Title:
HIGH DENSITY MOLDING METHOD AND HIGH DENSITY MOLDING DEVICE FOR MIXED POWDER
Document Type and Number:
WIPO Patent Application WO/2012/060452
Kind Code:
A1
Abstract:
In the present invention, a first mold is filled with a mixed powder containing a lubricant, a first pressing force is applied to the mixed powder thus filled, thereby molding a mixed powder intermediate compressed body. The molded mixed powder intermediate compressed body is heated and the temperature of the mixed powder intermediate compressed body is quickly raised to a temperature corresponding to the melting point of the lubricant powder. The mixed powder intermediate compressed body thus heated is placed in a second mold that has been heated to a temperature corresponding to the melting point. At the second mold a second pressing force is applied to the mixed powder intermediate compressed body and a high density mixed powder finished compressed body is thereby molded.
Inventors:
HIRAI YOSHIKI (JP)
Application Number:
PCT/JP2011/075499
Publication Date:
May 10, 2012
Filing Date:
November 04, 2011
Export Citation:
Assignee:
AIDA ENG LTD (JP)
HIRAI YOSHIKI (JP)
HIRAI YOSHIKI (JP)
International Classes:
B22F3/02; B22F1/08; B22F1/10; B22F3/00; B22F3/03; H01F41/02
Foreign References:
| JP2002343657A | 2002-11-29 | |||
| JP2005079511A | 2005-03-24 | |||
| JP2009290024A | 2009-12-10 | |||
| JP2004100035A | 2004-04-02 | |||
| JPH10259403A | 1998-09-29 | |||
| JPH01219101A | 1989-09-01 | |||
| JP2009280908A | 2009-12-03 | |||
| JP2010037632A | 2010-02-18 | |||
| JPH02156002A | 1990-06-15 | |||
| JPH04231404A | 1992-08-20 | |||
| JP2001181701A | 2001-07-03 | |||
| JP2002343657A | 2002-11-29 |
Other References:
"Autumn Meeting of Japan Society of Powder and Powder Metallurgy", 2009, TOYOTA CENTRAL R & D LABS., INC.
See also references of EP 2636470A4
See also references of EP 2636470A4
Attorney, Agent or Firm:
OFUCHI, Michie et al. (JP)
Obuchi Yoshikazu glory (JP)
Obuchi Yoshikazu glory (JP)
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Claims: