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Metal Piercing

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Piercing is a metal forging technique that is often performed as an auxiliary process in conjunction with other forging processes, in the manufacture of a part. It can be used to create a cavity or hole in the work piece. Piercing does not break through the metal's surface, like a drilling operation. Instead, the cavity is pressed into the work, hence it is a forging operation. Similar to other metal forging processes, piercing will change the properties of the work material, and affect the grain structure of the part. Often in manufacturing practice, more complex cavities can be further forged using side acting equipment attached to the punch.

Figure:190
Metal Piercing















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