柱上隔离开关不同镀银层参数的导电及磨损性能实验研究

Experimental study on conductivity and wear properties of different silver coating parameters of column disconnecting switch

为提高柱上隔离开关的导电和耐摩抗磨能力,行业目前主要采用在其接触部位进行镀银处理。但镀银层厚度、粗糙度和硬度对柱上隔离开关的导电性、磨损度的影响缺乏研究,亟需给出更加合理的设计标准。本文以GW-9系列柱上隔离开关为研究对象,通过投制试验样件,研究了镀银层厚度、粗糙度、硬度及涂覆电力复合脂对其接触部位导电性及摩擦磨损性能的影响。研究结果表明:柱上隔离开关接触部位镀银能够提高接触表面的导电性和摩擦性能,镀银层的粗糙度和硬度对接触部位的导电性具有一定影响,不同镀银层厚度对接触部位导电性的影响较小,电力复合脂润滑能够显著提高隔离开关接触部位的抗磨性能。研究结果可为隔离开关电接触材料参数的标准化设计提供理论与实验依据。

To improve the conductivity and wear resistance of disconnecting switch,silver plating is mainly used in the contact part.However,there is a lack of research on the influence of thickness,roughness and hardness of silver plating on the conductivity and wear of disconnecting switch,it is urgent to provide a more reasonable design standard.In this paper,GW-9 series column disconnecting switches were taken as the research object,and the test samples were produced.The effects of thickness,roughness,hardness of silver plating layer and coated electric grease on the electrical conductivity and friction properties of the contact parts of disconnecting switches were studied.The results show that silver plating can improve the electrical conductivity and friction properties of disconnecting switch contact.The roughness and hardness of silver plating have a certain effect on the electrical conductivity of contact surface.Thickness of the silver plating has little effect on the electrical conductivity of contact surface.The anti-wear property of disconnecting switch can be improved significantly under electric compound grease lubrication.The research results can provide theoretical and experimental basis for the standardized design of electrical contact material parameters of disconnecting switch.