Title:
SINTERED BEARING AND METHOD FOR PRODUCING SINTERED BEARING
Document Type and Number:
WIPO Patent Application WO/2019/146770
Kind Code:
A1
Abstract:
[Problem] To improve the mechanical strength and vibration resistance of a sintered bearing and to prevent damage to the rotary shaft of the sintered bearing. [Solution] A sintered bearing 20 according to the present invention is formed of a sintered body that uses nickel silver (Cu-Ni-Zn) as a base material. In this sintered bearing 20, P is not added into the sintered body, or alternatively, the P content in the sintered body is less than 0.05% by mass in terms of the mass ratio to the total mass. Consequently, crystal grains constituting the sintered body can be miniaturized. Specifically, the average crystal grain size of the crystal grains that constitute the sintered body in this sintered bearing 20 is 20 μm or less. Consequently, it is possible to improve the mechanical strength and vibration resistance, while preventing damage to the rotary shaft.
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Inventors:
TANABE SHIGEYUKI (JP)
ASO SHINOBU (JP)
NARA HIROSHI (JP)
ASO SHINOBU (JP)
NARA HIROSHI (JP)
Application Number:
PCT/JP2019/002584
Publication Date:
August 01, 2019
Filing Date:
January 25, 2019
Export Citation:
Assignee:
PORITE CORP (JP)
International Classes:
C22C1/04
Foreign References:
| JP2013049887A | 2013-03-14 | |||
| JP2015187307A | 2015-10-29 | |||
| JP2015187307A | 2015-10-29 |
Attorney, Agent or Firm:
YOSHIMURA Koichi et al. (JP)
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