Forging is one of the main processing methods for providing blanks for mechanical parts in the machinery manufacturing industry. Through forging, not only can the shape of mechanical parts be obtained, but the internal structure of the metal can also be improved, and the mechanical and physical properties of the metal can be enhanced. Generally, important mechanical parts with high stress and high requirements are mostly manufactured by forging. For example, important parts such as turbine generator shafts, rotors, impellers, blades, retaining rings, large hydraulic press columns, high-pressure cylinders, rolling mill rolls, internal combustion engine crankshafts, connecting rods, gears, bearings, and artillery in the defense industry are all manufactured by forging. [7] Therefore, forging is widely used in metallurgy, mining, automobile, tractor, harvesting machinery, petroleum, chemical, aviation, aerospace, and weaponry industries. Even in daily life, forging plays an important role.
In a sense, the annual output of forgings, the proportion of die forgings in the total output of forgings, and the size and number of forging equipment reflect a country's industrial level to a certain extent.
