Free forging is a kind of processing method which puts the heated metal blank on the forging equipment and between the iron in the lower part, and applies impact force or pressure to directly make the blank produce plastic deformation, so as to obtain the forging required. Free forging is suitable for the production of single piece, small batch and heavy forgings due to its simple shape and flexible operation. Free forging is divided into manual free forging and machine free forging. Manual free forging production efficiency is low, labor intensity is high, only used for repair or simple, small, small batch of forgings production, in modern industrial production, machine free forging has become the main method of forging production, in heavy machinery manufacturing, it has a particularly important role.
