Powder Coating Equipment

Powder coating equipment is a surface treatment system based on electrostatic principles and thermosetting technology. Its working process typically includes powder conveying, electrostatic spraying, powder recovery and recycling, thermal curing, and post-treatment inspection. The equipment uses a high-voltage electrostatic generator to charge the powder, which then adheres uniformly to the grounded workpiece surface under the action of air pressure. Subsequently, the workpiece enters a high-temperature oven for curing, where the powder melts and flows to form a uniform and dense paint film.
The advantages of powder coating equipment include environmental friendliness with no solvent emissions, high coating utilization rate, strong adhesion, and good corrosion and wear resistance. At the same time, the equipment can achieve fully automated production and flexible switching, adapting to large-scale production or multi-variety mixed-line production, greatly improving factory production efficiency.

▶ Main Components

1. Powder Conveying System
The powder conveying system is responsible for transporting powder coatings from the storage hopper to the spray gun and ensuring a stable powder flow rate. The equipment typically uses screw conveying, pneumatic conveying, or a combination of both. The powder conveying system can be configured with multiple storage hoppers for quick switching between different colors or types of powder, improving production flexibility. The system also includes flow rate adjustment and monitoring devices to maintain uniform powder application and process stability.
2. Electrostatic Spraying Unit
The electrostatic spraying unit is the core component of the powder coating equipment. It mainly consists of an electrostatic spray gun, controller, high-voltage generator, and operating robot.
The electrostatic spray gun generates an electric charge through high voltage, causing the powder particles to become charged. After the workpiece is grounded, the powder is evenly attached by electrostatic attraction.
Robot spraying systems enable fully automatic trajectory planning and precise spraying, suitable for complex shapes or large workpieces.
Manual spraying units are suitable for small-batch production or localized spraying of special workpieces.
Key performance indicators of the spraying unit include powder particle uniformity, powder coverage rate, spraying speed, and spraying angle, which can be precisely controlled through program settings.
3. Recovery and Recycling System
The powder coating recovery system recovers, filters, and reuses the powder that does not adhere during the spraying process, thereby improving powder utilization and reducing waste. The recovery system generally includes: recovery pipes, cyclone separator, filter bag or cyclone + filter bag combination, and powder re-conveying module. An efficient recovery system not only reduces production costs but also reduces dust emissions, meeting environmental standards.
4. Curing Oven
The curing oven is responsible for heating and melting the powder attached to the workpiece surface, allowing it to flow and form a strong paint film. The oven temperature can be precisely controlled according to the powder type, workpiece material, and coating thickness, generally in the range of 160-200°C. Oven types can be divided into tunnel type, continuous type, or direct-through type from the powder coating chamber to adapt to different production cycle requirements. Uniform temperature distribution and constant airflow design ensure uniform and smooth coating thickness on each workpiece.

5. Conveying and Workpiece Positioning System
The conveying system can utilize roller conveyors, chain conveyors, overhead conveyors, or automated guided vehicles (AGVs/AMRs) to transport workpieces, ensuring efficient connection between spraying, powder recovery, and curing processes. The positioning system ensures that the workpiece maintains a stable position during the spraying process to improve coating uniformity and spraying efficiency.
6. Intelligent Control System
The intelligent control system is the "brain" of the powder coating equipment, achieving the following functions through PLC, touch screen, data acquisition modules, etc.:
Real-time monitoring of spraying parameters (voltage, current, powder flow rate)
Synchronization of conveying cycles
Oven temperature and air speed control
Spray robot path planning
Powder recovery status monitoring
Production data recording and traceability management
The intelligent control system supports remote monitoring and process optimization, providing data support for equipment operation and maintenance.

▶ Advantages

Environmentally Friendly and Efficient
Powder coating is solvent-free, with no harmful volatile emissions, and powder recovery rates exceeding 95%.
Strong Adhesion and Durability
The cured paint film is corrosion-resistant, wear-resistant, and impact-resistant, ensuring a long service life.
High Production Efficiency
The automated spraying and conveying system allows for continuous operation, enabling mass production and increased capacity.
Strong Process Stability
Electrostatic spraying and oven temperature control ensure uniform coating thickness and consistent color.
Flexible Production Capabilities
By adjusting spraying parameters or changing powder types, the equipment can quickly adapt to various workpiece shapes and color requirements.
Superior Cost Control
High recovery rates, automated operation, and optimized energy management effectively reduce paint consumption and labor costs.
Data Traceability and Intelligent Management
Production parameters, workpiece information, and equipment status are automatically recorded, enabling full process traceability and quality analysis.

▶ Application Industry

▶ FAQ

Can the integrated assembly line be quickly adapted to accommodate different products?
Yes, the integrated assembly line supports flexible design, enabling rapid changeover of workstation fixtures, program control, and process parameters. By changing pallets, adjusting workstation equipment, and calling different programs, different product models can be put into production, making it particularly suitable for manufacturing multiple product sizes on the same line.

   
Can we integrate automated inspection or marking capabilities into the assembly line?
Of course. The integrated assembly line supports embedded in-line inspection methods such as vision inspection, torque testing, and airtightness testing. Process modules such as automatic labeling and laser coding can also be added, automating the entire process from assembly to inspection and marking, improving product consistency and traceability.

   
If production capacity increases in the future, can the assembly line be upgraded and expanded?
Extension is fully supported. The modular design of the assembly line supports adding workstations, replacing conveyor systems, or upgrading to robotic automation. The system control platform includes reserved communication ports for easy integration with new equipment, MES systems, and warehousing systems, enabling on-demand expansion and intelligent upgrades.

Jiangsu Jiheng Technology Co., Ltd. is located in Yancheng City, Jiangsu Province, a pearl on the Yellow Sea coast and home to the world's rare elk and red-crowned crane. Yancheng is crisscrossed by the Coastal Expressway, the Ningjingyan Expressway, the Xuhuaiyan Expressway, and the Xinchang Railway, which runs north and south. The city also boasts an international airport with over ten direct flights to South Korea, Thailand, Taiwan, and other countries, offering convenient transportation and advanced communications.

The company specializes in the research, development, manufacturing, and installation of coating and environmental protection equipment.

We provide one-stop services from concept development, design, manufacturing, installation, and commissioning to ensure product quality. We also have an experienced product design team to ensure the technological sophistication of our entire product design. We have already delivered high-quality projects for multiple manufacturers.

Adhering to the business philosophy of prioritizing technology, optimizing management, and keeping pace with the times, we are dedicated to providing customers with coating equipment, mobile spray painting, drying equipment, dust removal equipment, ventilation equipment, and complete coating production lines. Customer requirements are our driving force for continuous improvement. We will continue to strive for technological leadership, superior quality, and integrity, striving to provide our customers with high-quality, environmentally friendly products.
Jiangsu Jiheng Technology Co., Ltd. sincerely hopes to cooperate with friends from all walks of life, work hand in hand, and create a brilliant future together.