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1. 发明专利

JP2002356738A HIGH CONTACT PRESSURE RESISTANT MEMBER AND ITS MANUFACTURING METHOD 失效
公开(公告)号：JP2002356738A
公开(公告)日：2002-12-13
申请号：JP2001160694
申请日：2001-05-29
申请人： DAIDO STEEL CO LTD , NISSAN MOTOR
发明人： KUREBAYASHI YUTAKA , KIMURA TOSHIMITSU , YAMAGUCHI TAKUO , OTANI KEIZO , UCHIYAMA NORIKO
IPC分类号： C21D6/00 , C22C38/00 , C22C38/22 , C22C38/46
摘要： PROBLEM TO BE SOLVED: To provide a high contact pressure resistant member having excellent surface fatigue strength owing to finely and uniformly precipitated M23 C6 -type carbides, and also to provide a method for manufacturing the high contact pressure resistant member by which the M23 C6 -type carbides is precipitated finely and uniformly in an intermediate step and resultantly the surface fatigue strength of the member is greatly improved. SOLUTION: In raising the temperature of steel for machine structural use in which C content is made to 0.6-1.5% or surface C content is enriched to 0.6-1.5% by a carburizing treatment or a carbonitriding treatment to an intermediate temperature of 600-750 deg.C, the steel is heated through the temperature range of 500-650 deg.C at (0.2 to 30) deg.C/min temperature-rise rate, held successively within the intermediate temperature range, then held at a temperature not lower than the Ac1 transformation temperature and not higher than the A cm transformation temperature, and quenched for hardening.

2. 发明专利

JP2002339054A HIGH PRESSURE-RESISTANT MEMBER AND MANUFACTURING METHOD 失效
公开(公告)号：JP2002339054A
公开(公告)日：2002-11-27
申请号：JP2001148517
申请日：2001-05-17
申请人： DAIDO STEEL CO LTD , NISSAN MOTOR
发明人： KUREBAYASHI YUTAKA , KIMURA TOSHIMITSU , YAMAGUCHI TAKUO , OTANI KEIZO , UCHIYAMA NORIKO
IPC分类号： C23C8/22 , C21D1/06 , C21D1/18 , C22C38/00 , C22C38/22 , C23C8/32
摘要： PROBLEM TO BE SOLVED: To provide a high pressure-resistant member in which residual hydrogen can be reduced even when a carburizing or carbonitriding treatment using converted gas is applied and delayed fracture and reduction in bending fatigue strength and rolling fatigue strength due to hydrogen embitterment can be prevented, and also to provide a method for manufacturing the high pressure- resistant member. SOLUTION: Surface C quantity of the member is enriched to 0.6-1.5% by the gas carburizing or gas carbonitriding treatment, and then the member is kept at a temperature not higher than the Ac1 transformation temperature under a reduced pressure to reduce hydrogen. Successively, heating are continued at a temperature not lower than the Ac1 transformation temperature, followed by quenching to undergo hardening.

3. 发明专利

JP2002317239A HIGH FACIAL-PRESSURE RESISTANCE MEMBER AND PRODUCTION METHOD THEREFOR 失效
公开(公告)号：JP2002317239A
公开(公告)日：2002-10-31
申请号：JP2001119242
申请日：2001-04-18
申请人： DAIDO STEEL CO LTD , NISSAN MOTOR
发明人： KIMURA TOSHIMITSU , URAKAWA JUNYA , KINO NOBUO , OTANI KEIZO
IPC分类号： F16H15/38 , C22C19/05 , C22C38/00 , C23C24/04 , F16C33/30
摘要： PROBLEM TO BE SOLVED: To provide a high facial-pressure resistance member which has high compressive residual stress in the surface layer part, and in which initial peeling caused by the intrusion and embrittlement of hydrogen can be prevented, and which is provided with excellent rolling fatigue resistance, and a production method for the high facial-pressure resistant member. SOLUTION: The surface compressive residual stress in the rolling part of the high facial-pressure resistance member consisting of steel for machine structures, e.g. containing 0.15 to 1.2% C, 0.8 to 2.5% Cr, 0.15 to 1.5% Mo and 0.05 to 1.5% Si is controlled to >=700 MPa. Further, an alloy film with the average film thickness of 0.2 to 20 μm containing, e.g. 65 to 85% Ni is formed on the surface layer of the rolling part.

4. 发明专利

JP2005068453A High facial pressure resistant part and manufacturing method therefor 审中-公开
标题翻译：高真空耐压部件及其制造方法
公开(公告)号：JP2005068453A
公开(公告)日：2005-03-17
申请号：JP2003209275
申请日：2003-08-28
申请人： Daido Steel Co Ltd , Nissan Motor Co Ltd , 大同特殊鋼株式会社 , 日産自動車株式会社
发明人： OTANI KEIZO , KINO NOBUO , UCHIYAMA NORIKO , YAMAGUCHI TAKUO , KIMURA TOSHIMITSU
IPC分类号： F16H55/06 , C21D1/78 , C21D9/00 , C21D9/32 , C21D9/36 , C21D9/40 , C22C38/00 , C22C38/50 , C23C8/22 , F16C33/32 , F16C33/34 , F16C33/62 , F16H15/38 , F16H55/17
CPC分类号： C22C38/44 , C21D1/78 , C21D9/36 , C22C38/02 , C22C38/04 , C22C38/46 , C22C38/48 , C22C38/50 , C23C8/22
摘要： PROBLEM TO BE SOLVED: To provide high facial pressure resistant parts which miniaturize / reduce the weight of rolling parts such as a toothed gear and bearings, and power transmission parts in a CVT (continuously variable transmission) mechanism, enhance a capacity of transmittable torque and have surface fatigue strength usable under a high bearing pressure, and to provide a manufacturing method therefor.
SOLUTION: The high facial pressure resistant parts are made of a steel material comprising 0.15-0.40% C, 0.50-1.50% Si, 0.20-1.50% Mn, 0.50-1.50% Cr, 0.05-0.50% Mo, one or more elements selected from the group consisting of 0.50-3.50% Ni, 0.03-0.20% Ti, 0.03-0.15% Nb and 0.01-0.10% Al, 0.010% or less P and the balance Fe with unavoidable impurities; and contains 0.8 to 1.2% carbon at the rolling portion on the surface.
COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：为了提供在CVT（无级变速器）机构中使齿轮和轴承等的滚动部件和动力传递部件的重量轻小化或减轻的高面部耐压部件，提高并且在高承载压力下具有可使用的表面疲劳强度，并提供其制造方法。
解决方案：高耐面压部件由钢材制成，包括0.15-0.40％C，0.50-1.50％Si，0.20-1.50％Mn，0.50-1.50％Cr，0.05-0.50％Mo，一种或更多的元素选自0.50-3.50％Ni，0.03-0.20％Ti，0.03-0.15％Nb和0.01-0.10％Al，0.010％或更少的P，余量为不可避免的杂质; 并且在表面的滚动部分含有0.8-1.2％的碳。版权所有（C）2005，JPO＆NCIPI

5. 发明专利

JP2001098343A HIGH BEARING PRESSURE RESISTANT MEMBER AND PRODUCING METHOD THEREOF 失效
公开(公告)号：JP2001098343A
公开(公告)日：2001-04-10
申请号：JP2000204798
申请日：2000-07-06
申请人： DAIDO STEEL CO LTD , NISSAN MOTOR
发明人： NAKAMURA TAKESHI , NAKAMURA SADAYUKI , KIMURA TOSHIMITSU , YAMAGUCHI TAKUO , OTANI KEIZO , UCHIYAMA NORIKO , KINO NOBUO , NANBU TOSHIKAZU
IPC分类号： F16H55/06 , C21D1/78 , C21D6/00 , C21D9/32 , C21D9/36 , C21D9/40 , C22C38/00 , C22C38/46 , C23C8/22 , C23C8/32 , C23C8/34 , C23C8/80 , F16C19/10 , F16C33/30 , F16C33/62 , F16C33/64 , F16H15/38
摘要： PROBLEM TO BE SOLVED: To produce a high bearing pressure resistant member excellent in bearing fatigue strength even at quasi-high temperature to high temperature (100 to 300 deg.C) and also under high bearing pressure where local facial pressure exceeds 3 GPa, moreover free from the increase of the cost of the stock based on the addition of a large quantity of alloy elements and deterioration in machinability compared to the conventional member and free from the need of complicated heat treatment and to provide a method of producing the high bearing pressure resistant member. SOLUTION: A member consisting of steel for machine structure containing Cr is carbonized so that its surface carbon concentration is controlled to 0.6 to 1.5%, then is held at a temperature with a prescribe temperature decided by the alloy components as the upper limit, and is quenched while being held at an austenitic region temperature, by which carbides with the average grain size of

6. 发明专利

JP2004027305A Case hardening member for rolling part 审中-公开
公开(公告)号：JP2004027305A
公开(公告)日：2004-01-29
申请号：JP2002186668
申请日：2002-06-26
申请人： Daido Steel Co Ltd , Nissan Motor Co Ltd , 大同特殊鋼株式会社 , 日産自動車株式会社
发明人： KIMURA TOSHIMITSU , OTANI KEIZO , UCHIYAMA NORIKO , YAMAGUCHI TAKUO , KINO NOBUO
IPC分类号： F16H55/06 , C22C38/00 , C22C38/48 , C22C38/54 , F16H15/38
摘要： PROBLEM TO BE SOLVED: To provide a case hardening member for a rolling part with which variation in the rolling fatigue strength of the part can be reduced without promoting the formation of network coarse carbides on the surface of the part in the process of carburizing, or the formation of a film blocking the carburizing can be prevented, and the concentration of the carbon on the surface thereof can be set to an objective value.
SOLUTION: The case hardening member for a rolling part consists of steel having a composition comprising, by mass, 0.15 to 0.40% C, 0 to 1.50% Si, 0 to 4.50% Ni, 0.85 to 3.0% Cr and 0.15 to 2.0% Mo, and in which the condition of Cr+Mo:2.5 to 4.0% or Si+Ni:1.50 to 5.0% is satisfied, and the balance Fe with inevitable impurities, and the content of Nb is controlled to

7. 发明专利

JP2002348636A STEEL FOR CARBURIZATION 审中-公开
公开(公告)号：JP2002348636A
公开(公告)日：2002-12-04
申请号：JP2002051519
申请日：2002-02-27
申请人： NISSAN MOTOR , DAIDO STEEL CO LTD
发明人： UCHIYAMA NORIKO , YAMAGUCHI TAKUO , KINO NOBUO , OTANI KEIZO , KIMURA TOSHIMITSU
IPC分类号： C22C38/00 , C22C38/50
摘要： PROBLEM TO BE SOLVED: To provide a steel for carburization suitable for such uses as a power transmission component, which can keep a high surface fatigue strength even when used in temperatures between semi-high and high temperature (in the order of 100-300 deg.C), and under hydrogen-generating environment. SOLUTION: The steel for carburization suitable for such uses as the power transmission component includes, by wt.%, 0.15-0.40% C, 0.50-1.50% Si, 0.20-1.50% Mn, 0.40-4.50% Ni, 1.50-3.0% Cr, and 0.50-2.0% Mo, and one or more from 0.05-0.40% V; 0.03-0.20% Ti, 0.03-0.15% Nb, 0.01-0.10% Al, and 0.0005-0.0030% B, and the balance Fe with unavoidable impurities.

8. 发明专利

JP2009242936A Rare earth permanent magnet alloy and manufacturing method thereof 有权
标题翻译：稀土永磁合金及其制造方法
公开(公告)号：JP2009242936A
公开(公告)日：2009-10-22
申请号：JP2008232743
申请日：2008-09-10
申请人： Daido Steel Co Ltd , Meiji Univ , Nissan Motor Co Ltd , 大同特殊鋼株式会社 , 学校法人明治大学 , 日産自動車株式会社
发明人： YAMAMOTO HIROSHI , TAYU TETSURO , OMURA MASASHI , OTANI KEIZO , YABUMI TAKAO , HASHINO HAYATO
IPC分类号： C22C38/00 , C21D6/00 , H01F1/053
CPC分类号： H01F1/0579 , B22F9/007 , B22F2009/048 , B82Y25/00 , C22C1/0491 , C22C33/0257 , C22C38/005 , C22C2202/02 , H01F1/058
摘要： PROBLEM TO BE SOLVED: To provide a rare earth permanent magnet alloy with a high coercive force.
SOLUTION: The rare earth permanent magnet alloy comprises a rare earth-iron-boron type magnetic phase (R
2 Fe
14 B type magnetic phase) and at least a defect structure 2 in an internal structure. The defect structure 2 is included in the R
2 Fe
14 B type magnetic phase. Displacement of a domain wall of the R
2 Fe
14 B type magnetic phase is prevented by the defect structure 2 included in the R
2 Fe
14 B type magnetic phase, thereby improving the coercive force.
COPYRIGHT: (C)2010,JPO&INPIT
摘要翻译：要解决的问题：提供具有高矫顽力的稀土永磁体合金。解决方案：稀土永磁体合金包括稀土 - 铁 - 硼型磁相（R SB SB 2，SB SB 14型磁性相）和至少一种缺陷结构2在内部结构。缺陷结构2包括在R SBM 2 SBS磁性相中。通过包含在R SB 2 / SBB中的缺陷结构2，可以防止R SB 2 / SB SB 14磁性相的畴壁的位移， SB> 14 B型磁相，从而提高矫顽力。版权所有（C）2010，JPO＆INPIT

9. 发明专利

JP2002348615A HIGH BEARING PRESSURE RESISTANT MEMBER AND MANUFACTURING METHOD THEREFOR 失效
公开(公告)号：JP2002348615A
公开(公告)日：2002-12-04
申请号：JP2001149844
申请日：2001-05-18
申请人： DAIDO STEEL CO LTD , NISSAN MOTOR
发明人： KUREBAYASHI YUTAKA , KIMURA TOSHIMITSU , YAMAGUCHI TAKUO , OTANI KEIZO , UCHIYAMA NORIKO
IPC分类号： C23C8/22 , C21D1/06 , C21D6/00 , C21D9/32 , C21D9/40 , C22C38/00 , C22C38/22
摘要： PROBLEM TO BE SOLVED: To provide a method for manufacturing a high bearing pressure resistant member, which carburizes a low C material into high concentration, further prevents the growth of carbide by controlling its generation, and prevents degradation of the surface fatigue strength, and to provide a high bearing pressure resistance member, having finely and uniformly precipitated carbide on the surface layer and excellent in the rolling fatigue life. SOLUTION: This method comprises vacuum carburizing a steel for a machine structure (the first carburization), which includes, for instance, 0.15-0.40% C, 1.2-3.2% Cr, and 0.25-2.0% Mo, vacuum diffusing the surface C at a solid solution temperature of carbide, for instance, at 900-1050 deg.C, to make the surface C quantity after the treatment to be 0.5-0.7%, and lowering the temperature from the above vacuum diffusion temperature to a quenching temperature of 870-920 deg.C, for instance, at a cooling rate of 1-10 deg.C/min, for instance, to increase the C concentration on the material surface to 0.7-1.0%, for instance, by diffusing carbon during holding it at the above quenching temperature.

10. 发明申请

WO2005029623A2 SEPARATOR FOR FUEL CELL, FUEL CELL STACK, METHOD FOR MANUFACTURING SEPARATOR FOR FUEL CELL, AND FUEL CELL VEHICLE 审中-公开
标题翻译：燃料电池分离器，燃料电池堆，制造用于燃料电池的分离器的方法和燃料电池车
公开(公告)号：WO2005029623A2
公开(公告)日：2005-03-31
申请号：PCT/JP2004012231
申请日：2004-08-19
申请人： NISSAN MOTOR , CHIBA NOBUTAKA , OTANI KEIZO , OOE SHINJI , KANO MAKOTO
发明人： CHIBA NOBUTAKA , OTANI KEIZO , OOE SHINJI , KANO MAKOTO
IPC分类号： H01M8/02 , H01M8/10
CPC分类号： H01M8/021 , H01M8/0206 , H01M8/0228 , H01M8/0254 , H01M8/026 , H01M8/1007 , Y02P70/56
摘要： A separator for a fuel cell comprises a corrugated or undulated gas flow path portion (4) formed on central portion (2) of a clad thin plate: and a flat portion (6) formed on an outer periphery of the central portion, wherein the clad thin portion is obtained by applying rolling work on a metal plate whose surface is covered with a precious metal layer at a draft of 5% to 15% to make clad, and a limit plate thickness residual rate indicating a boundary limit in which cracking of the precious metal layer in the clad thin plate and reduction of corrosion resistance due to exposure of the metal plate are negligible is obtained in advance, wherein regarding a sectional shape in a direction orthogonal to a flow path of the gas flow path portion (4), when a plate thickness of the thinnest portion of a rib shoulder portion is represented as t2 and a plate thickness of a peripheral portion of the separator is represented as t4, a relationship of t2>= t4xlimit plate thickness residual rate is satisfied.
摘要翻译：燃料电池用隔板包括形成在包层薄板的中央部（2）上的波纹状或波状的气体流路部（4）和形成在中央部的外周的平坦部（6），其中，通过在表面覆盖有贵金属层的金属板上以5％〜15％的压下量进行轧制加工，得到包层薄部分，以制成包层，并且限制板厚残留率表示边界极限，其中开裂预先获得包覆薄板中的贵金属层和由金属板的暴露引起的耐腐蚀性的降低，其中关于与气体流路部分（4）的流动路径正交的方向上的截面形状，当肋肩部的最薄部分的板厚表示为t2，隔板的周边部分的板厚表示为t4时，t2> = t4×限制板厚残留率之间的关系为s atisfied。

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