Die assembly for extruding hollow metallic articles

摘要

The object of the present invention is to provide a die assembly of a compact structure adapted for simultaneously extruding two or more hollow metallic articles of a high precision in size and shape. A male die 2 has two apertures 15 in a bridge 13 of a core holder 6 and two cores 5 respectively inserted in the aperture 15, and a female die 3 has two bearing edges 21 to contour an outer periphery of a hollow article 'E'. When the male die 2 combines with the female die 3, a plurality of forming slots 22 are independently formed in one die assembly.