1. Air Spray Painting Equipment
Air spray painting equipment is the most traditional spraying method, using compressed air to atomize and spray the paint. Its core components include an air compressor, spray gun, paint tank, and paint delivery piping. During operation, compressed air passes through the air holes inside the spray gun, forming a high-speed airflow that atomizes the paint into tiny particles, evenly adhering to the workpiece surface.
Features: Low equipment cost, simple operation, wide applicability, suitable for small-batch production or spraying complex-shaped workpieces. However, paint utilization is relatively low (approximately 30%-50%), prone to overspraying, and requires a high level of operator skill.
Price Range: Manual air spray guns cost between 200-800 yuan, small air compressors cost approximately 2000-5000 yuan, and the total cost of the equipment can be controlled within 10,000 yuan.
2. High-Pressure Airless Spray Painting Equipment
High-pressure airless spray painting equipment uses a high-pressure pump to pressurize the paint to 10-30 MPa, directly spraying and atomizing it through nozzles, eliminating the need for compressed air. Its core components include a high-pressure pump, spray gun, paint tank, and pressure regulating device.
Features: High paint utilization rate (70%-90%), spraying efficiency is 3-5 times that of air spraying, suitable for large-area or thick-coating applications (such as bridges, ships, and steel structures). However, the equipment cost is higher, and it has strict requirements on paint viscosity, requiring regular maintenance of the high-pressure pump.
Price Range: Small high-pressure airless spray painting machines cost approximately 5,000-15,000 RMB, while large industrial-grade equipment can cost 50,000-100,000 RMB.
3. Electrostatic Spray Painting Equipment
Electrostatic spray painting equipment utilizes a high-voltage electrostatic field to charge paint particles, which are then attracted to the oppositely charged workpiece surface under the influence of the electric field. Its core components include an electrostatic generator, spray gun, paint supply system, and grounding device.
Features: Extremely high paint utilization rate (over 90%), excellent spray uniformity, especially suitable for spraying metal workpieces. However, the equipment cost is high, and it has strict requirements on environmental humidity and paint conductivity, requiring regular cleaning of the spray gun to prevent clogging.
Price Range: Manual electrostatic spray guns cost approximately 3,000-8,000 RMB, while fully automatic electrostatic spraying lines can cost 200,000-500,000 RMB.
4. Automated Spray Painting Equipment Automated spray painting equipment combines robotics, sensors, and control systems to automate and intelligently manage the spraying process. Its core components include industrial robots, spray guns, paint supply systems, vision positioning systems, and PLC control systems.
Features: High spraying efficiency, stable quality, and the ability to operate continuously for 24 hours, suitable for mass production. However, the equipment cost is high, requires professional technicians for maintenance, and has certain limitations on workpiece shape and size.
Price Range: Small six-axis spraying robots cost approximately 150,000-300,000 RMB, while large automated spraying lines can cost over 1 million RMB.
