With the continuous development of China's automobile industry, the application range of aluminum alloy has become very wide. At the same time, the processing technology of aluminum has also made great progress, which puts forward higher requirements for the processing performance of aluminum. In recent decades, new processing technologies and methods for aluminum alloys have also emerged, as has die casting of automotive parts.
Among the existing lightweight metal materials, although the density of magnesium alloy is lower than that of aluminum alloy, the cost of magnesium ingot is relatively high, and it is very easy to corrode when used in combination with iron. The process of manufacturing parts requires the use of many techniques to solve problems and difficulties encountered in practice. Only aluminum alloy has the characteristics of extensiveness, the manufacturing technology is more mature, the parts manufacturing cost is relatively low, the mechanical strength is relatively high, sometimes even comparable to medium carbon steel. Therefore, in the future choice of automobile lightweighting
Aluminum alloy has become the metal material of choice. Secondly, the aluminum refining and alloying technology is constantly improving, the equipment is constantly updated and the processing technology is also constantly developing, the performance of aluminum alloy parts has also been greatly improved, and the price will also be reduced. To a large extent, it can be a good solution to the specific problem of automobile aluminum plating. Thirdly, aluminum resources are very rich and the market supply is relatively sufficient. In the earth's crust, the content of aluminum is high, fully one-third more than iron. In addition, aluminum can be recycled, thus can provide sufficient raw materials. According to incomplete statistics, 120,000 tons to 140,000 tons of aluminum can be recycled from end-of-life vehicles each year. As a result of these two factors, aluminum prices have been falling.