In the production process of using nickel plating brightener, due to the certain deformation of the metal nickel crystal or the inclusion of different phases, a certain internal stress will be generated in the coating.When the internal stress of the nickel layer is large, the hardness of the coating will be relatively large, but it is easy to peel, crack or have poor ductility.So, what factors are related to the internal stress of the nickel layer?
When the galvanizing plant uses trivalent chromium blue zinc passivation agent for production, if the salt spray resistance of the workpiece coating is not good, it will affect the quality of the workpiece.Especially in the rainy season, some workpieces have been corroded during transportation and storage. Is this trivalent chromium blue zinc passivator not easy to use?
In our galvanizing production process, sometimes the coating is prone to fogging after passivation of the workpiece, which will seriously affect the appearance and performance characteristics of the coating.So how should we use the galvanized trivalent chromium passivator correctly to avoid fogging of the passivation film of the workpiece?
When we use galvanized trivalent chromium passivation agent, due to improper operation and management, the use of passivation solution is often unstable, which affects the passivation effect of the workpiece.This also shortens the service life of the passivation solution, thereby increasing the production cost.So what points should we pay attention to when using galvanized trivalent chromium passivator?
In the alkaline galvanizing process, sometimes the workpiece is very clean in the pretreatment, but the coating foams after alkaline galvanizing.Is this caused by excessive addition of alkaline galvanizing additives?
When aluminum workpieces are produced using medium-phosphorus electroless nickel plating solution, sometimes the coating appears mottled. Although it does not affect the bonding force and corrosion resistance of the workpiece, it seriously affects the appearance of the workpiece.So, how does the coating of the workpiece appear mottled?
