Title:
CRANKSHAFT AND MANUFACTURING METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2022/209568
Kind Code:
A1
Abstract:
The present invention provides a crankshaft having superior fatigue strength. A crankshaft 10 includes journals 11, pins 12, and fillets 14, wherein each fillet 14 has a residual stress distribution in which the residual stress in a region spanning from the surface to a position at least 300 μm deep is compressive residual stress, the maximum value of the compressive residual stress is 1,000 MPa or more, and the surface roughness Rz is less than 3.00 μm.
Inventors:
ABE TATSUHIKO (JP)
SUEYASU YOKO (JP)
SUEYASU YOKO (JP)
Application Number:
PCT/JP2022/009266
Publication Date:
October 06, 2022
Filing Date:
March 04, 2022
Export Citation:
Assignee:
NIPPON STEEL CORP (JP)
International Classes:
C21D7/04; C21D9/30; C22C38/00; C22C38/60; F16C3/08
Domestic Patent References:
| WO2015174088A1 | 2015-11-19 | |||
| WO2017119224A1 | 2017-07-13 |
Foreign References:
| JP2000337345A | 2000-12-05 | |||
| JPH10317062A | 1998-12-02 | |||
| JP2008127620A | 2008-06-05 |
Attorney, Agent or Firm:
UEBA, Hidetoshi et al. (JP)
Download PDF:
Previous Patent: ANISOTROPIC LIGHT-DIFFUSING FILM AND DISPLAY DEVICE
Next Patent: LUBRICATING OIL COMPOSITION
Next Patent: LUBRICATING OIL COMPOSITION