Abstract: An axially non-symmetric article is forged by the first upsetting by means of the first and second punches and by the second die-lateral extruding of a metal bar stock which is extruded via an orifice into an extension space(s) which has a greater cross section than the orifice.
Type:
Grant
Filed:
November 12, 1993
Date of Patent:
December 19, 1995
Assignees:
The Japan Steel Works, Ltd., Nippon Bulge Industries, Ltd., Showa Denko K.K.