Compared with the electro-galvanizing process, the hot-dip galvanizing process has the following advantages:
1. Corrosion resistance: The corrosion resistance of the hot-dip galvanized layer is at least 4 times that of the electro-galvanized layer. The hot-dip galvanized layer is thicker, with a minimum thickness of 45 microns and a maximum of more than 300 microns, while the electro-galvanized layer is thinner, only 3-15 microns.
2. Strong adhesion: The hot-dip galvanized layer is tightly bonded to the steel through intermetallic compounds, and the adhesion and wear resistance are more superior. In contrast, the adhesion of electro-galvanizing is weaker.
3. Durability: The weather resistance and long-term protection effect of hot-dip galvanizing are superior. The hot-dip galvanized zinc layer that meets the standards can generally be used for more than 20 years, while the electro-galvanized zinc layer that meets the standards can generally be used for 2 to 5 years.
4. Adaptability: The hot-dip galvanizing process does not use harmful substances, meets environmental protection requirements, and does not pollute the environment.
5. Maintenance cost**: Products treated with hot-dip galvanizing do not require regular maintenance, saving maintenance costs.
6. Scope of application: The hot-dip galvanizing process has a wide range of applicability and is suitable for products of various shapes and sizes.
The hot-dip galvanizing process has obvious advantages over the electrogalvanizing process in terms of corrosion resistance, adhesion, durability, environmental adaptability, maintenance cost and scope of application.
