Important Process Parameters Affecting Industrial Aluminum Electrophoresis Paint-WJW Aluminum Supplier Aluminum

Electro-Coating (Electro-Coating) is a coating method that uses an external electric field to make the pigment with particles and resin such as resin and other particles of the electrode. Important process parameters affecting electrophoretic paint 1. Voltage electrophoresis coating adopts a fixed voltage method. The equipment is absolutely simple and easy to control. The voltage has a great impact on the paint film; the higher the voltage, the thicker the electro -swimming paint film. It can be improved accordingly to the difficult parts of painting, shortening the construction time. 2. Electricity time The thickness of the paint film increases with the extension of the electrophoretic time, but when the paint film reaches a certain thickness, the time continuously extends the thickness, but it will exacerbate the side effect. Thin. Electricity time should be based on the voltage used to ensure the quality of the coating, the shorter the better. Individual workpieces are 1 to 3 minutes, and large workpieces are 3 to 4 minutes. If the name of the coated object is complicated, the voltage can be appropriately improved and the time is extended. 3. The temperature of the coating temperature is high and the film formation rate is fast, but the appearance of the paint film is rough, which will also cause the coating to deteriorate; the temperature is low, the electricity sinks is small, the film formation is slow, the coating film is thin and densely densely densely densely densely densely densely dense. During the construction process, because the local power energy transformed into thermal energy during the electrical deposition, the mechanical friction in the reincarnation system generates heat, which will cause the coating temperature to rise. The temperature of individual lacquer liquid controls at 15-30 in some aspects. 4. The solids of the coating and the solid of the electrophoretic coatings commercially available in Yanji are about 50%. During construction, the coating solid is used to hold the coating solid at 10%to 15%. The solid content is too low, the covering force of the paint film is not good, the pigment is easy to accumulate, and the firmness of the paint is poor. If the solid is too high and the viscosity is advanced, the paint film will be rough and fluffy, and the adhesion is poor. Individual facial ratio is about 1 to 2, and the facial ratio of high gloss electrical coatings can hold 1 to 4. Because in actual operation, the amount of paint of the coating will gradually land, and the coatings with high pigments must be increased at any time to adjust. 5. The pH value of the pH value of the coating directly affects the firmness of the slot. If the pH value is too high, the newly deposited coating film will be dissolved again, the paint film becomes thinner, and it will be removed after the electro -swimming. The pH value is too low, the nominal luster of the workpiece is inconsistent, the firmness of the lacquer liquid is not good, the dissolved resin will be precipitated, the lacquer film is rough, and the adhesion will land. 6. The coating resistance is caused by the impurities ion of the electric tank into the previous process from the previous process, which causes the coating resistance value to the landing resistance value, which causes the paint film to appear roughly rough and the disadvantages such as pinhole and other illnesses. In the coating construction, the paint is required to be durated. In order to obtain high -quality coating films, cathode hood equipment can be taken to eliminate ammonium and calcium, magnesium and other impurities positive ions. 7. The interval between the workpiece from the cathode is close to the interval between the cathode and the deposition effect is high. However, too close the interval will cause the paint film to be too thick and cause disadvantages such as flowing, orange peel, etc. The individual interval is not less than 20cm. For large -scale and complicated workpieces, when the outside has a thick coating film, and the internal coating film is still thin, it should increase the cathode at a long distance to help the cathode pole.