氟橡胶O形圈低压气体密封微动摩擦特性试验  

Experiment of Frictional Characteristics of Fretting Fluorine Rubber O-rings at Low Gas Seal Pressure

作　　者：朱启惠[1] 白少先[1] 

机构地区：[1]浙江工业大学机械工程学院,浙江杭州310032

出　　处：《摩擦学学报》2015年第5期646-650,共5页Tribology

基　　金：国家自然科学基金(51275473);浙江省自然科学基金杰出青年基金项目(LR14E050001)资助~~

摘　　要：对低压条件下气体密封橡胶O形圈的微动摩擦性能展开了试验研究.对橡胶O形圈与不锈钢2Cr13摩擦副摩擦力—微小位移的变化曲线进行测量.重点分析了微动运动状态下的循环次数、密封压力以及压缩率对O形圈摩擦性能的影响.结果表明:在微动状态下.O形圈摩擦力存在迟滞特性.摩擦力随着微小位移的增大呈明显线性增大;随着循环次数的增加.微动状态下的摩擦力趋于稳定;随着密封压力和O形圈压缩率的增加.摩擦力变化明显.幅度超过30%.Frictional characteristics of fretting rubber O-rings at low gas pressure were studied experimentally. The fretting frictional force between rubber O-rings and stainless steel 2Cr13 was measured. The experimental results show that O-rings frictional force had a hysteresis characteristic in the fretting cases. The frictional force had a linear increase with increasing displacement and became stable with increase of the reciprocating cycle number. However, the fretting frictional force varied significantly, larger than 30% in amplitude, with increase of the sealed pressure and the compression ratio.

关 键 词：气体密封 微动 O形圈 黏滞特性 摩擦力 

分 类 号：TH117.2[机械工程—机械设计及理论]