Reading: Buying used cars is the most feared accident vehicle, but this problem can be easily found out from the details of the appearance of paint. The next Xiaobian will give you a brief introduction on how to use the details of the car paint to determine the accident used car. If a used car is an accident car, then there must be traces of sheet metal or paint repair on the body paint surface, and the scope of repair will be relatively large. Therefore, as long as it involves the detection of second-hand accident vehicles, it will be necessary to do a paint inspection project to reveal the history of the accidents that occurred in the vehicle and determine whether the vehicle is an accident vehicle. It can be said that after reading the vehicle paint surface, we can generally understand the car's flaws and accident history. Of course, if you want to fully and accurately determine whether the vehicle belongs to a technically recognized accident vehicle, you still need professional second-hand car appraisers to pass professional equipment. The result of the comprehensive inspection of the chassis, front and rear anti-collision beams, and body structure is quasi.
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If it is only to detect the paint condition of the body, you can use the second-hand car identification artifact - "paint surface detector" to uncover the historical veil of the vehicle sheet metal paint.
As the name implies, the paint surface detector is an instrument for detecting the value of the vehicle body paint surface. By testing the thickness of the paint surface and the body iron sheet, it is determined whether there is a trace of sheet metal or paint. In the test, the car roof is generally used as a reference. If the value of other parts is obviously higher than the reference value, the vehicle part can be judged to have been subjected to sheet metal and spray painting. In the process of appraisal of used vehicles, if the tester finds that the difference between the numerical value and the reference value is very large, it will further inspect whether there is an accident trace on the vehicle and determine whether it is an accident car.
Little knowledge: The paint on the new car is painted by computer automation, and it is carried out entirely in a clean and dust-free workshop. Therefore, the thickness between the paint and the body metal will be uniform and there will be no big ones. difference. The paint that was manually sprayed after the damage to the vehicle was in fact impossible to match the thickness of the original paint. In addition, if there are repairs such as sheet metal, there will be a putty glue between the paint and the metal, and the thickness between the paint and the metal will be even greater.
Generally, the thickness of most cars is in the range of 80-140. A few imported cars may reach 150 or more. If you test the left door of the car, you can test five points on the upper, lower, left, right and middle points of the car door. If you want to add 5 to the value, you mean the average value. If the value of a point is greater than the average value of 30um or more, the car may be a minor repair. Of course, if you completely replace the car door, you also need to detect the internal screw and other joints. For inspections in this area, please see Shield Brother's previous article.
The detection of the body ABC column is an important indicator to determine the accident car. If the ABC column has traces of repairs such as sheet metal or replenishment, it indicates that the vehicle has a large number of accidents. The used car appraisers will focus on further inspection of the vehicle chassis and front and rear side beams.
Of course, the ABC column paint value of this car is normal, indicating that the car has not experienced a serious accident and the car body structure has not been damaged.
Of course, it is unavoidable to encounter car accidents, and sheet metal and replenishment are very common maintenance items. In the used car market, there are almost no vehicles that are completely uncoated or repainted. As long as the professional testing of used car appraisal and appraisers has ruled out the situation where the vehicle technically belongs to the accident car in a strict sense, the used car with a minor accident can still be purchased with confidence. After all, the price/performance ratio of a used car is also reflected in this. aspect