From what aspects should we judge the quality of automobile sheet metal parts?

2022-12-06 16:33:43

The first is to touch the surface of the car sheet metal with your hands to see if there are any pits. This is easily overlooked, but it is also very important. After leaving the factory, the body-in-white comes to the painting workshop through electrophoresis and other processes. At this time, there may be small irregular bumps on the surface. In order not to let them affect the spraying effect, the staff will do a careful inspection. The tool takes care of it. Of course, some defects may not be discovered in time due to the reviewer's sloppy, then you need to touch it yourself.

It is said that the staff who manufacture Lexus can feel the subtle differences on the body with their hands. It is difficult for us to reach a similar level without professional training, but you don’t have to worry too much. After all, as long as a car meets the factory standard, it is It is less prone to defects visible to the naked eye of consumers.

Secondly, we also need to observe the gap and flatness between the various covers.

Regarding the gap, each OEM has different standards, which is related to brand positioning. After all, it is not realistic for the Fit to reach the same level as the E-class. The cost is in front of us, and the gap needs to be faced squarely. For models with well-matched cover parts, the gap will be relatively uniform, that is, there will be no situation of getting smaller or bigger. If you have a pair of feeler gauges on hand, you can do the measurement. This is a more professional method, but it is simpler. It is also more common to touch the little finger along the gap to feel whether it is even.

One more point here is that some gaps on the car body will be designed to be relatively large due to safety factors. At this time, you don’t have to worry about whether the quality of the sheet metal is unqualified. , if the little finger can be inserted into it, it must indicate that there is a problem with the assembly level.

Regarding the flatness, the simple way to judge is to touch the lap joint of the front cover and the fender, and feel the flatness with your hands. The left and right sides should be consistent, and there should be no asymmetry between the left and right. In addition to the large positions such as the front cover and fenders mentioned just now, you also need to pay attention to small details such as the fuel tank cover, which often expose the carelessness of the manufacturer.