Electroplating has been widely used in the wiring terminal products, such as pins, tablets, screws and other parts need to be electroplated to meet its specific functions and life, then what is the terminal plating, what is the purpose of the terminal? . Below we discuss in detail from the following aspects on the terminal terminal plating knowledge, let us have a deeper understanding of electroplating.
First, the definition of electroplating
Simply speaking, electroplating is the process of depositing a metal or alloy on the surface of a workpiece by means of electrolysis under the action of direct current to form a uniform, dense, well-bonded metal surface.
Second, the purpose of electroplating
1, beautiful (such as gold, silver, nickel, etc.)
After electroplating, the metal usually has a more glossy and bright appearance than the material.
2, anti-up corrosion (such as nickel, chromium, zinc, etc.)
Usually raw materials such as copper, iron, etc. are easily oxidized in the air, and plating a layer of metal with strong anti-oxidation ability can improve its corrosion resistance.
3, strong plating adhesion (such as copper)
For metals with poor adhesion, copper bases are usually used to enhance adhesion before plating.
4, enhance the conductivity (such as gold, silver)
The raw materials such as iron and phosphorus copper generally have conductivity of less than 20%. For connectors with low impedance requirements, they cannot meet the requirements. Therefore, after surface plating with high conductivity metal such as gold, the impedance can be reduced.
5, improve the solderability (such as tin, gold, etc.)
Due to the poor adhesion of the original material to tin, the solder plating of the part can be improved by plating the surface with a certain thickness of tin and other substances.
The pins, tabs, screws and other components in the terminal block are electroplated to extend the life of the terminal and secondly, to improve the properties of the terminal in a specific environment. Different electroplating can certainly change the application area of ​​the terminals.
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