Electrophoretic coating is a coating technology in which the painted object is impregnated with water-soluble paint as the anode (anodic electrophoresis) and a cathode corresponding to it is set up, and a direct current is passed between the two poles to make the paint evenly coated on the painted object by the physical and chemical effects of the current.
The process flow of electrophoretic coating on general metal surface is as follows: Pre-cleaning → On-line → Oil removal → Washing → Rust removal → Washing → Neutralization → Washing → Phosphating → Washing → Passivation → Electrophoretic coating → Cleaning on the tank → Ultra-filtration → Drying → Off-line.
Electrophoretic coating generally includes four simultaneous processes.
1,Electrophoresis: Under the action of DC electric field, the positively and negatively charged colloidal particles move in the negative and positive direction, also called swimming.
2,Electrolysis: redox reactions are carried out on the electrodes respectively, instead, oxidation and reduction phenomena are formed on the electrodes.
3, electrodeposition: due to the role of electrophoresis, move to the anode near the charged colloidal particles in the template surface body release electrons, and insoluble state deposition, precipitation phenomenon, at this time the formation of paint film.
4,Electroosmosis: Under the action of electric field, the solid phase does not move, but the liquid phase moves. Electroosmosis makes the water contained in the paint film is gradually discharged to the outside of the film, and finally formed almost even the current can not pass, the water content is very low, the resistance is quite high dense paint film.
5,Iron red epoxy electrophoresis paint for example: the electrophoresis paint system modified epoxy resin, butanol, ethanol amine, talc, iron red substance composition, electrophoresis paint mixed with distilled water, under the action of DC electric field, that is, separated into positively charged cations and negatively charged anions, and a series of complex physical chemical colloid chemistry, electrochemical change process.
The construction speed of electrophoretic coating is fast, and it can realize mechanized and automatic continuous operation, which can reduce labor intensity, uniform paint film, strong adhesion, and even and smooth paint film can be obtained on the parts that are not easy to be coated or not well coated by general coating methods, such as the aforementioned welding seam of the fascia plate.
The utilization rate of paint is as high as 90%-95%, and since electrophoretic paint uses water as solvent, it has the advantages of non-combustibility, non-toxicity and easy operation.
The paint film dried after electrophoresis has excellent adhesion, and its rust resistance, corrosion resistance and weather resistance are better than ordinary paints and general construction methods.
Company Profile
Paint spraying line is to automatically spray the surface of the product to attach their favorite color or decoration to replace the labor force by automatic spraying. The paint spraying line designed and developed by our company has fast spraying speed, uniform spraying, high efficiency, low energy consumption, and can increase the output; the up and down conveying system has developed an auxiliary down automatic leveling device for the difference between long and short materials, and the process is controlled fully automatically.
1. Fast speed, uniform spraying, high efficiency, low energy consumption, high output, 4-5 times of the labor products.
3.Quick color change system can be designed according to customer's requirement, which can greatly save the time of gun washing when changing color and improve the usage rate of equipment.
4. Adopt centralized control, convenient for operation and maintenance.
5. The upper and lower conveying track system is developed for the difference of long material and short material, and the auxiliary lowering automatic leveling device is developed to control the process fully automatically, which makes the lowering easy and comfortable.
6. With years of experience in painting process, the whole painting line is designed to be simple and smooth, with simple operation procedures and quick operation for workers.
7. According to the size and shape of the product, the spray gun angle can be adjusted automatically.
The powder spraying line is suitable for spraying paint and plastic treatment on the surface of the workpiece, and it is used to form the transportation operation with the delivery machinery such as suspension conveyor, electric rail trolley and ground conveyor.
The main components of powder spraying line include: powder spraying system, pretreatment equipment, painting equipment, oven, heat source system, electric control system, suspension conveyor chain, etc. In the process flow is divided into: pre-treatment, powder coating, heating and curing
Automatic powder spraying equipment advantages.
1, the use of automatic powder spraying equipment can not only save labor costs, the most important thing is to significantly improve product quality, and to ensure the stability of product quality, so that the smooth and stable production of large quantities, a complete solution to the lack of enterprise productivity.
2, automatic spraying equipment in the spraying construction process will not produce irritating odor, not only to prevent pollution and damage to the environment, but also will not cause harm to the physical and mental health of the operator of automatic spraying equipment.
3, automatic powder spraying equipment for the first time the utilization rate of powder spraying can reach 70%-80%, the coating thickness can reach 60-150 microns, and its powder coating can also be recycled, so the automatic powder spraying equipment coating utilization rate can reach 90%-98%. A single coating can get a thicker coating.
4,The powder coating of automatic powder coating equipment does not contain solvent,
5,After curing, the powder coating of automatic powder spraying equipment has high plumpness and soft color and because the powder coating does not contain solvent, it is not easy to form pinholes and bubbles when curing. Because powder coating is a solid coating, it will not leak and evaporate during the transportation process.
Certifications
Packaging & Shipping
FAQ
Q1. What is your terms of packing?
A: Generally, we pack our goods by thicker bubble paper, some of them are packed by carton.
Q2. What is your terms of payment?
A: By T/T, 30% as deposit for production, and 70% balance before delivery. We'll show you the photos of the products and packages before you pay the balance.
Q3. What is your terms of delivery?
A: Normally our quotation is under FOB Qingdao, but we also accept EXW, FOB, CFR, CIF, DDU.
Q4. How about your delivery time?
A: Generally, it depends on the projects because it is customized. If your voltage is different from 380V/3PH/50Hz, the delivery time will be longer for custom-made motors or electric components.
Q5. Can you produce according to the technical drawings?
A: Yes, we can produce by your technical drawings or requirements. We can make drawings for you.
Q6: How do you make our business long-term and good relationship?
A1. We keep good quality and competitive price to ensure our customers benefit ;
A2. We respect every customer as our friend and we sincerely do business and make friends with them,
no matter where they come from.
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