Hulan Wang in the production of fence, the fence after the process of dealing with a mixture of plastic and spray two methods, then, fence wire and spray what is the difference between it?

The product is made of steel as the matrix, weatherability polymer resin for the outer layer (thickness 0.5-1.0mm), with anti-rust, acid and alkali, moisture, insulation, anti-aging, feel good, environmental protection, long life and other characteristics , Is the traditional paint, galvanized and other coating of the replacement products, widely used.

Dipping principle

(1) powder impregnation originated in the fluidized bed method, the fluid bed was originally used in the Winkler gas furnace on the use of oil contact decomposition, and then developed a solid gas two-phase contact process, and gradually used in metal coating The It is sometimes called "fluidized bed coating method", the actual process is to add the powder coating to the bottom of the porous breathable container (flow tank), by the blower from the next into the treated compressed air, so that the powder coating up to "flow State ". Become a uniform distribution of scattered powder.

The fluidized bed is the second stage of the solid flow (the first stage is the fixed bed stage and the second stage is the air transport stage). The flow rate (W) is continued on the basis of the fixed bed, the bed begins to expand and loosen, The bed height begins to increase, and each powder particle is floated, leaving a certain degree of movement away from the original position, which then enters the fluidized bed stage. (I) increases with the increase of the gas velocity, but the pressure in the bed (△ P) does not increase, and the flow rate does not affect the fluid in a certain range without affecting the fluid velocity of the fluidized bed. The unit power required, which is the characteristics of the fluidized bed, is the use of this feature to carry out the coating process. The uniformity of the fluidized state in the fluidized bed is the key to ensure uniformity of the coating. In the powder coating on the use of fluidized bed is "vertical fluidization", the number of fluidization must be tested to find, generally can be coated, fluidized bed powder suspension rate of up to 30 ~ 50 %.

(2) the process is as follows:

The workpiece is preheated to the powder coating above the melting point, impregnated into the fluidized bed after the plastic powder will be evenly adhered, and then plasticized polymer cross-flow into a steel-plastic composite products.

(3) coating material thermoplastic powder coating with heat softening, cooling and then curing the characteristics of film, mainly physical melt plastic film forming process. Most of the dipping process using thermoplastic powder, typically polyethylene, polyvinyl chloride, polytetrachlorethylene, suitable for non-toxic coating, for the general decoration, corrosion, wear-resistant coating.

Spraying process principle: electrostatic powder coating equipment (electrostatic spray machine) to spray the powder coating to the surface of the workpiece, under static electricity, the powder will be evenly adsorbed on the surface of the workpiece to form a powder coating; powder coating After the high temperature baking leveling, the effect becomes different (the effect of different kinds of powder coating effect); the spraying effect is superior to the painting process in terms of mechanical strength, adhesion, corrosion resistance, aging resistance and so on. With the effect of painting under.

All in all, spray products for indoor use, dipping products for outdoor use, fence wire than the spray high.