| 摘要 |
PROBLEM TO BE SOLVED: To provide a forward extrusion forging device and a forward extrusion forging method in which an outer periphery that is easily affected by shear friction force can be extruded uniformly as far as possible from the central part of a housing substance housed in a die and the die and, thus, a molding body in which distortion distribution is hardly generated inside can be manufactured in forward extrusion forging.SOLUTION: The forward extrusion forging device is a forward extrusion forging device 10 in which, in a die 1 including a hollow H, the diameter of the hollow H is reduced at the position on the way, and a workpiece W housed in the hollow H is extruded for forging to the front side of the hollow H by a punch 2 that is positioned behind the workpiece W and slides in the hollow H. The pushing-out surface 2' in the punch 2 for pushing out the workpiece W is concaved toward the central position in the opposite direction to the pushing-out direction. |
