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1. 发明专利

JP2008196592A Power transmission shaft 审中-公开
标题翻译：动力传动轴
公开(公告)号：JP2008196592A
公开(公告)日：2008-08-28
申请号：JP2007032298
申请日：2007-02-13
申请人： Jfe Steel Kk , Jfeスチール株式会社 , Ntn Corp , Ntn株式会社
发明人： MATSUBARA YUKIO , MORIMOTO HIROO , YOSHIDA KAZUHIKO , OMORI YASUHIRO , UEI SEISHI , TOYOOKA TAKAAKI
IPC分类号： F16D1/06 , C21D9/28 , C22C38/00 , C22C38/32 , F16C3/02
CPC分类号： F16D1/116 , C21D1/10 , C21D1/42 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/20 , C22C38/22 , C22C38/28 , C22C38/32 , F16C3/02 , F16D2001/103 , Y02P10/253
摘要： PROBLEM TO BE SOLVED: To enhance the fatigue strength of a material itself which forms a power transmission shaft besides enhancing the fatigue strength of a male spline portion by easing stress concentration of both tensile stress and shear stress in the male spline of a power transmission shaft. SOLUTION: A male spline portion Sm is formed in an outer periphery of a power transmission shaft. An enlarged diameter portion 21b gradually enlarging in the outer diameter toward the opposite shaft end side is arranged in a portion on the opposite shaft end side in a valley portion 21 of the male spline portion Sm. A sectionally arc-shaped rounded portion 21b1 is provided on both circumferential sides of the enlarged diameter portion 21b, and the curvature radius of the rounded portion 21b1 is gradually increased toward the opposite shaft end side. A material of the power transmission shaft is steel formed of predetermined components, wherein an average grain size of retained austenite in a surface layer of a hardened layer after induction hardening/annealing is 10 μm or smaller. COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：要解决的问题：为了提高形成动力传递轴的材料本身的疲劳强度，除了通过在一个公共花键的外花键中减轻拉伸应力和剪切应力两者的应力集中来提高阳花键部的疲劳强度之外，动力传动轴。解决方案：在动力传递轴的外周形成有一个外花键部分Sm。在外花键部分Sm的谷部21中，在相对的轴端侧的一部分上配置有朝向相反的轴端侧向外径逐渐扩大的扩径部21b。在扩径部21b的两个周向侧设置有截面圆弧状的圆弧部21b1，并且圆形部21b1的曲率半径朝向相反的轴端侧逐渐增大。动力传递轴的材料是由预定部件形成的钢，其中，淬火/退火后的硬化层的表层中的残余奥氏体的平均粒径为10μm以下。版权所有（C）2008，JPO＆INPIT

2. 发明专利

JP2007197772A Transmission shaft superior in torsion fatigue characteristic and manufacturing method therefor 有权
标题翻译：变速器扭矩特性及其制造方法的传动轴
公开(公告)号：JP2007197772A
公开(公告)日：2007-08-09
申请号：JP2006017924
申请日：2006-01-26
申请人： Jfe Steel Kk , Jfeスチール株式会社 , Ntn Corp , Ntn株式会社
发明人： IWAMOTO TAKASHI , TOMITA KUNIKAZU , KIMURA HIDETO , OMORI YASUHIRO , TOYOOKA TAKAAKI , YOSHIDA KAZUHIKO
IPC分类号： C22C38/00 , B21J5/00 , B21K1/14 , C21D1/10 , C21D8/06 , C21D9/28 , C22C38/06 , F16C3/02
CPC分类号： Y02P10/253
摘要： PROBLEM TO BE SOLVED: To provide a transmission shaft superior in torsion fatigue characteristics, which has machinability equal to or more excellent than that made from a conventional Pb-added free-cutting steel without necessarily containing a component for free cutting such as Pb and without deteriorating cold and hot forgeability, and besides, uses a machine-structure carbon steel superior in properties after having been nitrided at least in a part. SOLUTION: The transmission shaft has a constant-velocity universal joint in one end of a stub shaft. The stub shaft is made from a steel material which contains a graphite phase in an amount of 5 mass% of the C content or more when the stub shaft is formed, and makes remaining graphite particles and holes originating from graphite, which exist in a surface layer part after the stub shaft has been induction-hardened and tempered, controlled into circle-equivalent diameters of 7 μm or smaller. COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：提供一种扭转疲劳特性优异的传动轴，该传动轴的切削性等于或优于由常规的Pb添加自由切削钢制成的，而不必包含用于自由切削的部件，例如 Pb并且不劣化冷热锻造，此外，在至少部分被氮化后，使用性能优异的机械结构碳钢。
解决方案：传动轴在短轴的一端具有等速万向接头。短轴由钢材制成，该钢材含有当形成短截线轴时C含量以上5质量％以上的石墨相，并且由表面上存在的剩余石墨粒子和石墨构成的孔短截面轴已经感应淬火和回火，控制在7μm或更小的圆当量直径。版权所有（C）2007，JPO＆INPIT

3. 发明专利

JP2008144226A Constant-velocity universal joint excellent in rolling fatigue characteristic, and its manufacturing method 审中-公开
标题翻译：恒定速度通用联轴器在滚动疲劳特性中的优势及其制造方法
公开(公告)号：JP2008144226A
公开(公告)日：2008-06-26
申请号：JP2006332224
申请日：2006-12-08
申请人： Jfe Steel Kk , Jfeスチール株式会社 , Ntn Corp , Ntn株式会社
发明人： OMORI YASUHIRO , TOYOOKA TAKAAKI , IWAMOTO TAKASHI , KIMURA HIDETO , YOSHIDA KAZUHIKO
IPC分类号： C22C38/00 , C21D8/06 , C21D9/40 , C22C38/06 , F16D3/20 , F16D3/205 , F16D3/227
CPC分类号： Y02P10/212
摘要： PROBLEM TO BE SOLVED: To provide a constant-velocity universal joint excellent in rolling fatigue which uses a carbon steel for a machine structure having excellent machinability equal to or above that of the conventional Pb-added free cutting steel and further having excellent characteristics after nitriding. SOLUTION: In the constant-velocity universal joint provided with: an outer member 1 having a plurality of guide grooves in an inner circumference; an inner member 2 having a plurality of guide grooves in an outer circumference; torque transmission balls 3; and a holder 4, the outer member and the inner member are made from a steel which contains a graphite phase in an amount of 5% of the C content or more when the members are formed, and make remaining graphite particles and holes originating from graphite, which exist in a surface layer part after the members have been induction-hardened and tempered, controlled into circle-equivalent diameters of 7 μm or smaller. Further, the structure after the induction hardening and tempering is formed of a mixture of a martensite mother phase and either or both of a graphite phase and the holes originating from graphite, and the circumference of the graphite phase or holes originating from graphite is provided with a martensite phase having a C concentration higher than that in the martensite mother phase. COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：要解决的问题：为了提供一种使用碳钢作为机械结构优良的等速万向接头，其具有优良的机械加工性能等于或高于常规的无铅铅切割钢，并且还具有优异的氮化后的特点。解决方案：在等速万向接头中设置有：外部构件1，其在内周具有多个引导槽; 内部构件2，其在外周具有多个引导槽; 转矩传递球3; 和保持器4，外部构件和内部构件由形成有构件的C含量以上5％以上的石墨相的钢制成，并且形成剩余的石墨粒子和源自石墨的孔在构件被感应硬化和回火之后存在于表层部分中，被控制为7μm或更小的圆当量直径。此外，感应淬火和回火之后的结构由马氏体母相和石墨相和石墨中的一个或两个的混合物形成，并且石墨相的周围或源自石墨的孔被设置有具有比马氏体母相高的C浓度的马氏体相。版权所有（C）2008，JPO＆INPIT

4. 发明专利

JP2007177275A Power transmission shaft for constant-velocity universal joint 审中-公开
标题翻译：用于恒速通用接头的动力传动轴
公开(公告)号：JP2007177275A
公开(公告)日：2007-07-12
申请号：JP2005375472
申请日：2005-12-27
申请人： Jfe Steel Kk , Jfeスチール株式会社 , Ntn Corp , Ntn株式会社
发明人： OMORI YASUHIRO , KIMURA HIDETO , TOYOOKA TAKAAKI , YOSHIDA KAZUHIKO , MORIMOTO HIROO
IPC分类号： C22C38/00 , C21D1/18 , C21D9/28 , C22C38/32 , F16D3/20
CPC分类号： C21D9/28 , C21D1/25 , C21D1/42 , C21D2211/002 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/12 , C22C38/14 , C22C38/16 , F16D2001/103 , Y02P10/253
摘要： PROBLEM TO BE SOLVED: To stably provide a power transmission shaft which has all of high static-torsional strength, high torsional-fatigue strength and excellent hardening-cracking resistance. SOLUTION: The power transmission shaft for the constant-velocity universal joint, which has a groove for torque transmission in both ends thereof, has a composition comprising 0.40-0.50 mass% C, 0.35-0.8 mass% Si, 0.5-0.8 mass% Mn, 0.005-0.05 mass% Al, 0.005-0.05 mass% Ti, 0.3-0.5 mass% Mo, 0.0005-0.005 mass% B, 0.05-0.5 mass% Cu, 0.005-0.025 mass% S, 0.02 mass% or less P, 0.2 mass% or less Cr and the balance Fe with unavoidable impurities; has a metallurgical structure of the base metal including a bainitic structure of 50% or higher by structure fraction; has a quench-hardened layer after having been induction hardened, of which the surface layer includes a retained austenite with an average particle diameter of 10 μm or smaller; and has an effective depth of the quench-hardened layer, of which the ratio to a shaft radius, in other words, a quench-hardened layer ratio is 0.5 to 0.75 in the groove part and is 1.0 in the region except the groove part. COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：为了稳定地提供具有高静态抗扭强度，高扭转疲劳强度和优异的耐硬化开裂性的动力传递轴。解决方案：用于在其两端具有扭矩传递用槽的等速万向接头的动力传递轴具有包含0.40-0.50质量％C，0.35-0.8质量％Si，0.5-0.8的组成质量％Mn，0.005-0.05质量％Al，0.005-0.05质量％Ti，0.3-0.5质量％Mo，0.0005-0.005质量％B，0.05-0.5质量％Cu，0.005-0.025质量％S，0.02质量％或较少的P，0.2质量％以下的Cr和余量的Fe与不可避免的杂质; 具有基体金属的冶金结构，其包含结构分数为50％以上的贝氏体组织; 在感应淬火后具有淬火硬化层，其表面层包括平均粒径为10μm以下的残留奥氏体; 并且具有淬火硬化层的有效深度，其中轴半径的比率，换句话说，淬火层的比率在槽部分中为0.5至0.75，并且在凹槽部分之外的区域中为1.0。版权所有（C）2007，JPO＆INPIT

5. 发明专利

JP2007024273A Method of manufacturing bearing device for wheel 审中-公开
标题翻译：制造车轮轴承装置的方法
公开(公告)号：JP2007024273A
公开(公告)日：2007-02-01
申请号：JP2005210616
申请日：2005-07-20
申请人： Jfe Steel Kk , Jfeスチール株式会社 , Ntn Corp , Ntn株式会社
发明人： HIRAI ISAO , YOSHINO KOHEI , TAKUBO TAKAYASU , YOSHIDA KAZUHIKO , HASE KAZUKUNI , KIMURA HIDETO , UEI SEISHI , TOYOOKA TAKAAKI
IPC分类号： F16C33/64 , B21J1/06 , B21K1/05 , B60B27/00 , B60B27/02 , C21D9/40 , F16C19/18
CPC分类号： F16C33/62 , B21K1/40 , B60B27/00 , C21D1/02 , C21D1/19 , C21D9/40 , C21D2221/00 , F16C33/64 , F16C2326/02 , Y10T29/49492 , Y10T29/49496 , Y10T29/49497 , Y10T29/49643 , Y10T29/49657 , Y10T29/497
摘要： PROBLEM TO BE SOLVED: To improve strength and fatigue strength by refining texture and increasing hardness and to suppress the fall of productivity due to the increase of processes. SOLUTION: In this method of manufacturing a bearing device for a wheel, the bearing device has an inner member 1 and an outer member 2 rotatable to each other through double rows of rolling elements 3, wherein one of components constituting the inner member 1 and outer member 2, e.g., a hub 14, is a hot forged product of steel. A refrigerant is poured or cooling speed and temperature are controlled halfway or at the end of a hot forging process of the component such as the hub 14. A part of the component such as the hub 14 is thereby cooled to obtain a nonstandard texture portion 30 on the surface while having a base material portion of the component as standard texture. The nonstandard texture is either one of fine ferrite-pearlite texture, upper bainite texture, lower bainite texture and tempered martensite texture, or a mixed texture of at least two kinds out of these textures. COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：解决问题：通过精细化纹理和提高硬度来提高强度和疲劳强度，并且抑制由于工艺的增加而产生的生产率下降。解决方案：在这种制造车轮用轴承装置的方法中，轴承装置具有通过双列滚动元件3彼此旋转的内部构件1和外部构件2，其中构成内部构件的构件中的一个 1和外部构件2，例如轮毂14，是钢的热锻造产品。制冷剂被浇注或冷却速度和温度被控制在诸如轮毂14的部件的热锻造过程的中途或结束处。因此，诸如轮毂14的部件的一部分被冷却以获得非标准织构部分30 在表面上同时具有作为标准结构的部件的基材部分。非标准纹理是细铁素体 - 珠光体组织，上贝氏体组织，下贝氏体组织和回火马氏体组织之一，或这些纹理中至少两种的混合织构。版权所有（C）2007，JPO＆INPIT

6. 发明专利

JP2007263319A Sliding type constant velocity universal joint 审中-公开
标题翻译：滑动型恒定速度通用接头
公开(公告)号：JP2007263319A
公开(公告)日：2007-10-11
申请号：JP2006092111
申请日：2006-03-29
申请人： Jfe Steel Kk , Jfeスチール株式会社 , Ntn Corp , Ntn株式会社
发明人： UEI SEISHI , OMORI YASUHIRO , KIMURA HIDETO , TOYOOKA TAKAAKI , YOSHIDA KAZUHIKO , MATSUBARA YUKIO , MORIMOTO HIROO
IPC分类号： F16D3/20 , C21D1/10 , C21D8/00 , C21D9/40 , C22C38/00 , C22C38/16
CPC分类号： Y02P10/253
摘要： PROBLEM TO BE SOLVED: To provide a sliding type constant velocity universal joint with improved fatigue strength. SOLUTION: In this sliding type constant velocity universal joint, at least an outside member 51 has a composition containing: C: 0.45-0.55 mass%, Si: 0.05 mass% or less, Mn: 0.55-0.65 mass%, P: 0.020 mass% or less, S: 0.002-0.015 mass%, Mo: 0.35-0.45 mass%, Al: 0.02-0.05 mass%, Cu: 1.0 mass% or less, Ti: 0.015-0.030 mass%, and B: 0.0015-0.0030 mass%, with the remainder being Fe and unavoidable impurities. By a plurality of processings in a temperature range of 650 to 730°C, a base material composition on the outer peripheral side of a mouth part of the outside member 51 contains a bainite phase area ratio of 15-30%, and a recrystallized ferrite composition fraction of 10% or less. COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：要解决的问题：提供具有改善的疲劳强度的滑动式等速万向节。解决方案：在该滑动式等速万向接头中，至少外部构件51具有以下组成：C：0.45〜0.55质量％，Si：0.05质量％以下，Mn：0.55〜0.65质量％，P ：0.020质量％以下，S：0.002〜0.015质量％，Mo：0.35〜0.45质量％，Al：0.02〜0.05质量％，Cu：1.0质量％以下，Ti：0.015〜0.030质量％，B： 0.0015-0.0030质量％，其余为Fe和不可避免的杂质。通过在650〜730℃的温度范围内的多个处理，外部构件51的口部的外周侧的基材成分含有贝氏体相面积比率为15〜30％，再结晶铁素体组成分数为10％以下。版权所有（C）2008，JPO＆INPIT

7. 发明专利

JP2007197771A Constant-velocity universal joint excellent in rolling fatigue characteristic, and manufacturing method therefor 有权
标题翻译：恒定速度通用联轴器在滚动疲劳特性方面优于其制造方法
公开(公告)号：JP2007197771A
公开(公告)日：2007-08-09
申请号：JP2006017826
申请日：2006-01-26
申请人： Jfe Steel Kk , Jfeスチール株式会社 , Ntn Corp , Ntn株式会社
发明人： IWAMOTO TAKASHI , TOMITA KUNIKAZU , KIMURA HIDETO , OMORI YASUHIRO , TOYOOKA TAKAAKI , YOSHIDA KAZUHIKO
IPC分类号： C22C38/00 , C21D1/10 , C21D6/00 , C21D8/00 , C21D9/40 , C22C38/06 , F16D3/205 , F16D3/2237
CPC分类号： Y02P10/253
摘要： PROBLEM TO BE SOLVED: To provide a constant-velocity universal joint excellent in rolling fatigue characteristics, which has machinability equal to or more excellent than that made from a conventional Pb-added free-cutting steel without necessarily containing a free-cutting constituent such as Pb and without deteriorating cold and hot forgeability, and besides, uses a machine-structure carbon steel superior in properties after having been nitrided at least in a part.
SOLUTION: The constant-velocity universal joint is provided with an outer member having a plurality of guide grooves in an inner circumference, an inner member having a plurality of guide grooves in an outer circumference, torque transmission balls arranged in a plurality of ball tracks respectively which are formed in the guide grooves of the outer member and the inner member, and a holder for holding these torque transmission balls. The outer member and the inner member are made from a steel material which contains a graphite phase in an amount of 5 mass% of the C content or more when the members are formed, and make remaining graphite particles and holes originating from graphite, which exist in an surface layer part after the members have been induction-hardened and tempered, controlled into circle-equivalent diameters of 7 μm or smaller.
COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：为了提供一种具有优异的轧制疲劳特性的等速万向接头，其切削性等于或优于常规的Pb添加自由切削钢制成的，而不必包含自由切削 Pb等成分，没有劣化的热和热锻造性，而且至少在一部分被氮化后，使用性能优异的机械结构碳钢。解决方案：等速万向接头设置有在内周具有多个引导槽的外部构件，在外周具有多个引导槽的内部构件，设置在多个引导槽中的扭矩传递滚珠球形轨道分别形成在外部构件和内部构件的引导槽中，以及保持器，用于保持这些扭矩传递球。外部构件和内部构件由形成有构件的C含量以上的5质量％以上的石墨相的钢材制成，并且使剩余的石墨颗粒和源自石墨的空穴存在在构件被感应硬化和回火之后的表面层部分中，被控制为7μm或更小的圆当量直径。版权所有（C）2007，JPO＆INPIT

8. 发明专利

JP2008266736A Structural component excellent in impact strength property 审中-公开
标题翻译：结构强度优良的结构构件
公开(公告)号：JP2008266736A
公开(公告)日：2008-11-06
申请号：JP2007112172
申请日：2007-04-20
申请人： Jfe Steel Kk , Jfeスチール株式会社
发明人： UEI SEISHI , KIMURA HIDETO , TOYOOKA TAKAAKI
IPC分类号： C22C38/00 , C21D8/06 , C22C38/16
摘要： PROBLEM TO BE SOLVED: To propose a structural component having an excellent impact strength property.
SOLUTION: A steel raw material composed of a composition containing 0.40 to 0.50 mass% C, ≤0.05 mass% Si, 0.50 to 1.2 mass% Mn, ≤0.20 mass% P, 0.002 to 0.008 mass% S, 0.30 to 0.50 mass% Mo, 0.02 to 0.05 mass% Al, ≤1.0 mass% Cu, 0.015 to 0.030 mass% Ti, and 0.0015 to 0.0030 mass% B, and the balance Fe and inevitable impurities is heated to a temperature area of 900 to 1,050°C and is then subjected to bar steel rolling at a finishing temperature of ≥880°C to produce the bar steel with 15 to 30% of an area rate of a bainite phase. The bar steel is molded to a desired shape by forging in a temperature area including ordinary temperature and is thereafter subjected to induction hardening.
COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：要解决的问题：提出具有优异冲击强度性能的结构部件。解决方案：由含有0.40〜0.50质量％C，≤0.05质量％Si，0.50〜1.2质量％Mn，≤0.20质量％P，0.002〜0.008质量％S，0.30〜0.50的组成的钢原料质量％Mo，0.02〜0.05质量％Al，≤1.0质量％Cu，0.015〜0.030质量％Ti和0.0015〜0.0030质量％B，余量为Fe和不可避免的杂质加热到900〜1050度的温度区域然后在≥880℃的终轧温度下进行钢坯轧制，制造出贝氏体相的面积率为15〜30％的钢坯。通过在包括常温的温度区域中锻造，将钢筋模制成所需的形状，然后进行感应淬火。版权所有（C）2009，JPO＆INPIT

9. 发明专利

JP2008202136A Steel component for bearing, and method for producing the same 审中-公开
标题翻译：用于轴承的钢构件及其制造方法
公开(公告)号：JP2008202136A
公开(公告)日：2008-09-04
申请号：JP2007042772
申请日：2007-02-22
申请人： Jfe Steel Kk , Jfeスチール株式会社
发明人： TOMITA KUNIKAZU , HIRAI YASUMASA , TOYOOKA TAKAAKI
IPC分类号： C22C38/00 , C21D6/00 , C21D9/40 , C22C38/18
摘要： PROBLEM TO BE SOLVED: To provide a steel component for a bearing having a rolling fatigue life and strength more excellent than those of the conventional one.
SOLUTION: The steel component has a componential composition comprising, by mass, 0.60 to 1.50% C, 0.1 to 1.0% Si, 0.1 to 1.5% Mn and 0.1 to 2.0% Cr, and the balance Fe with inevitable impurities, and whose structure before quenching heat treatment is composed of bainite and spherical carbides, and in which the average size of old austenite grains in the surface layer part of the hardened layer after the quenching is ≤4.0 μm.
COPYRIGHT: (C)2008,JPO&INPIT

10. 发明专利

JP2008202068A Component for machine structure 审中-公开
标题翻译：机械结构部件
公开(公告)号：JP2008202068A
公开(公告)日：2008-09-04
申请号：JP2007036743
申请日：2007-02-16
申请人： Jfe Steel Kk , Jfeスチール株式会社 , Nissan Motor Co Ltd , 日産自動車株式会社
发明人： KUROSAWA NOBUTAKA , KIMURA HIDETO , TOYOOKA TAKAAKI , KOGANEZAWA TAIICHI , HAYASHI TAKAO , OKADA YOSHIO
IPC分类号： C22C38/00 , C21D1/10 , C21D1/18 , C21D9/28 , C22C38/60 , F16C3/02
CPC分类号： Y02P10/253
摘要： PROBLEM TO BE SOLVED: To provide a component for a machine structure, which has a more excellent torsion-fatigue strength than a conventional one, is represented by an input shaft and an output shaft, and has a vertical hole. SOLUTION: The component for the machine structure is a hollow bar-shaped component 2 that has a vertical hole 3 which penetrates through an outer wall surrounding a hollow center 1 and communicates with the hollow center 1, and that has a hardened layer 4 formed therein which spreads with a diameter L that is 3 times of the diameter of the vertical hole or larger around the vertical hole 3. The hardened layer has a structure formed of former austenite crystal grains with a grain size of 10 μm or smaller, and has the surface layer of which the compressive residual stress is 1,000 MPa or more. COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：要解决的问题：为了提供一种具有比传统的扭转疲劳强度更优异的机器结构的部件，由输入轴和输出轴表示，并且具有垂直孔。解决方案：机器结构的部件是中空的棒状部件2，其具有垂直孔3，该垂直孔3穿过围绕中空中心1的外壁并与中空中心1连通，并且具有硬化层 4，其直径L为垂直孔的直径的3倍或更大的垂直孔3。该硬化层具有由以下的奥氏体晶粒形成的结构：粒径为10μm以下的奥氏体晶体，并且其表面层的压缩残余应力为1000MPa以上。版权所有（C）2008，JPO＆INPIT

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