The first thing we need to understand is an accident car. If there is an accident, then its body must have traces of sheet metal or paint repair, and the scope will be relatively large. At this time, we need to use the car paint thickness gauge to detect the paint surface, so as to reveal the historical situation of the large and small accidents that have occurred in the vehicle, so as to judge the specific situation of the vehicle. It can be said that if you understand the paint surface of the vehicle, you will have a general understanding of the car's scratches and accident history.
Therefore, the paint thickness gauge can be regarded as a second-hand car, an artifact of identification, it can uncover the historical veil of vehicle sheet metal painting.
As the name suggests, the car paint thickness gauge is a paint surface detection instrument. The instrument can judge the paint situation by detecting the thickness of the paint surface. In the inspection, a benchmark value is generally selected, usually the roof, and the value detection in other places is higher than the roof. If it does, it means it was painted.
And here I will give you a little knowledge: the paint surface of the new car is uniformly sprayed automatically, and it is carried out as a whole in a very clean dust-free workshop, so every part of the vehicle is measured evenly with the instrument. There will be big differences. In fact, it is impossible to achieve the same thickness as the original factory spray paint after the vehicle is partially damaged. In addition, if there are repairs such as sheet metal, putty glue is applied between the paint surface and the metal, and the car paint thickness gauge is used to detect the thickness between the paint surface and the metal will be larger.
The scientific name of the paint thickness gauge is a coating thickness gauge, which is a professional instrument used to detect the thickness of the coating. In the automotive circle, the paint thickness gauge is mainly used to detect the thickness of the car paint surface, so as to judge whether the vehicle paint surface is repainted.
National standards for paint thickness in the automotive industry
First: It is the standard for the cheapest pure entry-level economical mini-car (the bare car price is less than USD$10,000 ), and its paint surface should not be less than 90μm. Said to be relatively low, when the result is lower than 90μm, we can also regard it as cutting corners on the paint surface.
Second: it is stipulated for any model with a price higher than USD$10,000 : the minimum cannot be lower than 120μm (hard index), if it is lower than 120μm, we can also regard it as the manufacturer's cutting corners on the paint surface.
How to use the paint thickness gauge:
1. Press and hold the power button when the paint film meter is turned off to start the paint film meter.
2. Clear the value of the paint thickness gauge to zero.
3. Aim the paint thickness gauge on the surface of the car paint to be tested. Be careful not to be too close or too far. Generally speaking, a distance of 5cm is appropriate.
4. Read the value on the paint thickness gauge. In the same car paint test area, measure the four corners and the middle position respectively, a total of 5 points, and then take the average value.