含稀土抽油杆用钢的疲劳试验  

Fatigue Test of Steels Containing RE Used for Sucker Rods

作　　者：李斌[1] 白东坤[2] 邢志刚[2] 

机构地区：[1]内蒙古包钢钢联股份有限公司技术中心,内蒙古包头014010 [2]内蒙古包钢钢联股份有限公司棒材厂,内蒙古包头014010

出　　处：《包钢科技》2012年第6期27-29,共3页Science & Technology of Baotou Steel

摘　　要：包钢开发的含稀土抽油杆用钢疲劳循环周次达到500万次不断。钢中稀土的赋存状态和夹杂物检验结果表明,稀土改变了MnS夹杂物的形态及其尺寸,MnS夹杂物由长条状变性为球状,尺寸明显减小了,因此含稀土抽油杆用钢疲劳寿命获得明显提高。The fatigue cycle of steels containing the rare earth used for sucker rods developed by Baotou Steel reaches 5 million times. The occurrence of the rare earth in the steel and the results of testing inclusions show that the rare earth changes the shape and size of MnS as well as it changes from long strip to spherical MnS and its size reduces obviously so that the fatigue life of steels containing the rare earth used for sucker rods has been improved remarkably.

关 键 词：抽油杆 稀土 夹杂物 疲劳 

分 类 号：TG113.255[金属学及工艺—物理冶金]