Zhejiang Huier Coating Environmental Protection Equipment Co., Ltd
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Aluminum curtain wall fluorocarbon painting production line
1. Equipment overview
Aluminum curtain wall fluorocarbon painting production line is an automatic system specially designed for fluorocarbon coating on the surface of building aluminum curtain wall, covering the whole process of pre-treatment, spraying, curing and environmental protection and purification. It has the characteristics of high weather resistance, strong adhesion, low VOC emission , etc. It is suitable for large aluminum plants and curtain wall manufacturers.
Second, the core process flow
Aluminum substrate → pretreatment (degreasing/washing/passivation) → Drying → electrostatic primer spraying → Leveling → fluorocarbon top paint spraying → curing → Cooling → quality inspection
3. Technical highlights
Energy saving : Waste heat recovery system reduces energy consumption by 20%, and RTO thermal efficiency is increased to 95%.
intelligent : AI adaptive spraying algorithm, according to the shape of aluminum to adjust the spray gun trajectory and paint output.
green production : water-based fluorocarbon coating compatibility design, VOC emission < 30mg/m³.
4. Application scenarios
building curtain wall : high-rise building exterior wall aluminum plate, shaped curved aluminum.
industrial anti-corrosion : Bridges, airports and other outdoor high-corrosion environment aluminum structure.
system module core component function description
1. Pretreatment system - degreasing tank (alkaline cleaning agent) removes grease and impurities from aluminum surface and improves adhesion of coating.
- Passivation tank (chromified/chromium-free conversion film equipment) forms a dense chemical conversion film to enhance anti-corrosion performance (the mainstream chromium-free environmental protection process in 2025).
2. Spraying system - Automatic electrostatic spray gun (rotary cup/air mixing type) accurately atomized fluorocarbon coating, electrostatic adsorption to ensure uniform coverage, spraying efficiency increased by 30%.
- The paint supply unit (two-component metering pump) precisely controls the ratio of fluorocarbon resin and curing agent to ensure the chemical stability of the coating.
3. Curing system - high temperature drying channel (gas/electric heating) stage temperature control (80℃ preheating →220℃ curing), to ensure that the fluorocarbon coating fully cross-linked, weather resistance of more than 25 years.
- Hot air circulation fan evenly distributes heat to prevent aluminum deformation or color difference.
4. Conveying system - suspension chain/ground chain (frequency conversion speed regulation) automatic transportation of aluminum, supporting continuous production of multi-specification workpieces (speed can be adjusted to 3-8m/min).
5. Environmental protection purification system - RTO regenerative incinerator treats VOC waste gas, purification efficiency ≥98% (in line with the 2025 national standard GB 37824-2023).
- Dry paint mist filter (carton/labyrinth) intercepts spray paint mist, recycling rate ≥85%.
6. Intelligent control system - Central PLC+ Industrial Internet of Things (IIoT) real-time monitoring of temperature and humidity, coating thickness, energy consumption data, support remote operation and maintenance and fault warning.
- Visual detector (AI coating quality inspection) automatically identifies coating pinhole, orange peel and other defects, quality rate ≥99.5%.
1.High cost performance Based on the customer's product positioning and development strategy, based on economic benefits, to achieve the best cost performance.
2. Advanced equipment design concept of excellence, high degree of automation of industrial equipment, show modern advanced enterprise style.
3.High adaptability to meet the current production requirements, and reserve space for development, considering the later production increase and quality improvement needs.
4. Quality standards strictly follow the IS0900 quality management system, and every small link of the entire equipment installation is strictly checked.
