Application of dust particle counter in automobile spraying dust-free workshop

“Dust is almost everywhere, and the number of particles in the general atmosphere is about 10 million particles/m3 to 40 million particles/m3. Specifically, for example, a paint shop with an annual output of 150,000 cars has a construction area of ​​about 50,000 square meters, a volume of 300,000 square meters, and a total of 3 to 12 billion particles.

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Dust is almost everywhere, and the number of particles in the general atmosphere is about 10 million particles/m3 to 40 million particles/m3. Specifically, for example, a paint shop with an annual output of 150,000 cars has a construction area of ​​about 50,000 square meters, a volume of 300,000 square meters, and a total of 3 to 12 billion particles.

The spraying industry has very high environmental requirements and needs to be operated in a dust-free environment. The air in the spraying work area should be kept clean. The editor understands that if dust in the air adheres to the paint film, it will not only affect the quality of the car, but also affect the aesthetics and corrosion resistance of the coating. Generally speaking, the requirements for environmental cleanliness in the spraying industry are between 10,000 and 100,000.

Generally speaking, the gloss of the surface of the car body is required to be greater than 90, and the best gloss can reach about 95, which is close to the mirror effect. With such a bright surface, any defects will appear clear, especially the gray particles, which are very conspicuous. Dust particles are the biggest enemy in the car spraying process and the most difficult factor to control in the spraying process. For car painting, more than 80% of defects are caused by dust particles.

On the painted surface of the car body, if the dust particles are on the top of the paint and the particle size is not large, they can be treated by sanding and polishing, otherwise they can only be reworked.