Title:
RAW MATERIAL POWDER FOR WARM COMPACTION AND METHOD OF WARM COMPACTION
Document Type and Number:
WIPO Patent Application WO/2005/051577
Kind Code:
A1
Abstract:
[PROBLEMS] To provide a raw material powder for warm compaction which is excellent in fluidity at a high temperature and exhibits high lubricity and compressibility in pressure forming, and also exhibits high cost efficiency, and a method of warm compaction comprising using the material powder. [MEANS FOR SOLVING PROBLEMS] A method of warm compaction which comprises incorporating only a hydroxy-fatty acid salt having an average particle diameter of 5 to 100 μm in an amount of 0.3 to 2 mass %, preferably 0.5 to 2 mass %, to a raw material powder in powder metallurgy and subjecting the resultant mixture to a warm compaction, or comprises adhering a hydroxy-fatty acid salt having an average particle diameter of 50 μm or less to a mold, in advance, and then subjecting the material to warm compaction using the mold. As the hydroxy-fatty acid salt, lithium 12-hydroxystearate is suitably used.
Inventors:
NAKAI TAKASHI (JP)
KAWASE KINYA (JP)
KAWASE KINYA (JP)
Application Number:
PCT/JP2004/017383
Publication Date:
June 09, 2005
Filing Date:
November 24, 2004
Export Citation:
Assignee:
MITSUBISHI MATERIALS CORP (JP)
NAKAI TAKASHI (JP)
KAWASE KINYA (JP)
NAKAI TAKASHI (JP)
KAWASE KINYA (JP)
International Classes:
B30B11/00; B22F1/10; B22F3/02; B22F3/035; (IPC1-7): B22F3/02
Foreign References:
| JP2001342478A | 2001-12-14 | |||
| JPH10317001A | 1998-12-02 | |||
| JP2000290703A | 2000-10-17 |
Other References:
See also references of EP 1688199A4
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