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Principle and advantages of hot dip galvanizing

2023-01-13 10:42:40.592

Release time:

2023-01-13

Principle and advantages of hot dip galvanizing

Hot dip galvanizing principle: clean the iron, then solvent treatment, after drying immersed in zinc liquid, iron and molten zinc reaction to produce an alloyed zinc layer, the process is: degreasing - washing - pickling - assisted plating - drying - hot dip galvanizing - separation - cooling passivation. The thickness of the alloy layer of hot-dip galvanizing mainly depends on the chemical composition of the steel such as the silicon content, the size of the cross-sectional area of the steel, the roughness of the steel surface, the temperature of the zinc pot, the time of dipping zinc, the speed of cooling, and the deformation of cold rolling.

Advantages of hot dip galvanizing
1, treatment cost paper: the cost of hot-dip galvanized rust prevention is lower than the cost of other paint coatings

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

3, good reliability: galvanized layer and steel is metallurgical combination, become a part of the steel surface, so the durability of the coating is more reliable;

4, the toughness of the coating is strong: the galvanized 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, even in the depression, sharp corners and hidden places can be fully protected;

6, save time and effort: the galvanizing process is faster than other coating construction methods, and can avoid the time required to brush the top picture on the site after installation;