Color Coating Line

A high-end metal sheet surface coating solution integrating automation, intelligence, and environmental-friendliness, specially designed for continuous, efficient, and high-quality color coating processing of metal coils such as cold-rolled sheets, hot-dip galvanized sheets, and Zn-Al-Mg coated sheets.

Relying on precise coating control technology and a full-process intelligent management system, this color coating line enables unmanned operation from substrate pre-treatment to finished product coiling. It is widely used in construction materials, home appliance manufacturing, automotive interiors, hardware products and other fields, empowering downstream enterprises to create high-value-added color-coated metal products.

2. Core Technical Advantages

2.1 High-Precision Coating Control

Equipped with imported precision coating systems and online film thickness testing devices, it enables accurate control of coating thickness. It supports single/double-sided, single/multi-layer composite coating. The coating adhesion meets high standard requirements, with excellent salt spray resistance and high color uniformity, satisfying the stringent coating performance demands of different industries.

2.2 Full-Process Intelligent Management & Control

Adopting a PLC+MES intelligent control system, it real-time monitors key parameters such as coating temperature, application speed and curing time. It supports formula storage and one-click switching, and is compatible with various coating types including polyester (PE), polyvinylidene fluoride (PVDF) and high-durability polyester (HDP). Production data is traceable and analyzable, greatly improving product consistency and production management efficiency.

2.3 High-Efficiency, Energy-Saving and Green Production

Equipped with a waste heat recovery system and a VOCs waste gas treatment device, the waste gas emission concentration complies with relevant standards. It adopts infrared + hot air composite curing technology, which enhances curing efficiency and reduces energy consumption effectively. The production line supports chrome-free passivation process, meeting the requirements of new environmental protection regulations and achieving clean production.

2.4 Wide Adaptability and Flexible Customization

It can process various types of sheets with a wide range of thickness and width, supporting high-speed stable operation and large-scale processing capacity. It supports customization of coatings with different colors and glossiness, meeting the diverse and personalized needs of building exterior walls, home appliance panels and other applications.

2.5 Stable, Reliable and Low-Maintenance Operation

Core components are made of wear-resistant and corrosion-resistant alloy materials, ensuring long service life of key equipment. The modular design facilitates disassembly, assembly and maintenance, reducing equipment failure rate significantly, effectively cutting downtime and improving equipment utilization rate.

3. Core Components & Process Flow

3.1 Core Components

Uncoiler → Pre-treatment Section (degreasing, cleaning, passivation) → Coating Section (roll coating/spray coating) → Curing Oven → Cooling Section → Quality Inspection Section → Coiler → Intelligent Control System → Environmental Protection Treatment System

3.2 Process Flow

Substrate Loading → Uncoiling & Leveling → Degreasing & Cleaning → Chemical Passivation → Moisture Drying → Coating Application → High-Temperature Curing → Cooling → Online Inspection (film thickness, color difference, adhesion) → Finished Product Coiling → Packaging & Warehousing

4. Typical Application Scenarios

Construction Field: Color-coated steel sheets for roof panels, wall panels, rolling shutter doors, etc., featuring excellent weather resistance and long-lasting color retention.

Home Appliance Field: Panels for refrigerator, washing machine and air conditioner casings, with smooth and aesthetic coatings and scratch resistance.

Automotive Field: Automotive interior panels, door frames and other components, meeting the requirements of lightweight and corrosion resistance.

Other Fields: Hardware furniture, filing cabinets, storage racks, etc., enhancing product appearance and service life.

5. Service Guarantee

We provide turnkey project services covering the entire process from site planning, customized line design, equipment manufacturing, installation and commissioning to technical training. Each piece of equipment is accompanied by detailed technical documents and quality inspection reports, with a standard warranty period. We also commit to lifelong supply of spare parts and technical support. Customized non-standard production lines can be designed according to customer needs to match different production capacities and process requirements.