Metal deforming – By use of closed-die and coacting work-forcer – With stripping or ejecting from tool
Patent
1998-05-21
1999-09-21
Hail, III, Joseph J.
Metal deforming
By use of closed-die and coacting work-forcer
With stripping or ejecting from tool
72345, 723556, 72359, B21D 4504
Patent
active
059539500
ABSTRACT:
A method and an apparatus for producing a disc product having a plane carng a relief and helical ridges on the outer peripheral side. The inventive production method and the apparatus therefor have enabled a continuous processing of a material mass to forge into, produce and push out a disc product while retaining the quality of the relief plane, and thereby facilitating production of the disc product by die forging.
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Sakatani Fujio
Sasaoka Shinkichi
Tsuruga Shouichi
Yama Yoshinori
Hail III Joseph J.
Hong William
Japan, represented by Director-General, Mint Bureau, Ministry of
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