What material is best for automobile anti-collision steel beams?
The automobile anti-collision beam effect in high speed offset collision, collision beam can effectively the impact force from the left side of the body (or right) transfer to the right (or left), as far as possible, let the whole body to absorb collision energy. In case of a low velocity impact (usually less than 15km/h), the anti-collision beam can avoid the damage of the impact force on the front and rear rail of the vehicle body and reduce the maintenance cost.
The material of the automobile anti-collision steel beam is best, because the strength of the steel is the biggest, which can protect the car more.
Anti-collision steel beams are made of a variety of materials, including ordinary steel, carbon fiber, aluminium alloy, and glass fibre reinforced plastic.Glass reinforced plastic anti-collision beam is better: 1, energy absorption; 2, for pedestrians have protective effect; 3, high safety; 4, weight loss effect is good.The general bumper of anti-collision steel beam is composed of three parts: outer plate, buffer material and crossbeam. Wherein, the outer plate and the buffering energy absorbing material are made of plastic, and the cross beam is punched by cold rolled steel plate to form a U groove; the outer plate and the buffering material are attached to the cross beam; the cross beam is connected with the longitudinal beam of the frame. As the first barrier of automobile passive safety, the bumper is an important safety device to absorb and relax the external impact force and protect the front and rear parts of the car body.
You say these three kinds, the best aluminum alloy, followed by steel, glass fiber reinforced plastic simply can not meet the requirements of anti-collision beam, unless it is very thick. The aluminum alloy is actually called Al Mg alloy, most of which are aluminum, with a small amount of magnesium.
