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The difference between powder spraying and oil spraying

October 31, 2023

The difference between powder spraying and oil spraying

Powder Coating and Oil Coating are two different surface coating and coating technologies. They have important differences in coating materials, processes and performance. Here are the main differences between them:

1. Coating material:

Powder spraying: Powder spraying uses solid powder coatings, usually composed of resins, pigments and other additives. These powder pigments do not need to be diluted or evaporated before painting because they are solid.
Oil spraying: Oil spraying uses liquid paint that usually needs to be diluted to the proper viscosity before application. Liquid paint usually consists of organic solvents and pigments.
2. Coating process:

Powder spraying: The process of powder spraying involves spraying powder coating evenly onto the surface of the workpiece, usually using electrostatic adsorption or electric charge to attract the powder particles, and then curing it in a drying chamber. The process of curing involves heating so that the powder particles melt and adhere to the surface to form a strong coating.
Oil spraying: The process of oil spraying involves spraying liquid paint onto the surface of a workpiece, usually using a spray gun or spray equipment. After liquid paint is sprayed on a surface, it needs time to evaporate the organic solvent and usually needs to dry or cure in the air.
3. Environment and health:

Powder spraying: Powder spraying is generally more environmentally friendly because it contains no organic solvents and no volatile organic compounds (VOCs) are released in the process. This helps reduce air pollution and improves the safety of the work environment.
Oil spraying: Oil spraying may release organic solvents and VOCs, which may pose potential risks to the environment and worker health. Therefore, measures are often required to reduce these emissions.
4. Coating performance:

Powder-coated: Powder-coated coatings are generally more resistant to wear, corrosion, and chemicals, and have better scratch resistance. They also provide uniform coating thickness.
Oil Spray: The performance of oil spray coatings depends on the type and quality of paint used. They may require more maintenance and are not as durable as powder-coated coatings in some applications.
5. Appearance:

Powder-coated: Powder-coated coatings typically provide a uniform, smooth, semi-gloss or glossy appearance. They can achieve a variety of colors and effects.
Oil Sprayed: The appearance of an oil-sprayed coating can be customized depending on the paint used, allowing for different gloss levels, colors and textures.
In summary, powder spraying and oil spraying are two different methods of painting and coating technology, which are suitable for different types of applications and have different characteristics and effects. The choice of technology usually depends on the requirements and nature of the workpiece and the desired coating properties.

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