The thickness of each metal during electroplating is related to current density and electroplating time. Methods: Firstly, the area of each workpiece was calculated, and then the current density of each workpiece was determined according to the requirements of electroplating process.

The workpiece is concave and convex, so the current is different, resulting in different thickness.

The methods of controlling the thickness of gold plating in coastal electroplating base are as follows: adding appropriate additives to the plating solution to reduce the thickness difference; Use less current; Cathode movement is used for electroplating.