Title:
HOT FORGINGS AND DIE FOR HOT FORGINGS
Document Type and Number:
Japanese Patent JP2004025275
Kind Code:
A
Abstract:
To provide hot forgings having a hole and formed of brass or the like at low cost in which hole-making is not forgotten.
A joint component 1 as hot forgings having a small hole 6 simultaneously formed with the hot forging in a flat part 5, and upper and lower dies for hot forging having a recessed part in a formed surface with a small projection protruded from the recessed part are obtained. In addition, the shape of the small projection is formed in a column having a draft. Roundness is formed at a root of the small projection.
Inventors:
UEMATSU JUNZO
Application Number:
JP2002188492A
Publication Date:
January 29, 2004
Filing Date:
June 27, 2002
Export Citation:
Assignee:
FUJI SEIMITSU KK
International Classes:
B21K23/04; B21J13/02; (IPC1-7): B21K23/04; B21J13/02
Attorney, Agent or Firm:
Hidehiko Okada
Tetsuo Fukuda
Tatsuhiko Inukai
Atsuko Nakamura
Tetsuo Fukuda
Tatsuhiko Inukai
Atsuko Nakamura
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