聚四氟乙烯自润滑轴套极限PV试验方法探究  

作　　者：郑合静 丁晓龙 杨兆方 焦明华[2] 

机构地区：[1]合肥波林新材料股份有限公司,安徽合肥230088 [2]合肥工业大学摩擦学研究所,安徽合肥230009

出　　处：《科技创新与应用》2022年第19期138-141,共4页Technology Innovation and Application

摘　　要：以主要成分为聚四氟乙烯的BLB-1A自润滑材料为主要原材料,制备4种不同规格的自润滑轴套,针对GB/T 7948—1987《塑料轴套极限PV试验方法》规定的试验条件存在的疑问进行试样宽度、配合间隙、滑动线速度三个方向的研究。结果如下,无油润滑试验中,轴套宽度、配合间隙、滑动线速度对极限PV值都有影响,其中滑动线速度影响最大、轴套宽度次之,配合间隙影响最小。最后,根据研究结果对既有技术标准的修订工作提出建议。Four different specifications of self-lubricating bushings were prepared with BLB-1A self-lubricating material mainly composed of polytetrafluoroethylene(PTFE)as the main raw material.The five directions of sample width,fit clearance and sliding linear velocity were studied in view of the doubts about the test conditions for"GB/T7948—1987 plastic bushing limit PV test method".The results are as follows,in the oil-free lubrication test,bushing width,fitting clearance and sliding line velocity all have influence on the PV value,of which the sliding line velocity has the greatest influence,the bushing width is the second,and the fitting clearance has the least influence.Finally,some suggestions for revising existing technical standards are put forward.

关 键 词：聚四氟乙烯 自润滑 轴套 极限PV值 

分 类 号：TH133.31[机械工程—机械制造及自动化]