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1. 发明授权

US08961710B2 Carburized component and manufacturing method 有权
标题翻译：渗碳部件和制造方法
公开(公告)号：US08961710B2
公开(公告)日：2015-02-24
申请号：US13304733
申请日：2011-11-28
申请人： Yutaka Neishi , Takanari Hamada , Hidekazu Sueno , Yuji Kobayashi , Hideaki Sugiura
发明人： Yutaka Neishi , Takanari Hamada , Hidekazu Sueno , Yuji Kobayashi , Hideaki Sugiura
IPC分类号： C23C8/22 , C23C8/20 , C21D1/06 , C21D7/06 , C21D9/28 , C21D9/32 , C21D9/40 , C23C8/44 , C23C8/64 , C22C38/32
CPC分类号： C23C8/20 , C21D1/06 , C21D7/06 , C21D9/28 , C21D9/32 , C21D9/40 , C23C8/44 , C23C8/64
摘要： A carburized component with improved fatigue strength has a base steel containing, by mass %, C: 0.15-0.25%, Si: 0.03-0.50%, Mn: more than 0.60% and not more than 1.5%, P≦0.015%, S: 0.006-0.030%, Cr: 0.05-2.0%, Al≦0.10%, N≦0.03%, and O≦0.0020%, and optionally at least one element selected from Mo, Cu, Ni, B, Ti, Nb and V, the balance being Fe and impurities. A surface hardened layer portion satisfies: (a) average carbon concentration in the region from the outermost surface to a point of 0.2 mm depth of 0.35-0.60 mass %, (b) surface roughness Rz≦15 μm, and (c) σr(0)≦−800 MPa, σr(100)≦−800 MPa, and residual stress intensity index Ir≦80000, wherein Ir is calculated by [Ir=∫|σr(y)|dy], where y μm is the depth from the outermost surface and σr(y) is the residual stress for the points from the outermost surface to a depth of 100 μm with the range of y from 0 to 100 (μm).
摘要翻译：具有改善的疲劳强度的渗碳部件具有以质量％计含有C：0.15-0.25％，Si：0.03-0.50％，Mn：大于0.60％且不大于1.5％的基础钢，P＆lt; L; 0.015％，S ：0.006-0.030％，Cr：0.05-2.0％，Al＆lt; N1; 0.10％，N＆lt; NlE; 0.03％，O＆lt; E; 0.0020％，以及任选的至少一种选自Mo，Cu，Ni，B，Ti，Nb和V ，余量为Fe和杂质。表面硬化层部分满足：（a）从最外表面到0.2mm深度的区域的平均碳浓度为0.35-0.60质量％，（b）表面粗糙度Rz＆lt; ll;15μm，（c）＆sgr; r（0）＆nlE; -800MPa，＆sgr; r（100）＆nlE; -800MPa，残余应力强度指数Ir＆nlE; 80000，其中Ir由[Ir =∫|＆sgr; r（y）| dy] ，其中yμm是从最外表面的深度，并且r（y）是从最外表面到100μm深度的点的残余应力，y的范围为0至100（μm）。

2. 发明授权

US06277220B1 Steel wire rod and process for producing steel for steel wire rod 有权
标题翻译：钢丝杆
公开(公告)号：US06277220B1
公开(公告)日：2001-08-21
申请号：US09503713
申请日：2000-02-14
申请人： Takanari Hamada , Yusuke Nakano , Yukio Ishizaka
发明人： Takanari Hamada , Yusuke Nakano , Yukio Ishizaka
IPC分类号： C21D952
CPC分类号： C21C7/0075 , C21C7/06 , C22C38/00 , C22C38/02 , C22C38/04
摘要： The steel wire rod contains oxides which comprises, on the weight % basis, SiO2, 70% or more; CaO+Al2O3, less than 20%; and ZrO2, 0.1 to 10% in the average composition of oxides of 2 &mgr;m or more in width on a longitudinal section thereof. This wire rod is excellent in cold workability such as drawability, and steel wires which have high fatigue strength can be produced from this wire rod as stock steel.
摘要翻译：钢线材含有氧化物，其以重量％计含有70％以上的SiO 2， CaO + Al2O3，小于20％; 和ZrO 2，其纵向截面上的平均氧化物组成为0.1μm至10μm，宽度为2μm或更大。该线材的拉伸性等冷加工性优异，作为坯料钢可以从该线材制造具有高疲劳强度的钢丝。

3. 发明申请

US20120085465A1 CARBURIZED COMPONENT AND MANUFACTURING METHOD 有权
标题翻译：加固组件和制造方法
公开(公告)号：US20120085465A1
公开(公告)日：2012-04-12
申请号：US13304733
申请日：2011-11-28
申请人： Yutaka Neishi , Takanari Hamada , Hidekazu Sueno , Yuji Kobayashi , Hideaki Sugiura
发明人： Yutaka Neishi , Takanari Hamada , Hidekazu Sueno , Yuji Kobayashi , Hideaki Sugiura
IPC分类号： C23C8/22 , C22C38/32 , C22C38/22 , C22C38/44 , C22C38/20 , C22C38/02
CPC分类号： C23C8/20 , C21D1/06 , C21D7/06 , C21D9/28 , C21D9/32 , C21D9/40 , C23C8/44 , C23C8/64
摘要： A carburized component with improved fatigue strength has a base steel containing, by mass %, C: 0.15-0.25%, Si: 0.03-0.50%, Mn: more than 0.60% and not more than 1.5%, P≦0.015%, S: 0.006-0.030%, Cr: 0.05-2.0%, Al≦0.10%, N≦0.03%, and O≦0.0020%, and optionally at least one element selected from Mo, Cu, Ni, B, Ti, Nb and V, the balance being Fe and impurities. A surface hardened layer portion satisfies: (a) average carbon concentration in the region from the outermost surface to a point of 0.2 mm depth of 0.35-0.60 mass %, (b) surface roughness Rz≦15 μm, and (c) σr(0)≦-800 MPa, σr(100)≦-800 MPa, and residual stress intensity index Ir≦80000, wherein Ir is calculated by [Ir=∫|σr(y)|dy], where y μm is the depth from the outermost surface and σr(y) is the residual stress for the points from the outermost surface to a depth of 100 μm with the range of y from 0 to 100 (μm).
摘要翻译：具有改善的疲劳强度的渗碳部件具有以质量％计含有C：0.15-0.25％，Si：0.03-0.50％，Mn：大于0.60％且不大于1.5％的基础钢，P＆lt; L; 0.015％，S ：0.006-0.030％，Cr：0.05-2.0％，Al＆lt; N1; 0.10％，N＆lt; NlE; 0.03％，O＆lt; E; 0.0020％，以及任选的至少一种选自Mo，Cu，Ni，B，Ti，Nb和V ，余量为Fe和杂质。表面硬化层部分满足：（a）从最外表面到0.2mm深度的区域的平均碳浓度为0.35-0.60质量％，（b）表面粗糙度Rz＆lt; ll;15μm，（c）＆sgr; r（0）＆nlE; -800MPa，＆sgr; r（100）＆nlE; -800MPa，残余应力强度指数Ir＆nlE; 80000，其中Ir由[Ir =∫|＆sgr; r（y）| dy] ，其中yμm是从最外表面的深度，并且r（y）是从最外表面到100μm深度的点的残余应力，y的范围为0至100（μm）。

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