Why can't the plating be made on the inside surface of the valve?
We know that metals charge only on the outer surface, so it is difficult to electroplate on the inner surface
When plating, the coating metal or other insoluble material makes the anode, the workpiece to be plated as the cathode, the coating metal cation on the surface of the workpiece to be reduced to form the coating
Electroplating is an electro deposition process in which electrodes are applied to the surface of an object by means of an electric current. Its purpose is to change the characteristics or dimensions of an object's surface
