Silver plating on 0.2mm copper foil can improve conductive contact impedance and enhance signal transmission

Silver plated copper foilThe advantage lies in: improving conductive contact impedance and enhancing signal transmission; Enhance conductivity and prevent oxidation; Widely used for conducting connections in high current electrical equipment. Moreover, it is equipped with an orange low-voltage heat shrink tubing in the middle, which further improves the connection between the copper foil soft connection and electrical equipment, as well as enhances the tensile strength and conductivity of the connection position, providing better safety protection for high current electrical equipment.The pre-treatment agents for silver electroplating process will be used differently for different materials. Generally speaking, iron and copper materials (excluding oxygen free copper and tungsten copper) will use 15-25% dilute sulfuric acid to remove the surface oxide film of the workpiece to be silver plated; For silver plating on stainless steel and iron nickel alloys, use about 20% dilutehydrochloride to remove surface oxides (mainly chromium oxide layer); Aluminum materials and aluminum alloys are relatively complex, and multiple alkali and acid corrosion should be used to remove the stubborn aluminum oxide layer on their surface.

The pre plated part serves asElectroplated silver plating processOne of the key steps plays a crucial role in the adhesion of the silver plating layer. If errors occur during the pre plating process, the silver plating layer can almost completely remove silver, or the silver plating 100 grid test cannot pass. Generally speaking, the pre plating process for iron and copper materials mostly uses cyanide copper plating process, while stainless steel and stainless steel use nickel chloride electroplating process. For example, before locally silver plating the threads of austenitic stainless steel card sleeve joint nuts, nickel chloride will be pre plated for 3-5 minutes. The firmness of the silver plating layer on the thread of the stainless steel nut was determined, while meeting the requirements of the 3M paste silver plating test.
    Silver electroplating solutionIt is the core step of silver plating process, mainly composed of silver plating main salt, potassium silver cyanide, and silver plating additives. The content of potassium cyanide is generally 100-150g/L, and the content of potassium silica cyanide is generally 10-25g/L. Silver plating additives are added by different manufacturers. Some companies use the 3K series additives produced by Dow Chemical Rohm and Haas, a leading chemical industry in the United States, to ensure that the silver plating layer is brighter and whiter, and the silver plating crystals are finer, which is much more stable than additives produced by domestic small and medium-sized enterprises.