First of all, the basic surface treatment of zinc-aluminum alloy locking handles is anodizing. Anodizing can form a dense oxide film on the surface of the handle, which can not only enhance the hardness of the handle, but also improve its corrosion resistance. The thickness and uniformity of the oxide film directly affect the corrosion resistance. A thicker and more uniform oxide film can effectively prevent the corrosion of zinc-aluminum alloy by external substances.
Secondly, coating treatment is a key link. By applying organic coatings, such as paints, plastic coatings, etc., air and moisture can be further isolated. These coatings can fill the tiny pores on the surface to prevent oxygen and water from contacting the zinc-aluminum alloy, thereby reducing the possibility of corrosion. For example, zinc-aluminum alloy locking handles used outdoors can effectively resist erosion by rain, ultraviolet rays, etc. after coating treatment.
Furthermore, electroplating is also a commonly used surface treatment method. The electroplating layer can form a metal coating on the surface of the zinc-aluminum alloy, which has good corrosion resistance. For example, a layer of nickel is plated on the surface of zinc-aluminum alloy. The nickel plating can effectively prevent the oxidation of zinc-aluminum alloy and improve its corrosion resistance.
In addition, surface passivation treatment can form a passivation film on the surface of zinc-aluminum alloy. This film can reduce the activity of the surface of zinc-aluminum alloy, making it less likely to react with external substances, thereby improving the corrosion resistance.
In practical applications, different surface treatment processes have different effects on the corrosion resistance of zinc-aluminum alloy locking handles. For example, in a humid environment, zinc-aluminum alloy locking handles are susceptible to corrosion, but after surface treatment, their corrosion resistance is significantly improved.
At the same time, the quality of the surface treatment process will also affect the corrosion resistance of zinc-aluminum alloy locking handles. For example, in the process of surface treatment, if the treatment is not done properly, defects may appear on the surface, thereby reducing the corrosion resistance.
The surface treatment process has an important influence on the corrosion resistance of zinc-aluminum alloy locking handles. By selecting a suitable surface treatment process, the corrosion resistance of zinc-aluminum alloy locking handles can be improved and its service life can be extended.
