Galvanized flange

Galvanized flange generally refers to hot dip galvanized flange, flange has good corrosion resistance, hot dip galvanized after he is made in flange forming derusting into the liquid zinc melting around 500 ℃, the zinc layer adhered on the surface of the steel members, which have the purpose of corrosion protection.

Hot galvanizing is an effective method of metal embalming, which is mainly used in the metal structure of various industries. Is around 500 ℃ after cleaning of steel in liquid zinc melting, the zinc layer adhered on the surface of the steel members, which have the purpose of corrosion. Hot galvanizing has a long history of corrosion protection, but it is not the same in different environments: 13 years in heavy industrial zone, 50 years in the ocean, 104 in the countryside, and 30 years in the city.

Hot galvanizing process:

The finished product pickling - wash - add - drying - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

Hot galvanizing principle

Clean iron clean, then solvent treatment, drying after immersed in zinc liquid, 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 is mainly depends on the silicon content of steel such as chemical composition, 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. Processing fee paper: the cost of hot dip galvanizing anti-rust is lower than that of other paint coatings;

2. Durable and durable: in the suburb environment, the standard hot-dip galvanized anti-rust thickness can be kept for more than 50 years without repairing; In urban or offshore areas, the standard hot-dip galvanizing coating can be kept for 20 years without repair;

3. Good reliability: the zinc coating and steel are metallurgical and a part of the steel surface, so the durability of the coating is reliable.

4. Strong toughness of the coating: a special metallurgical structure is formed by the zinc coating, which can withstand mechanical damage when transported and used.

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

6. Time and effort: the process of galvanizing is faster than other coatings, and it can avoid the time required to paint the paint on the site after installation.