Electrophoretic coating is a pioneering technology where the object to be painted is immersed in a water-soluble paint bath as the anode (anodic electrophoresis). A corresponding cathode is established, and direct current is passed between these two poles. This process ensures the paint is uniformly applied to the object through the intricate interplay of physical and chemical effects driven by the current.
The meticulous process flow of electrophoretic coating on general metal surfaces includes several stages: 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 is a complex process that encompasses four simultaneous and interdependent stages.
1. Electrophoresis: Under the influence of a DC electric field, positively and negatively charged colloidal particles migrate towards the negative and positive electrodes respectively, a movement often referred to as swimming.
2. Electrolysis: Redox reactions occur at the electrodes, leading to oxidation at one electrode and reduction at the other, generating unique electrochemical phenomena.
3. Electrodeposition: Driven by electrophoresis, charged colloidal particles move towards the anode. Upon reaching the template surface, these particles release electrons, leading to insoluble state deposition and precipitation, which results in the formation of a robust paint film.
4. Electroosmosis: In the presence of an electric field, while the solid phase remains stationary, the liquid phase moves. Electroosmosis gradually expels water from the paint film, eventually creating a dense, water-deficient film with high resistance, nearly impassable by current.
5. For instance, in iron red epoxy electrophoresis paint, the system incorporates modified epoxy resin, butanol, ethanol amine, talc, and iron red compounds. When mixed with distilled water and subjected to a DC electric field, it separates into positively charged cations and negatively charged anions, undergoing a series of intricate physical, chemical, colloidal, and electrochemical transformations.
The electrophoretic coating process boasts a remarkable construction speed and lends itself to mechanized and automated continuous operation. This reduces labor intensity and ensures a uniform paint film with strong adhesion. Even the most challenging areas, such as the welding seams of fascia plates, receive an even and smooth coating.
With a paint utilization rate as high as 90%-95%, electrophoretic paint is highly efficient. Utilizing water as a solvent, it offers non-flammability, non-toxicity, and ease of operation—attributes that enhance safety and user-friendliness.
The paint film, once dried post-electrophoresis, exhibits exceptional adhesion. Its rust resistance, corrosion resistance, and weather resistance far surpass ordinary paints and traditional construction methods, ensuring long-lasting protection and durability.
Our state-of-the-art paint spraying line revolutionizes product finishing by automatically applying your desired color or decoration, replacing manual labor with precision automatic spraying. Developed by Shandong Bonita Machinery Co. Ltd, this innovative system boasts rapid spraying speeds, uniform application, and exceptional efficiency. It minimizes energy consumption while maximizing output. The up-and-down conveying system is equipped with an advanced auxiliary automatic leveling device to accommodate varying material lengths, ensuring seamless, fully automated process control.
1. Experience unparalleled speed, uniform spraying, and high efficiency with our system. It consumes less energy, delivers higher output, and performs 4-5 times better than manual labor.
3. Our quick color change system, customizable to your requirements, drastically reduces gun washing time during color changes and enhances equipment utilization efficiency.
4. Featuring centralized control, our system offers unparalleled convenience for both operation and maintenance.
5. Designed for the automatic handling of materials of varying lengths, the up-and-down conveying track system includes an advanced auxiliary lowering device for effortless and fully automatic leveling, making the entire process smooth and comfortable.
6. Leveraging years of expertise in painting processes, our complete painting line is designed for simplicity and efficiency, offering straightforward operation and quick adaptability for workers.
7. The spray gun angle can be automatically adjusted to accommodate different product sizes and shapes, ensuring optimal spraying results.
Our powder spraying line excels in applying paint and plastic coatings to workpieces, integrating seamlessly with suspension conveyors, electric rail trolleys, and ground conveyors for efficient transportation operations.
Key components of our powder spraying line include a powder spraying system, pretreatment equipment, painting equipment, ovens, heat source systems, electric control systems, and a suspension conveyor chain. The process comprises pre-treatment, powder coating, and heating & curing stages.
Advantages of Automatic Powder Spraying Equipment
1. Automatic powder spraying equipment not only slashes labor costs but significantly enhances product quality and consistency, facilitating stable, large-scale production and addressing productivity challenges.
2. During spraying, our automatic equipment emits no unpleasant odors, preventing environmental pollution and safeguarding the physical and mental health of operators.
3. The utilization rate of powder spraying reaches 70%-80% on the first application, achieving coating thicknesses of 60-150 microns. With recyclable powder coating, overall utilization skyrockets to 90%-98%, enabling single-coat applications to achieve substantial thickness.
4. Our automatic powder coating equipment uses solvent-free powder coatings,
5. Post-curing, the powder coating offers high gloss and vibrant color. Being solvent-free, it minimizes pinholes and bubbles during curing. As a solid coating, it avoids leakage and evaporation during transport.
Q1. What are your terms of packing?
A: We generally pack our goods using thicker bubble paper to ensure maximum protection. Some items are further secured with durable cartons for added safety.
Q2. What are your terms of payment?
A: Our payment terms are flexible. We require a deposit of 30% via T/T to initiate production, with the remaining 70% due before delivery. Rest assured, we will provide you with photos of the products and their packaging before you make the final payment.
Q3. What are your terms of delivery?
A: Typically, our quotations are based on FOB Qingdao. However, we are also capable of accommodating various delivery terms including EXW, FOB, CFR, CIF, and DDU to suit your preferences.
Q4. What is your estimated delivery time?
A: Our delivery time primarily depends on the specific project requirements, as our products are customized. For instance, if your voltage needs differ from the standard 380V/3PH/50Hz, additional time will be required to source custom-made motors or electrical components.
Q5. Can you manufacture according to technical drawings?
A: Absolutely, we can produce according to your technical drawings or specific requirements. Additionally, we can assist by creating detailed drawings for your approval.
Q6: How do you ensure a long-term, successful partnership?
A1. By maintaining high-quality standards and offering competitive prices, we ensure our customers receive maximum value.
A2. We value each customer as a friend, fostering sincere business relationships and friendships regardless of their location.
No matter where they come from.
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