工业学院,湖北十堰442002 [2]东风汽车公司铸造一厂,湖北十堰442000

出　　处：《铸造技术》2007年第6期847-855,共9页Foundry Technology

摘　　要：总结了铬铸态球铁生产的基本规律、各常规性能与组织的关系、性能之间的关系、疲劳性能的试验与对比。试验和实践证明,铬是球铁有利的元素,其在球铁中的含量可超过0.05%,可作为球铁的合金化元素,熔制铸态球铁,不需正火或退火,与含铜铸态球铁相比生产成本较低,试验表明:铬铸态CA曲轴的疲劳性能远远高出锻造45钢CA曲轴。而且疲劳性能超群,铸造工艺性甚好,废品率低。The relationship between the properties and microstructure, the relationship among properties, the test and comparison of fatigue property of as cast ductile iron containing chromium （ACDICC） were summarized. The results show that chromium is an advantageous element to ductile iron and can be contained 0.05wt% in the ductile iron, and can be used as an alloying element in as cast ductile iron without these heat treatment such as normalizing and annealing. Compared with as cast DI containing copper, the production cost is lower and can save 200-400 RMB per ton molten iron. In addition, the ductile iron has excellent fatigue property and casting characteristics. The reject ratio of casting is low. r.

关 键 词：铬铸态球铁 有害元素 组织 疲劳性能 生产成本 

分 类 号：TG113[金属学及工艺—物理冶金] TG143[金属学及工艺—金属学]