Title:
METHOD FOR EVALUATING AND TESTING HYDROGEN EMBRITTLEMENT SEPARATION OF ROLLING BEARING
Document Type and Number:
WIPO Patent Application WO/2021/065811
Kind Code:
A1
Abstract:
This method for evaluating and testing hydrogen embrittlement separation comprises: a step for preparing a rolling bearing (10) having a first raceway ring (11) that is a rotating ring including a first raceway surface (11da), a second raceway ring (12) that is a static ring including a second raceway surface (12ca) that faces the first raceway surface, and rolling elements (13) positioned between the first raceway surface and the second raceway surface; and a step for applying, to the first raceway ring, rotation about a center axis (A1) in a state in which a load is applied via the rolling elements between the first raceway surface and the second raceway surface. The first raceway ring, the second raceway ring, and the rolling elements are formed from steel. The first raceway surface and the second raceway surface are constantly immersed in a lubricant across the entire surfaces thereof during rotation. The lubricant contains substantially no water.
Inventors:
SASAKI KATSUAKI (JP)
YAMAGUCHI TOORU (JP)
YAMAGUCHI TOORU (JP)
Application Number:
PCT/JP2020/036663
Publication Date:
April 08, 2021
Filing Date:
September 28, 2020
Export Citation:
Assignee:
NTN TOYO BEARING CO LTD (JP)
International Classes:
G01M13/04
Foreign References:
| JP2012181167A | 2012-09-20 | |||
| JPH09264816A | 1997-10-07 | |||
| JP2015068749A | 2015-04-13 | |||
| JP2012181167A | 2012-09-20 |
Other References:
KINO, NOBUO ET AL.: "Structure and properties of the material - Influence of Hydrogen on Rolling Contact Fatigue Life and Its Improvement", CURRENT ADVANCES IN MATERIALS AND PROCESSES, vol. 15, 30 November 2001 (2001-11-30), JP , pages 1016 - 1019, XP009535432, ISSN: 0914-6628
KINAMI, TOSHIYA: "Effect of Hydrogen on Rolling Contact Fatigue Phenomena due to Hydrogen Embrittlement", DENKI SEIKO , vol. 84, no. 1, 30 November 2012 (2012-11-30), JP , pages 55 - 60, XP009535431, ISSN: 0011-8389
HIROSHI HAMADA ET AL.: "The Influence of Hydrogen on Tension-Compression and Rolling Contact Fatigue Properties of Bearing Steel", NTN TECHNICAL REVIEW, no. 74, 2006, pages 50
MIKA KOHARA ET AL.: "Study on Mechanism of Hydrogen Generation from Lubricants", TRIBOLOGY TRANSACTIONS, no. 49, 2006, pages 53
KINAMI, TOSHIYA: "Effect of Hydrogen on Rolling Contact Fatigue Phenomena due to Hydrogen Embrittlement", DENKI SEIKO , vol. 84, no. 1, 30 November 2012 (2012-11-30), JP , pages 55 - 60, XP009535431, ISSN: 0011-8389
HIROSHI HAMADA ET AL.: "The Influence of Hydrogen on Tension-Compression and Rolling Contact Fatigue Properties of Bearing Steel", NTN TECHNICAL REVIEW, no. 74, 2006, pages 50
MIKA KOHARA ET AL.: "Study on Mechanism of Hydrogen Generation from Lubricants", TRIBOLOGY TRANSACTIONS, no. 49, 2006, pages 53
Attorney, Agent or Firm:
FUKAMI PATENT OFFICE, P.C. (JP)
Download PDF: