Electrophoretic coating is a cutting-edge technology where the painted object serves as the anode in a water-soluble paint bath, with a corresponding cathode setup. A direct current flows between the two poles, ensuring the paint is uniformly applied to the object through the physical and chemical effects of the current, resulting in an even and durable coat.
The process flow for electrophoretic coating on metal surfaces is meticulously structured: 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. Each step ensures optimal surface preparation and coating application.
Electrophoretic coating involves four simultaneous and crucial processes.
1. Electrophoresis: In a DC electric field, positively and negatively charged colloidal particles move towards their respective opposite poles. This movement, also known as swimming, ensures thorough coating coverage.
2. Electrolysis: Redox reactions occur at the electrodes, leading to the formation of oxidation and reduction phenomena at these points, playing a critical role in the coating process.
3. Electrodeposition: Charged colloidal particles migrate towards the anode under electrophoresis, release electrons at the anode surface, and deposit in an insoluble state, forming a robust paint film.
4. Electroosmosis: In the electric field, the liquid phase moves while the solid phase remains stationary. This process helps expel water from the paint film, resulting in a dense, low-water-content coating that is highly resistant and nearly impermeable to current.
5. For instance, using iron red epoxy electrophoresis paint: The system utilizes modified epoxy resin, butanol, ethanol amine, talc, and iron red substances. When mixed with distilled water and subjected to a DC electric field, it breaks down into charged cations and anions, undergoing complex physical, chemical, colloid chemistry, and electrochemical transformations to form a durable coating.
Electrophoretic coating offers swift construction speeds and enables mechanized, automatic, and continuous operations, thereby reducing labor intensity. It ensures a uniform, smooth, and strongly adhesive paint film, even on hard-to-coat areas like the welding seams of fascia plates.
With a paint utilization rate of 90%-95%, electrophoretic paint is efficient and eco-friendly, utilizing water as a solvent. This provides significant advantages such as non-combustibility, non-toxicity, and ease of operation.
The paint film dried post-electrophoresis boasts superior adhesion, rust resistance, corrosion resistance, and weather resistance, outperforming ordinary paints and conventional construction methods.
Experience a revolution in efficiency and precision with Shandong Bonita Machinery Co. Ltd's Car Spray Painting Line with Upgradable Powder Coating Equipment for Automotive Use. Our cutting-edge paint spraying line automates the surface treatment process, ensuring your products receive the perfect color and finish every time. Engineered for speed, uniformity, and high efficiency, our system boasts low energy consumption and significantly enhances production output. Our advanced up-and-down conveying system features an intelligent automatic leveling device to accommodate variations in material length, all controlled through a fully automated process.
1. Unmatched Efficiency: Achieve unparalleled speed and uniform spraying, resulting in high efficiency and low energy consumption. Our system outputs 4-5 times more than manual labor.
3. Responsive Flexibility: Our quick color change system, tailored to customer needs, drastically reduces the time required for gun washing during color transitions, enhancing equipment utilization rates.
4. User-Friendly Control: The centralized control system simplifies operation and maintenance, making it convenient and efficient for users.
5. Intelligent Conveying: Designed to handle both long and short materials, our upper and lower conveying track system features an auxiliary automatic leveling device for effortless and precise lowering, fully automated for ease and comfort.
6. Streamlined Design: Leveraging years of expertise in painting processes, our painting line offers a simple, smooth design with straightforward operation procedures, enabling quick and easy use for workers.
7. Adaptive Precision: Automatically adjust the spray gun angle to match the size and shape of the product, ensuring optimal application every time.
Our powder spraying line is designed for versatile applications, suitable for paint and plastic treatments on workpiece surfaces. It seamlessly integrates with delivery systems such as suspension conveyors, electric rail trolleys, and ground conveyors to form a comprehensive transportation operation.
The powder spraying line comprises several key components: powder spraying system, pretreatment equipment, painting equipment, oven, heat source system, electric control system, and suspension conveyor chain. The process flow includes pre-treatment, powder coating, and heating and curing stages.
Advantages of Automatic Powder Spraying Equipment
1. Enhanced Quality and Productivity: Automatic powder spraying equipment not only reduces labor costs but also significantly improves product quality and ensures stability. This enables smooth and consistent high-volume production, effectively addressing productivity challenges.
2. Environmental and Health Benefits: Our automatic spraying equipment operates without emitting irritating odors, thus preventing environmental pollution and safeguarding the health and well-being of operators.
3. Exceptional Efficiency: With an initial powder spraying utilization rate of 70%-80% and a coating thickness of 60-150 microns, our equipment ensures high efficiency. Its recyclable powder coating further boosts utilization rates to 90%-98%, achieving a thicker coating with a single application.
4. Solvent-Free Coating: Our automatic powder coating equipment uses powder coatings that contain no solvents.
5. Superior Finish: After curing, the powder coating exhibits high plumpness and vibrant color. Absence of solvents prevents pinholes and bubbles during curing. As a solid coating, it maintains stability during transportation, avoiding leaks and evaporation.
Q1. What are your terms of packing?
A: Typically, we ensure the safety of our goods by using thicker bubble wrap for most items, while some are securely packed in cartons.
Q2. What are your terms of payment?
A: We accept payment via T/T, with 30% required as a deposit for production and the remaining 70% balance due before delivery. Prior to the balance payment, we will provide you with photos of the products and packaging.
Q3. What are your terms of delivery?
A: Our quotations are generally based on FOB Qingdao, but we also accommodate EXW, FOB, CFR, CIF, and DDU terms.
Q4. What is your delivery time?
A: The delivery time primarily depends on the project's customization requirements. Please note that if your voltage specification differs from 380V/3PH/50Hz, the delivery time may extend to accommodate custom-made motors or electrical components.
Q5. Can you manufacture according to the technical drawings?
A: Absolutely, we can produce products based on your technical drawings or specific requirements. Additionally, we offer drawing services for your convenience.
Q6: How do you foster long-term and positive business relationships?
A1. We maintain high-quality standards and competitive pricing to ensure our clients benefit from our services.
A2. We treat every customer with the utmost respect, considering them as friends, and we engage in sincere business practices to nurture lasting friendships, regardless of their origin.
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