Title:
疲労特性に優れたコンロッドおよびその疲労特性向上方法
Document Type and Number:
Japanese Patent JP4374306
Kind Code:
B2
Abstract:
To provide a connecting rod having excellent fatigue characteristics and a method for improving fatigue strength thereof.
The connecting rod with excellent fatigue characteristics is composed of steel of ≥700 MPa tensile strength having a composition consisting of, by mass, 0.1 to 0.8% C, 0.05 to 2.5% Si, 0.2 to 3% Mn, 0.005 to 0.1% Al, 0.001 to 0.02% N and the balance Fe with inevitable impurities, and the residual compressive stress in the column surface layer of the connecting rod is 50 to 80% of the tensile strength of the steel. The method for improving the fatigue strength of the connecting rod is also provided.
COPYRIGHT: (C)2006,JPO&NCIPI
Inventors:
Takashi Fujita
Toshizo Tarui
Toshizo Tarui
Application Number:
JP2004295871A
Publication Date:
December 02, 2009
Filing Date:
October 08, 2004
Export Citation:
Assignee:
Nippon Steel Corporation
International Classes:
C22C38/00; C21D7/06; C22C38/06
Domestic Patent References:
| JP61262440A | ||||
| JP2003113418A | ||||
| JP2004169063A |
Attorney, Agent or Firm:
Etsuichi Matsumoto
Shiina Akira
Shiina Akira