Finding the most effective and long-lasting option for protecting the surface of metals used in parts across industries can be a challenge. Specific types of applications, typically use one type of metal finishing solution that is based on the corrosion resistance required and the ability to protect the surface of the part from damage.
Other types of applications may be suitable for one or more options in metal finishing. In these types of applications, two common options are zinc electroplating or powder coating.
Two Different Processes
Powder coating uses the electrostatic application of dry powder, which is then cured with heat to create a complete surface over the metal. The powder is a thermosetting or thermoplastic material, and it can be custom colored and applied to different thicknesses.
Powder coating, while strong and durable, can be chipped, scratched, and damaged. It is also a challenge to use on parts with high tolerances, threads, or extremely complex shapes as the thickness of the plastic coating can become problematic.
The zinc electroplating process, on the other hand, bonds at a molecular level with the surface of the metal through the plating process. This makes it extremely resistant to any type of surface damage, providing a more complete protection for the part or component.
Additionally, the zinc electroplating process can provide a very thin, uniform coating over the entire metal piece that is consistent and meets high tolerance requirements. For complex parts or for parts with threads, zinc plating offers superior corrosion resistance protection.