Electrophoretic coating represents a sophisticated coating technology where the object to be painted is immersed in a water-soluble paint solution as the anode (anodic electrophoresis), with a corresponding cathode established. By applying a direct current between these two poles, the paint is uniformly distributed over the object's surface, thanks to the physical and chemical effects induced by the current.
The intricate process flow for electrophoretic coating on general metal surfaces includes a series of meticulously planned steps: 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 typically encompasses four concurrent processes, each playing a crucial role.
1. Electrophoresis: In the presence of a DC electric field, the colloidal particles, which are either positively or negatively charged, migrate towards the opposite charge pole, a phenomenon often referred to as swimming.
2. Electrolysis: Oxidation and reduction reactions occur at the respective electrodes, leading to distinct oxidation and reduction phenomena on these electrodes.
3. Electrodeposition: Due to electrophoresis, charged colloidal particles move towards the anode surface, release electrons, and deposit in an insoluble state, forming a paint film through precipitation.
4. Electroosmosis: Within an electric field, while the solid phase remains stationary, the liquid phase moves, causing water within the paint film to gradually discharge to the film's exterior. This results in a highly dense paint film with minimal water content and extremely high resistance, impervious to current passage.
5. For instance, iron red epoxy electrophoresis paint consists of a modified epoxy resin system, including components like butanol, ethanol amine, talc, and iron red substances. When mixed with distilled water and subjected to a DC electric field, these components undergo complex physical, chemical, colloidal, and electrochemical changes, resulting in the separation into positively and negatively charged ions.
The construction speed of electrophoretic coating is impressively fast, enabling mechanized, automated continuous operations. This process significantly reduces labor intensity while ensuring a uniform paint film with strong adhesion. Even on parts that are difficult to coat using traditional methods, such as the welding seams of fascia plates, a smooth, even coating can be achieved.
The paint utilization rate for electrophoretic coating is remarkably high, ranging between 90% and 95%. Furthermore, since electrophoretic paint uses water as a solvent, it boasts non-combustibility, non-toxicity, and ease of operation.
The dried paint film resulting from electrophoresis exhibits exceptional adhesion. Its resistance to rust, corrosion, and adverse weather conditions surpasses that of ordinary paints and traditional construction methods.
Our paint spraying line revolutionizes the surface finishing process, enabling automatic application of vibrant colors or decorative coatings with unparalleled precision. Shandong Bonita Machinery Co. Ltd's state-of-the-art paint spraying line offers rapid spraying speeds, uniform application, and exceptional efficiency. It minimizes energy consumption while maximizing output. Our innovative up-and-down conveying system features an auxiliary automatic leveling device that effortlessly handles varying material lengths, ensuring a fully automated and seamless process.
1. Experience incredible speed, perfectly uniform spraying, and unmatched efficiency with our line, which consumes less energy while boosting output to 4-5 times that of manual labor.
3. Our quick color change system, designed to meet customer specifications, drastically reduces gun washing time during color transitions and enhances equipment utilization.
4. Centralized control systems make operation and maintenance remarkably convenient.
5. Our advanced upper and lower conveying tracks are tailored for both long and short materials. The auxiliary lowering automatic leveling device ensures a fully automated, smooth, and comfortable lowering process.
6. Leveraging years of expertise, our painting line boasts a streamlined design with simple, efficient operational procedures for swift worker training and execution.
7. The spray gun angle can be automatically adjusted based on the product’s size and shape, ensuring optimal coverage.
Our powder spraying line excels in applying both paint and plastic coatings to workpiece surfaces. It integrates seamlessly with suspension conveyors, electric rail trolleys, and ground conveyors to facilitate continuous transportation operations.
The core components of our powder spraying line include a powder spraying system, pretreatment equipment, painting equipment, ovens, heat source systems, electric control systems, and suspension conveyor chains. The process flow encompasses pretreatment, powder coating, and heating/curing stages.
Advantages of Automatic Powder Spraying Equipment
1. Utilizing automatic powder spraying equipment not only slashes labor costs but also significantly enhances product quality and consistency. This ensures smooth, stable, and high-volume production, effectively addressing productivity challenges.
2. Automatic spraying equipment operates odor-free, preventing environmental pollution and safeguarding the health of operators.
3. Our equipment boasts a first-time powder utilization rate of 70%-80%, with coating thicknesses ranging from 60-150 microns. Recyclable powder increases overall utilization to 90%-98%, achieving thicker single-coat applications.
4. The powder coatings used in our automatic equipment are solvent-free, promoting a safer and more environmentally friendly application process.
5. After curing, the coatings exhibit high fullness and soft color without forming pinholes or bubbles. As a solid coating, it avoids leakage and evaporation during transport, ensuring quality and efficiency.
Q1. What are your terms of packing?
A: Typically, we ensure the utmost protection for our products by using thicker bubble paper. For some items, we also use durable cartons to further safeguard the goods.
Q2. What are your terms of payment?
A: Our payment terms are straightforward. We require a 30% deposit via T/T to commence production, with the remaining 70% payable before delivery. Prior to the final payment, we will provide detailed photos of the products and their packaging for your review.
Q3. What are your terms of delivery?
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 based on your preferences.
Q4. What is your delivery time?
A: Delivery times vary depending on the specifics of each project, especially since our equipment is customized. If your required voltage differs from 380V/3PH/50Hz, please note that additional time may be required for sourcing custom-made motors or electrical components.
Q5. Can you manufacture according to technical drawings?
A: Absolutely, we can produce items based on your technical drawings or specific requirements. Additionally, we offer drafting services to create detailed drawings for your approval.
Q6: How do you ensure long-term and strong relationships with your clients?
A1. Our commitment to exceptional quality and competitive pricing ensures that our customers consistently benefit from choosing us.
A2. We value and respect every customer as our friend. We conduct business with sincerity and aim to build lasting friendships, regardless of where our customers are from.
no matter where they come from.
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