There are two main ways to galvanize galvanized chains: hot-dip galvanizing and electroplating galvanizing, each with its own characteristics and suitable for different application scenarios.
Hot dip galvanizing is the process of immersing a chain in molten zinc to form a thick and strong zinc coating on its surface. This method can provide very strong corrosion protection, especially suitable for outdoor use and chains exposed to harsh environments. The zinc layer of hot-dip galvanizing has a relatively thick thickness and usually has strong durability, which can resist the erosion of moisture, air, salt, etc. It is widely used in industries, agriculture, and construction.
Electrogalvanizing is the process of depositing zinc on the surface of a chain through electrolysis, forming a thin and uniform layer of zinc. The zinc layer of electroplated zinc is relatively thin, so its corrosion resistance is relatively poor, making it suitable for environments with lower protection requirements or when a smooth appearance is required on the surface of the chain. The electroplating method is usually suitable for applications that are not exposed to extreme weather or salt spray environments, such as lightweight facilities or indoor use.
In addition to these two main galvanizing methods, there are also other galvanizing methods such as mechanical galvanizing and thermal spray galvanizing, which are often used for specific application needs. Mechanical galvanizing is achieved by rubbing a chain and zinc powder together in a high-speed rotating drum, causing zinc to adhere to the surface; Hot spray galvanizing is the process of coating the surface of a chain with zinc metal by high-temperature spraying. These two methods are commonly used in applications where different requirements for galvanizing thickness or corrosion resistance are needed.