Automobile painting generally refers to the painting of various types of automobile bodies and parts such as cars, buses, and trucks. Due to the high decorative requirements of automobile painting, the painting technology of automobiles, especially cars, is a professional painting technology. Car painting has the following characteristics.
1. Automotive coatings are advanced protective coatings
Since the car is a means of transportation that drives on the ground and is used under harsh conditions, it has to experience the sun, rain, wind and sand, alternating wet and dry, and cold and hot changes, so the car coating film is required to have good protection performance. It has good gloss and color retention properties, no pulverization, no shedding, no foaming, no rust, and has excellent corrosion resistance, weather resistance, and resistance to the erosion of various corrosive substances. For example, the requirements for the corrosion resistance of automobile coatings are: the automobiles produced after 1985 in the world should have no corrosion on the outer panel within 5 years, no perforation corrosion within 10 years, and no damage to the structure within 20 years or 300,000 kilometers. Rusty standard. The salt spray resistance of the coating should reach more than 700h.
2. Automobile painting belongs to middle and high-level decorative painting
Automobile coatings have gorgeous and pleasant colors, bright mirror-like surfaces, bright and plump appearances, especially for cars that require extremely high decorative effects, not only the appearance of the coatings is very decorative, but also the variety of colors the flow of the times
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3. Automobile painting is the most typical industrial painting
Due to the large output and high quality requirements of automobiles, mass production lines are adopted and produced in modern painting workshops. Due to the implementation of automatic control and management of process conditions to ensure that the coating has a good quality, the rhythm of the automatic production line is fast. Generally, each step of the process is only tens of seconds to a few minutes. Effective and rapid coating pre-treatment, coating method and mode of transmission.
4. The coating of automobiles generally adopts multi-layer coating
For example, the coating film of a car body is composed of a primer layer, an intermediate paint layer, and a top paint layer. The total thickness of the coating is above 80µm.
