Factors impacting zinc plating results:
Sometimes the piping goods don’t get ideal effects after zinc plating.Actually there are a variety of factors that can influence the outcome of a zinc plating project, most of which can be effectively managed and controlled by an experienced metal finishing solutions provider. Some factors include:
Current density — The density of the DC current flowing from the anode to the cathode can have a significant impact on the thickness of the zinc coating. The higher the current density, the greater the thickness coating. If the current density exceeds practical limits, a wrinkled substrate surface is likely to result.
Cold galvanized pipe fittings products finished in Haihao Group
Temperature — The temperature of the plating bath will also have a direct impact on the zinc plating outcome. Higher bath temperatures tend to reduce hydrogen diffusion on the cathode and increase the consumption of brighteners and other additives. There is also a close relationship between temperature and current density. When both are increased, the result will be a brighter zinc deposit. When the temperature increases but current density remains unchanged, the formation of larger metallic crystals will occur.
Concentration of zinc deposit — The level of zinc concentration in the plating solution will affect the brightness and texture of the plated product. Higher concentrations will produce a rougher surface, while lower concentrations will result in a brighter finish with fine crystals.
Cold galvanized slip on flanges finished in Haihao Group
Other controllable factors that affect the result when plating with zinc include:
- Position of the anode and cathode
- Substrate surface condition
- Agitation of the bath (or lack thereof)
- Use of additives such as surfactants and brighteners
- Concentration of hydrogen ions
- Duration of actual plating time
- Degree of filtration of the zinc plating bath
- Efficiency of the rinsing operation
- Concentration of pollutants and contaminants in the plating bath
As professional supplier of zinc plating piping goods,Haihao Group could control the process factors and provide the piping goods with the best zinc plating effect.Email:sales@haihaogroup.com
