New steels now in use for automotive rolling element bearings
Conference
·
OSTI ID:316174
- NTN Corp., Kuwana (Japan). Bearing Engineering R and D Center
- NTN Corp., Iwata (Japan). Automotive Products Engineering Dept.
With the development of clean steels, the influence of retained austenite on the rolling contact fatigue (RCF) life has changed. Under clean oil lubrication, the favorable influence of retained austenite disappeared, Utilizing th is phenomenon, a long life material for high temperature was developed with the use of the element Si which improves the heat resistance of steel. With the continuous casting becoming common steel making process, alloying elements should better be minimized because they cause segregation. From this point of view, a medium carbon through hardening steel which has competing RCF life with SUJ2 was developed. Under debris contaminated lubrication, retained austenite has ever favorable effect on RCF life. For these reasons, surface modification is important. Long life bearings under debris contaminated lubrication were developed by carbonitriding a through hardening steel or a carburizing steel, respectively.
- OSTI ID:
- 316174
- Report Number(s):
- CONF-9611259--; ISBN 0-8031-2421-X
- Country of Publication:
- United States
- Language:
- English
Similar Records
Case-hardening medium carbon steel for tough and long life bearing under severe lubrication conditions
Progress in through-hardening bearing steels: User`s experience
The isothermal diagram of transformation of the residual austenite by tempering
Conference
·
Wed Dec 30 23:00:00 EST 1998
·
OSTI ID:316175
Progress in through-hardening bearing steels: User`s experience
Conference
·
Wed Dec 30 23:00:00 EST 1998
·
OSTI ID:316172
The isothermal diagram of transformation of the residual austenite by tempering
Journal Article
·
Tue Nov 30 23:00:00 EST 1993
· Metallurgical Transactions, A
·
OSTI ID:142329