Hot dip galvanizing: also known as hot dip galvanizing and hot dip galvanizing: is an effective way of metal corrosion protection, mainly used in various industries on metal structure facilities. The rust-removing steel is immersed in the molten zinc at about 500 C, so that the surface of the steel components is coated with zinc, so as to achieve the purpose of corrosion protection.
Cold galvanizing: electric galvanizing, the amount of zinc is less, only 10 - 50g/m2, is the use of electrolysis to make metal or other materials on the surface of a layer of metal film attached to the process. The formation of a uniform, dense, well-bonded metal layer can prevent corrosion, improve wear resistance, electrical conductivity, reflectivity and enhance aesthetics.
The difference between hot galvanizing and cold galvanizing:
1. Hot-dip galvanizing is several times as much as cold-dip galvanizing because of its different corrosion resistance.
2, the way of operation is different: hot dip galvanizing is zinc in 450-480 degree molten zinc. Cold plating is galvanized or other zinc plating at normal temperature.
3. The thickness of hot-dip galvanizing is much larger than that of cold-dip galvanizing.
4. Different surface smoothness, cold galvanized surface than hot galvanized smooth and beautiful.
5. The price of hot-dip galvanizing is higher than that of cold-dip galvanizing.
6. Cold galvanizing can be done on only one side, hot galvanizing should be done completely.
7. The adhesion of cold galvanizing is lower than that of hot galvanizing.
8. The charges are different. Hot galvanizing is charged according to the thickness of the material. Cold galvanizing is mostly charged according to the thickness of the material.
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