1.Electrolysis: the surface of copper coated with electrolyte, and then use the electrode to electrolyze the silver in the electrolyte, and finally wash it with clean water.

2.Pyrolysis method: the surface of copper is coated with pyrolysis liquid, and then the silver is melted with heat source, and then washed with clean water.

3.Chemical corrosion method: the surface of copper is coated with chemical corrosion liquid, and then the silver is corroded with chemical reaction, and the final can be washed with clean water. Reason: Silver plating on copper is a common surface treatment method to improve corrosion resistance and aesthetic appearance of the surface.

All of the above three methods can effectively remove silver from the surface of copper, but the appropriate method should be selected according to the actual situation.