Brief introduction of fence net anti-corrosion method and service life
The anti-corrosion method of the fence net has a great relationship with the service life of the fence net. The senior engineer said:
Generally speaking, road fence nets have a service life of 10 years. Some small manufacturers with no scale occupy the market at low prices. In order to reduce costs, they produce isolation fences If it is shoddy, the use time is 3-4 years, which can not meet the use requirements at all. Here we tell our customers, so when buying railway isolation barriers, you must choose a formal and professional manufacturer, and we must not try to buy products of poor quality at a cheap price.
fence net is also called: isolation fence, which is a fence with metal meshes tightened on the supporting structure to prevent humans and animals from entering the highway. We know that the fluidized bed is the second stage of the solid fluid state (the *** stage is the fixed bed stage, and the second stage is the gas flow conveying stage). On the basis of the fixed bed, continue to increase the flow rate (W), and the bed begins to expand. With loosening, the height of the bed layer begins to increase, and each powder particle is floated, and thus moves away from the original position to a certain extent, and then 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 in the bed (△P) does not increase, and the flow rate is changed within a certain range without affecting the fluid The required unit power is the characteristic of the fluidized bed, which is used to implement the coating process. The uniformity of the powder fluidization state in the fluidized bed is the key to the uniformity of the coating film.
Isolation fences should be installed on both sides of the expressway and the first-class automobile highway. And to prevent illegal encroachment on highway land.
One of the anti-corrosion methods of fence net:
dipping, the more mature dipping method in China is: powder dipping method, which originated from the fluidized bed method, the so-called fluidized bed was originally used in the Winkler gas generator for petroleum contact decomposition, Furthermore, a solid-gas two-phase contact process was developed, which was gradually used for metal coating. So sometimes it is still called the "fluidized bed coating method". The actual process is to add the powder coating to a porous and air-permeable container (flow trough) at the bottom, and the treated compressed air is fed from below by a blower to turn the powder coating to a "flow". Status”. Become a uniformly distributed fine powder. Railway Fence, Municipal Fence Mesh, Bilateral Fence Mesh are all degreasing and preheated to above the melting point of the powder coating, and the plastic powder will stick evenly after being immersed in the fluidized bed. Attached, and then plasticized polymer cross-linked leveling into steel-plastic composite products.