What are the advantages of widely used hot-dip galvanizing design?

With industrial development, the design of the hot dip galvanized products have been applied to many fields, the advantages of hot galvanizing is anticorrosion fixed number of year, for a long time to adapt to the environment are widely has always been a popular method for prevention of corrosion. 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 corrosion protection, but in different environments it varies: 13 years in heavy industrial areas, 50 years in the ocean, 104 years in the suburbs and 30 years in cities.

Principle: galvanized iron to clean clean, then solvent treatment, drying after immersed in liquid zinc, iron and zinc layer of molten zinc reaction produces a alloying, the process for: degreasing, washing, pickling, helps the plating - drying - hot dip galvanized, separation, cooling passivation.

Of hot galvanizing alloy layer thickness depends mainly on the silicon content of steel and other chemical ingredients, cross-sectional area of the steel bar, steel surface roughness, temperature of zinc pot, zinc dipping time, cooling speed, cold rolling deformation, etc.

Advantages of hot galvanizing:

1. Low processing cost: the cost of hot-dip galvanizing for rust prevention is lower than that of other paint coatings;

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

3. Good reliability: the galvanized layer is metallurgical combination with the steel, becoming a part of the steel surface, so the durability of the coating is relatively reliable;

4. Strong toughness of the coating: the galvanized layer forms a special metallurgical structure, which can withstand mechanical damage when transported and used.

5. Comprehensive protection: each part of the plating piece can be plated with zinc, which can be fully protected even in the pits, sharp corners and hiding places.

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

7, low initial cost: in general, the cost of the hot-dip zinc is lower than on other protective coating, the reason is very simple, other protective coating, such as sand and paint is labor intensive, and hot dipping zinc process for high mechanization, tightly controlled plant construction.

8. Simple and convenient inspection: the hot-dip zinc layer can be visually inspected and the simple non-destructive coating thickness meter can be used for testing

9. Reliability: the specification of hot-dip zinc is generally carried out in accordance with BS EN ISO 1461, which limits the minimum thickness of its zinc layer, so its rust-proof period and performance are reliable and predictable.

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