Changzhou Qiaobang Storage Equipment Co.,Ltd

Changzhou Qiaobang Storage Equipment Co.,Ltd

Why a hot-dip galvanized wire mesh tray can anti-rusty?

First:Introduction of hot-dip galvanization

           Hot-dip galvanized  for metals ,is an effective anti-corrosion method. It is mainly used for outdoor metal anticorrosion requirements on high structure facilities. Its working principle is to immerse the steel in a zinc solution with a temperature of about 500 degrees, so that the surface of the steel is attached to the zinc layer so as to achieve the purpose of anticorrosion. Recently, with the rapid development of industrialization, the requirements for the protection of the surface of steel parts are becoming higher and higher, and the demand for hot-dip galvanizing is increasing quickly.

Second:Protective performance of hot- dip galvanization

                Normally, electro-galvanization thickness in the 5μm-20μm, in accordance with international standards  thickness of wire mesh cable tray is more than12 μm, but the hot galvanizing thickness is generally at least 35 m, even up to 200μm. Hot-dip galvanization  thickness of wire mesh cable tray is in 60μm-80μm.  Anti-corrosion and covering ability is very well, no organic sundrie . As everyone knows the mechanism of zinc atmospheric corrosion resistance mechanical protection and electrochemical protection in atmospheric corrosion conditions of zinc layer on the surface of ZnO, Zn (OH) 2 and basic zinc carbonate corrosion protective film, to a certain extent reduce zinc, this layer of protective film (also called white rust damage) will form a new film. When the zinc layer is severely damaged and endangers the iron matrix, zinc can protect the matrix from electrochemical protection. The standard potential of zinc is -0.76V, the standard potential of iron is -0.44V. When zinc and iron form micro batteries, zinc is dissolved as anode, and iron is used as the cathode to be protected.

Third:Hot- dip galvanization technology

          Feeding-pickling-washing-solvent-drying-hot galvanizing- inside- outside-rolling-rolling-marking, marking-passivation- inspection and packing

The anticorrosion years of hot-dip galvanizing are long, but the years of anticorrosion in different environments are different: 13 years in heavy industrial areas, 50 years in the ocean, 104 years in the suburbs, and 30 years in the city.

Fourth: Hot- dip galvanization hot spots

1, corrosion resistance is good, durable: in the harsh environment of the suburbs, the standard hot-dip galvanizing anti rust thickness can be maintained for more than 50 years without repairing. In the urban or offshore areas, the standard hot-dip galvanized antirust coating can be maintained for 20-30 years without having to be repaired.

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

3, the toughness of the coating is strong: the galvanized layer forms a special metallurgical structure, which can withstand mechanical damage when it is transported and used.

4, comprehensive protection: every part of the plating piece can be plated with zinc, even in the sunken, the sharp corner and the hiding place can be fully protected.

5, simple test: non destructive test of hot dip galvanized coating thickness surface layer can be visual and simple;

6, reliability: in accordance with the specifications for BS EN hot dip galvanized ISO 1461 implementation, the lowest limit of zinc layer thickness, so the antirust period and the performance is reliable.

Fifth Why  choose a hot-dip galvanized basket cable tray ?

1. The hot-dip galvanized basket cable tray  can be adapted to the harsh environment and can be used in corrosive and humid environments. For example, outdoor, basement, chemical plant and so on. It can be applied to wind energy, nuclear power plant, solar energy and other industries

2. The adhesive force of the hot-dip galvanizing  cable tray  is very strong, and the thickness of the zinc layer is uniform.

3. The service life of the galvanized cable tray is long, and  Qiaobang wire mesh cable tray is guaranteed for 15 years.

4. The thickness of zinc layer in the hot-dip galvanized bridge of Qiaobang is more than 60-80 um

5. The hot-dip galvanized bridge will not rust

6. The possibility of zinc layer destruction in the process of transportation of hot-dip galvanized bridge is small