With the development of industry, hot-dip galvanizing products have been used in many fields. The advantage of hot-dip galvanizing lies in its long life and its wide application to the environment has been a popular method of anti-corrosion treatment. It is widely used in power tower, communication tower, railway, highway protection, road lamp pole, Marine component, building steel structure component, substation accessory facilities, light industry, etc.

Hot-dip galvanization has a long history of preservation, but it varies in different environments: 13 years in heavy industrial areas, 50 years in the ocean, 104 years in the suburbs and 30 years in the city.

The principle of hot galvanizing: clean iron parts, then treat with solvent, dry them and immerse them in zinc liquid. Iron reacts with molten zinc to form an alloying zinc layer. The process is as follows: degreasing -- washing -- pickling -- electroplating -- drying -- hot dip galvanizing -- separating -- cooling passivation.

The thickness of hot-dip galvanized alloy layer mainly depends on the silicon content of steel, the cross-sectional area of steel, the roughness of steel surface, the temperature of zinc pot, the time of zinc immersion, the speed of cooling and the deformation of cold rolling.

Advantages of hot galvanizing

1. Low treatment cost: the cost of hot-dip galvanizing and rust prevention is lower than that of other paint coating;

2. Durable and durable: in the suburban environment, the standard thickness of hot-dip galvanization and rust prevention can be maintained for more than 50 years without repair; In urban areas or offshore areas, the standard hot-dip galvanization rust protection layer can be maintained for 20 years without repair;

3. Good reliability: the galvanizing layer and the steel are combined with metallurgy and become part of the steel surface, so the durability of the coating is relatively reliable;

4. Strong toughness of the coating: the galvanizing layer forms a special metallurgical structure, which can withstand mechanical damage during transportation and use;

5. Comprehensive protection: every part of the plating can be plated with zinc, which can be fully protected even in the depression, sharp Angle and hidden places;

6. Save time and effort: the galvanizing process is faster than other coating construction methods, and the required time for coating on the site after installation can be avoided.

7. Low initial cost: generally, the cost of hot dip zinc is lower than that of other protective coatings. The reason is very simple.

8. Simple and convenient inspection: hot dip zinc layer can be visually tested and simple non-destructive coating thickness table can be tested

9. Reliability: the specification of hot dip zinc is generally implemented in accordance with BS EN ISO 1461, which limits its minimum zinc layer thickness, so its antirust years and performance are reliable and predictable.