Electrophoretic coating is a cutting-edge technology where an object is immersed in water-soluble paint as the anode (anodic electrophoresis) while a cathode is set up opposite to it. A direct current flows between these poles, ensuring the paint evenly coats the object through the physical and chemical interplay of the current.
The process flow of electrophoretic coating on general metal surfaces follows these steps: Pre-cleaning → On-line → Oil removal → Washing → Rust removal → Washing → Neutralization → Washing → Phosphating → Washing → Passivation → Electrophoretic coating → Cleaning in the tank → Ultra-filtration → Drying → Off-line.
Electrophoretic coating encompasses four concurrent processes.
1. Electrophoresis: Under the DC electric field, charged colloidal particles migrate towards oppositely charged electrodes, a phenomenon also known as swimming.
2. Electrolysis: Redox reactions occur at the electrodes, forming oxidation and reduction phenomena.
3. Electrodeposition: Charged colloidal particles migrate near the anode, release electrons, and form an insoluble paint film on the surface through deposition and precipitation.
4. Electroosmosis: Under an electric field, the liquid phase moves while the solid phase remains stationary. Electroosmosis gradually expels water from the paint film, creating a dense, high-resistance paint film with minimal water content.
5. For example, iron red epoxy electrophoresis paint involves a system with modified epoxy resin, butanol, ethanol amine, talc, and iron red substances. Mixed with distilled water, this system undergoes a series of complex physical, chemical, colloid chemistry, and electrochemical changes under a DC electric field, resulting in positively charged cations and negatively charged anions.
The construction speed of electrophoretic coating is rapid, enabling automated continuous operation. This reduces labor intensity while providing a uniform, smooth paint film with strong adhesion, even on hard-to-coat areas like fascia plate weld seams.
The paint utilization rate reaches an impressive 90%-95%. Using water as a solvent, electrophoretic paint offers the benefits of being non-flammable, non-toxic, and easy to handle.
The dried electrophoretic paint film boasts superior adhesion, along with enhanced rust resistance, corrosion resistance, and weather resistance compared to ordinary paints and conventional methods.
Our automated paint spraying line delivers speedy and uniform surface coating applications, allowing for customized colors and decorations. Designed and developed by Shandong Bonita Machinery Co. Ltd, it features fast spraying speeds, high efficiency, low energy consumption, and increased output. The sophisticated up-and-down conveying system includes an auxiliary automatic leveling device for long and short materials, with fully automated process control.
1. Speedy and uniform spraying with high efficiency, low energy consumption, and increased output—up to 4-5 times more than manual processes.
3. A quick color change system can be designed per customer specifications, significantly reducing gun washing time and enhancing equipment utilization.
4. Features centralized control for easy operation and maintenance.
5. The upper and lower conveying track system addresses long and short material differences, with an auxiliary lowering automatic leveling device for fully automated, easy, and comfortable process control.
6. With years of expertise in the painting process, our painting line is meticulously designed for simplicity and fluidity. Featuring straightforward operation procedures, it ensures swift and efficient workflow for the operators.
7. Tailored to the size and shape of your products, the spray gun angle on our equipment can be adjusted automatically, providing precise and consistent coating coverage.
Our powder spraying line is adept at applying paint and plastic treatments on workpiece surfaces. It seamlessly integrates with various delivery mechanisms such as suspension conveyors, electric rail trolleys, and ground conveyors, forming a cohesive transportation operation.
The core components of our powder spraying line include: a state-of-the-art powder spraying system, comprehensive pretreatment equipment, advanced painting apparatus, efficient ovens, reliable heat source systems, sophisticated electric control systems, and durable suspension conveyor chains. The process flow encompasses: pretreatment, powder coating, heating, and curing stages.
Advantages of Automatic Powder Spraying Equipment
1. Utilizing automatic powder spraying equipment not only slashes labor costs but, more importantly, elevates product quality significantly. It ensures consistent quality stability, facilitating the smooth and reliable production of large volumes, thereby addressing productivity challenges comprehensively.
2. During the spraying process, our automatic equipment does not emit any irritating odors, thus preventing environmental pollution and safeguarding the health and well-being of operators, both physically and mentally.
3. Our automatic powder spraying equipment boasts an initial powder utilization rate of 70%-80%. With coating thickness ranging from 60-150 microns and the capability to recycle powder, the overall coating utilization rate can reach an impressive 90%-98%. This allows for a thicker, more durable coating with a single application.
4. The powder coating applied by our automatic powder coating equipment is completely solvent-free,
5. Once cured, the powder coating features high plumpness and a soft, vibrant color. The absence of solvent in the coating prevents the formation of pinholes and bubbles during curing. Furthermore, as a solid coating, it eliminates risks of leakage and evaporation during transportation.
Q1. What are your packing terms?
A: We generally protect our goods with thicker bubble paper, and some items are securely packed in cartons.
Q2. What are your payment terms?
A: We accept payment via T/T, with 30% due as a production deposit and the remaining 70% balance to be paid before delivery. Prior to payment of the balance, we will provide you with photos of the products and their packaging.
Q3. What are your delivery terms?
A: Our standard quote is based on FOB Qingdao terms, but we are also flexible and can accommodate EXW, FOB, CFR, CIF, and DDU terms.
Q4. What is your delivery timeline?
A: Our delivery time varies depending on the specific project, as our equipment is customized. If your required voltage differs from 380V/3PH/50Hz, the delivery time may extend due to the need for custom-made motors or electrical components.
Q5. Can you manufacture based on technical drawings?
A: Absolutely, we can produce according to your technical drawings or specific requirements. Additionally, we can create drawings for you if needed.
Q6: How do you ensure a long-term and positive business relationship?
A1. We maintain high quality standards and competitive pricing to ensure our customers benefit.
A2. We treat every customer with respect, considering them as friends, and are dedicated to sincere business practices and building lasting friendships,
regardless of their geographic location.
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