Die casting, the full name of pressure casting, is a metal casting process that uses a mold cavity to apply high pressure to the molten metal to solidify the molten metal to form a casting. Compared with other casting technologies, die casting is a more widely used, fast-developing, more advanced and more efficient precision parts manufacturing technology, which adapts to the development trend of modern manufacturing products such as complexity, precision, light weight, energy saving, and environmental protection. Die-casting is a metal thermal processing technology with a small amount of cutting and close to non-cutting solidification. It has the advantages of light material, wear resistance, high density of aluminum castings, high mechanical strength, good heat transfer and electrical conductivity, high temperature resistance, beautiful appearance of aluminum castings sand holes, energy saving and high efficiency. It is widely used in precision electronic equipment such as automobiles, home appliances, aviation, machinery, etc. middle. According to different materials, die casting products can be divided into aluminum alloy die castings, magnesium alloy die castings, zinc alloy die castings and copper alloy die castings. The application of aluminum casting products in downstream industries shows a diversified trend. At present, die-casting products have been widely used in automobiles, motorcycles, communications, home appliances, computers, medical equipment, construction, hardware products, power tools, lighting equipment, escalators, toys, lamps and other industries. With the continuous improvement of die-casting technology and product development capabilities, the application of die-casting parts in emerging industries such as robotics, aerospace, new energy, and healthcare will also develop further. In recent years, the good development momentum of the automobile industry has made automobile die-casting an important supporting industry for the development of the die-casting industry. At present, the output of automobile die-casting parts in my country accounts for more than 70% of the total output of die-casting parts. In recent years, the rapid growth of automotive lightweight demand has promoted the rapid development of the automotive aluminum alloy precision die casting industry. Aluminum alloy die castings occupies an important position in the automotive industry. In recent years, the proportion of aluminum alloy die castings in automobile consumption has reached about 80%.