论文部分内容阅读
用MM-200磨损试验机对纯PTFE板料、3层复合材料(DU)及钉板型复合材料的工作层在干摩擦定载荷条件下的磨损性能进行了研究;用SEM对磨损试样表面和磨屑形貌进行观察和分析。结果表明:铜和PTFE的复合能提高PTFE的耐磨性并改变其磨屑的形成机理;铜钉板取代传统的平钢板,不仅提高了材料的承载能力,也大大提高了材料的耐磨性能;在干摩擦条件下,纯PTFE板料主要发生粘着磨损和微凸体刨切,3层复合材料主要是磨粒磨损,钉板型复合材料的磨损机理是粘着磨损和磨粒磨损共同作用。
The wear properties of working layer of pure PTFE sheet, three-layer composite (DU) and nail plate composite under dry friction loading were investigated by MM-200 abrasion testing machine. And wear debris morphology observation and analysis. The results show that the composite of copper and PTFE can improve the wear resistance of PTFE and change the formation mechanism of wear debris. The replacement of traditional flat steel plate with copper nail plate not only improves the bearing capacity of the material but also greatly improves the wear resistance of the material Under the condition of dry friction, the pure PTFE sheets mainly adhere and aspergranate, and the three layers of composite materials mainly wear abrasive grains. The wear mechanism of the nails plate type composite materials is the cohesive effect of adhesive wear and abrasive wear.