Title:
IRON-BASED POWDER MIXTURE FOR POWDER METALLURGY
Document Type and Number:
WIPO Patent Application WO/2005/087411
Kind Code:
A1
Abstract:
An iron-based powder mixture for powder metallurgy that excels in fluidity as powder, giving a green compact whose withdrawal from a metal mold is easier than in the prior art, the obtained green compact having a density stabilized and enhanced as compared with that of the prior art. Such an iron-based powder mixture can be produced by a process comprising adding a free lubricant to an iron-based powder and mixing them, wherein the free lubricant has a particle diameter of ≤200 μm and a crush strength, as measured with respect to particles of average diameter, of 0.2 to 2 MPa and wherein the free lubricant is contained in an amount of 0.1 to 1 part by mass per 100 parts by mass of iron-based powder.
Inventors:
ONO TOMOSHIGE (JP)
UNAMI SHIGERU (JP)
OZAKI YUKIKO (JP)
UENOSONO SATOSHI (JP)
UNAMI SHIGERU (JP)
OZAKI YUKIKO (JP)
UENOSONO SATOSHI (JP)
Application Number:
PCT/JP2005/004882
Publication Date:
September 22, 2005
Filing Date:
March 14, 2005
Export Citation:
Assignee:
JFE STEEL CORP (JP)
ONO TOMOSHIGE (JP)
UNAMI SHIGERU (JP)
OZAKI YUKIKO (JP)
UENOSONO SATOSHI (JP)
ONO TOMOSHIGE (JP)
UNAMI SHIGERU (JP)
OZAKI YUKIKO (JP)
UENOSONO SATOSHI (JP)
International Classes:
B22F1/10; B22F3/02; C10M105/14; C10M105/18; C10M105/24; C10M105/68; C10M107/32; C10M107/44; C10M171/06; C10M177/00; C22C33/02; (IPC1-7): B22F1/00; B22F3/02; C22C33/02; C10M105/14; C10M105/18; C10M105/24; C10M105/68; C10M107/32; C10M107/44; C10M171/06; C10M177/00
Foreign References:
| EP1364731A2 | 2003-11-26 | |||
| JPH11315302A | 1999-11-16 | |||
| JPH05148505A | 1993-06-15 | |||
| JP2004002964A | 2004-01-08 |
Attorney, Agent or Firm:
Ochiai, Kenichiro c/o Patent, Application Dept (JFE TECHNO-RESEARCH CORPORATION 1-2,
Marunouchi 1-chom, Chiyoda-ku Tokyo 05, JP)
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