Title:
A manufacturing method of carburizing-and-quenching material
Document Type and Number:
Japanese Patent JP6010015
Kind Code:
B2
Abstract:
Provided is a pre-alloyed steel powder for a sintered body with high fatigue strength. The pre-alloyed steel powder contains at least one from the group consisting of 0.8-1.5% by mass of Mo, 0.5-1.4% by mass of Ni, and 0.5-1.1% by mass of Cr as alloy content and the Mo content [Mo], the Ni content [Ni], and the Cr content [Cr] satisfy the Mo/Ni/Cr balance relationship represented by expression (1). As a result of the foregoing, the steel powder can be used to obtain a sintered body with component rolling properties good enough to allow plastic deformation with low stress and can be used to obtain a carburized and quenched material that exhibits good fatigue strength after a heat treatment such as carburizing, quenching, and the like. Also provided is a carburized and quenched material that exhibits good fatigue strength even after carburizing, quenching, and tempering using such a pre-alloyed steel powder. 8.10 [Ni] + 3.71 [Mo] + 10.25 [Cr] ≤ 14.45 ... (1)
Inventors:
Yoshida Maki
Shinya Arima
Shinya Arima
Application Number:
JP2013262303A
Publication Date:
October 19, 2016
Filing Date:
December 19, 2013
Export Citation:
Assignee:
KABUSHIKI KAISHA KOBE SEIKO SHO
International Classes:
B22F1/00; B22F3/02; B22F3/10; B22F3/24; B22F5/08; C22C33/02; C22C38/00; C22C38/44
Domestic Patent References:
| JP2003013111A | ||||
| JP1123002A | ||||
| JP5287452A | ||||
| JP2025502A | ||||
| JP9059740A | ||||
| JP64073005A | ||||
| JP4337001A |
Attorney, Agent or Firm:
Kyuichi Ueki
Hisahiko Ueki
Tadashi Sugakawa
Hiroaki Ito
Hisahiko Ueki
Tadashi Sugakawa
Hiroaki Ito