Title:
CARBURIZED PART AND METHOD FOR MANUFACTURING SAME
Document Type and Number:
WIPO Patent Application WO/2020/202406
Kind Code:
A1
Abstract:
The present invention provides a method for obtaining a carburized part in which a steel with high Cr content is used and subjected to vacuum carburization treatment, thereby achieving a bending fatigue strength at an extremely high level. The carburized part is obtained by subjecting a steel with a predetermined composition to vacuum carburization treatment and then to quenching and tempering treatment, the vacuum carburization treatment having: a carburization period of 10-200 minutes at 850-1100°C; and a diffusion period of 15-300 minutes at 850-1100°C.
Inventors:
UMEHARA MIYURI (JP)
YAMASAKI SHINGO (JP)
YAMASAKI SHINGO (JP)
Application Number:
PCT/JP2019/014388
Publication Date:
October 08, 2020
Filing Date:
March 29, 2019
Export Citation:
Assignee:
NIPPON STEEL CORP (JP)
International Classes:
C22C38/00; C21D1/06; C22C38/60; C21D9/32
Domestic Patent References:
| WO2011132722A1 | 2011-10-27 |
Foreign References:
| JP2019007063A | 2019-01-17 | |||
| JP2017171970A | 2017-09-28 | |||
| JP2004238702A | 2004-08-26 | |||
| US20160304997A1 | 2016-10-20 | |||
| JP2018028130A | 2018-02-22 | |||
| JP2016191151A | 2016-11-10 | |||
| JP2009114488A | 2009-05-28 | |||
| JP2011006734A | 2011-01-13 |
Other References:
See also references of EP 3950993A4
Attorney, Agent or Firm:
AOKI, Atsushi et al. (JP)
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