Title:
MIXED POWDER FOR POWDER METALLURGY, SINTERED BODY, AND METHOD FOR PRODUCING SINTERED BODY
Document Type and Number:
WIPO Patent Application WO/2018/143088
Kind Code:
A1
Abstract:
Provided is a mixed powder for powder metallurgy that has higher compressibility than partially diffusion-alloyed steel powder and that makes it possible to obtain high molding density. The mixed powder for powder metallurgy comprises an iron-based powder (a) containing 0-0.2 mass% of Si, 0-0.4 mass% of Mn, and a remainder of Fe and unavoidable impurities and an alloy steel powder (b) containing 0.3-4.5 mass% of Mo, 0-0.2 mass% of Si, 0-0.4 mass% of Mn, and a remainder of Fe and unavoidable impurities. The ratio of the alloy steel powder (b) to the total of the iron-based powder (a) and the alloy steel powder (b) is 50-90 mass%. The ratio of Mo to the total of the iron-based powder (a) and the alloy steel powder (b) is 0.20 mass% or more but less than 2.20 mass%.
Inventors:
KOBAYASHI AKIO (JP)
NAKAMURA NAOMICHI (JP)
NAKAMURA NAOMICHI (JP)
Application Number:
PCT/JP2018/002495
Publication Date:
August 09, 2018
Filing Date:
January 26, 2018
Export Citation:
Assignee:
JFE STEEL CORP (JP)
International Classes:
B22F1/00; C22C33/02; C22C38/00
Foreign References:
| JPS6479303A | 1989-03-24 | |||
| JP2016108651A | 2016-06-20 |
Attorney, Agent or Firm:
SUGIMURA Kenji (JP)
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