Title:
UPSET FORGING METHOD
Document Type and Number:
Japanese Patent JP2012240105
Kind Code:
A
Abstract:
To smoothly perform upset forging by suppressing an elongation amount caused by reduction by an anvil without impairing the efficiency of reduction by the anvil.
When the reduction of a forming blank 4 is carried out and an elongation amount L1 of the forming blank 4 after the reduction is large and the elongation amount L1 is out of a halfway specified range, the anvil 3 is rotated and the reduction by the anvil 3 is started, and reduction by the rotation of the anvil 3 is continued until the completion of upset forging. When the elongation amount L1 is within the halfway specified range, the reduction speed is changed, and the reduction of the forging blank 4 is carried out without rotating the anvil 3.
Inventors:
OTSUKI EIJI
NOZAKI TAKAHIKO
KAKIMOTO HIDEKI
FUJITA KAZUO
TAKEUCHI SHUNJIRO
TAKAMORI HIDEKI
NAGASAKA HIDEAKI
NAKADA YOSHIHIRO
NOZAKI TAKAHIKO
KAKIMOTO HIDEKI
FUJITA KAZUO
TAKEUCHI SHUNJIRO
TAKAMORI HIDEKI
NAGASAKA HIDEAKI
NAKADA YOSHIHIRO
Application Number:
JP2011114715A
Publication Date:
December 10, 2012
Filing Date:
May 23, 2011
Export Citation:
Assignee:
KOBE STEEL LTD
International Classes:
B21J9/06; B21J13/06
Domestic Patent References:
| JP2002210535A | 2002-07-30 | |||
| JPS6282140U | 1987-05-26 | |||
| JPH02205222A | 1990-08-15 |
Attorney, Agent or Firm:
Toshio Yasuda
Mikio Yasuda
Mikio Yasuda