Pretreatment Line for Electrophoresis/Electrophoretic KTL/EPD Coating Categories Coating Production Line

Metal Substrate Electrophoresis (E-Coating) Pretreatment Line — Customizable Solution

This advanced electrophoretic (E-coating) pretreatment line is specifically engineered to provide high-performance surface preparation for automotive metal components. It creates a stable and reliable foundation for subsequent E-coat finishing by thoroughly removing contaminants, activating the substrate surface, and enhancing coating adhesion and corrosion resistance.

Each processing stage is precisely designed to ensure consistent quality and process reliability. A critical highlight of the system is the acid treatment stage, which effectively removes surface oxides, scale, and persistent residues, significantly improving coating uniformity, adhesion strength, and long-term durability.

The entire pretreatment line operates under accurate process control and intelligent monitoring, maintaining stable parameters such as chemical concentration, bath temperature, and treatment time to ensure repeatable and high-quality results.

Pretreatment Process Flow

1. Pre-Degreasing: Initial removal of surface oils and loose contaminants to prepare the workpieces for deep cleaning.

2. Degreasing: Chemical degreasing stage that thoroughly eliminates residual grease and organic pollutants, ensuring effective downstream processing.

3. Rinse Stage 1: First water rinse to remove degreasing chemicals and prevent carryover.

4. Rinse Stage 2: Secondary rinse that further improves surface cleanliness and minimizes cross-contamination.

5. Acid Treatment: A key activation process that removes oxides and micro-scale impurities while enhancing surface reactivity, ensuring superior E-coat adhesion and coating performance.

6. Rinse Stage 1: Initial rinse to neutralize and flush away acid residues.

7. Rinse Stage 2: Final rinse delivering a clean, residue-free surface ready for electrophoretic coating.

Applicable Workpiece Dimensions

This pretreatment line is designed for automotive metal parts with maximum dimensions of:

1.1 m × 4.0 m × 2.0 m

Customization Capability

The system can be fully customized according to your specific requirements, including:

• Workpiece size and weight

• Production capacity and takt time

• Chemical pretreatment systems

• Line layout and factory space constraints

• Integration with existing E-coating or painting lines

Our engineering team will tailor the pretreatment solution to match your product characteristics and operational goals, ensuring optimal efficiency, coating quality, and long-term reliability.