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1. 发明申请

US20070113698A1 Steel bar for steering rack manufacturing method of the same, and steering rack usnig the same 有权
标题翻译：钢筋的转向架制造方法相同，转向架也相同
公开(公告)号：US20070113698A1
公开(公告)日：2007-05-24
申请号：US10558359
申请日：2004-05-27
申请人： Atsuhiko Ohta , Makoto Kamei , Kazuhiro Watanabe , Yukinori Kanaike , Osamu Tsukamoto , Masakazu Ikeda , Gorou Anan , Hiroshi Itoziri
发明人： Atsuhiko Ohta , Makoto Kamei , Kazuhiro Watanabe , Yukinori Kanaike , Osamu Tsukamoto , Masakazu Ikeda , Gorou Anan , Hiroshi Itoziri
IPC分类号： F16H1/04
CPC分类号： C22C38/02 , B62D3/126 , C21D1/18 , C21D9/32 , C21D2211/002 , C21D2211/008 , C21D2211/009 , C22C38/04 , C22C38/06 , C22C38/14 , Y10T74/1967
摘要： A steel bar for a steering rack that contains 0.50 to 0.60% by mass of C, 0.05 to 0.5% by mass of Si, 0.2 to 1.5% by mass of Mn, 0.0005 to 0.003% by mass of B, 0.005 to 0.05% by mass of Ti, 0.0005 to 0.1% by mass of Al, and 0.002 to 0.02% by mass of N is provided. Given D as a diameter of the steel bar, then the steel bar is adjusted in such a manner that quenched and tempered structures in a portion of the steel bar at a depth of D/4 from a surface satisfy conditions I), II), and III) as follows: I) a sum of a tempered bainitic structure and a tempered martensitic structure accounts for 30 to 100% in area percentage; II) a regenerated perlite structure accounts for 0 to 50% in area percentage; and III) a sum of the tempered bainitic structure, the tempered martensitic structure, and the regenerated perlite structure accounts for 50 to 100% in area percentage.
摘要翻译：用于转向架的钢棒，其含有C：0.05〜0.60质量％，Si：0.05〜0.5质量％，Mn：0.2〜1.5质量％，B：0.0005〜0.003质量％，0.005〜0.05质量％提供Ti的质量，Al：0.0005〜0.1质量％，N：0.002〜0.02质量％。给定D作为钢筋的直径，则钢筋被调节成使钢筋的一部分表面的深度为D / 4的淬火和回火结构满足条件I），II），和III）如下：I）回火贝氏体组织和回火马氏体组织的总和占面积百分比的30至100％; II）再生珍珠岩结构占面积百分比的0〜50％; 和III）回火贝氏体组织，回火马氏体结构和再生珍珠岩结构的总和占面积百分比的50至100％。

2. 发明授权

US07662245B2 Steering rack comprising steel bar with rack teeth 有权
标题翻译：转向架包括带齿条齿的钢筋
公开(公告)号：US07662245B2
公开(公告)日：2010-02-16
申请号：US10558359
申请日：2004-05-27
申请人： Atsuhiko Ohta , Makoto Kamei , Kazuhiro Watanabe , Yukinori Kanaike , Osamu Tsukamoto , Masakazu Ikeda , Gorou Anan , Hiroshi Itoziri
发明人： Atsuhiko Ohta , Makoto Kamei , Kazuhiro Watanabe , Yukinori Kanaike , Osamu Tsukamoto , Masakazu Ikeda , Gorou Anan , Hiroshi Itoziri
IPC分类号： C22C38/14 , C22C38/04 , C22C38/02 , C22C38/06
CPC分类号： C22C38/02 , B62D3/126 , C21D1/18 , C21D9/32 , C21D2211/002 , C21D2211/008 , C21D2211/009 , C22C38/04 , C22C38/06 , C22C38/14 , Y10T74/1967
摘要： A steel bar for a steering rack that contains 0.50 to 0.60% by mass of C, 0.05 to 0.5% by mass of Si, 0.2 to 1.5% by mass of Mn, 0.0005 to 0.003% by mass of B, 0.005 to 0.05% by mass of Ti, 0.0005 to 0.1% by mass of Al, and 0.002 to 0.02% by mass of N is provided. Given D as a diameter of the steel bar, then the steel bar is adjusted in such a manner that quenched and tempered structures in a portion of the steel bar at a depth of D/4 from a surface satisfy conditions I), II), and III) as follows: I) a sum of a tempered bainitic structure and a tempered martensitic structure accounts for 30 to 100% in area percentage; II) a regenerated perlite structure accounts for 0 to 50% in area percentage; and III) a sum of the tempered bainitic structure, the tempered martensitic structure, and the regenerated perlite structure accounts for 50 to 100% in area percentage.
摘要翻译：用于转向架的钢棒，其含有C：0.05〜0.60质量％，Si：0.05〜0.5质量％，Mn：0.2〜1.5质量％，B：0.0005〜0.003质量％，0.005〜0.05质量％提供Ti的质量，Al：0.0005〜0.1质量％，N：0.002〜0.02质量％。给定D作为钢筋的直径，则钢筋被调节成使钢筋的一部分表面的深度为D / 4的淬火和回火结构满足条件I），II），和III）如下：I）回火贝氏体组织和回火马氏体组织的总和占面积百分比的30至100％; II）再生珍珠岩结构占面积百分比的0〜50％; 和III）回火贝氏体组织，回火马氏体结构和再生珍珠岩结构的总和占面积百分比的50至100％。

3. 发明授权

US07740722B2 Steel for use in high strength pinion shaft and manufacturing method thereof 有权
标题翻译：用于高强度小齿轮轴的钢及其制造方法
公开(公告)号：US07740722B2
公开(公告)日：2010-06-22
申请号：US10762559
申请日：2004-01-23
申请人： Katsunori Takada , Koichiro Inoue , Katsushi Goto , Atsuhiko Ohta , Tomoyuki Takei
发明人： Katsunori Takada , Koichiro Inoue , Katsushi Goto , Atsuhiko Ohta , Tomoyuki Takei
IPC分类号： C21D7/13 , C21D1/02
CPC分类号： C22C38/02 , B62D3/12 , C21D1/10 , C21D7/13 , C21D9/32 , C21D2211/002 , C21D2211/005 , C21D2211/009 , C22C38/04 , C22C38/12 , C22C38/14 , C22C38/18 , Y02P10/253
摘要： A steel for use in high strength pinion shaft which is not refined and used by applying high frequency hardening, with less occurrence of peeling during hobbing, having high surface hardness, impact value and torsional strength after high frequency hardening, and with less heat treatment strains during high frequency hardening, containing, on the mass % basis; C: 0.45-0.55%, Si: 0.10-0.50%, Mn: 0.50-1.20%, P: 0.025% or less, S: 0.025% or less, Mo: 0.15-0.25%, B: 0.0005-0.005%, Ti: 0.005-0.10%, and N: 0.015% or less, satisfying: 0.80≦Ceq 0.95 and f value≦1.0, and the balance of Fe and inevitable impurities, as well as a manufacturing method thereof.
摘要翻译：用于高强度小齿轮轴的钢，其通过施加高频硬化而不被精炼和使用，在滚齿期间发生较少的剥离，具有高的表面硬度，高频硬化后的冲击值和扭转强度以及较少的热处理应变在高频淬火期间，以质量％计; C：0.45〜0.55％，Si：0.10〜0.50％，Mn：0.50-1.20％，P：0.025％以下，S：0.025％以下，Mo：0.15〜0.25％，B：0.0005〜0.005％，Ti ：0.005-0.10％，N：0.015％以下，满足：0.80＆nlE; Ceq 0.95，f值＆nlE; 1.0，余量为Fe和不可避免的杂质，以及其制造方法。

4. 发明授权

US5960250A Bearing material 失效
标题翻译：轴承材料
公开(公告)号：US5960250A
公开(公告)日：1999-09-28
申请号：US930183
申请日：1997-10-20
申请人： Satosi Yasumoto , Tosiyuki Hosino , Keniti Amano , Atsuhiko Ohta , Michiro Hamanoue
发明人： Satosi Yasumoto , Tosiyuki Hosino , Keniti Amano , Atsuhiko Ohta , Michiro Hamanoue
IPC分类号： C22C38/00 , C21D9/36 , C21D9/40 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/18 , C22C38/22 , C22C38/60 , B22F3/00
CPC分类号： C22C38/06 , C22C38/02 , C22C38/04 , C22C38/18 , C21D9/36 , C21D9/40 , Y02P10/212 , Y10T428/12014 , Y10T428/1266
摘要： Bearing materials used for rolling bearings, such as roller bearings and ball bearings, and in particular, a bearing material having an extended rolling contact fatigue life.A bearing material having an extended rolling contact fatigue life comprises: 0.95 to 1.10 mass % of C, 0.15 to 0.70 mass % of Si, 1.15 mass % or less of Mn, 0.90 to 1.60 mass % of Cr and 0.025 mass % or less of P, and further 0.025 mass % or less of S and 0.0012 mass % or less of O as elements forming nonmetal inclusions, and the balance being Fe and incidental impurities, and the bearing material further contains 0.020 mass % or less of AlN, or the number of nonmetal sulfide inclusions each having a thickness of 1 .mu.m or more is 1,200 or less in an observation area of 320 mm.sup.2 for further extending the rolling contact fatigue life.
摘要翻译： PCT No.PCT / JP97 / 00549 Sec。 371日期：1997年10月20日 102（e）日期1997年10月20日PCT 1997年2月26日PCT PCT。公开号WO97 / 32050 PCT 日期1997年9月4日用于滚动轴承的滚动材料，例如滚子轴承和滚珠轴承，特别是具有延长的滚动接触疲劳寿命的轴承材料。具有延长的滚动接触疲劳寿命的轴承材料包括：C：0.95〜1.10质量％，Si：0.15〜0.70质量％，Mn 1.15质量％以下，Cr：0.90〜1.60质量％，Cr：0.025质量％ P，进一步含有0.025质量％以下的S和0.0012质量％以下的作为形成非金属夹杂物的元素，余量为Fe和附带杂质，轴承材料还含有0.020质量％以下的AlN，或为了进一步延长滚动疲劳寿命，在320mm 2的观察区域中，具有1μm以上的厚度的非金属硫化物夹杂物的数量为1,200以下。

5. 发明授权

US5733388A Steel composition for bearings and method of producing the same 失效
标题翻译：轴承用钢组成及其制造方法
公开(公告)号：US5733388A
公开(公告)日：1998-03-31
申请号：US621938
申请日：1996-03-25
申请人： Yutaka Kurebayashi , Sadayuki Nakamura , Masao Goto , Atsuhiko Ohta
发明人： Yutaka Kurebayashi , Sadayuki Nakamura , Masao Goto , Atsuhiko Ohta
IPC分类号： C22C38/22 , C21D9/40
CPC分类号： C22C38/22 , Y10S148/906
摘要： Bearing steel materials that are superior in cold workability, machinability, hardenability and rolling contact fatigue life are provided. During the processing of steel materials, the generation of large carbides, that detrimentally affect the rolling contact fatigue life of the steel, is inhibited, thereby obviating the necessity of a heat treatment for dissolving the carbides. The present steel material contains the following alloy elements in percentage by mass: 0.55% to 0.82% of carbon; 0.05% to 0.20% of silicon; 0.50% or less of manganese; 0.90% to 1.30% of chromium; 0.05% to 0.30% of molybdenum; and the remaining percentage substantially of iron. After the spheroidizing annealing of the steel material, the total cross-sectional area rate of carbide is 25% or less.
摘要翻译：提供了在冷加工性，机加工性，淬透性和滚动接触疲劳寿命方面优异的轴承钢材料。在钢材加工过程中，抑制了对钢的滚动疲劳寿命有不利影响的大碳化物的产生，从而消除了碳化物溶解热处理的必要性。本钢材以质量％计含有以下合金元素：0.55〜0.82％ 0.05％〜0.20％的硅; 0.50％以下的锰; 0.90〜1.30％的铬; 0.05〜0.30％的钼; 其余的百分比基本上是铁。在钢材的球化退火之后，碳化物的总横截面积率为25％以下。

6. 发明授权

US5908515A Bearing component 失效
标题翻译：轴承部件
公开(公告)号：US5908515A
公开(公告)日：1999-06-01
申请号：US666304
申请日：1996-09-06
申请人： Masao Goto , Atsuhiko Ohta
发明人： Masao Goto , Atsuhiko Ohta
IPC分类号： C22C38/00 , C22C38/22 , C22C38/24 , F16C33/30 , C22C38/12
CPC分类号： F16C33/62 , C22C38/22 , C22C38/24 , F16C33/30 , Y10S384/912 , Y10T428/12
摘要： A bearing component for use in anti-friction bearings as a bearing ring or rolling member is made from a steel comprising 0.6 to 0.8 wt. % of C, 0.05 to 0.25 wt. % of Si, 0.2 to 0.9 wt. % of Mn, 0.4 to 1.2 wt. % of Cr, one or both of 0.10 to 0.30 wt. % of Mo and 0.03 to 0.10 wt. % of V, and the balance Fe and inevitable impurities. The steel as hardened and tempered contains carbide having a maximum particle size of up to 1.5 .mu.m, and the amount of the carbide is 2 to 7% in area ratio. The steel therefore has improved cold workability, providing bearing components of a prolonged rolling fatigue life at a reduced cost.
摘要翻译： PCT No.PCT / JP94 / 02149 Sec。 371日期1996年9月6日 102（e）日期1996年9月6日PCT 1994年12月20日PCT PCT。公开号WO95 / 18239 日期1995年7月6日作为轴承圈或滚动体的抗摩擦轴承用轴承部件由含有0.6〜0.8重量％％的C，0.05〜0.25wt。 Si％，0.2〜0.9wt。 Mn的％，0.4〜1.2wt。 Cr的百分比，0.10〜0.30重量％中的一个或两个。％的Mo和0.03〜0.10wt。 V％，余量为Fe和不可避免的杂质。硬化和回火的钢含有最大粒度达1.5μm的碳化物，碳化物的面积比为2〜7％。因此，钢具有改善的冷加工性，从而以降低的成本提供延长的滚动疲劳寿命的轴承部件。

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