Sheet metal spray painting is a car repair technology, which is to repair the deformed parts of the metal shell of the car. For example, if the car body shell is hit with a crater, it can be restored to its original shape through sheet metal, and then it can be restored to its original shape. By spraying special paint, the deformed metal surface of the car can be restored to the same brightness as other intact areas. After the car body has been corrected by sheet metal, there are still some defects that cannot be compensated for by the sheet metal work. Even if new parts are replaced, there will be imperfections. In order to be more perfect and precise, you must use sculpture craftsmanship to make up for the defects. After the car is deformed or damaged due to other reasons, its flatness, wheel angles and lines need to be filled with scraping dust to grind out each part. Use this formula to explain: scraping dust = restoring body skin = mold product = mold As for the processing procedure, any body skin of a car is stamped by a mold. Repairing the body skin is the same as repairing the mold, so our scraping and shaping process must be connected with the mold processing. This is what ordinary painters do. For work that cannot be done, many painters who have been working for many years will sigh: "It is easy to paint a car well, but it is difficult to paint a piece of ash, and it is difficult to paint a piece of ash in ten years." What do people who say this really know? Had the car spray painted.

Car spray painting refers to applying a layer of paint to the surface of the car to protect the car. Automobile spray painting generally uses baking paint. In the automobile manufacturing plant, the frame and shell are welded, and the next process is painting. The forms include ordinary paint, metallic paint, and pearlescent paint. Automobile painting process: puttying, sanding, painting, etc.

Ordinary paint

Ordinary paint is the simplest, resin, pigment and additives.

In-depth analysis: Ordinary paint is the most common car paint and it appeared earliest. Most of the cars people came into contact with more than ten years ago were using this kind of paint. It is characterized by low cost and craftsmanship. Simple, but its gloss is not very good, its surface hardness is not high, and it is particularly easy to scratch. Therefore, it is rarely used on cars, and even if it is, it is on low-end models. It is mostly used on trucks and buses. However, cars using this type of paint have an advantage in price. [1]

Metallic paint

Metallic paint, also called metallic flash paint, is a popular automotive topcoat. Fine aluminum particles are added to its paint base. After the light hits the aluminum particles, it is reflected by the aluminum particles through the air film. Therefore, it appears as if the metal is sparkling. This kind of metallic glitter paint gives people a pleasant, light and novel feeling, so it is very common. By changing the shape and size of the aluminum particles, you can control the glitter of the metallic glitter paint film. On the outside of the metallic paint, a layer of varnish is added for protection.

In-depth analysis: Metallic paint is based on ordinary paint with aluminum powder added, so it looks bright after completion. The biggest feature of metallic paint is not only its high brightness, but also its hardness is higher than ordinary paint. There are a lot of them, and it is not easy to be scraped off by ordinary objects, so cars, especially high-end cars, basically use metallic paint, and it has become a trend. Cars with metallic paint are generally two or three times more expensive than the same type of cars with ordinary paint. Thousand dollars.

Pearlescent paint

Pearlescent paint, also called mica paint, is also a popular automotive topcoat. Its principle is basically the same as metallic paint. It uses mica instead of aluminum particles. Its paint base contains mica pigments coated with titanium dioxide and iron oxide. After the light hits the mica particles, it first takes on the color of titanium dioxide and iron oxide, and then undergoes complex refraction and interference in the mica particles. At the same time, mica itself also has a special, transparent color. In this way, the reflected light has a pearl-like sparkle. Moreover, titanium dioxide itself has a yellow color, which changes to light blue when squinted. It has different colors when viewed from different angles. Therefore, pearlescent paint gives people a novel, colorful and dazzling feeling.

In-depth analysis: Mica paint is not widely used in automobiles. 1. Do you know what color is the cheapest? That's white. For example, the world-class brand red pigment is about 25 times more expensive than the world-class brand titanium dioxide; while the amount of titanium dioxide used in white paint is about 5 times that of red pigment. Therefore, the color cost of red paint is five times higher than that of white paint. This is why some domestic cars have so few color varieties: simple and low cost. 2. The additives added to the paint (such as light stabilizers, antioxidants, etc.) are very important. Good additives are expensive. Many times, the quality of the additives determines how the paint feels. People will definitely think that a paint that starts to show obvious fading after 2 years is worse than a paint that is as shiny as new after 5 years. But in reality, there is no paint that does not fade. Many times, manufacturers are more concerned about fading evenly. Try not to have color differences in different parts of the car.