Aluminum has low melting point and good casting property. The mechanical properties of aluminum are closely related to its purity. The strength of industrial aluminum plate is low, but the aluminum alloy composed of aluminum and some alloy elements not only retains the inherent characteristics of aluminum to some extent, but also significantly improves its hardness and strength. When some aluminum alloys are used as structural materials, their strength can exceed that of general structural steels; When other aluminum alloys are used as die materials, their service life can exceed that of general die steel. Aluminum and a variety of aluminum alloys have excellent ductility, can carry out a variety of plastic processing. The machinability of any kind of aluminum alloy is better than that of steel and pure aluminum, but the machinability of various wrought aluminum alloys is quite different from that of cast aluminum alloys. Aluminum and aluminum alloy are one of the most easily formed metal materials, but the allowable deformation of aluminum alloy is affected by its chemical composition, grade and heat treatment. Due to the low mechanical strength and work hardening rate, the formability of aluminum alloy is different from other metals.Aluminum plate is widely used in machinery manufacturing industry to manufacture wheels, pulleys, centrifuges, fans, crane and pump parts, pistons and engine cylinders, as well as aluminum plate stamping parts. This is due to the characteristics of aluminum and aluminum alloy, not only low density, but also have the required strength and hardness, which can reduce the energy consumption in mechanical operation, or greatly improve the operation speed under the condition of using the same energy, and also relatively prolong the service life of the parts. At the same time, after the weight and size of the whole machine are reduced, it is more suitable for production, transportation, installation and operation.