Water-borne Automatic Paint Line for Automotive Parts

Waterborne Automatic Paint Line for Automotive Parts is a complete coating system for automotive plastic and metal components, combining robotic spraying, environmental control, flash-off and drying systems, engineered according to part geometry, coating process and production capacity. 

Loading → Surface Cleaning / Pretreatment → Flame/Corona Treatment → Primer Spraying → Flash-off → Clearcoat Spraying→ Multi-stage Drying / Curing→ Inspection → Unloading

Stage 1: Flash-Off Zone (45 to 55°C) - Controlled, low-temperature moisture evaporation helps stabilize the wet film, assisting in the prevention of surface skinning, solvent boiling, and micro-bubbling.

Stage 2: Gradient Drying (55 to 70°C) - Segmented thermal release aids in safely extracting deep-layer water vapor from polymer substrates (PP, ABS) while reducing thermal shock.

Stage 3: Precision Curing (70 to 95°C) - Controlled thermal cross-linking promotes thorough resin curing, supporting targeted levels of adhesion, pencil hardness, and chemical resistance.

Configuration is finalized according to part size, coating layers, takt time and factory layout. 

Interior Parts: Door trims, instrument panels, center consoles and decorative components.

Exterior Parts: Bumpers, grilles, mirror housings, lamp housings and exterior trim.

EV Components: Plastic and metal components requiring controlled waterborne coating.

Typical substrates: ABS, PC/ABS, PP and other automotive-grade plastics, subject to coating compatibility testing.

Project Requirements
Review part drawings, material, coating specification, target output and workshop conditions.

Process Design
Define the coating process, conveyor layout, spray method, drying system and environmental control requirements.

Equipment Configuration
Select robots, spray equipment, booths, ovens, conveyors and control components according to the process and capacity.

Manufacturing & Installation
Complete equipment fabrication, factory installation, electrical connection and system integration.

Commissioning & Acceptance
Adjust spray parameters, conveyor speed, temperature and drying conditions, followed by coating trials and final acceptance.

Raw Material and Pre-Treatment Verification: Auditing incoming substrate surface conditions, cleaning parameters, and closed-loop wash water quality to establish preparation baselines.

Environmental and Spray Parameter Monitoring: Tracking cleanroom temperature, humidity, atomization pressure, and electrostatic voltage to help maintain targeted transfer efficiency and coating consistency.

Thermal Profile Auditing: Verifying multi-zone temperatures across the flash-off, gradient drying, and curing stages to support proper resin cross-linking without thermal shock.

Finished Surface and Film Inspection: Measuring dry film thickness, gloss levels, and surface appearance against specified tolerances for Class-A exterior components.

System FAT and Traceability: Executing operational simulation tests on PLC control systems, safety interlocks, and logging parameters to generate compliance documentation prior to delivery.

Installation & Commissioning
Provide equipment installation guidance, system integration, parameter adjustment and coating trial support to ensure stable line operation.

Operator Training
Train operators on equipment operation, maintenance, safety procedures and troubleshooting.

Technical Support
Offer remote assistance, spare parts supply and preventive maintenance guidance for long-term production reliability.

Warranty Service
12-month mechanical warranty from final site acceptance with continuous technical support.