新型B－M球墨铸铁磨球可行性研究  

FEASIBLE STUDY ON MILLINGBALL WITH BAINITE DUCTILE CAST IRON

作　　者：魏德强[1] 周志胜[1] 徐士波 张贵宏[1] 程新江[1] 王宏立[1] 

机构地区：[1]黑龙江八一农垦大学工程学院,黑龙江浩良河化肥厂,黑龙江迎春机械厂

出　　处：《黑龙江八一农垦大学学报》1996年第4期73-77,共5页journal of heilongjiang bayi agricultural university

摘　　要：采用热开箱铸造余热分步等温淬火的热处理方法，研究了Ｃｕ－Ｍｏ－Ｃｒ合金球墨铸铁用于制作磨球的可行性。采用本工艺处理的冲击试样，其基体组织为下贝氏体加少量马氏体和残余奥氏体．冲击值大于１４Ｊ／ｃｍ２，硬度大于５２ＨＲＣ，使用性能高于锻钢球，和高铬球相当。The feassibilty on application of Cu-Mo-Cr alloyed bainite ductile cast iron for millingball has been studied.using hot sake-out the casting remaining heating with the step austempering heat treatment,the matrix microstructure of impact sample treated by above-mentioned process consists of lower bainite with a small amount of martensite and risdual austenite, which has impact value of more than 14 J/cm2 and hardness number of more than 52HRC,the service life life was found to be superior to forge steel and as lood as hight-chromium cast iron millingball.

关 键 词：B-M球墨铸铁 分步等温淬火 磨球 

分 类 号：TG143.5[一般工业技术—材料科学与工程]