The electroplating process is a method of coating a conductor with a layer of metal using the principle of electrolysis. Electroplating refers to a surface processing method in which the base metal to be plated is used as the cathode in a salt solution containing pre-plated metal, and the cations of the pre-plated metal in the plating solution are deposited on the surface of the base metal through electrolysis to form a coating.
The properties of the coating are different from those of the base metal and have new characteristics. According to the function of the coating, it is divided into protective coating, decorative coating and other functional coating.
During electroplating, the plated metal or other insoluble material is used as the anode, the workpiece to be plated is used as the cathode, and the cations of the plated metal are reduced on the surface of the workpiece to be plated to form a plated layer. It can enhance the corrosion resistance of metal (the coating metal is mostly corrosion-resistant metal), increase hardness, prevent wear, improve conductivity, smoothness, heat resistance and surface beauty.
Fundamental
Electroplating is an electrochemical process as well as a redox process. The basic process of electroplating is to immerse the part in a solution of metal salts as the cathode, the metal plate as the anode, after the DC power is turned on, the desired coating is deposited on the part.
Crafting Process
Generally, it includes three stages of pre-plating pretreatment, electroplating and post-plating treatment.
Complete process: 1. Pickling → full plate electroplating
Copper → pattern transfer → acid degreasing → secondary countercurrent rinsing → micro-etching → secondary → pickling → tin plating → secondary countercurrent rinsing 2, countercurrent rinsing → pickling → pattern copper plating → secondary countercurrent rinsing → nickel plating → Level 2 washing → immersion in citric acid → gold plating → recycling → level 2-3 pure water washing → drying.
Electroplating process of plastic shell
Chemical degreasing.–washing–soaking in acetone–washing–chemical roughening-washing sensitizing–washing–activating–reduction–electroless copper plating–washing bright sulfate copper plating–washing- -Bright sulfate nickel plating–washing–bright chrome plating–washing and drying for inspection.
Post time: Sep-22-2022