Title:
DEVICE FOR HIGH-DENSITY MOLDING AND METHOD FOR HIGH-DENSITY MOLDING OF MIXED POWDER, AND HIGH-DENSITY THREE-LAYER-STRUCTURED POWDER COMPACT
Document Type and Number:
WIPO Patent Application WO/2013/161747
Kind Code:
A1
Abstract:
In the present invention, a first die (21D) is filled in the given order with: a first layer mixed powder (100F) that is a mixture of a basic metal powder and a low-melting-point lubricant powder and that has a small average particle size of the basic metal powder; a second layer mixed powder (100S) having a large average particle size of the basic metal powder; and a third layer mixed powder (100T) that has a small average particle size of the basic metal powder. A first applied pressure is applied to each layer mixed powder, molding an intermediate powder compact (110), the intermediate powder compact (110), which has been heated, is set in a second die (41D), and a second applied pressure is applied, thus molding a high-density three-layer-structured powder compact.
Inventors:
HASEGAWA KAZUHIRO (JP)
HIRAI YOSHIKI (JP)
HIRAI YOSHIKI (JP)
Application Number:
PCT/JP2013/061742
Publication Date:
October 31, 2013
Filing Date:
April 22, 2013
Export Citation:
Assignee:
AIDA ENG LTD (JP)
International Classes:
B22F3/02; B22F1/105; B22F3/03; B22F7/06; B30B11/02; H01F1/22; H01F41/02
Domestic Patent References:
| WO2012060452A1 | 2012-05-10 | |||
| WO2012077750A1 | 2012-06-14 |
Foreign References:
| JP2010251696A | 2010-11-04 | |||
| JPH11267893A | 1999-10-05 | |||
| JP2000087104A | 2000-03-28 | |||
| JP2011146681A | 2011-07-28 | |||
| JPH01219101A | 1989-09-01 | |||
| JP2009280908A | 2009-12-03 | |||
| JP2010037632A | 2010-02-18 | |||
| JPH02156002A | 1990-06-15 | |||
| JP2000087104A | 2000-03-28 | |||
| 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 2842664A4
See also references of EP 2842664A4
Attorney, Agent or Firm:
OFUCHI, Michie et al. (JP)
Obuchi Yoshikazu glory (JP)
Obuchi Yoshikazu glory (JP)
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