Electrophoretic coating is an advanced technology where the object to be painted acts as the anode and is immersed in a water-soluble paint. A corresponding cathode is set up, and direct current is passed between the two poles. This process ensures that the paint is uniformly coated on the object by leveraging both the physical and chemical effects of the electric current.
The standard process flow for electrophoretic coating on metal surfaces includes the following steps: Pre-cleaning → On-line → Oil removal → Washing → Rust removal → Washing → Neutralization → Washing → Phosphating → Washing → Passivation → Electrophoretic coating → Tank cleaning → Ultra-filtration → Drying → Off-line.
The electrophoretic coating process is a sophisticated technique that comprises four concurrent processes.
1. Electrophoresis: Under the influence of a DC electric field, colloidal particles that are positively and negatively charged move towards the negative and positive electrodes, respectively, in a process also known as swimming.
2. Electrolysis: Redox reactions occur at the electrodes, leading to oxidation and reduction phenomena at these points.
3. Electrodeposition: Driven by electrophoresis, charged colloidal particles move towards the anode, release electrons, and deposit in an insoluble state, forming a paint film at the surface of the template.
4. Electroosmosis: In this process, the solid phase remains stationary while the liquid phase moves under the electric field. Electroosmosis helps in gradually expelling water from the paint film, forming a dense, low-water-content paint film that resists electrical currents.
5. Taking iron red epoxy electrophoresis paint as an example: This system comprises modified epoxy resin, butanol, ethanolamine, talc, and iron red substances. When mixed with distilled water and subjected to a DC electric field, the paint separates into positively charged cations and negatively charged anions, undergoing a series of complex physical, chemical, colloidal, and electrochemical changes.
Electrophoretic coating offers rapid construction speeds and enables mechanized, automated continuous operations. This reduces labor intensity and ensures a uniform, strong, and smooth paint film even on parts that are difficult to coat by conventional methods, such as weld seams on fascia plates.
The paint utilization rate in electrophoretic coating is impressively high, ranging from 90% to 95%. Using water as a solvent, electrophoretic paint boasts non-combustibility, non-toxicity, and ease of operation.
The dried paint film after electrophoresis exhibits superior adhesion, rust resistance, corrosion resistance, and weather resistance compared to ordinary paints and conventional construction methods.
Our paint spraying line is a revolutionary solution designed to automatically coat the surface of products with vibrant colors and intricate decorations, eliminating the need for manual labor. Developed by Shandong Bonita Machinery Co. Ltd, this innovative system boasts rapid spraying speed, uniform coverage, exceptional efficiency, and low energy consumption, all contributing to increased output. The advanced up-and-down conveying system features an auxiliary automatic leveling device to accommodate varying material lengths, ensuring a fully automated and seamless process.
1. Enjoy lightning-fast speed, consistent spraying, high efficiency, low energy usage, and impressive output, achieving 4-5 times the productivity of manual labor.
3. Our quick color change system, customizable to meet your specific needs, significantly reduces the time spent washing guns during color changes and enhances equipment utilization.
4. Benefit from centralized control, offering ease of operation and maintenance.
5. The sophisticated upper and lower conveying track system, designed to handle both long and short materials efficiently, includes an auxiliary automatic leveling device, providing fully automated and effortless material handling.
6. Leveraging years of expertise in painting processes, our entire paint line is crafted for simplicity and smooth operation, ensuring user-friendly procedures and swift execution for your workforce.
7. The spray gun angles are automatically adjustable to accommodate various product sizes and shapes, ensuring optimal coverage.
Our advanced powder spraying line is ideal for applying paint and plastic treatments to workpiece surfaces. It seamlessly integrates with delivery machinery like suspension conveyors, electric rail trolleys, and ground conveyors to form an efficient transportation operation.
The core components of our powder spraying line include a powder spraying system, pretreatment equipment, painting apparatus, oven, heat source system, electric control system, and a suspension conveyor chain. The process is structured into distinct phases: pretreatment, powder coating, and heating & curing.
Discover the Advantages of Our Automatic Powder Spraying Equipment:
1. By utilizing automatic powder spraying equipment, you can significantly reduce labor costs while enhancing product quality and ensuring consistent quality across large production volumes, addressing productivity challenges effectively.
2. The automatic spraying equipment operates without producing any irritating odors, preventing environmental pollution and ensuring the safety and well-being of operators.
3. The first-time utilization rate of powder spraying can reach an impressive 70%-80%, with coating thickness ranging from 60-150 microns. Moreover, the powder coating is recyclable, elevating the overall utilization rate to an outstanding 90%-98%, resulting in thicker and more durable coatings.
4. Our automatic powder coating equipment uses powder coatings that are solvent-free.
5. After curing, the powder coating offers high plumpness and soft, vibrant colors. The absence of solvents prevents pinholes and bubbles during curing. Unlike liquid coatings, powder coatings do not leak or evaporate during transportation, ensuring superior durability and appearance.
Q1. What are your packing terms?
A: We ensure the utmost protection for our goods by using high-quality, thicker bubble paper. Some items are further secured in durable cartons to guarantee they reach you in pristine condition.
Q2. What are your payment terms?
A: Our payment terms are 30% deposit via T/T for production initiation and 70% balance before delivery. We will provide you with detailed photos of the products and their packaging before you settle the balance to ensure complete satisfaction.
Q3. What are your delivery terms?
A: Typically, our quotations are based on FOB Qingdao. However, we also cater to other terms including EXW, FOB, CFR, CIF, and DDU to meet your specific needs.
Q4. What about your delivery time?
A: Delivery times are project-dependent due to the customized nature of our products. Custom-made motors or electric components may extend the delivery time, especially if your voltage differs from the standard 380V/3PH/50Hz.
Q5. Can you manufacture according to technical drawings?
A: Absolutely! We can produce based on your technical drawings or specific requirements. Additionally, we offer the service of creating technical drawings for you.
Q6: How do you foster a long-term and beneficial relationship with your clients?
A1. We prioritize excellent quality and competitive pricing to ensure that our clients consistently benefit from our partnership.
A2. We treat every customer as a valued friend, conducting business with integrity and sincerity, regardless of their origin.
We believe in building lasting friendships through our business engagements.
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