Electroplating and hot-dip galvanizing are two common techniques for protecting chain surfaces from corrosion. Both involve coating the chain surface with a layer of zinc to enhance its corrosion resistance. Although their final results may appear similar, these two methods differ significantly in terms of process, durability, and suitable applications.
Hot-Dip Galvanized chain
Process and Coating: A thick layer of zinc-iron alloy coating is formed by fully immersing in molten zinc liquid.
Performance and Appearance: It boasts outstanding long-term anti-corrosion properties and high strength, but its appearance is usually a dark gray color.
Application and Maintenance: Particularly suitable for outdoor use and structural components. The coating has self-repairing capabilities and can last for 20 to 50 years.
Electroplated Zinc Chain
Process and appearance: The zinc layer is formed through electrochemical deposition, and the coating is uniform with a smooth and shiny surface.
Protection performance: It has good corrosion resistance, but the coating is relatively thin. In terms of durability and resistance to damage, it is inferior to hot-dip galvanizing.
Application scenarios: Primarily used in indoor dry environments and in situations that emphasize appearance, such as furniture hardware and decorative chains. The overall service life is relatively short.
To select the appropriate galvanizing process, it is necessary to determine based on the specific application requirements:
If the component is small in size or requires a shiny appearance and only needs moderate corrosion resistance, electro-galvanized is the ideal choice.
For large structural components, building materials, and outdoor applications exposed to harsh environments, hot-dip galvanizing is more suitable. Its thicker coating can provide outstanding long-term corrosion protection, and is particularly suitable for engineering fields with strict durability requirements.