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    Home > Coatings News > Paints and Coatings Market > Electrostatic powder spraying process and related materials

    Electrostatic powder spraying process and related materials

    • Last Update: 2020-02-25
    • Source: Internet
    • Author: User
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    Electrostatic spraying process principle: spray the powder coating on the surface of the workpiece with electrostatic spraying equipment (electrostatic spraying machine) Under the action of electrostatic, the powder will be evenly adsorbed on the surface of the workpiece to form a powder coating The powder coating is baked at high temperature and leveled and solidified to become the final coating with different effects (different kinds of effects of powder coating) The spraying effect is in mechanical strength Adhesion, corrosion resistance, aging resistance and other aspects are better than spray painting process, and the cost is also under the same effect of spray painting 1 Pretreatment process: oil removal, rust removal, phosphating and passivation After pre-treatment, the surface of the workpiece is free of oil, rust and dust, and a uniform and rough gray phosphating film which is not easy to rust is formed on the original silver white shiny surface, which can not only prevent rust, but also increase the adhesion of the plastic spraying layer Related equipment and raw materials: pretreatment tank (concrete tank); related chemicals: sulfuric acid, hydrochloric acid, soda ash (Na2CO3) acid degreaser, phosphating solution, passivation solution 2 Electrostatic spraying process: spray a layer of powder evenly on the surface of the workpiece based on the electrostatic adsorption principle, and the fallen powder can be recovered through the recovery system, and can be reused after screening Related equipment and raw materials: electrostatic spray molding machine (electrostatic powder spraying machine), powder recycling system, powder coating 3 High temperature curing process: push the sprayed workpieces into the oven, heat them to a predetermined temperature (185 degrees in general), and keep them warm for a corresponding time (15 minutes); open the oven and take them out for cooling to get the finished products Relevant equipment and raw materials: curing furnace (temperature control, time control); curing furnace heating mode: electric heating; fuel oil heating 4 Decoration treatment process: the treatment process adopted for electrostatic spraying of workpieces to achieve a certain appearance effect, such as: all kinds of wood grain, etc (covering, transfer, etc.)
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