Cavity filter surface treatment method

The invention relates to the technical field of communication, in particular to a cavity filter surface treatment method. Through passivation, sealing, surface modification and other processes and by using a specific sealing agent, a uniform and glossy surface can be formed on the surface of the treated cavity filter, the corrosion resistance, the pollution resistance, the electrical conductivity, the coatability and the like of the metal surface can be enhanced after curing, and due to the fact that a traditional organic coating coating process is omitted, the production cost is reduced. The surface treatment process cost is reduced, and the heat dissipation performance of the surface of the cavity filter can be remarkably improved. The surface treatment method is simple and easy to implement, additional special equipment does not need to be added, main raw materials adopted in the process steps are all water-based components, and the environment-friendly performance is excellent. 本发明涉及通信技术领域，具体涉及一种腔体滤波器表面处理