Title:
Manufacturing method of sintered machine parts and mixed powder used for this
Document Type and Number:
Japanese Patent JP6309215
Kind Code:
B2
Abstract:
A sintered compact having a density of 7.5 g/cm 3 or more is formed by mixed powder. The mixed powder is obtained by mixing graphite powder having an average particle diameter of 8 µm or less and diffusion alloyed steel powder. The ratio of the graphite powder is from 0.05 wt% to 0.35 wt% with respect to 100 wt% of the diffusion alloyed steel powder. Or, the mixed powder is obtained by mixing the graphite powder and completely alloyed steel powder. The ratio of the graphite powder is from 0.15 wt% to 0.35 wt% with respect to 100 wt% of the completely alloyed steel powder.
Inventors:
Okuno Takahiro
Naoki Yatsushiro
Akiya Ohira
Naoki Yatsushiro
Akiya Ohira
Application Number:
JP2013139080A
Publication Date:
April 11, 2018
Filing Date:
July 02, 2013
Export Citation:
Assignee:
ntn corporation
International Classes:
B22F1/105; B22F5/08; C22C33/02; C22C38/00; F16H53/02; F16H55/06
Domestic Patent References:
| JP2000355726A | ||||
| JP2008169460A | ||||
| JP9279204A | ||||
| JP9202934A | ||||
| JP48007967B1 | ||||
| JP2007537359A | ||||
| JP2097602A |
Foreign References:
| US20070292301 |
Attorney, Agent or Firm:
Kunihiko Shiromura
Tsuyoshi Kumano
Yusuke Noguchi
Tsuyoshi Kumano
Yusuke Noguchi
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