基于电沉积的波导组合精密修复技术研究

铜质波导组合是雷达馈线系统中较为常见的一类关键器件,其结构复杂,尺寸精度要求高,内腔表面的损伤会直接影响电讯性能,甚至导致构件整体报废。文中在综合评估各类修复方法的基础上,对铜质波导组合选定电沉积精密修复技术进行研究。通过表面活化处理、小电流预沉积及退火处理来提高电沉积层与基体的结合力;综合利用封蜡绝缘和仿形夹具实现局部高效绝缘防护;通过优化电沉积工艺中电解液配方、电流参数等条件获得致密电沉积修复层。文中结合电沉积技术成功修复受损铜质波导组合的实际案例,阐述了电沉积技术在波导组合修复中的应用。该技术可推广应用于其他雷达精密构件的修复。

Research on Precise Repair Technology for Waveguide Combination Based on Electro-deposition

The copper waveguide combination, which is characterized by complex structure and high precision, is a kind of key devices in the radar system. Damages on the internal surface will affect its performance and even make the device discarded. The precise electro-deposition repair technology for waveguide combination is researched after comprehensive comparison of various repair technologies. The cohesion between electro-deposition layer and base material is enhanced by surface activation treatment, trickle predeposition and annealing. Highly effective minor insulation is achieved by paraffin and imitation jig. The compact metal structures are prepared by modifying the process parameters as formula and power source. A successful repair application of the precise electro-deposition repair technology to damaged copper waveguide combination is described. This technology can be applied to repair of other precision parts of radar system.