发明申请
US20120060979A1 CARBURIZED STEEL PART HAVING EXCELLENT LOW CYCLE BENDING FATIGUE STRENGTH
审中-公开
具有优异的低周期弯曲疲劳强度的加固钢部件
- 专利标题： CARBURIZED STEEL PART HAVING EXCELLENT LOW CYCLE BENDING FATIGUE STRENGTH
- 专利标题（中）： 具有优异的低周期弯曲疲劳强度的加固钢部件
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申请号： US13139000申请日： 2010-11-11
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公开(公告)号： US20120060979A1公开(公告)日： 2012-03-15
- 发明人: Shuji Kozawa , Manabu Kubota , Osamu Kada , Motohiro Nishikawa , Takashi Tanaka , Norimasa Tsunekage
- 申请人： Shuji Kozawa , Manabu Kubota , Osamu Kada , Motohiro Nishikawa , Takashi Tanaka , Norimasa Tsunekage
- 优先权： JP2010-053555 20100310
- 国际申请： PCT/JP2010/070516 WO 20101111
- 主分类号： C22C38/02
- IPC分类号： C22C38/02 ; C22C38/06 ; C22C38/08 ; C22C38/14 ; C22C38/12 ; C22C38/16 ; C22C38/04 ; C22C38/38
摘要：
A carburized steel part having excellent low cycle bending fatigue strength which is comprised of a steel material which contains, by mass %, C: 0.1 to 0.6%, Si: 0.01 to 1.5%, Mn: 0.3 to 2.0, P: 0.02% or less, S: 0.001 to 0.15%, N: 0.001 to 0.03%, Al: 0.001 to 0.06%, and O: 0.005% or less and has a balance of substantially iron and unavoidable impurities and which is carburized and quenched, and then tempered, which steel part has a surface hardness of HV550 to HV800 and a core hardness of HV400 to HV500.
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