Description
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 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.
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.
Loading | Hang workpiece |
Pre-treatment | Degreasing, water rinsing, phosphating, water rinsing |
| To dry workpiece after pre-treatment |
Powder coating booth | Powder coating using reciprocator and powder coating gun |
Powder curing oven | To bake workpiece |
Loading | After workpiece cool, then loading |
Detailed Photos
Company Profile
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.
Complaint
