Weight loss is perhaps the biggest mission given to all new automotive materials. Whether aluminum replaces conventional steel or plastic replaces metal, the biggest or most basic effect is weight loss, because weight loss is the most direct, simplest and most effective way to improve vehicle fuel economy and reduce emissions.
In addition to reducing weight, aluminum can also improve vehicle safety. The unique energy absorption properties of high strength aluminum alloys, combined with clever design, can greatly improve the safety of vehicles using such materials in large Numbers. The use of aluminum alloy can maintain or even increase the size and energy absorption of front and rear end collision buffer zones without adding weight.
In addition, aluminum alloy is not easy to rust, corrosion, compared to steel is more durable, extending the service life of the vehicle. Some data show that since 1888, about 75 percent of aluminum is still in use today. Worldwide, reducing body weight through aluminum could reduce greenhouse gas emissions by 660 million tons per year, 9% of which is related to transportation.
Automotive aluminium alloy
Why not use aluminum alloy in batches? Because of you!
So now the car aluminum alloy is mainly used in sports cars.
At present, steel is still the most important metal material in automobile body. How to realize the connection between steel and aluminum is another big problem. At present, the auto Shanghai connection with aluminium still adopts the mechanical method in most cases, rare circumstances connected by hot working way, such as spot welding, the explosion welding and laser and extrusion, etc., but the process is limited by many conditions, such as the size and the form of welding position, joint, etc., especially the spot welding process do not have access to reliable, continuous weld.