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1. 发明专利

JP2009079253A Shaft and manufacturing method therefor 有权
标题翻译：其制造方法及其制造方法
公开(公告)号：JP2009079253A
公开(公告)日：2009-04-16
申请号：JP2007249028
申请日：2007-09-26
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： KOYANAGI KOJI , MIURA NAOMI , HAYASHI TAKAO , OKADA YOSHIO , ARAKI SHINICHI , MIYAZAKI TAKAHIRO , INAGAKI HIDETOSHI
IPC分类号： C22C38/00 , C21D1/06 , C21D1/46 , C21D9/28 , C22C38/24 , C22C38/60
摘要： PROBLEM TO BE SOLVED: To provide a high-strength shaft which has adequate impact-bending resistance, and besides, adequate abrasion resistance and seizure resistance, and to provide a manufacturing method therefor. SOLUTION: This manufacturing method includes the steps of: preparing a steel material composed of, by mass ratio, 0.15% to 0.60% C, 0.2% or less Si, 0.10% to 0.70% Mn, 0.03% or less P, 0.03% or less S, 0.1% to 1.6% Cr, 0.6% to 1.5% Mo, 0.05% to 0.40% V and the balance Fe with unavoidable impurities; quenching the steel material at 880°C or higher; and subjecting it to nitrocarburizing treatment in a salt-bath or nitrocarburizing treatment by gas at 550 to 650°C. Thus obtained shaft has an internal hardness of 400 Hv or more and a hardness of 600 Hv or more at the position of 0.05 mm deep from its surface; and has a nitride layer with a thickness of 25 μm or less formed on the surface. COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：要解决的问题：提供具有足够的抗冲击性的高强度轴，并且具有足够的耐磨性和耐咬合性，并提供其制造方法。解决方案：该制造方法包括以下步骤：制备以质量比计，0.15％至0.60％C，0.2％或更少的Si，0.10％至0.70％的Mn，0.03％以下的P， 0.03％以下的S，0.1〜1.6％的Cr，0.6〜1.5％的Mo，0.05〜0.40％的V，余量为Fe和不可避免的杂质; 在880℃以上淬火钢材; 并在550〜650℃下通过气体在盐浴或氮碳共渗处理中进行氮碳共渗处理。这样得到的轴的表面的深度为0.05mm以上的内部硬度为400Hv以上，硬度为600Hv以上。并且在表面上形成有厚度为25μm以下的氮化物层。版权所有（C）2009，JPO＆INPIT

2. 发明专利

JP2008088527A Connecting rod and its production method 审中-公开
标题翻译：连接杆及其生产方法
公开(公告)号：JP2008088527A
公开(公告)日：2008-04-17
申请号：JP2006272834
申请日：2006-10-04
申请人： Nissan Motor Co Ltd , 日産自動車株式会社
发明人： AIHARA KAZUISHI , MIYAZAWA TOMONORI , OGAWA JUNPEI , OKADA YOSHIO
IPC分类号： C22C38/00 , C21D1/10 , C21D1/18 , C21D1/42 , C21D9/00 , C22C38/38 , C22C38/60 , F16C7/00
CPC分类号： Y02P10/253
摘要： PROBLEM TO BE SOLVED: To provide a lightweight high strength connecting rod in which the increase of the strength in a junction and the reduction in the deformation quantity upon the fracture of a big end part can be made consistent, and to which a fracture separation process can be applied, and to provide its production method. SOLUTION: In the connecting rod provided with a big end part M, a small end part S and a junction I connecting them, a fracture scheduled part B in the big end part M composed of a steel comprising 0.2 to 0.5 mass% carbon is hardened, and the relation between the content of the carbon and the area ratio of martensite satisfies the inequality (1) of carbon content(mass%)×martensite area ratio(%)>10. COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：要解决的问题：提供一种轻质高强度连杆，其中可以使大端部的断裂处的连接处的强度的增加和变形量的减少一致，并且其中可以应用裂缝分离过程，并提供其生产方法。解决方案：在设置有大端部M的连杆中，小端部S和连接它们的接合点I，由包含0.2至0.5质量％的钢的大端部M中的断裂预定部分B，碳硬化，碳含量与马氏体的面积比之间的关系满足碳含量（质量％）×马氏体面积率（％）> 10的不等式（1）。版权所有（C）2008，JPO＆INPIT

3. 发明专利

JP2007332456A Ultrahigh strength steel sheet and strength part for automobile utilizing the same 有权
标题翻译：超高强度钢板和强度部分使用汽车
公开(公告)号：JP2007332456A
公开(公告)日：2007-12-27
申请号：JP2007127754
申请日：2007-05-14
申请人： National Institute For Materials Science , Nissan Motor Co Ltd , 日産自動車株式会社 , 独立行政法人物質・材料研究機構
发明人： SASAOKA HIDEYUKI , ONO KIMIMOTO , NAKANISHI EIZABURO , OKADA YOSHIO , INOUE TADANOBU , KIMURA YUJI , NAGAI HISASHI
IPC分类号： C22C38/00 , C21D9/46 , C22C38/28 , C22C38/50
摘要： PROBLEM TO BE SOLVED: To provide an ultrahigh strength steel sheet combining excellent formability and delayed fracture resistance, and to provide a strength part for an automobile utilizing the same.
SOLUTION: An ultrahigh strength steel sheet comprising molybdenum, tungsten, vanadium, titanium, niobium or the like, wherein the base structure thereof is annealed lower bainite, the grain diameter of prior austenite is 30 μm or less and the tensile strength thereof is 980 MPa or greater. The steel sheet comprises 0.10 to 0.40% C, 0.01 to 3.5% Cr, 0.10 to 2.0% Mo, 0.20 to 1.5% W, 0.002 to 1.0% V, 0.002 to 1.0% Ti, 0.005 to 1.0% Nb or the like, and comprises 0.02% or less P and 0.01% or less S and the balance of Fe and unavoidable impurities, wherein the average grain diameter of prior austenite is 3 to 10 μm. Further, there is provided a strength part for an automobile utilizing the ultrahigh strength steel sheet.
COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：要解决的问题：提供一种结合优异的成形性和延迟抗断裂性的超高强度钢板，并为使用该强度的汽车提供强度部件。解决方案：一种包括钼，钨，钒，钛，铌等的超高强度钢板，其基体结构为退火的下贝氏体，原奥氏体的晶粒直径为30μm以下，其拉伸强度为980MPa以上。该钢板包含0.10〜0.40％的C，0.01〜3.5％的Cr，0.10〜2.0％的Mo，0.20〜1.5％的W，0.002〜1.0％的V，0.002〜1.0％的Ti，0.005〜1.0％的Nb等，包含0.02％以下的P和0.01％以下的S，剩余的Fe和不可避免的杂质，其中，前奥氏体的平均粒径为3〜10μm。此外，提供了利用超高强度钢板的汽车的强度部。版权所有（C）2008，JPO＆INPIT

4. 发明专利

JP2007332452A High-tensile steel sheet for resistance welding and joining process therefor 有权
标题翻译：用于电阻焊接和接合工艺的高强度钢板
公开(公告)号：JP2007332452A
公开(公告)日：2007-12-27
申请号：JP2007043384
申请日：2007-02-23
申请人： Nissan Motor Co Ltd , 日産自動車株式会社
发明人： ONO KIMIMOTO , SASAOKA HIDEYUKI , NAKANISHI EIZABURO , OKADA YOSHIO , MICHIURA YOSHIHARU , TAKAGI MASAAKI
IPC分类号： C22C38/00 , B23K11/00 , B23K11/16 , B23K31/00 , B23K103/04 , C21D9/46 , C22C38/34 , C22C38/42
CPC分类号： C22C38/02 , B23K11/16 , C21D8/0226 , C21D9/46 , C21D9/50 , C22C38/04 , C22C38/18 , C22C38/40 , C22C38/42 , Y10T428/12799
摘要： PROBLEM TO BE SOLVED: To provide a high-tensile steel sheet having a tensile strength of 1180 MPa or higher while securing excellent resistance weldability for sufficient and stable joint strength of a weld zone by resistance welding, and to provide a joining process for the high-tensile steel sheet. SOLUTION: The high-tensile steel sheet comprises, by mass, 0.15 to 0.25% of C, 0.1 to 2.5% of Si, 0.10 to 1.0% of Mn and 0.5 to 3.5% of Cr, and satisfies a content ratio of Mn/(Mn+Cr) COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：要解决的问题：为了提供抗拉强度为1180MPa以上的高强度钢板，同时通过电阻焊接确保焊接区域的充分稳定的接合强度的良好的电阻可焊性，并提供接合工序用于高强度钢板。解决方案：高强度钢板以质量计含有0.15至0.25％的C，0.1至2.5％的Si，0.10至1.0％的Mn和0.5至3.5％的Cr，并且满足下列条件的含量比：的Mn /（MN + Cr）的<0.50。优选地，作为杂质成分的P和S优选分别以质量计抑制为0.02％和≤0.01％，进而将Ni，0.1〜3.0％，Cu：0.01〜3.0％，Al：0.001〜0.1％于此。版权所有（C）2008，JPO＆INPIT

5. 发明专利

JP2007308744A Warm press formed high-strength member, and its manufacturing method 有权
标题翻译：压铸成型高强度会员及其制造方法
公开(公告)号：JP2007308744A
公开(公告)日：2007-11-29
申请号：JP2006137232
申请日：2006-05-17
申请人： National Institute For Materials Science , Nissan Motor Co Ltd , 日産自動車株式会社 , 独立行政法人物質・材料研究機構
发明人： NAKANISHI EIZABURO , ONO KIMIMOTO , SASAOKA HIDEYUKI , OKADA YOSHIO , INOUE TADANOBU , KIMURA YUJI , NAGAI HISASHI
IPC分类号： C22C38/00 , B21B3/00 , B21D22/20 , C21D9/46 , C22C38/34
摘要： PROBLEM TO BE SOLVED: To provide a warm press formed high-strength member having high strength and excellent dimensional accuracy in forming a member and also to provide its manufacturing method.
SOLUTION: The warm press formed high-strength member can be obtained by subjecting a high-strength steel sheet of ≥980 MPa tensile strength to press forming in a warm temperature region, and the high-strength steel sheet has plastic deformability of ≥1 logarithmic strain. The method for manufacturing the warm press formed high-strength member includes: (1) a step of preparing a high-strength steel sheet of ≥980 MPa tensile strength; (2) a step of forming a plastic-deformed section having ≥1 logarithmic strain in the whole or a part of the high-strength steel sheet to obtain a strain-holding high-strength steel sheet having the plastic-deformed section; and (3) a step of press forming the strain-holding high-strength steel sheet in a warm temperature region to obtain the warm press formed high-strength member.
COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：要解决的问题：提供一种在形成构件时具有高强度和优异的尺寸精度的热压成形的高强度构件，并提供其制造方法。解决方案：通过对≥980MPa的拉伸强度的高强度钢板在温暖区域进行冲压加工，可以得到热压成型的高强度部件，高强度钢板具有塑性变形性 ≥1对数应变。制造热压成形的高强度部件的方法包括：（1）制备抗拉强度≥980MPa的高强度钢板的工序; （2）在高强度钢板的全部或一部分中形成具有≥1对数应变的塑性变形部的步骤，以获得具有塑性变形部的应变保持高强度钢板; （3）在温暖区域中压制成形为应变保持用高强度钢板的工序，得到加压成型的高强度部件。版权所有（C）2008，JPO＆INPIT

6. 发明专利

JP2005179753A Non-heat treated steel for crank shaft 审中-公开
标题翻译：用于起重机的非热处理钢
公开(公告)号：JP2005179753A
公开(公告)日：2005-07-07
申请号：JP2003423775
申请日：2003-12-19
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： KATO SHINICHIRO , HANIYUDA TOMONORI , OGAWA JUNPEI , MIYAZAWA TOMONORI , OKADA YOSHIO
IPC分类号： B21J5/00 , B21K1/08 , C22C38/00 , C22C38/42 , C22C38/60
摘要： PROBLEM TO BE SOLVED: To provide a non-heat treated steel for a crank shaft which has adequate strength characteristics and machinability though containing no expensive V.
SOLUTION: The non-heat treated steel for the crank shaft has a composition comprising, by wt.%, 0.35-0.55% C, 0.4-2% Si, 0.4-1.5% Mn, 0.01-0.1% P, 0.05-1% Cu, 0.05-1% Ni, 0.01-1% Cr, 0.005-0.05% s-Al, 0.005-0.030% N and the balance substantially Fe; has a structure of ferrite plus pearlite after having been hot-forged; and has a yield strength ratio of 0.50 or higher, which is the ratio of yield strength to tensile strength obtained from a tensile test at room temperature after having been hot-forged, and such a work hardening coefficient as to satisfy 0.1 to 0.4.
COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：提供一种用于曲轴的非热处理钢，其具有足够的强度特性和可加工性，但不含昂贵的V.解决方案：用于曲轴的非热处理钢具有组合物，其包含以重量％计，0.35-0.55％C，0.4-2％Si，0.4-1.5％Mn，0.01-0.1％P，0.05-1％Cu，0.05-1％Ni，0.01-1％Cr， 0.005-0.05％s-Al，0.005-0.030％N，余量基本上为Fe; 热锻后具有铁素体和珠光体的结构; 并且其屈服强度比为0.50以上，这是从热锻后的室温下的拉伸试验得到的屈服强度与拉伸强度的比，并且这样的加工硬化系数为0.1〜0.4。版权所有（C）2005，JPO＆NCIPI

7. 发明专利

JP2005059013A Method for producing forged product for high strength connecting rod with easy fracture separation 审中-公开
$Method for producing forged product for high strength connecting rod with easy fracture separation$
标题翻译：用于生产用于高强度连接杆的锻造产品的方法，具有易碎的分离
公开(公告)号：JP2005059013A
公开(公告)日：2005-03-10
申请号：JP2003207393
申请日：2003-08-12
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： KATO SHINICHIRO , OGAWA JUNPEI , MIYAZAWA TOMONORI , OKADA YOSHIO
IPC分类号： B21K1/14 , B21J1/02 , B21J5/00 , B21J5/02 , C21D1/18 , C21D1/42 , C21D9/00 , C22C38/00 , C22C38/34 , C22C38/60
CPC分类号： Y02P10/253
摘要： PROBLEM TO BE SOLVED: To provide a method with which a forged product for connecting rod with easy fracture separation at a large end part and excellent in the durability in the connecting part can be produced at a low cost. SOLUTION: A ferrite-pearlite type non-heat treated steel has the composition composed by wt% of 0.2-0.6% C, 0.05-2% Si, 0.3-1.5% Mn, 0.01-0.2% P, 0.05-1% Cr, 0.02-0.5% V, 0.009-0.03% N, and the balance Fe with inevitable impurities, is used as a blank. After forming a preformed material for connecting rod with the hot-forging, a cold-coining is partially applied to the connecting part of the preformed material and thereafter, an aging treatment is partially applied to the connecting part with a high frequency induction-heating. COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：提供一种方法，其可以以低成本制造在大端部具有容易断裂分离的连杆的锻造产品并且连接部件的耐久性优异的方法。解决方案：铁素体 - 珠光体型非热处理钢的组成按重量％计为0.2-0.6％C，0.05-2％Si，0.3-1.5％Mn，0.01-0.2％P，0.05-1 ％Cr，0.02-0.5％V，0.009-0.03％N，余量为不可避免的杂质的Fe用作空白。在形成用于连接杆与热锻件的预成型材料之后，将冷压缩部分地施加到预成型材料的连接部分上，之后，通过高频感应加热部分地对连接部件施加时效处理。版权所有（C）2005，JPO＆NCIPI

8. 发明专利

JP2004286196A High-strength connecting rod and its manufacturing method 有权
公开(公告)号：JP2004286196A
公开(公告)日：2004-10-14
申请号：JP2003082505
申请日：2003-03-25
申请人： Nissan Motor Co Ltd , 日産自動車株式会社
发明人： OGAWA JUNPEI , MIYAZAWA TOMONORI , OKADA YOSHIO , IKEUCHI ATSUSHI , YAMAGUCHI MASAFUMI
IPC分类号： F16C7/02 , C21D1/18 , C21D9/00 , C22C38/00 , C22C38/34 , C22C38/60
摘要： PROBLEM TO BE SOLVED: To provide a high-strength connection rod having improved fatigue strength and a lighter weight, and its manufacturing method.
SOLUTION: The connection rod comprises a connection part B as a connection rod body, a large end part C and a small end part A located at both ends of the connection part, and link parts E, F provided between each of the large end part C and the small end part A and the connection part B, the link parts E, F each having a sectional area continuously reduced as tending to the connection part B and the connection part B having the minimum sectional area portion. A portion having the lowest fatigue strength exists at the large end part C or the small end part A and portions having fatigue strength changing exist in the link parts E, F and the connection part B. The product of the sectional area of the cross section of each of the link parts E, F and the connection part B and fatigue strength is greater than the product of the sectional area at the minimum sectional area portion of the connection part B and fatigue strength.
COPYRIGHT: (C)2005,JPO&NCIPI

9. 发明专利

JP2004190715A Cam lobe for assembled camshaft and its manufacturing method 有权
公开(公告)号：JP2004190715A
公开(公告)日：2004-07-08
申请号：JP2002356534
申请日：2002-12-09
申请人： Nissan Motor Co Ltd , 日産自動車株式会社
发明人： KOYANAGI KOJI , MABUCHI YUTAKA , OKADA YOSHIO , NISHIMURA KIMIO , MORIYA SATORU , OBARA YUJIRO , TAKANO YUTAKA
IPC分类号： F01L1/04 , F16H53/02
摘要： PROBLEM TO BE SOLVED: To provide a cam lobe for an assembled camshaft with competitive manufacturing costs capable of preventing breaks caused by extending works of a tube.
SOLUTION: The cam lobe 30 comprises a base circle portion 31 arranged on a through-hole 32, and a nose 34 extending outward to a radial direction rather than the base circle portion 31. The cam lobe 30 is fastened on an outer periphery of a shaft material by radially extending the shaft material after inserting the circle-shaped shaft material into the through-hole 32. A material of the cam lobe is composed of case hardening steel, and surface hardening treatment is applied to the cam lobe after it is formed to a cam shape. The relationship of a radial thickness T (mm) between an inner periphery of the through-hole 32 and an outer periphery of the base circle 31 with a radial depth D (mm) within a range having hardness of 550HV or more around the inner periphery of the through-hole 32 satisfies an expression of D≤0.4167T-1.0 (however, T≥2.4).
COPYRIGHT: (C)2004,JPO&NCIPI

10. 发明专利

JP2008150704A Magnesium alloy material and production thereof 有权
标题翻译：镁合金材料及其生产
公开(公告)号：JP2008150704A
公开(公告)日：2008-07-03
申请号：JP2007297953
申请日：2007-11-16
申请人： Kobe Steel Ltd , Kumamoto Univ , Nissan Motor Co Ltd , 国立大学法人熊本大学 , 日産自動車株式会社 , 株式会社神戸製鋼所
发明人： NAKADA MAMORU , YAMADA YUICHI , ITAKURA KOJI , OKADA YOSHIO , KAWAMURA YOSHIHITO , YAMAZAKI TOMOAKI
IPC分类号： C22C23/06 , B21C23/00 , B21J5/00 , C22C23/04 , C22F1/00 , C22F1/06
CPC分类号： C22C23/06 , C22C23/04 , C22F1/06
摘要： PROBLEM TO BE SOLVED: To produce a magnesium alloy material excellent in mechanical properties without using any special production apparatus or processes. SOLUTION: This magnesium alloy material composed of an Mg-Zn-FE alloy contains essential components in the form of 0.5 to 3 atomic% of Zn and 1 to 5 atomic% of RE, with the remainder comprising Mg and unavoidable impurities. the Mg-Zn-RE alloy has a lamellar phase formed from a long period stacking ordered structure and α-Mg in the alloy structure thereof. The long period stacking ordered structure has at least one of a curved portion and a bent portion and has a divided portion in at least a portion thereof. COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：要解决的问题：在不使用任何特殊的生产设备或方法的情况下，制造机械性能优异的镁合金材料。解决方案：由Mg-Zn-FE合金构成的镁合金材料含有0.5〜3原子％的Zn和1〜5原子％的RE的必要成分，其余为Mg和不可避免的杂质。 Mg-Zn-RE合金在其合金结构中具有由长周期堆积有序结构形成的层状相和α-Mg。长周期层叠结构具有弯曲部分和弯曲部分中的至少一个，并且在其至少一部分中具有分割部分。版权所有（C）2008，JPO＆INPIT

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