Crankshaft And Manufacturing Method Therefor

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.

Patent Information

Application #

Filing Date

19 September 2023

Publication Number

37/2024

Publication Type

INA

Invention Field

MECHANICAL ENGINEERING

Status

Email

Parent Application

Applicants

NIPPON STEEL CORPORATION

6-1, Marunouchi 2-chome, Chiyoda-ku, Tokyo 1008071

Inventors

1. ABE, Tatsuhiko

c/o NIPPON STEEL CORPORATION, 6-1, Marunouchi 2-chome, Chiyoda-ku, Tokyo 1008071

2. SUEYASU, Yoko

c/o NIPPON STEEL CORPORATION, 6-1, Marunouchi 2-chome, Chiyoda-ku, Tokyo 1008071

Specification

Documents

Application Documents

#	Name	Date
1	202317062856-STATEMENT OF UNDERTAKING (FORM 3) [19-09-2023(online)].pdf	2023-09-19
2	202317062856-PROOF OF RIGHT [19-09-2023(online)].pdf	2023-09-19
3	202317062856-POWER OF AUTHORITY [19-09-2023(online)].pdf	2023-09-19
4	202317062856-NOTIFICATION OF INT. APPLN. NO. & FILING DATE (PCT-RO-105-PCT Pamphlet) [19-09-2023(online)].pdf	2023-09-19
5	202317062856-FORM 18 [19-09-2023(online)].pdf	2023-09-19
6	202317062856-FORM 1 [19-09-2023(online)].pdf	2023-09-19
7	202317062856-FIGURE OF ABSTRACT [19-09-2023(online)].pdf	2023-09-19
8	202317062856-DRAWINGS [19-09-2023(online)].pdf	2023-09-19
9	202317062856-DECLARATION OF INVENTORSHIP (FORM 5) [19-09-2023(online)].pdf	2023-09-19
10	202317062856-COMPLETE SPECIFICATION [19-09-2023(online)].pdf	2023-09-19
11	202317062856-FORM 3 [20-02-2024(online)].pdf	2024-02-20