Our houses may be easier to paint, but cars are not. And this is because we are looking for their color to meet a number of specificationswhich we should take into account.
Think in principle that from this color we don’t just want it to look prettyaccording to our tastes but, above all, to be one outer layer of car protection.
To be able to “sit” on metal surfaces and to act as an antioxidant. To withstand the sun and the weather for years. To offer specific reflections. Not to be spoiled by chemical agents, such as flies and bird droppings. And, in the case of microcontacts, to maintain its coherence. Not to crack or fray.
To give you a small taste of how all this is achieved, it is interesting to take a look in the operation of a paint shop, in a modern production line. First we have the body, stripped of engines, windows, interior and everything else. This should be thoroughly washed, dried and degreased of any fingerprints and anything left over from the original wash.
Then he enters one electrolytic tank, usually with zinc phosphate, to prepare the surfaces to receive the first layers. An electrostatic paint that ensures corrosion resistance, even in cracks or places that are hard to reach with conventional spray paint.
After being baked, dried and re-cleaned with various chemical solutions, the bodywork is ready to receive the primer, the first layer. It evens out the irregularities of the underlying layer, can be sanded easily and provides a smooth surface. Next, it comes the base coat of paint. This is also what gives the color, so great care is needed to spread it evenly, to the right thickness and not to run. Finally, it’s coming a top layer that seals any gaps and acts protectively on the coating of the main color, protecting it from the elements of nature, UV radiation, etc.
The whole process in a modern, fully automated factory, it can take around 14 to 18 hours, to complete a car. This layering is completely controlled and uniform, in a thickness that reaches about that of a human hair. How many layers of paint, of course, the manufacturer will go through, has to do with him as well with the value of the car.
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