Development and Current Situation of Alloy Die Casting Industry

Many characteristics of pressure casting technology have shown great advantages in improving the accuracy, production efficiency and surface quality of non-ferrous metal alloy castings. With the development of automobile, motorcycle and other industries, as well as the realization of design requirements such as improving the quality of die castings, saving energy consumption and reducing pollution, the application scope of non-ferrous metal alloy die castings, especially light alloy (aluminum and magnesium alloy) die castings, is expanding rapidly. It has been shown that replacing iron and steel castings with aluminium alloy and magnesium alloy castings is becoming an important development trend in developed countries. At present, die casting has become one of the most widely used processes in automotive aluminum alloy forming process, accounting for 49% of all automotive forming processes.

Since the 1990s, China’s non-ferrous metal die-casting industry has become a new industry while achieving amazing development. There are about 3000 non-ferrous metal die-casting enterprises in China. The output of die-casting increased from 266,000 tons in 1995 to 870,000 tons in 2005, with an average annual increase rate of 12.58%. Aluminum alloy die-casting accounts for more than 3/4 of all die-casting production.

With the improvement of technology level and product development capability, the categories and application fields of aluminium alloy die casting products are expanding continuously, and the types of alloys, die casting equipment, die casting die and die casting process have undergone tremendous changes.

New Development of Die Casting Aluminum Alloys

Die-casting aluminium alloy has been commercialized since 1914. With the development of automobile industry and the invention of cold chamber die-casting machine, its alloy types have developed rapidly. Die-cast aluminium alloys can be divided into low strength (e.g. Y102 in China) and high strength (e.g. Y112 in China) according to their properties. At present, the main series of die-casting aluminium alloys used in industry are Al-51, Al-Mg, Al-Si-Cu, Al-Si-Mg, AI-Si-Cu-Mg, Al-Zn and so on. Main Die Casting Aluminum Alloy Series Used in Industrial Developed Countries