Surface treatment method for cavity filter

Abstract

The invention discloses a surface treatment method for a cavity filter. The method comprises the following steps: S1, electroplating a cavity and a connecting member of the cavity filter with a firstmaterial for priming to enhance the binding force between the cavity and the connecting member; S2, electroplating the cavity and the connecting member of the cavity filter with a second material to enable the cavity and the connecting member to meet electrical property requirements of the cavity filter; S3, covering the cavity, and electroplating the connecting member with a third material to enable the connecting member to meet the requirements for corrosion prevention and wear resistance. Cavity priming is performed on the cavity and the connecting member of the cavity filter to enhance adhesion capacity and anti-corrosion capacity of the cavity and the connecting member to electroplated coatings; different electroplating treatment is performed on the cavity and the connecting member, electrical properties of the cavity of the cavity filter are realized, and corrosion prevention and wear resistance of the connecting member of the cavity filter are realized.

Description

technical field [0001] The invention relates to a cavity filter, in particular to a surface treatment method of the cavity filter. Background technique [0002] The cavity filter is widely used in the communication field as a frequency selection device. Due to the special requirements of the cavity filter on the conductivity of the cavity, the surface of the cavity must be electroplated. [0003] Electroplating is a process of plating a thin layer of other metals or alloys on some metal surfaces by using the principle of electrolysis. Electroplating can prevent corrosion, improve wear resistance, conductivity, reflectivity and enhance aesthetics. [0004] The cavity filter mainly includes a cavity and connecting components arranged on the side of the cavity. In the prior art, in order to improve the performance of the cavity filter while reducing the cost, a new cavity structure is to integrate the connecting member with the cavity, and for the integrated cavity, based on i...

AI Technical Summary

Problems solved by technology

[0005] However, the entire surface of the filter cavity is electroplated with copper materials, and the connecting components of electroplated copper materials are far from meeting the requirements for anti-corrosion and wear resistance.

However, for the overall silver-plated material on the surface of the cavity filter, although the anti-corrosion performance of the connecting components is improved, its wear resistance is still not good, and the cost is greatly increased by the silver-plated material.