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11. 发明专利

JPH10258335A MANUFACTURE OF CONNECTING ROD 失效
公开(公告)号：JPH10258335A
公开(公告)日：1998-09-29
申请号：JP6345797
申请日：1997-03-17
申请人： NISSAN MOTOR
发明人： MURAKAMI YOICHI , USUKI HIDEKI , YAMAGUCHI TAKUO , ITAKURA KOJI
IPC分类号： B21J5/02 , B21K1/14
摘要： PROBLEM TO BE SOLVED: To improve the accuracy of the thickness and the parallelism of a large end part and a small end part, and to prevent reduction in the buckling strength and reduction in the fatigue strength of a connecting rod product by coining a crude forging material which is hot forged into the shape of the connecting rod at the prescribed temperature. SOLUTION: A steel stock is hot forged to form a crude forging material of the shape of the connecting rod. Hot coining of >=0.1mm in the thickness direction is performed in a large end part 1a and a small end part 1b of the crude forging material at the temperature of >=700 deg.C, or until the temperature is dropped to 700 deg.C. After the crude forging material is naturally cooled, the scale on the surface is removed by the shot blast to obtain a product connecting rod through machining. In order to decrease the cutting margin during the machining, coining may be performed only on the large end part 1a and the small end part 1b. Because a rod part 1c is not plastically deformed, the buckling strength of the product connecting rod is not decreased. The coining effect is improved when the structure of the connecting rod is ferrite-pearlite.

12. 发明专利

JPH0953148A MACHINE PARTS MADE OF HIGH TOUGHNESS CASE HARDENING STEEL AND THEIR PRODUCTION 失效
公开(公告)号：JPH0953148A
公开(公告)日：1997-02-25
申请号：JP20631095
申请日：1995-08-11
申请人： KOBE STEEL LTD , NISSAN MOTOR
发明人： YASUKI SHINICHI , MATSUSHIMA YOSHITAKE , OKADA YOSHIO , USUKI HIDEKI , KAMATA YASUSHI
IPC分类号： C21D7/06 , C21D6/00 , C21D9/00 , C21D9/28 , C21D9/32 , C21D9/40 , C22C38/00 , C22C38/18 , C22C38/38 , C22C38/58
摘要： PROBLEM TO BE SOLVED: To provide machine parts made of high toughness case hardening steel, excellent in wear resistance, fatigue characteristic, and impact resistance, at a low cost by applying carburizing and quenching to steel parts containing specific amounts of C, Si, Mn, P, S, Cr, Al, and N. SOLUTION: Steel parts, prepared by using a steel stock which has a composition consisting of, by mass, 0.1-0.25% C, 1.20-2.0% Mn, 0.70-1.50% Cr, 0.015-0.060% Al, 0.005-0.030% N, and the balance Fe with inevitable impurities and containing, if necessary, prescribed amounts of Mo, Ni, Cu, V, Ti, Nb, and Ca, is subjected to carburizing and quenching or to carbonitriding and quenching. By this procedure, the total area ratio of martensite and bainite in the core part, the area ratio of martensite, and pro-eutectoid ferrite are regulated to >=95%,

13. 发明专利

JP2009263684A Method for manufacturing steel-made parts 有权
标题翻译：制造钢制零件的方法
公开(公告)号：JP2009263684A
公开(公告)日：2009-11-12
申请号：JP2008111140
申请日：2008-04-22
申请人： Kobe Steel Ltd , Nissan Motor Co Ltd , 日産自動車株式会社 , 株式会社神戸製鋼所
发明人： HAYASHI TAKAO , OKADA YOSHIO , USUKI HIDEKI , MOMOZAKI HIROSHI
IPC分类号： C21D8/00 , B21J5/00 , B21J5/06 , B21J5/08 , C22C38/00 , C22C38/34
摘要： PROBLEM TO BE SOLVED: To provide a method for manufacturing steel-made parts which allows improvement in the drastic yield strength, shock strength and fatigue strength characteristics in comparison with the conventional reinforcement method using a hot-forging and a control-cooling, and the steel-made parts manufactured in such a method. SOLUTION: The steel containing, by mass, 0.25-0.80% C, 0.05-2.20% Si, 0.10-1.50% Mn and also, one or more elements among ≤1.20% Cr, ≤0.30% V, ≤0.08% Ti, ≤0.05% Al, is held at 1,050-1,150°C for ≥10 min, and then subjected to the forging (the first forging process) having 15-50% forging ratio in the temperature range of 600-850°C and the forging (the second forging process) having 60-75% forging ratio in the temperature range of 500-800°C, in order, and the air-cooling is performed. COPYRIGHT: (C)2010,JPO&INPIT
摘要翻译：要解决的问题：与使用热锻和控制冷却的常规加强方法相比，提供一种制造钢制零件的方法，其能够提高大幅度的屈服强度，冲击强度和疲劳强度特性，以及以这种方法制造的钢制零件。解决方案：钢中含有0.25-0.80％C，0.05-2.20％的Si，0.10-1.50％的Mn，以及一种或多种元素，在≤1.20％的Cr，≤0.30％V，≤0.08％ Ti，≤0.05％的Al在1050-1,150℃保持≥10分钟，然后进行在600-850℃的温度范围内具有15-50％锻压比的锻造（第一锻造工艺）和锻造（第二锻造工序）在500-800℃的温度范围内具有60-75％的锻造比，并进行空气冷却。版权所有（C）2010，JPO＆INPIT

14. 发明专利

JP2007100596A Intake valve for internal combustion engine 有权
标题翻译：内燃机入口阀
公开(公告)号：JP2007100596A
公开(公告)日：2007-04-19
申请号：JP2005291777
申请日：2005-10-04
申请人： Nissan Motor Co Ltd , 日産自動車株式会社
发明人： OGAWA JUNPEI , MIYAZAWA TOMONORI , HAMADA TAKAHIRO , USUKI HIDEKI , IGUCHI TOYOKI , SUZUKI TAKUMA
IPC分类号： F01L3/20 , F01L3/02
摘要： PROBLEM TO BE SOLVED: To provide an intake valve for an internal combustion engine capable of easily optimizing the thickness of an umbrella part of the intake valve itself, with superior enhancement in heat conductivity and heat resistance, and capable of sufficiently exhibiting the vaporization promoting function of fuel.
SOLUTION: This intake valve has the umbrella part 2 of an umbrella shape for opening and closing an intake passage of the internal combustion engine and a valve stem 3 for transmitting opening-closing operation to the umbrella part 2 and arranged on the reverse surface side of the umbrella part 2; and is molded so that a rate β ( = r/D) of a minimum radius (r) up to a reverse surface of the umbrella part 2 from a central point of a surface of the umbrella part 2 to a diameter D of the umbrella part, satisfies a predetermined expression of including heat conductivity α of a material of the umbrella part 2 and fatigue strength at 250 °C as a variable when manufacturing the intake valve 1 for the internal combustion engine having an umbrella part material being a metal or metal group composite material. The intake valve 1 manufactured in this way, has very high temperature strength, and also superior heat conductivity, and can contribute to an enhancement in heat efficiency and anti-knocking performance of the internal combustion engine.
COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：为了提供能够容易地优化进气门本身的伞部的厚度的内燃机的进气阀，具有优异的导热性和耐热性的提高，并且能够充分地显示出汽化促进燃料功能。解决方案：该进气阀具有用于打开和关闭内燃机的进气通道的伞形伞的伞部分2和用于将打开 - 关闭操作传递到伞部件2并布置在其上的阀杆3 伞部2的表面侧; 并且模制成使得从伞部2的表面的中心点到伞的直径D的最小半径（r）直到伞部2的相反表面的速率β（= r / D）部分，当制造具有伞部件材料的金属或金属的内燃机的进气门1时，满足包括伞部件2的材料的导热率α和在250℃下的疲劳强度的预定表达式作为变量组合复合材料。以这种方式制造的进气门1具有非常高的温度强度和优异的导热性，并且可以有助于提高内燃机的热效率和抗爆震性能。版权所有（C）2007，JPO＆INPIT

15. 发明专利

JP2005321018A Rivet and joining method using rivet 审中-公开
标题翻译：使用RIVET的RIVET和JOINING方法
公开(公告)号：JP2005321018A
公开(公告)日：2005-11-17
申请号：JP2004139327
申请日：2004-05-10
申请人： Nissan Motor Co Ltd , 日産自動車株式会社
发明人： YOSHIDA AKIRA , USUKI HIDEKI
IPC分类号： F16B19/08 , B21J15/00
摘要： PROBLEM TO BE SOLVED: To provide a rivet, imparting favorable corrosion resistance to a joining part by a rivet, and a jointing method using the rivet.
SOLUTION: In this rivet 1, a film 3 made of resin molten by predetermined heating treatment and hardened at room temperature is formed on the head part 2a. After the superposed members to be joined are joined, heating treatment is performed within a temperature range of 140 to 200°C about 5 to 20 minutes, thereby melting the resin film 3 to flow in between the rivet 1 and a joined material.
COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：提供铆钉，通过铆钉赋予接合部分良好的耐腐蚀性和使用铆钉的接合方法。解决方案：在该铆钉1中，在头部2a上形成由预定加热处理熔化的树脂制成的膜3，并在室温下硬化。在接合的叠置构件接合之后，在140〜200℃的温度范围内进行约5〜20分钟的加热处理，从而熔化树脂膜3，以在铆钉1和接合材料之间流动。版权所有（C）2006，JPO＆NCIPI

16. 发明专利

JP2005009638A Shaft part and method for hardening surface of shaft part 审中-公开
标题翻译：轴组件表面硬化部分和方法
公开(公告)号：JP2005009638A
公开(公告)日：2005-01-13
申请号：JP2003176853
申请日：2003-06-20
申请人： Nissan Motor Co Ltd , 日産自動車株式会社
发明人： MIURA NAOMI , HAYASHI TAKAO , USUKI HIDEKI
IPC分类号： F16C3/02 , C21D1/06 , C21D1/76 , C21D9/28 , C23C8/32
摘要： PROBLEM TO BE SOLVED: To provide a shaft part having excellent bending fatigue strength.
SOLUTION: The shaft part has a surface hardening layer, and hardness distribution is present in the direction of depth from a surface, and peak hardness is present at an internal part.
COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：提供具有优异的弯曲疲劳强度的轴部。解决方案：轴部具有表面硬化层，并且硬度分布存在于从表面的深度方向上，峰值硬度存在于内部部分。版权所有（C）2005，JPO＆NCIPI

17. 发明专利

JP2006007266A Joining method using rivet 审中-公开
标题翻译：使用RIVET的接合方法
公开(公告)号：JP2006007266A
公开(公告)日：2006-01-12
申请号：JP2004187272
申请日：2004-06-25
申请人： Nissan Motor Co Ltd , 日産自動車株式会社
发明人： TAKAHASHI ATSUSHI , USUKI HIDEKI
IPC分类号： B21J15/00 , F16B5/04
CPC分类号： B21J15/025 , B21J15/08
摘要： PROBLEM TO BE SOLVED: To provide a joining method using a rivet by which the improvement of the joined strength of members to be joined under lapping state, is realized without developing such troubles as crack on the members to be joined.
SOLUTION: When both members WU, WL to be joined are lap-joined by using the rivet 1 provided with a hollow shaft part 4 having a center hole opened at the tip end part, a range having almost 50 × diameter centering hitting point of the rivet is made to be a heating range of both members WU, WL to be joined, and the hitting of the rivet 1 is performed by using an electric heater 10 as a heating means and heating the heating range, at least in one side of the members WU, WL to be joined until the members WU, WL reach a prescribed temperature.
COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：提供一种使用铆钉的接合方法，通过该接合方式可以实现在研磨状态下提高接合部件的接合强度，而不会产生诸如待接合部件上的裂纹的问题。解决方案：当通过使用具有中空孔的中空轴部4的铆钉1将两个待接合的构件WU，WL进行搭接时，该中空轴部4具有在前端部开口的中心孔，将铆钉的点作为要连接的两个构件WU，WL的加热范围，并且通过使用电加热器10作为加热装置并且至少在一个加热范围中加热铆钉1来进行铆钉1的击打要连接的构件WU，WL的一侧，直到构件WU，WL达到规定的温度。版权所有（C）2006，JPO＆NCIPI

18. 发明专利

JP2005082865A Non-heat treated aluminum alloy for die-casting, die-cast product obtained by using the alloy, and method for producing the product 审中-公开
标题翻译：用于铸造的非热处理铝合金，使用合金获得的铸造产品以及生产该产品的方法
公开(公告)号：JP2005082865A
公开(公告)日：2005-03-31
申请号：JP2003317446
申请日：2003-09-09
申请人： Nippon Light Metal Co Ltd , Nissan Motor Co Ltd , 日本軽金属株式会社 , 日産自動車株式会社
发明人： AOKI SHOJI , ITAKURA KOJI , TSUSHIMA KENJI , KUDO KATSUHIRO , USUKI HIDEKI , SHIODA MASAHIKO , SUMI SHINICHIRO
IPC分类号： B22D21/04 , B22D17/00 , B22D17/14 , C22C21/02
摘要： PROBLEM TO BE SOLVED: To provide a non-heat treated aluminum alloy for die-casting capable of obtaining stably high strength and high elongation without being subjected to a solution treatment after casting, and further having excellent castability particularly in the point that casting cracks are hard to occur.
SOLUTION: The non-heat treated aluminum alloy for die-casting has a composition in which the mass ratio between Mg and Si is 0.1 to 0.5, and comprising, by mass, 3.5 to 5.0% Si, 0.35 to 2.5% Mg, 0.3 to 1.5% Mn, ≤0.15% Fe and ≤0.20% Ti, and the balance aluminum with inevitable impurities.
COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：提供一种用于压铸的非热处理铝合金，其能够获得稳定的高强度和高伸长率，而不经过浇铸后的固溶处理，并且还具有优异的浇铸性，特别是在铸造裂纹很难发生。解决方案：用于压铸的非热处理铝合金具有其中Mg和Si之间的质量比为0.1至0.5的组成，并且包含质量为3.5至5.0％的Si，0.35至2.5％的Mg ，0.3〜1.5％Mn，≤0.15％Fe和≤0.20％Ti，余量为铝与不可避免的杂质。版权所有（C）2005，JPO＆NCIPI

19. 发明专利

JP2004009197A STRENGTHENING METHOD FOR WELDED PART MADE OF LIGHT METAL AND WELDED PART MADE OF LIGHT METAL 审中-公开
公开(公告)号：JP2004009197A
公开(公告)日：2004-01-15
申请号：JP2002165315
申请日：2002-06-06
申请人： NISSAN MOTOR
发明人： AOKI SHOJI , ITAKURA KOJI , KAMATA YASUSHI , USUKI HIDEKI
IPC分类号： B24C1/10 , B24C11/00
摘要： PROBLEM TO BE SOLVED: To enhance fatigue strength of a welded part to fatigue strength or higher of a mother material by removing a reduction factor of the fatigue strength of the welded part. SOLUTION: In the method, the welded part made of a light metal and formed using a filler metal is strengthened. A shot peening for projecting a ceramic bead 1 onto a surface of the welded part W is carried out at a projection pressure and a projection time satisfying a condition of 37.802×P -0.1771 ≤t≤90 and 0 COPYRIGHT: (C)2004,JPO

20. 发明专利

JP2003239039A CARBURIZED MATERIAL 审中-公开
公开(公告)号：JP2003239039A
公开(公告)日：2003-08-27
申请号：JP2002041471
申请日：2002-02-19
申请人： JATCO LTD , NISSAN MOTOR
发明人： YOSHIDA MAKOTO , IKEDA ATSUSHI , HAYASHI TAKAO , USUKI HIDEKI
IPC分类号： C21D6/00 , C22C38/00 , C22C38/32 , C22C38/60
摘要： PROBLEM TO BE SOLVED: To provide a carburized material which is suitable, e.g. to a shaft material for a speed change gear, causes no remarkable increase in parts cost, and has excellent torsional impact strength and torsional fatigue strength compared with the conventionally used one. SOLUTION: The carburized material is obtained by carburizing steel having a composition containing at least one kind selected from, by mass, 0.12 to 0.23% C, ≤0.08% Si, 0.40 to 0.80% Mn, 0.90 to 1.20% Cr, 0.0005 to 0.0050% B, 0.03 to 0.07% Nb and 0.03 to 0.07% Ti, and 0.015 to 0.045% Al and 0.008 to 0.012% N, and the balance Fe with inevitable impurities, and thereafter quenching the steel in a quenching oil heated at a temperature lower than T, i.e., the temperature calculated by T (°C)=40×[Mn%]+75. COPYRIGHT: (C)2003,JPO

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