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Patent Searching and Data


Title:
SLIDING MEMBER AND MANUFACTURING METHOD THEREOF AND POWER STEERING DEVICE AND MANUFACTURING METHOD THEREOF
Document Type and Number:
WIPO Patent Application WO/2019/208549
Kind Code:
A1
Abstract:
The present invention addresses the problem of providing a sliding member less susceptible to decreased durability and having improved hardness and a manufacturing method thereof, and a power steering device and manufacturing method thereof. This power steering device has a sliding member (10a) characterized by containing a steel base material (3), granular iron carbide (2) contained in the base material, and metallic carbide (1) contained in the base material and containing metal and carbon as constituent elements, wherein the volume ratios of the iron carbide (2) and the metallic carbide (1) decrease along the depth direction from the surface of the base material toward the inside, and the metal is one or more selected from the group consisting of Ti, V, Nb, Ta, Zr, W, Hf, and Mo.

Inventors:
HATOU Hisamitsu (6-6, Marunouchi 1-chome, Chiyoda-k, Tokyo 80, 〒1008280, JP)
KOMURO Matahiro (6-6, Marunouchi 1-chome, Chiyoda-k, Tokyo 80, 〒1008280, JP)
SATSU Yuichi (6-6, Marunouchi 1-chome, Chiyoda-k, Tokyo 80, 〒1008280, JP)
SHIINO Kotaro (2520, Takaba, Hitachinaka-sh, Ibaraki 03, 〒3128503, JP)
NUMAKURA Koji (2520, Takaba, Hitachinaka-sh, Ibaraki 03, 〒3128503, JP)
TSUJIMI Shintaro (2520, Takaba, Hitachinaka-sh, Ibaraki 03, 〒3128503, JP)
Application Number:
JP2019/017164
Publication Date:
October 31, 2019
Filing Date:
April 23, 2019
Export Citation:
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Assignee:
HITACHI AUTOMOTIVE SYSTEMS, LTD. (2520, Takaba Hitachinaka-sh, Ibaraki 03, 〒3128503, JP)
International Classes:
C23C8/22; B62D5/04; C21D9/00; C22C38/00; C23C10/30; C23C28/00; F16H25/22; F16H25/24
Domestic Patent References:
WO2018088207A12018-05-17
Foreign References:
JP2006009145A2006-01-12
JP2005220367A2005-08-18
JP2005299719A2005-10-27
JPH0313585A1991-01-22
JPS61296976A1986-12-27
JP2010222648A2010-10-07
JP2016041830A2016-03-31
JP2008025010A2008-02-07
JPS57131357A1982-08-14
JPS63486A1988-01-05
Attorney, Agent or Firm:
POLAIRE I.P.C. (13-11, Nihonbashikayabacho 2-chome Chuo-k, Tokyo 25, 〒1030025, JP)
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