Electrophoretic coating is an advanced technology where the object to be painted is submerged in water-soluble paint, acting as the anode (anodic electrophoresis), with a corresponding cathode set up. A direct current passes between these poles, causing the paint to coat the object evenly through the physical and chemical effects of the current. This process ensures a smooth and uniform application of the coating.
The process flow of electrophoretic coating on general metal surfaces is meticulously structured as follows: 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 the highest quality finish.
Electrophoretic coating encompasses four concurrent processes, each contributing to the superior quality of the final coated product.
1. Electrophoresis: Under a DC electric field, colloidal particles, charged either positively or negatively, move towards the opposite pole. This movement, known as swimming, is fundamental to the coating process.
2. Electrolysis: Redox reactions occur at the electrodes, resulting in oxidation and reduction phenomena that are crucial for the coating integrity.
3. Electrodeposition: Due to electrophoresis, charged colloidal particles migrate towards the anode, releasing electrons and depositing in an insoluble state on the template surface, forming a robust paint film.
4. Electroosmosis: The electric field causes the liquid phase to move while the solid phase remains stationary. This process discharges water from the paint film, creating a dense, high-resistance coating that is nearly impermeable to current.
5. Iron Red Epoxy Electrophoresis Paint Example: The electrophoresis paint system includes modified epoxy resin, butanol, ethanolamine, talc, and iron red. When mixed with distilled water and subjected to a DC electric field, it separates into positively charged cations and negatively charged anions, undergoing complex physical, chemical, colloid chemistry, and electrochemical changes.
Electrophoretic coating boasts a rapid construction speed, enabling mechanized and automatic continuous operation. This reduces labor intensity and ensures a uniform, strong adhesion paint film. Unlike other methods, it effectively coats hard-to-reach areas like the welding seams of fascia plates.
With a paint utilization rate of 90%-95%, electrophoretic paint, using water as its solvent, offers non-combustibility, non-toxicity, and ease of operation. It is an eco-friendly and efficient choice.
The dried paint film from electrophoresis exhibits excellent adhesion, with superior rust resistance, corrosion resistance, and weather resistance compared to ordinary paints and conventional construction methods.
Our paint spraying line is engineered to automatically adorn the surface of products with the desired color or decoration, effectively replacing manual labor. The paint spraying line developed by Shandong Bonita Machinery Co. Ltd boasts rapid spraying speeds, uniform application, exceptional efficiency, and reduced energy consumption. These features significantly enhance output. The advanced up-and-down conveying system incorporates an auxiliary auto-leveling device to accommodate materials of varying lengths, ensuring the entire process is seamlessly controlled via automation.
1. Experience unparalleled speed, consistent spray coverage, heightened efficiency, reduced energy usage, and superior output—4-5 times more effective than manual methods.
3. Our quick color change system can be custom-designed to meet specific customer requirements, substantially reducing gun cleaning time during color transitions and boosting equipment utilization rates.
4. Enjoy the ease and convenience of centralized control, simplifying both operation and maintenance.
5. The upper and lower conveying track system is specifically crafted to handle materials of different lengths. This system includes an auxiliary lowering auto-leveling device that fully automates the process, making it effortlessly smooth and comfortable.
6. Leveraging years of expertise in the painting process, our entire paint line is designed for simplicity and fluidity, facilitating straightforward operating procedures and quick worker training.
7. Automatically adjust the spray gun angle according to the product's size and shape, ensuring optimal application every time.
Our powder spraying line is ideal for applying paint and plastic treatments on workpiece surfaces. It integrates seamlessly with various delivery systems such as suspension conveyors, electric rail trolleys, and ground conveyors to streamline transportation operations.
The primary components of our powder spraying line include a powder spraying system, pretreatment equipment, painting equipment, an oven, a heat source system, an electric control system, and a suspension conveyor chain. The process flow comprises pre-treatment, powder coating, and heating and curing stages.
Advantages of Automatic Powder Spraying Equipment
1. Utilizing automatic powder spraying equipment not only cuts labor costs but significantly enhances product quality. It ensures consistent quality, facilitating smooth, stable mass production and completely resolving productivity issues.
2. During the spraying process, automatic equipment emits no irritating odors, safeguarding the environment and the physical and mental health of operators.
3. Automatic powder spraying equipment achieves an initial powder utilization rate of 70%-80%, with coating thicknesses ranging from 60-150 microns. Additionally, the powder coating is recyclable, boosting overall utilization rates to 90%-98%. A single coating application can yield a thicker finish.
4. The powder coating used by automatic powder coating equipment is solvent-free.
5. Following curing, the powder coating exhibits high fullness and soft color. Because it is solvent-free, it minimizes the risk of pinholes and bubbles during curing. Being a solid coating, it is resistant to leakage and evaporation during transportation.
Q1. What is your terms of packing?
A: Typically, we secure our goods with thicker bubble paper to ensure maximum protection. Additionally, some items are carefully packed in sturdy cartons.
Q2. What are your terms of payment?
A: We accept payments via T/T. A 30% deposit is required to commence production, with the remaining 70% due before delivery. Prior to the final payment, we will provide detailed photographs of the products and their packaging.
Q3. What are your terms of delivery?
A: Our quotations are generally based on FOB Qingdao. However, we are flexible and can also accommodate EXW, FOB, CFR, CIF, and DDU terms.
Q4. How about your delivery time?
A: Delivery times are project-specific due to the customized nature of our products. If your required voltage differs from our standard 380V/3PH/50Hz, additional time may be needed for custom-made motors or electric components.
Q5. Can you produce according to technical drawings?
A: Absolutely, we can manufacture products based on your technical drawings or specific requirements. Additionally, we offer drawing services to bring your vision to life.
Q6: How do you ensure long-term and positive business relationships?
A1. By maintaining superior quality and competitive pricing, we ensure our customers reap maximum benefits.
A2. We treat every customer with respect, considering them as friends. We are committed to sincere business practices and value long-lasting friendships,
regardless of their origin.
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