1, traditional sheet metal repair, sheet metal repair is to repair the deformed part of the automobile metal shell. For example, if the car body shell is knocked out of a pit, it can be restored to its original state by sheet metal, and then the deformed car metal surface can be restored to the same brightness as other intact places by spraying special paint.

2. Non-destructive repair of car pits, usually also called paint-free car pit repair, is to repair various pits, depressions and depressions on the car body surface caused by external factors.

This technology is to use a series of special tools and repair agents to restore the dent of the car body to its original state conveniently and quickly without destroying the original car paint, rather than repairing it in a general sense. It has the characteristics of fast repair time, maintaining the original appearance of car paint and reasonable cost, and the sunken part will never be deformed or faded after repair.

Extended data:

The repair technology of convex and concave plane without painting is based on the principles of mechanics, thermodynamics and optics. The visual effect of light refraction is used to judge the position and degree of depression, and the "skin" inside the car body is massaged by lever principle to gradually release the tension at the depression of the car body.

Maximize the "entropy" value of the concave surface of the car body, restore the concave to its original state, and realize the rapid, accurate and complete repair of the concave surface of the car body. At the same time, mirror coating technology can also help the repaired car surface to be as bright as new.

Dent repair is a modern technology based on the principles of optics, physics and mechanics, which uses the lever principle to reduce dents of different sizes and shades on the car body due to various external reasons without damaging the paint surface of the car body and overstretching the metal surface.

Baidu Encyclopedia-Repair of Car Depression