The car has been driving for a long time, and the sheet metal is easy to rust. Sheet metal rust not only affects the appearance of the car, but also may cause safety accidents and affect the safety of the car. Although the car manufacturing technology of car companies has progressed, and the anti-rust and anti-corrosion process has been added in the vehicle production process, the problem of car rust is still prohibited. Some people say that stainless steel will not rust, why don't car companies use stainless steel to build cars?
In the process of automobile development, in fact, some manufacturers have tried to make cars with stainless steel, but they have tried once and given up, and this car company is Porsche. In the 1960s, Porsche, as a pioneer in the automotive industry, tried the idea of making cars out of stainless steel. Although Porsche's technology is very mature, this time the car has encountered many difficulties, and after trying this time, it has never been made of stainless steel again.
Porsche built a Porsche 911 out of stainless steel, which is currently in the museum's collection and is currently the only stainless steel Porsche 911 in the world. The Porsche 911 maintains its original stainless steel colour throughout its body, and because it did not pass performance tests, it could not be put on the road, but could only be placed in the museum for visitors to enjoy.
What are the difficulties in building a car from stainless steel?
The ductility of stainless steel is worse than that of ordinary steel, and it is very difficult to make it into various shapes according to the body shape. Porsche used several sets of molds to make these stainless steels into the desired shape. The mold also needs to be manufactured, because the grinding difficulty of stainless steel is too high, resulting in a lot of increase in the cost of making a car.
The biggest feature of stainless steel materials is that they do not rust, but it is not that they will never rust, and if they are corroded by other substances, they will also rust. Everyone's home must have stainless steel basins, these basins are generally made of 304 stainless steel, the use of a long time, the edge of the basin will also begin to rust. Therefore, cars made of stainless steel also need to be regularly cared for, but it is more difficult to take care of than ordinary steel.
And cars made of stainless steel, there is no way to paint. The adhesion of the stainless steel surface is very poor, even if it is spray painted on it, it will not take long for the paint to fall off. Now everyone has high requirements for body color, and there are also requirements for tailor-made body colors, but the cars produced with stainless steel are all one color, and consumers must not be able to accept it.
There is another reason that stainless steel cars are heavier than ordinary car bodies. Porsche is a supercar manufacturer, in order to reduce the weight of the car, reduce the fuel consumption of the car, Porsche adopts a lightweight body design, many materials on the body surface have been replaced by carbon fiber material.
The weight of stainless steel is heavier than traditional steel, heavier than carbon fiber, the quality of the car made of stainless steel is twice as high as before, and the weight of the body means that the fuel consumption will increase, and the fuel economy of the vehicle will be reduced.
Porsche took a lot of time and effort to build this stainless steel Porsche 911, but the car failed to pass the safety performance test, and the cost of the car was more than twice as high as the previous car.
A car that costs a lot of money to build, but there is no way to get on the road, even a manufacturer like Porsche is unacceptable, so after trying once, it is abandoned. Other car companies have also learned from Porsche's experience, even if they know that stainless steel will not rust, they dare not use it to build cars.
[The pictures in this article come from the Internet, and the infringing contact is deleted]