Electrophoretic coating is a revolutionary technology that immerses the painted object in water-soluble paint, with the object serving as the anode (anodic electrophoresis). A corresponding cathode is introduced, and a direct current is applied between the two poles. This current causes the paint to evenly coat the object through the synergistic physical and chemical effects, ensuring a smooth, uniform finish.
The meticulous process flow of electrophoretic coating on metal surfaces involves several well-defined 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. Each step is crucial for achieving the highest quality coating.
Electrophoretic coating is a comprehensive process that includes four simultaneous phases, ensuring a flawless application.
1. Electrophoresis: Driven by a DC electric field, colloidal particles charged either positively or negatively swim towards the respective opposite poles. This movement is also referred to as 'swimming'.
2. Electrolysis: Concurrent redox reactions occur at the electrodes, leading to oxidation and reduction phenomena that are essential for the coating process.
3. Electrodeposition: Colloidal particles move towards the anode due to electrophoresis, releasing electrons upon contact with the template surface, resulting in an insoluble state deposition. This action forms a paint film through a precipitation phenomenon.
4. Electroosmosis: Under the influence of an electric field, the liquid phase moves while the solid phase remains static. This crucial process expels water from the paint film, resulting in a highly dense and resistant coating with minimal water content.
5. Iron Red Epoxy Electrophoresis Paint Example: This paint system incorporates modified epoxy resin, butanol, ethanol amine, talc, and iron red substance. When mixed with distilled water and subjected to a DC electric field, it undergoes a series of complex physical, chemical, and electrochemical changes resulting in a high-performance coating.
Electrophoretic coating boasts remarkable speed in construction and enables mechanized, automatic, and continuous operations. This not only reduces labor intensity but also ensures a uniform paint film with strong adhesion. Even parts that are traditionally difficult to coat, such as welding seams, receive an even and smooth finish.
The paint utilization rate in electrophoretic coating is impressively high at 90%-95%. Using water as a solvent, the paint is non-combustible, non-toxic, and easy to handle, making it a safer and more efficient choice for industrial applications.
Once dried, the electrophoretic paint film exhibits superior adhesion, enhancing rust resistance, corrosion resistance, and weather resistance beyond what ordinary paints and general construction methods can offer.
Paint spraying line is designed to automatically adorn the surface of products with desired colors or decorations, thus replacing manual labor with automated spraying. The paint spraying line developed by Shandong Bonita Machinery Co. Ltd boasts rapid spraying speeds, uniform application, high efficiency, and low energy consumption. This innovation significantly boosts output. The up-and-down conveying system includes an advanced auxiliary automatic leveling device to accommodate varying lengths of materials, with the entire process being fully automated.
1. Enjoy unparalleled speed, uniform spraying, immense efficiency, and low energy consumption, resulting in an output that is 4-5 times greater than manual labor.
3. The quick color-change system, customizable to client requirements, drastically reduces gun cleaning time during color changes, thereby enhancing equipment utilization rates.
4. Features a centralized control system for effortless operation and maintenance.
5. The upper and lower conveying track system is engineered to handle materials of various lengths. The auxiliary automatic leveling device ensures seamless and comfortable lowering, with fully automated process control.
6. Leveraging years of expertise in painting processes, our painting line is designed for simplicity and smooth operation. Workers benefit from straightforward procedures and rapid operation.
7. Spray gun angles can be adjusted automatically based on the size and shape of the product.
The powder spraying line excels in applying paint and plastic treatments to workpiece surfaces, integrating seamlessly with delivery systems such as suspension conveyors, electric rail trolleys, and ground conveyors.
Key components of the powder spraying line include a powder spraying system, pretreatment equipment, painting apparatus, oven, heat source system, electric control system, and suspension conveyor chain. The process is segmented into pretreatment, powder coating, heating, and curing stages.
Advantages of Automatic Powder Spraying Equipment
1. Utilizing automatic powder spraying equipment not only slashes labor costs but also markedly enhances product quality and ensures its consistency. This facilitates smooth, large-scale production, effectively resolving productivity challenges.
2. During the spraying process, automatic spraying equipment emits no irritating odors. This prevents environmental pollution and safeguards the health of the operators.
3. The initial utilization rate of powder in automatic powder spraying equipment ranges from 70%-80%, with coating thicknesses between 60-150 microns. Remarkably, powder can be recycled, achieving an overall utilization rate of 90%-98%. Single coatings yield thicker applications.
4. The powder used in automatic powder coating equipment is solvent-free,
5. Upon curing, the powder coating exhibits high plumpness and soft coloring. The absence of solvents prevents pinholes and bubbles during curing, and being a solid coating, it eliminates leakage and evaporation during transport.
Q1. What are your packing terms?
A: Typically, we ensure the safety of our products with robust bubble wrap, and for some, we use sturdy cartons for extra protection.
Q2. What are your payment terms?
A: We operate on a T/T basis, requiring a 30% deposit to commence production and a 70% balance before shipment. We will provide you with detailed photos of the products and packaging prior to the final payment.
Q3. What are your delivery terms?
A: Our standard quotes are based on FOB Qingdao, but we are flexible and can accommodate EXW, FOB, CFR, CIF, and DDU terms as well.
Q4. What is your typical delivery time?
A: Delivery times are project-specific due to customization. If your voltage requirements differ from the standard 380V/3PH/50Hz, please expect longer lead times for custom motors or electrical components.
Q5. Can you manufacture based on technical drawings?
A: Absolutely. We can produce according to your technical drawings or specific requirements. Additionally, we are capable of creating drawings for your approval.
Q6: How do you ensure a long-term and beneficial business relationship?
A1. We maintain high quality and competitive pricing to ensure our customers derive maximum benefit.
A2. We treat each customer as a valued friend and engage in sincere business practices, fostering genuine relationships.
This approach holds true, irrespective of their geographical location.
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