Title:
浸炭窒化部品および浸炭窒化部品の製造方法
Document Type and Number:
Japanese Patent JP6967337
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a carbonitrided component having a shape including an edge part and excellent in temper softening resistance and bending fatigue strength, and a method of manufacturing the same.SOLUTION: There is provided a carbonitrided component 100 which is excellent in bending fatigue strength and in which: a core part has a composition containing, by mass%, C:0.10 to 0.25%, Si:0.03 to 0.49% Mn:0.30 to 1.50%, P:0.030% or less, S:0.060% or less, Cr:0.90 to 3.00%, Al:0.100% or less and N:0.030% or less and the balance Fe with inevitable impurities; a flat part 3 has a particle boundary oxidation layer depth of 1 μm or less; a flat part surface area has carbon concentration of 0.70% to 0.89%, a nitrogen concentration of 0.20% to 0.70% and a deposit density of carbide and/or nitride of 0.5/μmor more; and edge part surface area has a maximum length of the deposit of carbide and/or nitride of 5.0 μm or less.SELECTED DRAWING: Figure 1
Inventors:
Shoji Todo
Takanori Iwahashi
Hideki Imataka
Hidekazu Sueno
Tetsuya Ohashi
Takanori Iwahashi
Hideki Imataka
Hidekazu Sueno
Tetsuya Ohashi
Application Number:
JP2016072945A
Publication Date:
November 17, 2021
Filing Date:
March 31, 2016
Export Citation:
Assignee:
Nippon Steel Corporation
International Classes:
C22C38/00; C21D1/06; C21D9/32; C22C38/60
Domestic Patent References:
| JP2010150566A |
Foreign References:
| WO2014034150A1 |
Attorney, Agent or Firm:
Sumio Tanai
Mitsuo Teramoto
Tomoo Katsumata
Hiroshi Yamaguchi
Mitsuo Teramoto
Tomoo Katsumata
Hiroshi Yamaguchi