Bohai Steel Structure Co., Ltd.

Bohai Steel Structure Co., Ltd.
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    ADD: Longhua Development Zone, Jing County, Hengshui City, Hebei Province

    Hengshui steel structure spray molding process

    author:Bohai Steel Structure Co., Ltd.

    【Font size: big medium smail

    time:2019-08-23 09:50:16

    1, pre-treatment: purpose: to remove the oil, dust, rust on the surface of the workpiece, and to form a "phosphating layer" on the surface of the workpiece that is corrosion-resistant and can increase the adhesion of the spray coating. Main process steps: degreasing, descaling, phosphating, passivation. After the pre-treatment of the workpiece, not only the surface has no oil, rust and dust, but also a uniform and rough gray phosphating film which is not easy to rust on the silver-white shiny surface, which can not only rust and increase the number of paints, but also can increase the number of paints, such as rust-proofing, and can increase the number of smoulders. Adhesion of the layer.

    2, electrostatic spraying purposes: the powder coating is evenly sprayed onto the surface of the workpiece, special workpieces (including locations that are prone to electrostatic shielding) should be sprayed with high-performance electrostatic 59999xa > spray 59095x/a> machine. Process steps: Using the principle of electrostatic adsorption, a layer of powder coating is evenly sprayed on the surface of the workpiece; the dropped powder is recovered by a recovery system and can be reused after being sieved.

    3, high temperature curing purpose: the powder coating on the surface of the workpiece is heated to the specified temperature and kept for the corresponding time, so that it melts, leveles and solidifies, so as to obtain the desired surface effect of the workpiece. Process step: push the sprayed workpiece into the curing oven, heat to a predetermined temperature (generally 185 degrees), and keep the corresponding time (15 minutes); Generally, the workpiece is different, and the heating temperature and the holding time are also different. Tip: heating and control system (including electric heating, fuel, gas, coal and other heating methods) insulation box = curing oven.

    4, Cooling Outlet Cooling is a process of cooling the result of the process of returning to normal temperature by the result of the process of sprayed . 5, decorative processing purposes: to make the workpiece after electrostatic spraying to achieve a certain special appearance such as: a variety of wood grain, pattern, lightening and so on. Process steps: cover light; transfer process, etc. .

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