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Title:
浸炭歯車用鋼、浸炭歯車及び浸炭歯車の製造方法
Document Type and Number:
Japanese Patent JP7368697
Kind Code:
B2
Abstract:
To provide steel for a carburized gear and a manufacturing method of a carburized gear that are able to manufacture a carburized gear excellent in strength against breaking caused by white-layer formation accompanying texture change in manufacturing a carburized gear by gas carburation hardening, and to provide a carburized gear excellent in strength against breaking caused by white-layer formation accompanying texture change.SOLUTION: Steel for a carburized gear is composed of C: 0.26-0.35%, Si: 0.40-1.00%, Mn: 0.20-0.60%, Cr: 1.00-3.00%, Mo: 0.01-0.50%, S: 0.001-0.050%, N: 0.004-0.030%, Al: 0.001-0.150%, Ca: 0.0001-0.0100%, O: 0.005% or less, P: 0.05% or less in mass%, and the balance: Fe and impurities.SELECTED DRAWING: None

Inventors:
Tatsuya Koyama
Satoshi Shiga
Yutaka Neishi
Application Number:
JP2019148143A
Publication Date:
October 25, 2023
Filing Date:
August 09, 2019
Export Citation:
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Assignee:
Nippon Steel Corporation
International Classes:
C22C38/00; C21D1/06; C21D9/32; C22C38/60
Domestic Patent References:
JP2009074110A
JP2008121075A
JP2002212672A
JP2006199993A
JP2010001527A
JP2016023346A
Foreign References:
WO2017209180A1
Attorney, Agent or Firm:
Patent Attorney Corporation Taiyo International Patent Office