Aluminum alloy castings and die castings are mainly used in vehicles, motorcycles and other transportation tools, followed by electronics, electrical appliances, home appliances and small hardware. my country is moving towards 150 kilograms. The average amount of aluminum used per car is 200 kilograms in industrially developed areas, and the highest has reached 380 kilograms (cars).

The output of aluminum alloy casting products in my country has reached 2.8 million tons, of which die castings account for more than 55%, low pressure casting products account for about 25%, sand casting products output about 20%, and other casting products output about 3%, with an average annual growth rate. Therefore, in the past few decades, cast aluminum alloy materials have closely followed the requirements of the development of modern transportation industries such as automobiles and motorcycles, and have developed high strength, high toughness, high wear resistance, low expansion and contraction, China Aluminum alloy parts weldability, surface treatment, Aluminum alloys for casting and die-casting with corrosion resistance, fatigue resistance and good fluidity can meet the needs of automobile engines, pistons, cylinders, wheels and other applications.   
In recent years, with the rapid and sustained development of the national economy, especially the rapid development of modern transportation, aerospace and electromechanical industries, not only the number of aluminum alloy castings has increased greatly, but also the quality requirements have become higher and higher. Aluminum alloy vehicles have been gradually promoted from motorcycles to cars, medium-sized vehicles, and heavy-duty vehicles.

At present, about 10% of primary aluminum and 85% of secondary aluminum in the world are used to produce aluminum alloy castings. At present, the world’s annual output of automobiles is about 70 million, and the number of automobiles is 800 million. Therefore, there are higher requirements for the composition and performance of cast and die-cast aluminum alloys. It can be said that the development of automobiles is the real driving force of aluminum alloy casting products. For example, the wheels of automobiles and motorcycles have basically used aluminum. Currently, the world needs more than 300 million aluminum alloy wheels per year, and my country has built a production capacity of 150 million per year. With the rapid development of modern vehicles such as automobiles and motorcycles, there is a lot of room for aluminum alloy casting products. In 2010, my country’s automobile production has exceeded 18 million, and the number of automobiles has exceeded 80 million.

If aluminum alloy castings and die castings account for 75% of automotive aluminum, then the number of automotive aluminum alloy casting products is very considerable. In recent years, they have also begun to be widely used in aerospace, machinery manufacturing and other industries. In 2010, the world’s aluminum and aluminum alloy casting products reached 22 million tons, of which die castings accounted for more than 60%, low pressure castings and sand castings each accounted for about 20%, and the annual growth rate was about 10%

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