配副金属表面粗糙度对丁腈橡胶O型圈摩擦学特性的影响

发布时间：2018-07-31 15:12

【摘要】：UMT-3多功能摩擦磨损试验机上,以丁腈橡胶O型圈/316L不锈钢粗糙表面配副为研究对象,系统研究了配副金属表面粗糙度对丁腈橡胶摩擦学行为的影响,重点探讨了不同表面粗糙度下摩擦系数和磨损体积的变化规律、揭示了不同表面粗糙度下橡胶表面的损伤机制.结果表明:表面粗糙度对丁腈橡胶O型圈的摩擦磨损有重要影响;随着表面粗糙度的增加,稳定阶段的摩擦系数呈先降低后升高的变化趋势.当表面粗糙度在Ra为0.1μm左右时,丁腈橡胶表现出较低的摩擦系数和材料磨耗,磨损表面呈现出典型的花纹磨损特征;而过高或过低的表面粗糙度下丁腈橡胶均表现出较高的摩擦系数和材料磨耗,其磨损机制以黏着磨损和疲劳磨损为主.
[Abstract]:The effect of surface roughness on the tribological behavior of nitrile butadiene rubber (NBR) was systematically studied on the UMT-3 multifunctional friction and wear tester, taking the rough surface pair of nitrile rubber O-ring / 316L stainless steel as the research object. The variation of friction coefficient and wear volume under different surface roughness was discussed, and the damage mechanism of rubber surface under different surface roughness was revealed. The results show that the surface roughness has an important effect on the friction and wear of nitrile butadiene rubber O-ring, and the friction coefficient decreases first and then increases with the increase of surface roughness. When the surface roughness is about 0.1 渭 m, the NBR exhibits low friction coefficient and material wear, and the worn surface shows typical pattern wear characteristics. The wear mechanism of NBR is mainly adhesive wear and fatigue wear, and the friction coefficient and material wear of NBR are higher than that of NBR with too high surface roughness or too low surface roughness, and the wear mechanism of NBR is mainly adhesive wear and fatigue wear.
【作者单位】：浙江工业大学过程装备及其再制造教育部工程研究中心;
【基金】：国家重点基础研究发展规划项目(973)(2014CB046404) 国家自然科学基金(51305398) 浙江省自然科学基金(LQ13E050013)资助~~
【分类号】：TH117.1;TB42

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