Coating process: technical principle and process flow of steel formwork electrophoretic coating

Key tips: 1 Basic principle of steel formwork electrophoretic coating The so-called electrophoretic coating is a kind of coating technology that the coating (steel template) is immersed in the water-soluble coating as the anode (anode electrophoresis), another cathode corresponding to it is set up, and the direct current is applied between the two poles, and the physical and chemical effects generated by the current make the coating evenly applied on the coating Electrophoretic paint must be used for electrophoretic coating, which is also called water-soluble paint The electrophoretic paint and distilled water must be diluted in a certain proportion before use Electrophoretic coating generally includes four simultaneous processes: 1 Electrophoresis: under the action of DC electric field, Application scope and advantages of roller ceramic coating Recommended introduction: the surface of ceramic rubber plate used for roller ceramic coating is cast into durable rubber plate by hundreds of independent small ceramic pieces Each ceramic piece has raised characteristics Under general conveyor belt pressure, thousands of unique cast bumps can produce positive traction, prevent slipping and extend the service life of conveyor belt roller At the same time, the bottom layer adopts high-quality rubber, which has strong elasticity and can play a good impact resistance role The scope of application of roller ceramic coating is one three six 83857180 (the same as V) 1 Roller coating in extremely harsh working environment 2 The belt joint is not suitable for fixing with iron buckle; 3 It is suitable for leather Coating home news: first, the basic principle of steel template electrophoretic coating is so-called electrophoretic coating, which is a coating technology that the coating (steel template) is immersed in the water-soluble coating as an anode (anode electrophoretic), another cathode corresponding to it is set up, and the direct current is applied between the two poles, and the physical and chemical effects generated by the current make the coating evenly applied on the coating Electrophoretic paint must be used for electrophoretic coating, which is also called water-soluble paint The electrophoretic paint and distilled water must be diluted in a certain proportion before use Electrophoretic coating generally includes four simultaneous processes: 1 Electrophoresis: under the action of DC electric field, positive and negative charged colloidal particles move towards negative and positive directions, also known as swimming 2 Electrolysis: the oxidation-reduction reaction is carried out on the electrode, but the oxidation-reduction phenomenon is formed on the electrode 3 Electrodeposition: due to the electrophoretic effect, the charged colloidal particles moved near the anode release electrons in the body of the template and precipitate in an insoluble state At this time, the paint film is formed 4 Electroosmosis: under the action of electric field, the solid phase does not move, but the liquid phase moves Electroosmosis makes the moisture in the film gradually discharged to the outside of the film, and finally forms a compact film with very low moisture content and high resistance, which can hardly pass the current 5 Iron red epoxy electrophoretic paint as an example: This electrophoretic paint is composed of modified epoxy resin, butanol, ethanolamine, talcum powder and iron red After the electrophoretic paint is mixed with distilled water, it can be separated into cation with positive charge and anion with negative charge under the action of direct current electric field, and a series of complex physicochemical colloidal chemistry and electrochemical change processes are carried out 2、 Process 1 Steel template electrophoretic coating process: degreasing and derusting → water flushing → water washing → drying → electrophoretic knee lifting → water flushing → drying → trademark spraying → packaging → leaving the factory 2 Description of process: degreasing and derusting: two in one method, i.e one step of degreasing and derusting, prepared by the solution factory Water washing: the purpose is to remove the acid and alkali residues on the surface of the template When washing, it is best to use constant water Electrophoretic painting: This is the purpose and core of the process The current, voltage, solid content, pH value, electrophoresis temperature and speed in the electrophoresis tank, as well as the correct use of the additional equipment of the electrophoresis tank, are the key to the success of electrophoresis painting Drying: steel formwork must be dried after electrophoretic coating The working temperature of drying oven is 160-180 ℃, and the baking time is 30min The construction speed of electrophoretic coating is fast, it can realize mechanized and automatic continuous operation, reduce labor intensity, uniform paint film, strong adhesion, and even, flat and smooth paint film can be obtained for the parts that are not easy to be coated or not well coated by the general coating method, such as the reinforced plate weld and other places mentioned above The utilization rate of the coating is as high as 90% - 95% Because the electrophoretic coating uses water as the solvent, it has the advantages of non flammability, non toxicity and convenient operation After electrophoresis, the dried paint film has excellent adhesion, and its rust resistance, corrosion resistance, weather resistance and other properties are superior to ordinary paint and general construction methods Home of coatings is specialized in coatings, diatom mud, paint coating, coating technology, fire retardant coating news and coating, diatom mud, paint coating, coating technology, fire retardant coating decoration knowledge and decoration renderings,