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| In a forging process a hot metal is hammered into a final form. In closed dye forging the final shape is determined by the geometry of the dye. Waste material (flash) may need to be removed as the last step of the shaping process. This method is used for forming relatively small components that do not have re-entrant features. |  |
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| Large
shapes may be forged using the open dye method illustrated on the right
of the above diagram. The hot material may be translated and rotated between
the hammer and the dye surface to achieve the desired final shape.
Plastic flow of the deformed metal occurs in both of these forging processes. The oriented grain texture that this produces may be used to enhance the mechanical properties of the component. From: "Manufacturing with Materials," Edwards and Endean (Eds.), Butterworth (1990) |
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