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Forgings : Closed Die Forging

Forging is a metalworking process in which an impact device is used to deliver compressive force to areas of the metal in order to shape it. Forging was originally done manually with a hammer and anvil, however industrial forging machines now use hydraulics, compressed air, or other methods to drive mechanical hammers, or presses, into the surface. Closed die forging refers to a drop forging process in which the heated metal is placed into the tools, known as the die and punch. A large, heavy, mechanically-driven hammer is then ""dropped"" into the die, forcing the softened metal into the mold cavities of the die and punch. In closed die forging, hammer and die enclose the metal with the cavities when the hammer drops.

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