公开(公告)号：US20150020926A1

公开(公告)日：2015-01-22

申请号：US14378553

申请日：2013-02-15

申请人： JFE Bars & Shapes Corporation ,  JFE Steel Corporation

发明人： Takashi Iwamoto ,  Keisuke Ando ,  Kunikazu Tomita ,  Yasuhiro Omori ,  Kiyoshi Uwai ,  Shinji Mitao

IPC分类号： C23C8/32 ,  C22C38/32 ,  C22C38/28 ,  C22C38/26 ,  C22C38/00 ,  C22C38/22 ,  C22C38/06 ,  C22C38/04 ,  C22C38/02 ,  C22C38/38 ,  C22C38/24

CPC分类号： C23C8/32 ,  C21D6/002 ,  C21D2211/002 ,  C22C38/001 ,  C22C38/002 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/22 ,  C22C38/24 ,  C22C38/26 ,  C22C38/28 ,  C22C38/32 ,  C22C38/38 ,  C22C38/60

摘要： According to the present invention, it is possible to obtain steel for nitrocarburizing having a predetermined chemical composition, a bainite area ratio exceeding 50% and excellent machinability by cutting before nitrocarburizing, and having strength and toughness equivalent to conventional steel, such as SCr420 carburized steel material, and excellent fatigue properties after nitrocarburizing.

摘要翻译： 根据本发明，可以获得具有预定化学组成，贝氏体面积率超过50％的氮碳共渗钢，并且在氮碳共渗之前通过切割获得优异的机械加工性，并且具有与常规钢相同的强度和韧性，例如SCr420渗碳钢 材料，并且在氮碳共渗之后具有优异的疲劳性能。

公开(公告)号：US10125416B2

公开(公告)日：2018-11-13

申请号：US14413549

申请日：2013-07-22

申请人： JFE STEEL CORPORATION ,  JFE Bars & Shapes Corporation

发明人： Yasuhiro Omori ,  Kiyoshi Uwai ,  Shinji Mitao ,  Takashi Iwamoto ,  Keisuke Ando ,  Kunikazu Tomita

IPC分类号： C23C8/32 ,  C21D8/06 ,  C21D9/32 ,  C21D1/06 ,  C22C38/00 ,  C22C38/60 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/22 ,  C22C38/24 ,  C22C38/26 ,  C22C38/28 ,  C22C38/38 ,  C21D6/00 ,  C21D8/00 ,  C23C8/04

摘要： The present invention provides a steel for nitrocarburizing having excellent mechanical workability before nitrocarburizing, and showing excellent fatigue properties after nitrocarburizing, which is suitable for applying in mechanical structural components for automobiles etc. prepared by adjusting the composition so that it contains in mass %, C: 0.01% or more and less than 0.10%, Si: 1.0% or less, Mn: 0.5% to 3.0%, P: 0.02% or less, S: 0.06% or less, Cr: 0.3% to 3.0%, Mo: 0.005% to 0.4%, V: 0.02% to 0.5%, Nb: 0.003% to 0.15%, Al: 0.005% to 0.2%, and Sb: 0.0005% to 0.02%, and the balance including Fe and incidental impurities, and setting the area ratio of bainite phase to the whole microstructure to more than 50%.

公开(公告)号：US20150159261A1

公开(公告)日：2015-06-11

申请号：US14413549

申请日：2013-07-22

申请人： JFE STEEL CORPORATION ,  JFE Bars & Shapes Corporation

发明人： Yasuhiro Omori ,  Kiyoshi Uwai ,  Shinji Mitao ,  Takashi Iwamoto ,  Keisuke Ando ,  Kunikazu Tomita

IPC分类号： C23C8/32 ,  C21D6/00 ,  C23C8/04 ,  C21D8/00

CPC分类号： C23C8/32 ,  C21D1/06 ,  C21D6/002 ,  C21D6/005 ,  C21D6/008 ,  C21D8/005 ,  C21D8/06 ,  C21D8/065 ,  C21D9/32 ,  C21D2211/002 ,  C21D2211/004 ,  C22C38/00 ,  C22C38/001 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/22 ,  C22C38/24 ,  C22C38/26 ,  C22C38/28 ,  C22C38/38 ,  C22C38/60 ,  C23C8/04

摘要： The present invention provides a steel for nitrocarburizing having excellent mechanical workability before nitrocarburizing, and showing excellent fatigue properties after nitrocarburizing, which is suitable for applying in mechanical structural components for automobiles etc. prepared by adjusting the composition so that it contains in mass %, C: 0.01% or more and less than 0.10%, Si: 1.0% or less, Mn: 0.5% to 3.0%, P: 0.02% or less, S: 0.06% or less, Cr: 0.3% to 3.0%, Mo: 0.005% to 0.4%, V: 0.02% to 0.5%, Nb: 0.003% to 0.15%, Al: 0.005% to 0.2%, and Sb: 0.0005% to 0.02%, and the balance including Fe and incidental impurities, and setting the area ratio of bainite phase to the whole microstructure to more than 50%.

摘要翻译： 本发明提供一种在氮碳共渗之前具有优异的机械加工性的氮碳共渗钢，并且在氮碳共渗之后表现出优异的疲劳特性，适用于通过调整组成使其以质量％计含有的C组成的汽车用机械结构部件 ：0.01％以上且小于0.10％，Si：1.0％以下，Mn：0.5％〜3.0％，P：0.02％以下，S：0.06％以下，Cr：0.3〜3.0％，Mo： 0.005〜0.4％，V：0.02〜0.5％，Nb：0.003〜0.15％，Al：0.005〜0.2％，Sb：0.0005〜0.02％，余量包括Fe和杂质， 贝氏体相与整个微观结构的面积比大于50％。