Pretreatment purpose: to remove the coated pieces brought foreign matter such as scale, rust, grease, etc., to provide for the requirements of a good substrate for coating spray equipment, such as phosphate, oxidation, passivation to ensure the coating has good The corrosion resistance and decorative properties, pretreatment equipment is divided into physical formula, chemical formula. 1, the physical style: ① remove impurities attached to the steel surface, with thinner to remove grease and other dirt. ② If sulfate or corrosive salts, should be washed with water, with compressed air. ③ on the steel plate pretreatment line spray equipment poles to blasting or sand-blasting method to scale, rust and other impurities cleaned and purified with a vacuum cleaner or compressed air to the steel surface to be cleaned. 2, the chemical formula: 1, immersion, injection, spray dip combine style, spray - dip - a combination of jet type. 2, acid, phosphate slag and oil-water separation equipment is the key to the system of electrostatic spraying equipment, phosphate slag there is sedimentation method, a spin-liquid separation method, inclined plate sedimentation, filtration bag, filter presses and other common Methods. 3, oil and water separation are: adsorption, ultrafiltration, heat oil separation and centrifugation method. Device for electrophoretic coating by electrodeposition coating device electrophoresis tank, stirring means, paint filter means, temperature control means, coating management apparatus, a DC power supply device, after washing electrophoretic coating means, ultrafiltration means, the baking means, spare tank and other components. The size and shape of the electrophoresis tank tank body to be determined according to the workpiece size, shape and construction technology. To ensure a certain distance between the electrodes under the conditions should be designed to be smaller as possible. Tank with filtration devices and thermostats duster spraying equipment to ensure a certain temperature liquid paint and remove impurities in the circulating liquid paint and bubbles. Fluid mixing device can maintain a uniform paint job, the use of circulating pump, circulating liquid paint 4 to 6 times per hour in general, when the circulation pump into operation, the tank liquid paint surface should be uniform flip. Effect paint management device to supplement adjust paint component, control PH value of the bath, a neutralizing agent and a separator electrode was removed by ultrafiltration unit exclude low molecular weight components and so on. Electrophoresis power supply options, generally use DC power supply. Rectifier device can be silicon rectifier or SCR. Current size and nature of the coatings, temperature, work area, power mode and so on, usually 30 ~ 50A / m2. Washing device for washing before and after the electrophoretic coating workpieces, generally with deionized water, subject to the compression device, commonly used in a rinse nozzle with a spirochete. Baking means for promoting the electrophoretic coating dry film, may be resistance furnace, electric induction furnace and infrared baking equipment. Oven design should preheat, heating and hot three sections, should be developed according to the situation paint variety and the workpiece. Duster spraying equipment, Sino painting equipment (certified), Huantai spraying equipment provided by Qu Sino Painting Equipment Co. Linqu Sino Painting Equipment Co. (www.wfjn.com) (www.wfjn.com) (www.wftcsw.com) is an industry leader in Shandong Weifang, industrial automation control systems and equipment, over the years, the company implementing the scientific management , innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. Sino painting equipment in leadership with the staff warmly welcome all inquiries negotiations to create the painting equipment Sino better future.