The anti-corrosion method of the fence has a lot to do with the service life of the fence. The senior engineer said: Generally speaking, the service life of the road fence is about 10 years. Some small manufacturers without scale occupy the market with low prices. In order to reduce the cost of production isolation The grid is shoddy, and the use time is 3-4 years, which cannot meet the use requirements at all. Here we tell our customers, so you must choose a regular and professional manufacturer to buy railway isolation barriers, and you must not be greedy to buy low-quality products at low prices. The fence is also known as: isolation fence, which is a fence with metal mesh sheets stretched on the support structure to prevent people and animals from entering the road boundary.

Isolation fences should be installed on both sides of expressways and first-class automobile-specific highways. And to prevent illegal encroachment of road land. One of the anti-corrosion methods of fence mesh: dip molding, the more mature dip molding method in China is: powder dip molding method, which originated from the fluidized bed method, the so-called fluidized bed was originally applied to the Winkler gas generator. The oil is contacted and decomposed, and the solid-gas two-phase contact process is developed, which is gradually used in metal coating and plastics. So sometimes it is still called “fluidized bed coating method”. The actual process is to add the powder coating into the porous and ventilated container (flow tank) at the bottom, and the treated compressed air is fed from the bottom by the blower, so that the powder coating is turned over to achieve “flow”. state”. A finely divided powder with uniform distribution. We know that the fluidized bed is the second stage of the solid fluid state (the first stage is the fixed bed stage, and the second stage is the gas delivery stage). On the basis of the fixed bed, the flow rate (W) continues to increase, and the bed begins to expand and After loosening, the height of the bed begins to increase, and each powder particle is floated, so it moves away from its original position to a certain extent, and then it enters the fluidized bed stage. Section bc shows that the powder layer in the fluidized bed expands, and its height (I) increases with the increase of gas velocity, but the pressure (ΔP) in the bed does not increase, and the flow velocity changes within a certain range without affecting the fluid flow. The required unit power, which is the characteristic of the fluidized bed, is used for the implementation of the coating process. The uniformity of the fluidized state of the powder in the fluidized bed is the key to ensure the uniformity of the coating film. The fluidized bed used in powder coating belongs to “vertical fluidization”, and the number of fluidization must be found out through experiments. Generally, it is enough to be able to coat. The suspension rate of powder in the fluidized bed can reach up to 30-50 %.

The railway isolation grid, municipal isolation grid and bilateral isolation grid are all preheated to above the melting point of the powder coating after degreasing. After being immersed in the fluidized bed, the plastic powder will adhere evenly, and then the plasticized polymer cross-linked and leveled to form a steel-plastic composite. product.