Before you buy a car, most of your friends will have a comprehensive understanding of the car. So, do you know why car bumpers are made of plastic? Next, let's introduce the auxiliary bumper bar.
Introduction to automobile bumper auxiliary bar: Principle
The outer plate and buffer material are made of plastic, and the cross beam is stamped into a U-shaped groove with a cold-rolled sheet with a thickness of about 1.5mm; The outer plate and buffer material are attached to the cross beam, which is connected with the frame longitudinal beam by screws and can be removed at any time. The plastic used in this plastic bumper is generally made of polyester and polypropylene by injection molding.
For example, the bumper of Peugeot 405 car is made of polyester materials and made by reaction injection molding. The bumpers of Volkswagen's Audi 100, golf, Santana in Shanghai and Xiali in Tianjin are made of polypropylene materials by injection molding. There is also a kind of plastic called polycarbonate system abroad, which infiltrates alloy components and adopts the method of alloy injection molding. The processed bumper not only has high-strength rigidity, but also has the advantages of welding, but also has good coating performance, and is used more and more on cars.
Introduction to automobile bumper auxiliary bar: material
The bumper has the functions of safety protection, decorating the vehicle and improving the aerodynamic characteristics of the vehicle. In terms of safety, it can play a buffer role in case of low-speed collision accident and protect the front and rear body; It can protect pedestrians in case of accidents with pedestrians. From the appearance, it is decorative and has become an important part to decorate the appearance of the car; At the same time, the car bumper also has a certain aerodynamic effect.
Do you know more about the auxiliary bumper bar introduced by Xiaobian than before? I hope you can learn more about cars in your spare time. The material selection of auto parts has a certain basis. Let's do this for today's introduction.