METHOD FOR PRODUCING HIGH DENSITY IRON-BASED COMPACTED BODY AND HIGH DENSITY IRON-BASED SINTERED BODY

WIPO Patent Application WO/2006/057434

A1

A method for producing an iron-based compacted body having a high density, which comprises pre-compacting an iron-based mixed powder prepared from an iron-based metal powder and a graphite powder and the like, pre-sintering the resulting pre-compacted body at a temperature of higher than 1000&ring C and not higher than 1300&ring C, to prepare an iron-based sintered preform containing 0.10 to 0.50 mass % of C, 0.3 mass % or less of O and 0.010 mass % or less of N and having a density of 7.2 Mg/m³ or more, and then subjecting the preform to a high velocity compaction with a compaction energy density of 1.8 MJ/m² or more (1.4 MJ/m² or more in terms of a pure iron system). The above method can be suitably used for producing an iron-based compacted body having a high density and thus an iron-based sintered body having a high density and a high strength with good productivity.

JPS6046348	MANUFACTURE OF ALLOY HAVING CRUDE ELONGATED CRYSTAL GRAIN STRUCTURE
WO/2021/123204	METHOD OF TREATING A MINING INSERT

UENOSONO SATOSHI (JP)
NAKAMURA NAOMICHI (JP)

PCT/JP2005/022041

June 01, 2006

November 24, 2005

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JFE STEEL CORP (JP)
UENOSONO SATOSHI (JP)
NAKAMURA NAOMICHI (JP)

B22F3/16; B22F3/02; B22F3/24; C22C38/00

JP2004504184A	2004-02-12
JPS462654A
JPS6152347A	1986-03-15

Ochiai, Kenichiro c/o Patent, Application Dept (JFE Techno-Research Corporation 7th Floor, Yanagiya Building, 1-10, Nihonbashi 2-chom, Chuo-ku Tokyo, JP)

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