Forging can eliminate the defects such as loose forging of metal forgings during smelting, and optimize the microstructure. At the same time, the mechanical properties of aluminum alloy forgings are generally better than those of castings made of the same material, because it preserves a complete metal streamline. Except for rolling plates, profiles or weldments, forgings are mainly used for important components with high mechanical load and severe working conditions.
Different forging methods have different processes, among which the hot die forging process is the longest. The general sequence is: forged steel billet, forged steel billet heating, roll forged steel billet, die forging forming, edge, punching, correction, intermediate inspection, forging size and surface defects, forging heat treatment, to eliminate forging stress and improve metal cutting performance; Cleaning, mainly to remove the surface oxidized skin; Correction; Check the appearance hardness of general forgings, and the important forgings pass chemical composition analysis, mechanical properties, residual stress and nondestructive testing.