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31. 发明专利

JP2008133530A Bearing steel component and its production method, and bearing 审中-公开
标题翻译：轴承钢组件及其生产方法和轴承
公开(公告)号：JP2008133530A
公开(公告)日：2008-06-12
申请号：JP2007244248
申请日：2007-09-20
申请人： Jfe Steel Kk , Jfeスチール株式会社
发明人： KUROSAWA NOBUTAKA , HAYASHI TORU , OMORI YASUHIRO , TOYOOKA TAKAAKI
IPC分类号： C22C38/00 , C21D8/06 , C21D9/40 , C22C38/04 , C22C38/60 , F16C33/32 , F16C33/34 , F16C33/62 , F16C33/64
摘要： PROBLEM TO BE SOLVED: To provide a bearing steel component having rolling fatigue strength more improved than before.
SOLUTION: A stock having a prescribed componential composition is subjected to: a hot working step where the total working ratio at 800 to 1,000°C is controlled to ≥80%; a cooling step where cooling is performed in the temperature of 700 to 500°C at a cooling rate of ≥0.2°C/s; and a secondary working step where ≥20% working is performed in the temperature range of 700 to
摘要翻译：要解决的问题：提供具有比以前更加改善的滚动疲劳强度的轴承钢部件。
解决方案：具有规定组成成分的原料经受：800〜1000℃的总加工率控制在≥80％的热加工工序; 在700〜500℃的温度下以≥0.2℃/ s的冷却速度进行冷却的冷却工序; 以及在冷却步骤之后在700〜800℃的温度范围内进行≥20％的加工的二次加工工序，或者在冷却工序后，在Al相变点以下的温度范围内进行≥20％的加工。随后，将至少一部分原料进行高频加热，其中升温速率≥400℃/ s，最终温度≤1,000℃，保持时间≤5s一次或多次。因此，获得的轴承钢部件的特征在于，淬火结构中的旧奥氏体晶粒的平均粒径为12μm以下，最大粒径为平均粒径的4倍以下。版权所有（C）2008，JPO＆INPIT

32. 发明专利

JP2007231348A Steel material having excellent fatigue property and its production method 审中-公开
标题翻译：具有优异的疲劳性能的钢材及其生产方法
公开(公告)号：JP2007231348A
公开(公告)日：2007-09-13
申请号：JP2006053542
申请日：2006-02-28
申请人： Jfe Steel Kk , Jfeスチール株式会社
发明人： KUROSAWA NOBUTAKA , OMORI YASUHIRO , HAYASHI TORU , KIMURA HIDETO , TOYOOKA TAKAAKI
IPC分类号： C22C38/00 , C21D1/10 , C21D8/00 , C21D9/28 , C22C38/60
CPC分类号： Y02P10/253
摘要： PROBLEM TO BE SOLVED: To stably provide a steel material having high fatigue strength. SOLUTION: The steel material has a composition comprising, by mass, 0.35 to 0.7% C, ≤1.1% Si, 0.1 to 2.0% Mn, ≤0.25% Al, 0.005 to 0.1% Ti, 0.05 to 0.6% Mo, 0.0003 to 0.006% B, ≤0.10% S, ≤0.03% P and ≤0.2% Cr, and the balance Fe with inevitable impurities, and its base material structure has a bainitic structure and/or a martensitic structure. Also, the total structural fraction of the bainitic structure and the martensitic structure is ≥10%, and further, regarding the old austenite grain boundaries in the hardened layer after induction hardening, the value of grain boundary ruggedness A obtained from the total value Le (μm) of grain boundary lengths and the total value L (μm) of the lengths of straight lines connecting the adjoining grain boundary triple junctions is controlled to a prescribed range. COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：稳定地提供具有高疲劳强度的钢材。钢材具有以质量计含有C：0.35〜0.7％，Si：0.1.1％，Mn：0.1〜2.0％，Al：0.005〜0.1％，Mo：0.05〜0.6％ 0.0003〜0.006％B，≤0.10％S，≤0.03％P和≤0.2％Cr，余量为Fe与不可避免的杂质，其基体结构具有贝氏体组织和/或马氏体组织。此外，贝氏体组织和马氏体组织的总结构分数≥10％，进一步地，对于淬火后的硬化层中的老奥氏体晶界，由总值Le（ μm）和连接相邻的晶界三重结的直线的长度的总值L（μm）被控制在规定的范围内。版权所有（C）2007，JPO＆INPIT

33. 发明专利

JP2007231341A Steel material having excellent fatigue property and its production method 审中-公开
标题翻译：具有优异的疲劳性能的钢材及其生产方法
公开(公告)号：JP2007231341A
公开(公告)日：2007-09-13
申请号：JP2006053006
申请日：2006-02-28
申请人： Jfe Steel Kk , Jfeスチール株式会社
发明人： KIMURA HIDETO , OMORI YASUHIRO , HAYASHI TORU , KUROSAWA NOBUTAKA , TOYOOKA TAKAAKI
IPC分类号： C22C38/00 , C21D1/10 , C21D9/28 , C22C38/60
CPC分类号： Y02P10/253
摘要： PROBLEM TO BE SOLVED: To stably provide a steel material having high fatigue strength. SOLUTION: The steel material has a composition comprising, by mass, 0.35 to 0.7% C, ≤1.1% Si, 0.1 to 2.0% Mn, ≤0.25% Al, 0.005 to 0.1% Ti, 0.05 to 0.6% Mo, 0.0003 to 0.006% B, ≤0.10% S, ≤0.03% P and ≤0.2% Cr, and the balance Fe with inevitable impurities, and its base metal structure has a bainitic structure and/or a martensitic structure. Also, the total structural fraction of the bainitic structure and the martensitic structure is ≥10%, further, regarding old austenite grain boundaries in a hardened layer after induction hardening, the average value of the frequencies for which the code of the curvature in each grain boundary changes at the parts other than grain boundary triple junctions per old austenite grain is ≥5, and the thickness of the hardened layer is ≥2 mm. COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：稳定地提供具有高疲劳强度的钢材。钢材具有以质量计含有C：0.35〜0.7％，Si：0.1.1％，Mn：0.1〜2.0％，Al：0.005〜0.1％，Mo：0.05〜0.6％ 0.0003〜0.006％B，≤0.10％S，≤0.03％P和≤0.2％Cr，余量为Fe与不可避免的杂质，其贱金属结构具有贝氏体组织和/或马氏体组织。此外，贝氏体组织和马氏体组织的总结构分数≥10％，此外，关于感应淬火后的硬化层中的旧的奥氏体晶界，每个晶粒的曲率代码的频率的平均值每个旧奥氏体晶粒以外的晶界三联结点的边界变化≥5，硬化层的厚度≥2mm。版权所有（C）2007，JPO＆INPIT

34. 发明专利

JP2005314753A Component for machine structure 审中-公开
标题翻译：机械结构部件
公开(公告)号：JP2005314753A
公开(公告)日：2005-11-10
申请号：JP2004134369
申请日：2004-04-28
申请人： Jfe Steel Kk , Jfeスチール株式会社
发明人： KUROSAWA NOBUTAKA , HAYASHI TORU , MATSUZAKI AKIHIRO , OMORI YASUHIRO , TOYOOKA TAKAAKI
IPC分类号： F16H55/06 , C21D9/00 , C21D9/30 , C22C38/00 , C22C38/06 , C22C38/60 , F16C3/02 , F16D3/20
摘要： PROBLEM TO BE SOLVED: To provide a component for a machine structure, which has more excellent delayed fracture resistance as well as fatigue strength than a conventional one.
SOLUTION: The component for the machine structure is at least partly quench-hardened, and has the hardened structure containing former austenite grains with the number of packets of 3 or less, at an area rate of 30% or higher.
COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：提供一种具有比常规的更好的延迟耐断裂性和疲劳强度的机器结构的部件。解决方案：用于机器结构的部件至少部分淬火硬化，并且具有包含3或更小数量的前奥氏体晶粒的硬化结构，面积率为30％或更高。版权所有（C）2006，JPO＆NCIPI

35. 发明专利

JP2005126818A Steel part having excellent fatigue property, and steel stock for induction hardening 有权
标题翻译：具有优异的疲劳性能的钢部件和用于感应硬化的钢件
公开(公告)号：JP2005126818A
公开(公告)日：2005-05-19
申请号：JP2004210476
申请日：2004-07-16
申请人： Jfe Steel Kk , Jfeスチール株式会社
发明人： YAMADA KATSUMI , KUROSAWA NOBUTAKA , HAYASHI TORU , OMORI YASUHIRO , MATSUZAKI AKIHIRO , TOYOOKA TAKAAKI
IPC分类号： F16C3/02 , C21D8/06 , C21D9/28 , C22C38/00 , C22C38/14 , C22C38/60
摘要： PROBLEM TO BE SOLVED: To provide a steel part which has satisfactory rotary bending fatigue strength after induction hardening.
SOLUTION: The steel part having a steel structure of bainite and/or martensite, and in which the total structural fraction of either bainite or martensite or both is ≥10 vol.%, further, Mo based precipitates are dispersed by ≥500 pieces per μm
3 , and the average grain diameter of the Mo based precipitates is ≤20 nm is subjected to induction hardening to obtain a hardened layer having an old austenite grain diameter of 7 μm or less.
COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：提供在感应淬火后具有令人满意的旋转弯曲疲劳强度的钢部件。解决方案：具有贝氏体和/或马氏体钢结构的钢部件，其中贝氏体或马氏体或两者的总结构分数≥10体积％，此外，Mo基析出物分散≥500 每μm 3 ，将Mo基析出物的平均粒径≤20nm进行感应淬火，得到老奥氏体晶粒直径为7μm以下的硬化层。版权所有（C）2005，JPO＆NCIPI

36. 发明专利

JP2005126817A Steel part for machine structure having excellent fatigue property and machinability, method for manufacture thereof, and stock for induction hardening 有权
标题翻译：具有优异的疲劳性能和机械性能的机械结构的钢件，其制造方法和用于感应硬化的
公开(公告)号：JP2005126817A
公开(公告)日：2005-05-19
申请号：JP2004210427
申请日：2004-07-16
申请人： Jfe Steel Kk , Jfeスチール株式会社
发明人： HAYASHI TORU , OMORI YASUHIRO , MATSUZAKI AKIHIRO , TOYOOKA TAKAAKI , YAMADA KATSUMI , KUROSAWA NOBUTAKA
IPC分类号： C21D8/00 , C22C38/00 , C22C38/14 , C22C38/60
摘要： PROBLEM TO BE SOLVED: To provide a steel part for a machine structure which exhibits excellent rotary bending fatigue strength while securing machinability.
SOLUTION: The steel part has a composition by mass% that C: 0.3 to 0.7%, Si: 0.3% or less, Mn: 0.2 to 2.0%, Al: 0.005 to 0.25%, Ti: 0.005 to 0.1%:, Mo: 0.05 to 0.6%, B: 0.0003 to 0.006%, S: 0.06% or less, P: 0.020% or less, O: 0.0030% or less and the balance: Fe and inevitable impurities, has a hardened layer formed by induction hardening at least on a part of the surface thereof, wherein the hardened layer has an average old austenite grain diameter of 7μm or less and it has non-metal inclusions comprising an oxide having a maximum diameter of 15μm or less.
COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：提供一种在确保机械加工性的同时表现出优异的旋转弯曲疲劳强度的机械结构的钢部件。钢部件的质量％为C：0.3〜0.7％，Si：0.3％以下，Mn：0.2〜2.0％，Al：0.005〜0.25％，Ti：0.005〜0.1％，Mo：0.05〜0.6％，B：0.0003〜0.006％，S：0.06％以下，P：0.020％以下，O：0.0030％以下，余量：Fe和不可避免的杂质，由至少在其一部分表面上进行感应淬火，其中硬化层的平均旧奥氏体晶粒直径为7μm以下，并且具有包含最大直径为15μm以下的氧化物的非金属夹杂物。版权所有（C）2005，JPO＆NCIPI

37. 发明专利

JP2005060730A Hub superior in sliding rolling fatigue life, and manufacturing method therefor 审中-公开
标题翻译：滑动滚动疲劳寿命中的HUB高级人员及其制造方法
公开(公告)号：JP2005060730A
公开(公告)日：2005-03-10
申请号：JP2003207126
申请日：2003-08-11
申请人： Jfe Steel Kk , Jfeスチール株式会社
发明人： MATSUZAKI AKIHIRO , OMORI YASUHIRO , HAYASHI TORU , TOYOOKA TAKAAKI
IPC分类号： F16C19/18 , C21D1/10 , C21D9/40 , C22C38/00 , C22C38/38 , C22C38/60 , F16C33/62
CPC分类号： F16C33/62 , F16C19/186 , F16C2204/64 , F16C2326/02
摘要： PROBLEM TO BE SOLVED: To provide a hub superior in the sliding rolling fatigue life.
SOLUTION: The hub having a surface-hardened layer on a peripheral surface to be engaged with a shank of a constant velocity joint of a hollow shaft portion of the hub has a steel structure comprising, by mass%, 0.35-0.7% C, 0.30-1.1% Si, 0.2-2.0% Mn, 0.005-0.25% Al, 0.005-0.1% Ti, 0.05-0.6% Mo, 0.0003-0.006% B, 0.06% or less S, 0.02% or less P, 0.2% or less Cr, and the balance Fe with unavoidable impurities; has a base metal structure having a bainite structure and/or a martensite structure, of which the total structure fraction is 10% or more; and has a former austenite grain size of 12 μm or less in the hardened layer by induction hardening through the whole thickness direction of the hardened layer.
COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：提供在滑动疲劳寿命中优越的轮毂。解决方案：具有与轮毂的中空轴部的等速万向接头的柄相接合的外周面上的表面硬化层的轮毂具有以质量％计含有0.35-0.7％ C，0.30-1.1％Si，0.2-2.0％Mn，0.005-0.25％Al，0.005-0.1％Ti，0.05-0.6％Mo，0.0003-0.006％B，0.06％以下S，0.02％以下P， 0.2％以下的Cr，余量为Fe的不可避免的杂质; 具有贝氏体结构和/或马氏体组织的贱金属结构，其总结构分数为10％以上; 并且通过在硬化层的整个厚度方向上的感应淬火，在硬化层中具有12μm以下的前奥氏体晶粒尺寸。版权所有（C）2005，JPO＆NCIPI

38. 发明专利

JP2005060726A Inner ring of constant velocity joint superior in fatigue characteristic, and manufacturing method therefor 有权
标题翻译：永久性速度联合高温疲劳特性的内圈及其制造方法
公开(公告)号：JP2005060726A
公开(公告)日：2005-03-10
申请号：JP2003206974
申请日：2003-08-08
申请人： Jfe Steel Kk , Jfeスチール株式会社
发明人： MATSUZAKI AKIHIRO , HAYASHI TORU , OMORI YASUHIRO , TOYOOKA TAKAAKI
IPC分类号： F16D3/20 , C21D1/10 , C21D9/40 , C22C38/00 , C22C38/38 , C22C38/60
CPC分类号： Y02P10/253
摘要： PROBLEM TO BE SOLVED: To stably provide an inner ring of a constant velocity joint having superior fatigue characteristics. SOLUTION: The inner ring of the constant velocity joint having a surface-hardened layer by induction-hardening on a mating face with a drive shaft, has a composition comprising 0.35-0.7 mass% C, 0.30-1.1 mass% Si, 0.2-2.0 mass% Mn, 0.005-0.25 mass% Al, 0.005-0.1 mass% Ti, 0.05-0.6 mass% Mo, 0.0003-0.006 mass% B, 0.06 mass% or less S, 0.02 mass% or less P, 0.2 mass% or less Cr and the balance Fe with unavoidable impurities; has a base metal structure having a bainite structure and/or a martensite structure, of which the total structure fraction is 10% or more; and has a former austenite grain size of 12 μm or less through the whole thickness direction of the surface-hardened layer by induction hardening. COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：稳定地提供具有优异的疲劳特性的等速万向节的内圈。解决方案：通过在与驱动轴的配合面上进行感应淬火而具有表面硬化层的等速万向节的内圈具有包含0.35-0.7质量％C，0.30-1.1质量％Si， 0.2-2.0质量％Mn，0.005-0.25质量％Al，0.005-0.1质量％Ti，0.05-0.6质量％Mo，0.0003-0.006质量％B，0.06质量％以下S，0.02质量％以下P，0.2 质量％以下的Cr和余量为Fe的不可避免的杂质; 具有贝氏体结构和/或马氏体组织的贱金属结构，其总结构分数为10％以上; 并且通过感应淬火在表面硬化层的整个厚度方向上具有12μm以下的前奥氏体晶粒尺寸。版权所有（C）2005，JPO＆NCIPI

39. 发明专利

JP2005060721A Steel material superior in delayed fracture resistance and fatigue characteristic, and manufacturing method therefor 有权
$Steel material superior in delayed fracture resistance and fatigue characteristic, and manufacturing method therefor$
标题翻译：延迟耐断裂和疲劳特性的钢材超高温及其制造方法
公开(公告)号：JP2005060721A
公开(公告)日：2005-03-10
申请号：JP2003206909
申请日：2003-08-08
申请人： Jfe Steel Kk , Jfeスチール株式会社
发明人： MATSUZAKI AKIHIRO , HAYASHI TORU , OMORI YASUHIRO , TOYOOKA TAKAAKI
IPC分类号： C21D8/00 , C21D6/00 , C21D9/28 , C22C38/00 , C22C38/32 , C22C38/58
摘要： PROBLEM TO BE SOLVED: To stably provide a steel material having a combination of high torsional fatigue strength and satisfactory delayed fracture resistance.
SOLUTION: The steel material has a composition comprising, by mass%, 0.35-0.7% C, 0.30-1.1% Si, 0.2-2.0% Mn, 0.005-0.25% Al, 0.05-0.6% Mo, 0.0003-0.006% B, 0.06 mass% or less S, 0.02% or less P, 0.2% or less Cr, one or two elements selected from 0.06-0.10% Ti and 0.25-0.50% V, and the balance Fe with unavoidable impurities; has a base metal structure containing at least a bainite structure and a martensite structure in an amount of 10 vol.% or more in total; and has a former austenite grain size of 5 μm or smaller in an induction-hardened layer through the whole thickness direction of the hardened layer.
COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：稳定地提供具有高扭转疲劳强度和令人满意的耐断裂性的组合的钢材。钢材具有以质量％计含有0.35-0.7％C，0.30-1.1％Si，0.2-2.0％Mn，0.005-0.25％Al，0.05-0.6％Mo，0.0003-0.006 ％B，0.06质量％以下S，0.02％以下P，0.2％以下Cr，一种或两种选自0.06-0.10％Ti和0.25-0.50％V的元素，余量为不可避免的杂质Fe; 具有总共含有10体积％以上的至少贝氏体组织和马氏体组织的贱金属结构体; 并且在硬化层的整个厚度方向上的感应硬化层中具有5μm以下的前奥氏体晶粒尺寸。版权所有（C）2005，JPO＆NCIPI

40. 发明专利

JP2007262469A Steel pipe and its production method 审中-公开
标题翻译：钢管及其生产方法
公开(公告)号：JP2007262469A
公开(公告)日：2007-10-11
申请号：JP2006087818
申请日：2006-03-28
申请人： Jfe Steel Kk , Jfeスチール株式会社
发明人： MATSUZAKI AKIHIRO , HAYASHI TORU , KUROSAWA NOBUTAKA , OMORI YASUHIRO , UEI SEISHI , TOYOOKA TAKAAKI
IPC分类号： C22C38/00 , B21B3/00 , B21C37/08 , C21D8/02 , C21D9/08 , C21D9/50 , C22C38/04 , C22C38/60
摘要： PROBLEM TO BE SOLVED: To provide a steel pipe whose fatigue strength is more improved than that of the conventional one.
SOLUTION: Regarding the steel pipe comprising, by mass, 0.3 to 0.1% C, ≤3.0% Si and 2.0% Mn, and the balance Fe with inevitable impurities, and in which at least a part is subjected to quenching, in the quenched structure, the average grain size of old austenitic grains is ≤12 μm, and also, the maximum grain size is ≤4 times the average grain size.
COPYRIGHT: (C)2008,JPO&INPIT

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