[Chinese aluminum industry network] processing enhancement is also called cold work hardening, that is, the metal material at the recrystallization temperature below the cold deformation processing such as forging, rolling, drawing, drawing, etc., cold deformation, the metal dislocation density increases, and Entangled with each other and form a cell structure, hinder dislocation movement. The greater the degree of deformation is, the more serious the dislocation tangles are, the greater the deformation resistance and the higher the strength. The degree of hardening after cold deformation varies with the degree of deformation, deformation temperature, and the nature of the material itself. When the same material is cold-deformed at the same temperature, the greater the degree of deformation, the higher the strength and the lower the plasticity. Solid solution strengthening aluminum plates add some alloying elements in pure aluminum to form infinite solid solution or limited solid solution, not only can obtain high strength, but also can obtain excellent plasticity and good pressure processing performance. The commonly used alloying elements for solid solution strengthening in general aluminum alloys are copper, magnesium, manganese, zinc, silicon, nickel and other elements. The general alloying of Al forms a limited solid solution, such as Al-Cu, Al-Mg, Al-Zn, Al-Si, Al-Mn, and other binary alloys all form limited solid solution, and all have large limits of solubility. Larger solid solution strengthening effect.