铁基形状记忆合金防松螺母重复使用性能研究  

Research on repetitve use of Fe-based shape memory alloy lock nut

作　　者：沈英明[1] 聂国权[2] 李俊良[2] 杜彦良 

机构地区：[1]石家庄铁道学院科技处,河北石家庄050043 [2]石家庄铁道学院教务处,河北石家庄050043 [3]石家庄铁道学院结构所,河北石家庄050043

出　　处：《河北科技大学学报》2005年第2期138-141,共4页Journal of Hebei University of Science and Technology

基　　金：河北省科技攻关项目(99212102D);河北省教育厅博士基金资助项目(B2001215)

摘　　要：为了降低铁基形状记忆合金防松螺母的使用成本,探索了该新型螺母重复使用的可行性。使用M10螺母进行试验测试,螺母在不同回复退火温度间隔条件下的自锁摩擦力矩均有所增大,温度低于573K时,自锁摩擦力矩增加量均小于25%,当回复退火温度间隔为50K时,自锁摩擦力矩增加量有4次在25%以上,该新型螺母重复使用性能较好。The feasibility of repetitive use of Fe-based shape memory alloy lock nut has been studied in order to lower the usage cost. Based on experimental test with M10 lock nut, it shows that the self-locking friction moments all increase at different recovery annealing temperature's intervals. When annealing temperature is below 573 K, the increment of the self-locking friction moments is less than 25%.When interval temperature is 50 K,the increment of the self-locking friction moments is above 25% for four times, and the lock nut has good use repeatability.

关 键 词：铁基形状记忆合金 防松螺母 重复使用 自锁摩擦力矩 回复退火 

分 类 号：TH131.3[机械工程—机械制造及自动化] TG139.6[一般工业技术—材料科学与工程]