Tribological model investigation to wear behaviour of material pairs in sealing contacts

径向轴封是常用的机械元件，以避免转轴漏油和污垢进入外壳。在较小的接触区域内，密封、轴和待密封介质之间存在着复杂的机械、物理和化学相互作用。这些因素相互影响着密封系统的摩擦、热和磨损行为。如今，由于减摩需求的增加，高性能氟橡胶(FKM)密封圈和低粘度聚α-烯烃(PAO)基础油经常用于汽车应用中。具体地说，这种常用的材料组合会多次造成宏观磨损痕迹。这可能会导致泄漏，这意味着密封系统发生故障。因此，本项目的目的是识别影响轴和密封磨损的形态寿命的参数。在下一步中，这些量化的参数可以用作模拟的输入，以确定摩擦学载荷。根据研究结果，提出了降低磨损量的技术对策。

Radial shaft seals are commonly used machine elements to avoid oil leakage of rotating shafts and entry of dirt in the housing. In the small contact area a complex mechanical, physical and chemical interaction exist between the seal, the shaft and the media to be sealed. Those mutually influence the frictional, thermal and wear behavior of the sealing system. Today high performance flouroelastomeric (FKM) seal rings and low viscosity polyalphaolefin (PAO) base oils are frequently used in the automobile applications due to the increasing demand for friction reduction. Specifically this commonly used material combination causes a macroscopic wear mark at many times. This is able to cause leakage, which means a failure of the sealing system. Therefore the aim of this proposed project is the identification of the morphological life-affecting influence parameters of the shaft and seal wear. In the next step those quantified parameters can be used as input for a simulation to determine the tribological load. From the results technological countermeasures for the reduction of wear are derived.