In the copper-nickel-chromium plating process, bright acid copper plating plays an important role, and if the quality of the copper plating layer is not up to standard, it will often have a certain impact on the subsequent plating. Therefore, it is necessary to study the causes and solutions of streaks on bright acid copper plating. In this issue, we will first talk about the influence and removal of organic impurities and oil impurities.
Effects and removal of organic impurities
Organic impurities can cause the bright acid copper plating layer to become fogged, reducing the brightness and leveling of the plating. Removal of organic impurities is usually treated with hydrogen peroxide-activated carbon.
The specific processing steps are as follows:
① Add 1~2 mL/L30% hydrogen peroxide under stirring, heat to 50~60℃, and continue stirring for about 60 min to remove the excessive hydrogen peroxide.
② Add 3~5 g/L activated carbon under stirring and continue stirring for 30 min.
③Filter after standing
④ Add the formulated amount of all brighteners and stir well before plating.
Effects and removal of oil impurities
Oil impurities will make the bright acid copper plating fogged, produce pinholes, and seriously affect the bonding of the plating. Removal of oil impurities is generally emulsified with an emulsifier to emulsify the oil, and then use activated carbon to remove the emulsified oil and excess emulsifier adsorption. The specific treatment steps are as follows:
①Heat the plating solution to 50~60 degrees Celsius, add dissolved sodium dodecyl sulfate 0.3~0.5g/liter while stirring, and control the stirring time at about 60 minutes.
② Add 3~5 g/l of activated carbon with stirring, and then stir for about 30 minutes, followed by the same treatment steps as ③ and ④ for organic debris.
Conclusion
Customers in the use of Bigely acid copper brightener, if encountered plating streaks fault, it is recommended that the first two directions to go from the above to carry out troubleshooting, if still can not be resolved, you can contact our engineers to provide technical support services.
If you are interested in acid copper brightener, please feel free to contact us.
