Electrophoretic coating is a revolutionary coating technology where the object to be painted is immersed in water-soluble paint as the anode (anodic electrophoresis) with a corresponding cathode. By applying direct current between the two poles, paint is uniformly applied to the object through the physical and chemical effects of the current.
The detailed process flow for electrophoretic coating on general metal surfaces includes: 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 encompasses four key simultaneous processes.
1. Electrophoresis: Under the influence of a DC electric field, positively and negatively charged colloidal particles migrate in opposite directions, a process also known as swimming.
2. Electrolysis: Redox reactions occur at the electrodes, producing oxidation and reduction phenomena respectively.
3. Electrodeposition: Due to electrophoresis, charged colloidal particles move towards the anode, releasing electrons and depositing in an insoluble state, thus forming a paint film.
4. Electroosmosis: In the presence of an electric field, the solid phase remains stationary while the liquid phase moves. Electroosmosis causes the water in the paint film to gradually be expelled, resulting in a dense paint film with high resistance and low water content.
5. For example, consider iron red epoxy electrophoresis paint: An electrophoresis paint system composed of modified epoxy resin, butanol, ethanol amine, talc, and iron red substances is mixed with distilled water. Under a DC electric field, it separates into positively charged cations and negatively charged anions, undergoing a complex series of physical, chemical, and electrochemical changes.
Electrophoretic coating offers rapid construction speed and the potential for mechanized and automated continuous operations, reducing labor intensity. This method ensures uniform paint films with strong adhesion, even on parts difficult to coat by other methods, like welding seams on fascia plates.
The paint utilization rate is impressively high, ranging from 90% to 95%. Since electrophoretic paint uses water as a solvent, it boasts advantages such as non-combustibility, non-toxicity, and ease of operation.
Paint films dried post-electrophoresis exhibit excellent adhesion, with superior rust resistance, corrosion resistance, and weather resistance compared to ordinary paints and conventional methods.
Our paint spraying line automatically applies the desired color or decoration to product surfaces, minimizing manual labor. Designed with speed, uniformity, and efficiency in mind, it features high efficiency, low energy consumption, and increased output. The up and down conveying system includes an automatic leveling device for differing material lengths, ensuring fully automatic process control.
1. High-speed, uniform spraying with exceptional efficiency, low energy consumption, and a high output, delivering productivity 4-5 times greater than manual methods.
3. A quick color change system, customizable according to customer requirements, significantly reduces gun washing time when changing colors, enhancing equipment utilization.
4. Centralized control for convenient operation and maintenance.
5. The upper and lower conveying track system is developed to accommodate varying material lengths, featuring an auxiliary automatic leveling device for effortless and fully automated control, ensuring smooth lowering.
6. With years of expertise in the painting process, our entire painting line is designed for simplicity and smoothness. It features straightforward operation procedures and rapid functionality, ensuring quick and efficient workflow for workers.
7. Our spray gun angle automatically adjusts according to the product's size and shape, providing precision and versatility for optimal coating.
Our powder spraying line is perfect for applying paint and plastic treatments on workpiece surfaces. It integrates seamlessly with delivery machinery such as suspension conveyors, electric rail trolleys, and ground conveyors for efficient transportation operations.
The primary components of our powder spraying line include: powder spraying system, pretreatment equipment, painting equipment, oven, heat source system, electric control system, and suspension conveyor chain. The process flow is meticulously divided into stages: pretreatment, powder coating, heating, and curing.
Advantages of our Automatic Powder Spraying Equipment.
1. Utilizing automatic powder spraying equipment not only reduces labor costs but also significantly enhances product quality. It ensures consistent and stable production for large quantities, effectively addressing productivity challenges.
2. Our automatic spraying equipment eliminates irritating odors during the spraying process, preventing environmental pollution and protecting the physical and mental health of operators.
3. The initial utilization rate of powder spraying with our automatic equipment can reach 70%-80%, with a coating thickness of 60-150 microns. Additionally, the powder coating is recyclable, leading to an overall utilization rate of 90%-98%. A single application can achieve a thicker coating.
4. The powder coating used in our automatic powder coating equipment is solvent-free, ensuring a more environmentally friendly solution.
5. After curing, the powder coating displays high plumpness and a soft, vibrant color. Because it is solvent-free, it minimizes the formation of pinholes and bubbles during curing. As a solid coating, it avoids leakage and evaporation during transportation.
Q1. What is your standard for packing?
A: Typically, we meticulously wrap our goods with thicker bubble paper to ensure maximum protection. Some items are also securely packed in cartons for added safety.
Q2. What are your payment terms?
A: We accept payments by T/T. A 30% deposit is required to begin production, with the remaining 70% balance due before delivery. We will provide detailed photos of the products and their packaging before you make the final payment.
Q3. What delivery terms do you offer?
A: Our standard quotation is based on FOB Qingdao. However, we are flexible and can accommodate other terms such as EXW, FOB, CFR, CIF, and DDU to suit your needs.
Q4. What is your typical delivery time?
A: Delivery time varies depending on the specifics of each project, as all orders are customized. If your required voltage differs from 380V/3PH/50Hz, additional time will be needed to source custom-made motors or electric components.
Q5. Are you able to manufacture products based on technical drawings?
A: Absolutely. We can manufacture products based on your technical drawings or specific requirements, and we can also create detailed drawings for you.
Q6: How do you ensure a long-term and positive relationship with your clients?
A1. We maintain high-quality standards and competitive pricing to maximize our customers' benefits.
A2. We treat every customer as a valued friend. We conduct business with sincerity and build genuine friendships, regardless of where our clients are from.
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