Currently in practice forging process design (mainly die) repeatedly carries out trial and error based skill experience of designer who is familiar with the forging problem. There are variety of processes that can be classified as forging such as open die, impression die, ring rolling, warm forging and cold forging. Initially forging operation has various advantages compared to other metal manufacturing including little loss of material, improved strength, geometrical precision of components and high production rates ( ). Cold forging can be described as a process in which a piece of metal is shaped to the desired form by plastic deformation of a simple starting form such as bar, billet, bloom or ingot at room temperature.
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