The "Twelfth Five-Year Plan" blueprint clearly pointed out that, as a new type of material that my country will focus on in the next five years, the market demand for cast aluminum alloy materials will continue to rise in the future and become the new favorite of the industry. At present, cast aluminum materials are used more and more widely in my country's construction engineering industry, and the development of cast aluminum industry has also obtained a significant growth rate. With the development of my country's real estate industry, there are more and more construction projects. The amount of aluminum used is also increasing. It is reported that my country's cumulative production and sales of new energy vehicles in 2015 will exceed 500,000, and demand for passenger cars will exceed 12 million. By then, the demand for aluminum alloy sheets will reach 170,000 tons per year. According to the data in the plan, the next five years will indeed be the golden period for the development of aluminum alloy plate casting in my country. However, some people have pointed out that there is a big gap between the formulation of the above goals and the current situation. The specific results need to be further improved. witness.