Powder Dip Coating Line

I. Product Overview

The powder dip coating line is an automated coating system used for corrosion protection and decoration on products such as guardrails, steel structures, hardware tools, appliance housings, and metal accessories.

This equipment forms a uniform thermoplastic or thermosetting powder coating on the workpiece surface through a process of heating → dipping → curing → cooling. This coating offers excellent weather resistance, corrosion resistance, and mechanical properties.

This line supports both manual and fully automated operation and can be flexibly customized based on the customer's workpiece size and production capacity requirements. It is an ideal choice for modern manufacturing companies seeking energy-saving, environmentally friendly, and efficient production.

II. Equipment Advantages

Fully Automated Production

The entire process of conveying, heating, dipping, and curing is automated, supporting 24/7 continuous operation and minimizing manual intervention.

Stable Coating Quality

The coating achieves controllable thickness (80–350μm), excellent uniformity, and strong adhesion, meeting high corrosion protection standards.

Energy Saving and Environmental Protection

The line utilizes a highly efficient powder recovery system, achieving a powder recycling rate of up to 95%, zero VOC emissions, and environmentally compliant. Flexible Customization

The conveying method, heating method, and dipping tank structure can be customized based on the workpiece material, shape, weight, and production capacity requirements.

Intelligent Control

Real-time monitoring of process parameters automatically adjusts temperature and conveying speed to ensure consistent and stable production.

III. Core Process Flow

Pretreatment (Degreasing → Pickling → Phosphating → Water Rinse)

Removes oil and oxides from the workpiece surface to improve dip coating adhesion.

Preheating

Heats the workpiece to 180–230°C to ensure uniform powder adsorption.

Powder Dipping

The workpiece is immersed in the powder tank using a lifting or tilting mechanism to ensure uniform coating on both the inner and outer surfaces.

Curing

The workpiece enters the curing oven and is heated to 200–260°C to melt, level, and securely bond the powder.

Cooling

The coating rapidly solidifies in the cooling zone and reaches optimal performance.

Quality Inspection and Packaging

After passing the coating inspection, it enters the packaging and warehousing stages.

IV. Technical Parameters (Customizable)

Workpiece Size Range: Length 500–6000mm, Width 200–1500mm, Height 100–1200mm

Production Rate: 20–80 pieces/hour (Customizable)

Conveyor Method: Suspension Chain / Floor Chain / Roller

Heating Method: Electric / Gas / Infrared

Coating Thickness: 80–350μm (Adjustable)

Recycling Efficiency: ≥95%

Energy Savings: ≥20%

V. Application Cases

Highway Guardrail Manufacturer: After adopting a powder dip coating line, product corrosion resistance improved by 50%, with salt spray test resistance exceeding 1000 hours.

Steel Structural Parts Processing Plant: Production line efficiency increased by 40%, with a product consistency rate of 99.5%.

Home Appliance Industry: Flexible customization enables concurrent production of multiple workpiece specifications, shortening lead times by 25%.

VI. Service Support

Customized Solution Design: Tailor-made production lines based on customer workpieces, production volume, and factory conditions.

Installation and Commissioning: Our team of engineers provides on-site installation guidance to ensure rapid production.

Training and Technical Support: Provides operational and maintenance training to reduce labor costs.

After-Sales Service: 24/7 response time and regular inspections ensure stable equipment operation.