Home / Chain Link Fence /

Chain link fence maintenance points

The surface treatment of the chain link fence determines its long service life.

 

The surface treatment methods of chain link fence mainly include cold galvanizing (galvanizing), hot galvanizing, spraying and dipping. Among them, hot-dip galvanized + plastic steel mesh fence products have the longest service life. Cold-galvanized products are easy to rust, and the effect of spraying plastic is not as good as dipping, but some products are not suitable for dipping and can only be sprayed, such as peach pillars.

Chain link fence dipping process: The commonly used anti-corrosion method for fence netting is powder dipping method, which originated from the fluidized bed method. The so-called fluidized bed was originally applied to the contact decomposition of petroleum in the Winkler gas generator, and later developed into a solid-gas two-phase contact process, which was gradually used in metal coatings and plastic coatings. So it is still sometimes called "fluidized bed coating method". The actual process is to add the powder coating into the porous and air-permeable container (flow tank) at the bottom, and the treated compressed air is sent by the blower to turn the powder coating over to achieve "fluidization". state" and become a fine powder with uniform distribution.

The impregnation process of the chain link fence is completed in two stages: the first stage is the fixed bed stage, and the second stage is the air conveying stage. On the basis of a fixed bed, the flow rate (W) continues to increase, and the bed layer begins to expand and loosen. The height of the bed layer begins to increase, and each powder particle floats up, thus moving away from the original position to a certain extent, and entering the fluidized bed stage. It shows that the powder layer in the fluidized bed expands, and its height (I) increases with the increase of air velocity, but the pressure (△P) in the bed does not increase, and the flow velocity must be within a certain range without affecting the fluid. The unit power, that is, the characteristic of the fluidized bed, is to use this characteristic to implement the coating process. The uniformity of the powder fluidized state in the fluidized bed is the key to ensure uniform coating, the longer the soaking time, the thicker the coating. Coating thickness can reach 0.8-1.0mm.

Pre：Chain link fence use knowledge

Next：Plastic-coated chain link fence installation, simple and convenient