company news about Static powder coating

Static powder coating is an efficient surface coating technology widely used for metals, plastics, and other materials. When designing a static powder coating system, several key factors must be considered:

1. Selection of Spraying Equipment
Type of Spray Gun: Choose an appropriate static spray gun, commonly ring-type or single-point spray guns.
Powder Supply System: Ensure uniform powder supply and avoid clogging.
2. Design of the Electrostatic Field
Voltage Setting: Select an appropriate voltage (generally between 30-100kV) to ensure effective powder particle adhesion.
Electric Field Distribution: Design a reasonable electric field distribution to ensure even coating.
3. Environmental Control
Temperature and Humidity: Control the temperature and humidity in the workshop to affect powder flow and adhesion.
Airflow: Ensure good airflow to avoid powder settling and particle aggregation.
4. Powder Characteristics
Powder Selection: Choose suitable powders based on coating requirements, such as polyester or epoxy resin.
Particle Size Distribution: The powder particle size should be uniform, typically between 20-60 microns.
5. Pre-Treatment Process
Substrate Cleaning: Ensure the substrate surface is free from oil, rust, etc., usually requiring chemical cleaning or mechanical sanding.
Surface Treatment: Consider treatments like phosphating or anodizing to enhance adhesion.
6. Spraying Process
Spraying Distance: Control the distance between the spray gun and the workpiece, generally 15-30 cm.
Spraying Speed: Adjust spraying speed according to the shape of the workpiece and coating requirements.
7. Baking and Curing
Curing Temperature and Time: Set the curing temperature (generally between 160-200°C) and time (10-30 minutes) based on the powder characteristics.
8. Quality Control
Coating Thickness: Regularly check the coating thickness to ensure it meets standards.
Surface Defect Inspection: Inspect the coating for adhesion, glossiness, and uniformity.
By considering and optimizing these factors, an efficient and reliable static powder coating system can be designed.