Automatic Electrophoretic Coating Line For The Automotive Industry

Brand Name:Jingtu
Place of Origin:China
Tank Size:Customized based on production needs
Ultrafiltration System Flow Rate:1-2 m³/h
Circulation Pump Flow Rate:20-40 m³/h
Curing Temperature:160-180 °C
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Location: Wuhan Hubei China
Address: Block B, Zhongnan Century Plaza, Wuhan, Hubei Province, China
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Product Details

Product Description
The electrophoretic coating process is extensively utilized in the automotive industry due to its numerous advantages, such as high paint utilization, low environmental pollution, automated production, enhanced safety, and excellent rust, impact, and corrosion resistance. This process is particularly beneficial for coating complex-shaped auto parts, including those with intricate edges, angles, holes, and cavities. It ensures uniform coverage even in hard-to-reach areas, such as the inner cavities and crevices of car frames, chassis, and other structural components. This results in a high-quality, consistent finish and significantly improves the anti-corrosion properties of the workpieces. To achieve these outcomes, advanced technology, extensive experience, efficient service, and a safe, stable production system are essential.


Application Fields of Electrophoretic Coating Production Lines
Electrophoretic coating production lines are widely employed in various industries, including:

  • Automotive: Traditional and new energy vehicles
  • Transportation: Motorcycles, rail transportation, and aerospace
  • Industrial Machinery: Agricultural machinery, engineering machinery, and structural parts
  • Consumer Goods: Household appliances, daily hardware, and 3C electronics
  • Specialized Industries: Shipbuilding, military, wind power, and sheet metal parts

This technology is particularly valued for its ability to provide uniform and durable surface treatment across diverse applications.


Features of Jingtu Electrophoretic Coating Lines

With years of expertise, our company has developed electrophoretic coating lines with the following standout features:

  1. Modular Design: The equipment is designed, produced, and installed in modular units, ensuring a visually appealing structure, reliable performance, and a significantly shortened construction cycle.
  2. Advanced Filtration Technology: A combination of rotary liquid separators, magnetic filters, and paper belt filters effectively purifies the tank liquid, enhancing the overall cleaning efficiency.
  3. Multi-Stage Oil Removal System: Our proprietary oil-water separator technology delivers exceptional oil removal performance.
  4. Eco-Friendly Process: By integrating EDRO technology and a counter-current water replenishment process, our system achieves zero discharge, minimizing environmental impact.

Electrophoretic Coating Process
The workflow of electrophoretic coating equipment is as follows:

  1. Pre-Cleaning: Removal of surface contaminants.
  2. Loading: Placement of workpieces onto the production line.
  3. Degreasing: Elimination of oils and greases.
  4. Washing: Rinsing off residual degreasing agents.
  5. Rust Removal: Elimination of surface rust.
  6. Neutralization: Adjustment of surface pH levels.
  7. Phosphating: Formation of a phosphate layer to enhance coating adhesion.
  8. Passivation: Improvement of corrosion resistance.
  9. Electrophoretic Coating: Application of a uniform coating through electrophoresis.
  10. Tank Cleaning: Removal of excess paint from the workpiece surface.
  11. Ultrafiltration Washing: Final rinse using ultrafiltration water.
  12. Drying: Curing of the coating through drying.
  13. Unloading: Removal of finished workpieces from the line.


Process Parameters

Parameter NameParameter Range/ValueDescription
Electrophoretic Voltage100-400 VAdjusted based on workpiece material and coating thickness requirements.
Electrophoretic Time2-5 minutesImmersion time in the tank, affecting coating thickness and uniformity.
Tank Liquid Temperature28-32 °CAffects paint fluidity and deposition efficiency.
Solid Content of Tank Liquid18-22%Proportion of solid components in the paint, affecting quality and thickness.
pH Value5.8-6.5Acidity or alkalinity of the tank liquid, influencing paint stability and deposition.
Conductivity1200-1600 µS/cmReflects the ion concentration in the paint.
Coating Thickness15-25 µmAdjusted based on anti-corrosion requirements and workpiece application.

Composition of Electrophoretic Coating Equipment
The electrophoretic coating system comprises the following key components:

  • Electrophoretic Tank: The main tank for coating application.
  • Transfer Backup Tank: Auxiliary tank for paint storage and transfer.
  • Tank Circulation Filtration System: Ensures consistent tank liquid quality.
  • Ultrafiltration (UF) Device: Separates and recycles water and impurities.
  • Electrode and Electrolyte Circulation System: Maintains the electric field and current.
  • Paint Temperature Control System: Regulates paint temperature for optimal results.
  • DC Power Supply System: Provides the necessary electrical power.
  • Paint Replenishment Device: Automatically maintains paint concentration.
  • Post-Electrophoretic Cleaning Device: Cleans residual paint from workpieces.
  • Electrophoretic Coating Room (Dust Cover): Protects the coating area from contaminants.
  • Electrical Control Cabinet: Manages the operation of the entire system.

These specialized components, along with additional equipment such as conveyors, drying ovens, and cooling chambers, form a complete electrophoretic coating production line.


Equipment Parameters

Parameter NameParameter Range/ValueDescription
Tank SizeCustomized based on production needsTank dimensions must accommodate workpiece size and production volume.
Ultrafiltration System Flow Rate1-2 m³/hDetermines the cleaning efficiency and paint recovery rate.
Circulation Pump Flow Rate20-40 m³/hEnsures uniform mixing and deposition of the paint.
Curing Temperature160-180 °CAffects coating hardness and adhesion.
Curing Time20-30 minutesEnsures complete drying of the coating.
Power Supply CapacityCustomized based on tank size and voltage requirementsMust meet the power demands of the electrophoretic process.

Paint Parameters

Parameter NameParameter Range/ValueDescription
Paint TypeCathodic Electrophoretic Paint/Anodic Electrophoretic PaintCathodic paint is more commonly used for superior anti-corrosion performance.
Paint Solid ComponentsEpoxy Resin, Pigments, Additives, etc.Main components affecting coating performance and appearance.
Paint Viscosity20-30 s (Ford Cup)Influences paint fluidity and coating results.

Environmental Parameters

Parameter NameParameter Range/ValueDescription
Wastewater DischargeNear Zero DischargeAchieved through EDRO technology and counter-current water replenishment.
VOC Emissions< 50 g/m³Volatile Organic Compound emissions, compliant with environmental standards.

Quality Control Parameters

Parameter NameParameter Range/ValueDescription
Coating Adhesion≥ 5 MPaBonding strength between coating and substrate, evaluated by cross-cut or pull-off tests.
Salt Spray Resistance≥ 720 hoursAnti-corrosion performance in salt spray environments.
Surface RoughnessRa < 0.8 µmSmoothness of the coating surface, affecting appearance and subsequent processes.

Conclusion
Jingtu's electrophoretic coating lines combine cutting-edge technology, efficient design, and eco-friendly processes to deliver superior coating solutions for the automotive industry and beyond. With a focus on quality, reliability, and sustainability, our systems ensure exceptional performance and long-lasting results.

China Automatic Electrophoretic Coating Line For The Automotive Industry supplier

Automatic Electrophoretic Coating Line For The Automotive Industry

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