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How Electroplating Works

Time:2017-11-17 17:19 source: Leecheer Author: Leecheer Click:

How Electroplating Works

The definition of  Electroplating

When electroplating, the coating or other insoluble as positive pole, the metal to be 

electroplated as negative pole, the positive ion of metal coating become electroplating

 coating. in order to exclude the disturbance of  other positive ion and even , strong 

coating, it need electroplate liquid with metal cation to keep the concentration of 

metal cation.

The purpose of electroplating is to electroplate metal coating on base material to 

change the surface propertyof base material . Electroplating can strengthen metal 

corrosion resistance, hardness, abrasive resistance, electrical conductivity, unctuosity, 

heat resistance and good surface.

The factor of electroplating

1. Ngative pole: the part need to be plated

2. Positive pole: if it is soluble positive pole, it is metallic coating. If it is insoluble 

positive pole, it is mostly precious metal (platinum; iridium oxide)

3. Electroplating liquid: the electroplating with metal ion.

4. Eectroplating tank:  the tank can store electroplating liquid. The strength, 

anti-corrosion, temperature resistance will be considered.

5. Rctifier: the equipment provide direct-current main.

The base working procedure of electroplating

Polishing—hanging – degreasing—washing— ectrochemical polishing or chemical 

polishing —acid pickling—preplating—electroplating— washing—postprocessing

— washing —drying—taking down— inspecting and packing

The purpose of electroplating

1. copper plating : use as base material to improve adhesive ability of coating 

and anti- corrosion.

2. nickel platinguse as base material or as appearance to improve anti-corrosion

 and  abrasive resistance.

3. gold plating : to improve conductive contact resistance and improve 

signal transmission.

4. palladium plating : to improve conductive contact resistance and improve 

signal transmission.

5. tinplating: to improve welding capability.

 
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