There are many different options in metal finishing, including the use of a variety of types of zinc electroplating processes. Top metal finishing companies go out of their way to work with OEMs to ensure the finishing process selected meets the long-term requirements for the protection of parts and components based on a range of different factors.
Not all types of zinc electroplating options are the right choice for all applications. A great example of this can be found in the choice of zinc nickel plating. By understanding the pros and possible considerations of the process, the metal finishing company and the OEM can easily determine how the pros and cons line up for the specific part.
The Positives of the Process
As a general statement, the more demanding the application, the more likely it is that zinc, nickel plating rather than basic zinc electroplating is the best choice. This is often true for parts used in the automotive, aerospace, and military and defense industries where parts need to have extended life cycles and high corrosion resistance in extreme types of conditions.
It is also a top choice when constant exposure to moisture, humidity, and water is a factor. Parts and components in lawn and garden equipment, irrigation systems and in processing applications are often finished using this option.
The choice of zinc nickel over standard zinc plating offers about four times the corrosion resistance. This plating also doubles the surface hardness for the part over standard zinc.
The Considerations
The most significant consideration in choosing zinc nickel plating is the higher cost of the process. At the same time, the higher corrosion resistance and hardening benefits for the parts can easily offset the price difference, particularly on critical parts and components in a system.
