Electrophoretic coating represents a state-of-the-art technology where the object to be painted is immersed in water-soluble paint, acting as the anode in anodic electrophoresis. With a corresponding cathode set in place, a direct current is passed between the two poles. This process ensures that the paint is uniformly applied to the object, leveraging the dynamic interplay of physical and chemical reactions facilitated by the current.
The process flow for electrophoretic coating on metal surfaces is meticulously designed for efficiency and precision: 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 involves four concurrent, highly synchronized processes, each contributing to the impeccable finish and durability of the coated object.
1. Electrophoresis: In a DC electric field, positively and negatively charged colloidal particles migrate toward the opposite poles. This migration, also known as swimming, ensures even distribution of particles.
2. Electrolysis: At the electrodes, redox reactions transpire, resulting in oxidation and reduction phenomena that are crucial for the coating's integrity.
3. Electrodeposition: During electrophoresis, colloidal particles charged with electrons move towards the anode and release their charge upon reaching the template surface. This results in the formation of an insoluble state deposition, culminating in a robust paint film.
4. Electroosmosis: The electric field induces movement in the liquid phase while the solid phase remains stationary. This process expels water from the paint film, culminating in a dense, low-water-content paint film with high resistance, effectively blocking even minor currents.
5. Take iron red epoxy electrophoresis paint as an example: The system employs modified epoxy resin, butanol, ethanolamine, talc, and iron red substances. Mixed with distilled water, this paint, under a DC electric field, dissociates into positively charged cations and negatively charged anions. This initiates a series of intricate physical, chemical, colloidal, and electrochemical changes.
The speed of electrophoretic coating is exceptional, enabling mechanized, automated continuous operations that minimize labor intensity. This results in a uniform, strong adhesive paint film, even on hard-to-coat areas such as the seams of fascia plates, where conventional methods might fail.
With a paint utilization rate soaring between 90%-95%, electrophoretic paint leverages water as a solvent. This endows it with non-combustible, non-toxic properties, making it highly safe and manageable.
Post-electrophoresis, the dried paint film showcases superb adhesion. Its rust, corrosion, and weather resistance surpass that of ordinary paints and traditional application methods, ensuring long-lasting protection and aesthetic appeal.
Our advanced paint spraying line is designed to seamlessly automate the surface coating of products, enabling the application of preferred colors or decorative finishes without manual labor. Created by Shandong Bonita Machinery Co. Ltd, this state-of-the-art system boasts rapid spraying speeds, consistent application, outstanding efficiency, and minimal energy consumption, all contributing to an increased production output. The innovative up-and-down conveying system incorporates an auxiliary automatic leveling device that adeptly manages the variations between long and short materials, ensuring a fully automated, smooth process control.
1. Exceptional speed and uniform spraying ensure high efficiency and low energy consumption, delivering an impressive output that is 4-5 times greater than manual labor.
3. Our quick color change system, customizable to meet client specifications, significantly reduces gun cleaning time during color transitions, thereby enhancing equipment utilization rates.
4. Centralized control systems are integrated for ease of operation and maintenance.
5. The upper and lower conveying track system is meticulously developed to accommodate the variability of material lengths, featuring an auxiliary lowering automatic leveling device for fully automated, smooth, and comfortable lowering processes.
6. Leveraging years of expertise in painting processes, the entire line is designed for simplicity and efficiency, ensuring straightforward operation procedures for quick and easy use by workers.
7. The spray gun angle can be automatically adjusted according to the size and shape of the product for optimal coverage.
Our powder spraying line excels in applying paint and plastic treatments to workpiece surfaces, seamlessly coordinating with delivery systems such as suspension conveyors, electric rail trolleys, and ground conveyors to streamline transportation operations.
Key components of our powder spraying line include the powder spraying system, pretreatment equipment, painting apparatus, ovens, heat source systems, electric control systems, and suspension conveyor chains. The process is systematically divided into pre-treatment, powder coating, heating, and curing stages.
Advantages of Automatic Powder Spraying Equipment
1. Utilizing automatic powder spraying equipment not only reduces labor costs but also significantly enhances product quality and ensures its consistency, facilitating the smooth and stable production of large quantities and resolving any productivity issues.
2. The spraying process with automatic equipment does not emit any irritating odors, preventing environmental pollution and safeguarding the physical and mental well-being of operators.
3. The first-time utilization rate of automatic powder spraying equipment ranges from 70% to 80%, with coating thicknesses between 60-150 microns. Additionally, powder coatings can be recycled, increasing utilization rates to 90%-98%, achieving thicker coatings with a single application.
4. The powder coating used in our automatic powder coating equipment is solvent-free.
5. Once cured, the powder coating has a high degree of plumpness and a soft color. Since it contains no solvents, pinholes and bubbles are minimized during curing. As a solid coating, it resists leakage and evaporation during transport.
Q1. What are your packing terms?
A: Typically, we ensure the utmost protection by packing our goods with thicker bubble paper and, for select items, robust cartons.
Q2. What are your payment terms?
A: We require a 30% deposit via T/T to commence production, with the remaining 70% balance due before delivery. To guarantee your satisfaction, we will provide photos of the products and their packaging prior to the final payment.
Q3. What delivery terms do you offer?
A: While our standard quotation is based on FOB Qingdao, we are flexible and also accommodate EXW, CFR, CIF, DDU terms.
Q4. What is your typical delivery time?
A: Delivery time varies based on the project's specifications. Custom-built motors or electric components, especially those differing from the standard 380V/3PH/50Hz, might extend the lead time.
Q5. Can you manufacture according to technical drawings?
A: Absolutely, we can produce based on your technical drawings or specific requirements. Additionally, we can create custom drawings for you.
Q6: How do you foster long-term business relationships?
A1. We maintain superior quality and competitive pricing to ensure our clients receive maximum value.
A2. We treat every customer with respect, viewing them as friends, and we are committed to conducting sincere business and building lasting friendships,
regardless of their origin.
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