雷达用汇流条粉末静电涂覆绝缘技术

Study on Powder Electrostatic Coating Insulation Technology for Radar Bus Bar

随着雷达高集成度、轻量化的发展需求,对汇流条的设计提出了更高要求,使其具有高密度、小型化、大电流和高温升的特点,这些特点对汇流条的绝缘也提出更高要求。本文通过分析雷达用汇流条的特点和绝缘要求,提出了采用静电涂覆绝缘树脂粉末的方法实现汇流条的绝缘。并通过绝缘树脂粉末的优选、绝缘涂层涂覆前处理技术研究、改进静电喷涂工艺、优化汇流条加工工艺流程和汇流条绝缘涂层性能测试等方法实现了汇流条的批量生产,并实现了厚度可控的粉末涂覆厚涂层。

With the increasing demands of radar on high integration level and low weight,the designers of bus bar have paid more and more attentions to high integration,miniaturization,large current transmission and high temperature rise.Except for the attempts on overall design and structure optimization,the multifunction of bus bars also puts forward urging requirements on high performance insulation layer.In order to solve these problems,an optimized method is proposed to realize insulation of bar bus,which adopts electrostatic insulation resin powder spraying to form the bus bar insulation layers.The method also combines with optimized pretreatment method,thermal immersion painting and electrostatic spray technique.The manufacturing processes of bus bar are improved and the performances of several insulating resin powders are also compared.The novel method has realized the volume production and controllable coating thickness of bus bars.