How to read the used car purchase paint?
1. Look at the color difference: The general civilian car body is basically made up of 13 boards, including front bumper, rear bumper, roof cover, four doors, front machine cover, trunk lid, front fender and rear wing. Boards, etc. The colors of the 13 boards are absolutely the same when they are shipped from the factory. However, during the use of vehicles in the later period, due to vehicle accidents that may cause scratches, aging paint, and even bruises, paint must be done again in these circumstances. Strictly speaking, as long as the paint is redone, it will produce a color difference, commonly known as differential color. It should be noted here that not all body color differences can prove that a vehicle has experienced a traffic crash. Because the vehicles are usually exposed to the sun and wind, small scrapers will cause the vehicle to paint again and cause color difference. Therefore, when you meet a vehicle that has a color difference, do not immediately determine that it is a large accident vehicle. Instead, you must make careful observations before you can judge.
2, see pits: In the painting process, you need to prior to the original car paint surface sealing glaze and paint out, this step is generally used very fine water sandpaper for grinding, it will cause many small traces of sand marks Although it is not very obvious, you can still find out if you look closely. In addition, during the paint process, because many auto repair shops do not have a sterile paint booth, it is difficult to ensure a clean construction environment. Therefore, when painting, tiny particles of air will be sprayed onto the paint surface. The paint surface produces a lot of pits, and these pits are easily spotted under light.
3, look at the fuel tank cap: Now the vehicle to do paint again, in order to avoid color, will use two methods, the first is regardless of the number of places to do the paint, the whole vehicle paint spray. This approach can avoid chromatic aberrations, but the maintenance time is longer and the cost is higher. Another common practice is to compensate for color differences by using local paint sprays. When adjusting the paint, the paint is mainly based on the color of the paint on the surface of the fuel tank cover. There are several reasons: First, the fuel tank cover is not easy to be hit, and it will basically keep the paint color of the car at the time of delivery. Secondly, the fuel tank cap can be directly removed to facilitate paint contrast when painting. Since spray painting requires dismantling the fuel tank cover and lacquer, it is basically possible to determine whether or not the vehicle has been painted after it has been inspected for any signs of screwing on the fuel tank cover fixing screws.
4, to see the paint fog: vehicle re-painting will produce a color difference in addition to paint fog will also be attached to the body of the seal or vehicle parts. Therefore, it is possible to judge whether or not the vehicle has been painted by these varnish.
5, see the paint thickness: Even if the vehicle spray paint quality is very good, but the thickness of paint after the paint and the original car factory paint thickness will still be different, especially when the poor quality of the paint, the paint film thickness difference Large, sometimes you can feel it with your hands. If you hit the paint, the sound is boring, indicating that the paint is thicker. The original car paint is relatively very thin because of the good adhesion of the paint surface, and the sound of knocking will be relatively brittle. Therefore, it is also easy to judge whether the paint surface has been painted in this respect. Of course, this method requires some experience.
6, in addition to the above traditional observation vehicle paint, to determine the vehicle paint repair method. There is a modern method for testing vehicle paint: Use a computerized film thickness meter to take points on the paint surface of the vehicle, check the paint on the entire vehicle, and analyze the thickness data of the paint on the computer to confirm whether the paint on the various parts of the automobile paint has been painted. , Get a full-body paint quality level distribution range chart report. The report can indicate which parts of the vehicle are the original paint surface, which parts are painted, and the extent of the paint finish. The advantage of this method is that it accurately measures and analyzes the thickness of the car paint, and it has a detailed description of the degree of repair and repair of the car paint, and it has a high degree of accuracy, allowing you to see the paint on the car at a glance. Face condition.
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