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在以往的水工闸门设计中,支承铰或支承滚轮的轴套一般都采用青铜或压合胶木制作。由于材料本身以及在设计、制造、管理过程中或多或少存在一些缺陷,因而闸门滚轮锈死不转的现象时有发生,影响闸门的正常使用。近年来出现的SF型材料,较好地解决了闸门支承结构的自润滑问题。是一种良好的轴套代用材料。一、SF型材料的主要性能SF型材料是由多种材料复合而成。按表面润滑层的材料不同,可分为SF-1和SF-2型。SF-1型表面塑料层是聚四氟乙烯,具有较好的化学稳定性和减磨性能。在与摩擦件对磨时,其表面层的聚四氟乙烯向对摩件表面转移,并形成比较稳定的聚四氟乙烯固体润滑膜,因而无需外加润滑剂。SF-2表面的塑料层是聚甲醛,在干摩擦条件下耐摩性能虽不很优越,但
In the past, the hydraulic gate design, the bearing hinge or roller bearings are generally used bronze or laminated with bakelite production. As the material itself and in the design, manufacture, management process more or less some defects, so the phenomenon of rust-free rotation of the gate roller occurs from time to time, affecting the normal use of the gate. In recent years, the emergence of SF-type material, a better solution to the gate support structure of the self-lubricating problem. Is a good alternative sleeve material. First, the main properties of SF-type material SF-type material is a combination of a variety of materials. According to the surface of the lubricating layer of different materials, can be divided into SF-1 and SF-2 type. SF-1 plastic surface layer is PTFE, with good chemical stability and anti-wear performance. In the friction with the friction, the surface layer of PTFE to the friction surface transfer, and the formation of a more stable PTFE solid lubricant film, so no external lubricant. SF-2 surface of the plastic layer is polyoxymethylene, under dry friction conditions, but the performance is not very good, but