Electrophoretic coating is a cutting-edge technology where the painted object is immersed in water-soluble paint acting as the anode (anodic electrophoresis), while a corresponding cathode is set up. By passing a direct current between these poles, the paint is evenly applied to the object due to the physical and chemical effects of the current.
The electrophoretic coating process for general metal surfaces follows this streamlined flow: 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 comprises four synchronized processes.
1. Electrophoresis: Colloidal particles charged either positively or negatively move towards the opposite pole under a DC electric field, also known as swimming.
2. Electrolysis: Redox reactions occur at the electrodes, resulting in oxidation and reduction phenomena.
3. Electrodeposition: Driven by electrophoresis, charged colloidal particles near the anode release electrons, leading to insoluble state deposition and the formation of a paint film.
4. Electroosmosis: Under an electric field, the liquid phase moves while the solid phase remains stationary. This process gradually expels water from the paint film, resulting in a dense, resistant film with minimal water content.
5. For instance, iron red epoxy electrophoresis paint involves a system of modified epoxy resin, butanol, ethanol amine, talc, and iron red substances. When mixed with distilled water and subjected to a DC electric field, it separates into cations and anions, undergoing complex physical, chemical, and electrochemical changes.
Electrophoretic coating boasts rapid construction speed, enabling mechanized and automatic continuous operations that reduce labor intensity. This method ensures a uniform and smooth paint film, even on parts that are hard to coat with traditional methods, like welding seams on fascia plates.
The paint utilization rate is impressively high at 90%-95%. Since electrophoretic paint uses water as a solvent, it offers non-combustibility, non-toxicity, and ease of operation.
The dried paint film post-electrophoresis exhibits excellent adhesion, with superior rust, corrosion, and weather resistance compared to ordinary paints and typical construction methods.
Our paint spraying line automates the spraying of product surfaces to apply desired colors or decorations, replacing manual labor. Designed and developed by Shandong Bonita Machinery Co. Ltd, it features fast spraying speed, uniform application, high efficiency, and low energy consumption, significantly boosting output. The up and down conveying system includes an auxiliary automatic leveling device for different material lengths, with fully automated process control.
1. Rapid speed, uniform spraying, high efficiency, low energy consumption, and high output—4-5 times more than manual methods.
3. A quick color change system, customizable to customer requirements, significantly reduces gun washing time during color changes and enhances equipment utilization.
4. Centralized control for easy operation and maintenance.
5. The upper and lower conveying track system, developed to accommodate different material lengths, includes an auxiliary automatic leveling device for fully automated process control, ensuring ease and comfort during lowering operations.
6. With years of expertise in the painting process, our painting line is meticulously crafted to ensure simplicity and seamless operation. The straightforward procedures allow workers to operate quickly and efficiently.
7. Our system smartly adjusts the spray gun angle automatically, accommodating the size and shape of each product for optimal coverage.
The powder spraying line excels in applying paint and plastic treatments to workpiece surfaces. It integrates seamlessly with various delivery systems such as suspension conveyors, electric rail trolleys, and ground conveyors, ensuring smooth and continuous transportation operations.
The primary components of our powder spraying line include the powder spraying system, pretreatment equipment, painting equipment, oven, heat source system, electric control system, and suspension conveyor chain. The process flow is systematically divided into pre-treatment, powder coating, heating, and curing stages.
Advantages of our automatic powder spraying equipment:
1. By utilizing automatic powder spraying equipment, not only are labor costs significantly reduced, but product quality is also markedly improved and stabilized. This ensures smooth, stable, and large-scale production, effectively addressing productivity challenges faced by enterprises.
2. During the spraying process, the automatic spraying equipment emits no irritating odors, preventing environmental pollution and safeguarding the physical and mental health of operators.
3. Our automatic powder spraying equipment boasts a first-time powder spraying utilization rate of 70%-80%, with coating thicknesses ranging from 60 to 150 microns. Additionally, the powder coating is recyclable, enhancing the overall utilization rate to an impressive 90%-98%, ensuring a thicker, high-quality coating.
4. The powder coating used in our automatic powder coating equipment is solvent-free, ensuring a safer application process.
5. Post-curing, the powder coating exhibits high plumpness and soft color. The absence of solvents ensures the coating is less prone to pinholes and bubbles during curing. Furthermore, being a solid coating, it neither leaks nor evaporates during transportation, maintaining its integrity.
Q1. What are your terms of packing?
A: In general, we meticulously wrap our goods using thicker bubble paper to ensure optimal protection. For certain items, we also use durable cartons to provide an added layer of safety.
Q2. What are your terms of payment?
A: Our standard payment terms are by T/T, with 30% as a deposit to initiate production, and the remaining 70% to be paid before delivery. Prior to the final payment, we will provide detailed photographs of the products and their packaging.
Q3. What are your delivery terms?
A: Our quotations are typically based on FOB Qingdao. However, we are versatile and can also accommodate other terms like EXW, FOB, CFR, CIF, and DDU to suit your needs.
Q4. What is your delivery time?
A: Delivery time is generally project-specific due to our customization processes. Should your voltage requirements differ from the standard 380V/3PH/50Hz, please note that the delivery may take a bit longer to accommodate custom-made motors or electrical components.
Q5. Can you manufacture based on technical drawings?
A: Absolutely, we can produce items according to your technical drawings or specific requirements. Additionally, we can generate detailed drawings for your approval.
Q6: How do you ensure a long-term, positive business relationship with your clients?
A1. By maintaining superior quality and competitive pricing, we aim to ensure that our customers reap significant benefits.
A2. We treat every customer with the utmost respect, considering them as friends. We are sincerely committed to fostering business relationships and friendships,
regardless of their origin.
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