公开(公告)号：EP0787545A1

公开(公告)日：1997-08-06

申请号：EP97101280.2

申请日：1997-01-28

Applicant: REYNOLDS METALS COMPANY

Inventor： Kunka, James L. ,  Haulsee, Donald R.

IPC: B21D37/18

CPC classification number: B21D37/18 ,  B21D22/286

Abstract: A lubrication ring (300), for use in a fabrication press (10) having an assembly (20) with a main cavity (160) and a die nib (110) disposed on a surface of the cavity for ironing a workpiece passing through the cavity, includes a groove (360) surrounding a periphery of and opening into the main cavity of the assembly. At least one passage (350) is provided for introducing a fluid into the groove so as to flow within the groove. The fluid is introduced into the groove at a velocity which causes a centrifugal force exceeding the force of gravity to act on the fluid flowing in the groove.