Title:
ROLLING COMPONENT AND ROLLING BEARING
Document Type and Number:
WIPO Patent Application WO/2023/058518
Kind Code:
A1
Abstract:
A rolling component (10) has surfaces (10a, 10b, 10c, 10d) and is made of steel. The rolling component includes a surface layer section (50), which is a region extending from the surface down to a depth of 20 μm. The steel contains 0.70-1.10 mass% of carbon; 0.15-0.35 mass% of silicon; 0.30-0.60 mass% of manganese; 1.30-1.60 mass% of chromium; 0.01-0.50 mass% of molybdenum; 0.01-0.50 mass% of vanadium; and with the balance being iron and unavoidable impurities. The nitrogen concentration in the steel in the surface layer section is at least 0.2 mass%.
Inventors:
YAMADA MASAHIRO (JP)
SATO MIYU (JP)
MIWA NORIAKI (JP)
MIZUTA KOHEI (JP)
OHKI CHIKARA (JP)
SATO MIYU (JP)
MIWA NORIAKI (JP)
MIZUTA KOHEI (JP)
OHKI CHIKARA (JP)
Application Number:
PCT/JP2022/036158
Publication Date:
April 13, 2023
Filing Date:
September 28, 2022
Export Citation:
Assignee:
NTN TOYO BEARING CO LTD (JP)
International Classes:
C22C38/00; C22C38/24; F16C19/06; F16C33/32; F16C33/62; C21D1/06; C21D9/40
Foreign References:
| JP2006131986A | 2006-05-25 | |||
| JP2005308083A | 2005-11-04 | |||
| JP2007100126A | 2007-04-19 | |||
| JP2020125796A | 2020-08-20 | |||
| JP2013177666A | 2013-09-09 | |||
| JP2013112861A | 2013-06-10 | |||
| JP2019108576A | 2019-07-04 | |||
| US20180202030A1 | 2018-07-19 | |||
| JP3990212B2 | 2007-10-10 | |||
| JP2000234145A | 2000-08-29 |
Attorney, Agent or Firm:
FUKAMI PATENT OFFICE, P.C. (JP)
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