Extrusion

The process of forcing metal to flow through a dieThe machined recess in a die that gives the forging its shape. orifice in the same direction in which energy is being applied (forward extrusionSee Extrusion.); or in the reverse direction (backward extrusionSee Extrusion.), in which case the metal usually follows the contour of the punch or moving forming tool. The extrusionThe process of forcing metal to flow through a die orifice in the same direction in which energy is being applied (forward extrusion); or in the reverse direction (backward extrusion), in which case the metal usually follows the contour of the punch or moving forming tool. The extrusion principle is used in many impression die forging applications.... More principle is used in many impression die forgingA forging that is formed to the required shape and size by machined impressions in specially prepared dies that exert three-dimensional control on the workpiece. applications.