With the development of modern industry, the application of light metal materials is becoming more and more extensive. Aluminum and aluminum alloys have a series of advantages such as low density, strong electrical and thermal conductivity, excellent mechanical properties, and good machinability, and have been widely used in various sectors of the national economy. In the field of construction, for example, 98% of high-rise buildings in Japan use aluminum alloys for doors, windows and wall decoration. Compared with ordinary wooden doors and windows and steel doors and windows, aluminum alloy doors and windows have the characteristics of light weight, material saving, beautiful appearance, corrosion resistance, and convenient maintenance. Although the Read more