Passivation

"In this method, a process on the surface of zinc, zinc-iron or zinc-nickel produces a defined thin and durable passivation coating, which enhances corrosion resistance. The different passivation processes differ with regard to corrosion protection, appearance, coating thickness and colouring. Often the passivation processes are additionally enhanced by seals (topcoats). These topcoats not only provide even greater corrosion protection, but also provide a more uniform appearance. The topcoats are adjustable to define the friction properties. Passivation processes are provided exclusively chrome-6 free."

Made by precision casting (water glass), material Material CF8M, with passivation as surface treatment, 3kg, annual demand 200pcs

Service for pickling and passivation of welded stainless steel components.

The double anodization process can be used to create a protective anodization layer on various parts of a consumer electronic product, including top and bottom portions, side walls, and chamfered portions. It’s particularly useful for improving corrosion resistance and wear resistance, and it provides better adhesion for paint primers and glues than bare metal does. The process is not limited to aluminum; it can also be applied to other metals like titanium, zinc, magnesium, and others. However, aluminum is the most common due to its widespread use in consumer electronics and other applications where weight and durability are important factors.Double anodization is a complex process that requires precise control over the electrolytic solutions, electrical current, and time to ensure the desired outcome. It’s a testament to the advancements in materials engineering and its ability to tailor the properties of metals for specific applications.