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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

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

3. 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

4. 发明专利

JP2007092102A Case-hardening steel and carburizing part using the same (especially differential gear) 审中-公开
标题翻译：使用其的硬化钢和加固部分（特殊差速器）
公开(公告)号：JP2007092102A
公开(公告)日：2007-04-12
申请号：JP2005280838
申请日：2005-09-27
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： MIURA NAOMI , HAYASHI TAKAO , OKADA YOSHIO , MIYAZAKI TAKAHIRO , HATTORI ATSUSHI , KANO TAKASHI
IPC分类号： C22C38/00 , C21D1/06 , C21D6/00 , C21D9/32 , C22C38/32 , C23C8/22 , F16H55/06
摘要： PROBLEM TO BE SOLVED: To provide a case-hardening steel provided with excellent impact fatigue strength and a carburized part using the same (especially a differential gear). SOLUTION: This case-hardening steel is composed, by mass, of 0.10-0.30% C, ≤0.10% Si, 0.3-0.85% Mn, 0.002-0.015% P, ≤0.015% S, 0.30-0.65% Cr, 0.10-1.00% Mo, 0.0005-0.0035% B, 0.015-0.100% Nb, 0.01-0.1% Al and the balance Fe with inevitable impurities, and satisfies the formula (1); 2.0≤10Si(%)+Cr(%)+Mn(%)+Mo(%)≤30. COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：提供具有优异的冲击疲劳强度的表面硬化钢和使用其的渗碳部件（特别是差速齿轮）。 <硬质钢>该硬质合金钢按质量计含有0.10〜0.30％的C，≤0.10％的Si，0.3-0.85％的Mn，0.002-0.015％的P，≤0.015％的S，0.30-0.65％的Cr ，0.10-1.00％Mo，0.0005-0.0035％B，0.015-0.100％Nb，0.01-0.1％Al，余量为Fe和不可避免的杂质，并满足式（1）; 2.0≤10Si（％）+的Cr（％）+的Mn（％）+的Mo（％）≤30。版权所有（C）2007，JPO＆INPIT

5. 发明专利

JP2005036310A Non-heat-treated steel for induction-hardened connecting rod which easily enables fracture-separation 有权
$Non-heat-treated steel for induction-hardened connecting rod which easily enables fracture-separation$
标题翻译：用于诱导硬化连接的非热处理钢，易于使用的断裂分离
公开(公告)号：JP2005036310A
公开(公告)日：2005-02-10
申请号：JP2004126100
申请日：2004-04-21
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： INOUE KOICHIRO , OGAWA JUNPEI , MIYAZAWA TOMONORI , OKADA YOSHIO
IPC分类号： F16C7/02 , C22C38/00 , C22C38/58 , C22C38/60
摘要： PROBLEM TO BE SOLVED: To provide a non-heat-treated steel for induction-hardened connecting rod which easily enables fracture-separation, which can inexpensively manufacture the connecting rod employing few steps and little time and imparts a sufficiently high strength to the connecting rod.
SOLUTION: The non-heat-treated steel is for the connecting rod which is manufactured by subjecting a big end to fracture-separation and a junction between the big end and a small end to induction hardening. The steel comprises 0.3-0.5 wt.% C, 0.1-1.5 wt.% Si, 0.5-1.8 wt.% Mn, 0.03-0.15 wt.% P, 0.01-0.5 wt.% Cu, 0.01-0.5 wt.% Ni, 0.01-0.8 wt.% Cr, 0.0001-0.005 wt.% s-B, 0.005-0.15 wt.% Ti, 0.001-0.03 wt.% s-Al and the balance being Fe and unavoidable impurities.
COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：为了提供一种易于进行断裂分解的感应淬火连杆的非热处理钢，其能够以少量的步骤和很少的时间廉价地制造连杆并赋予足够高的强度连杆。解决方案：未经热处理的钢用于通过使大端断裂并且将大端与小端之间的接合进行感应淬火制造的连杆。钢包含0.3-0.5重量％的C，0.1-1.5重量％的Si，0.5-1.8重量％的Mn，0.03-0.15重量％的P，0.01-0.5重量％的Cu，0.01-0.5重量％的Ni ，0.01-0.8重量％的Cr，0.0001-0.005重量％的sB，0.005-0.15重量％的Ti，0.001-0.03重量％的s-Al，余量是Fe和不可避免的杂质。版权所有（C）2005，JPO＆NCIPI

6. 发明专利

JP2007231305A Carburized component and carburized gear 审中-公开
标题翻译：加固组件和加固齿轮
公开(公告)号：JP2007231305A
公开(公告)日：2007-09-13
申请号：JP2006050906
申请日：2006-02-27
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： MIYAZAKI TAKAHIRO , KANO TAKASHI , KIYOHARA NAOMI , HAYASHI TAKAO , OKADA YOSHIO
IPC分类号： C22C38/00 , C21D1/06 , C21D9/32 , C22C38/38 , C22C38/58 , C23C8/22 , F16H55/06
摘要： PROBLEM TO BE SOLVED: To provide a carburized gear such as a pinion mate gear composing an automobile differential gear, in which wear resistance and impact resistance fatigue strength are made consistent.
SOLUTION: The carburized component is obtained by subjecting a case hardening steel as the material having a composition comprising, by weight, 0.1 to 0.3% C, ≤1.5% Si, 0.3 to 1.8% Mn, 0.3 to 1.5% Cr, ≤0.80% Mo, ≤0.05% Ti, ≤0.05% Al, ≤0.01% N, 0.01 to 0.10% Nb and 0.0005 to 0.0035% B, comprising ≤0.015% P and ≤0.020% S, and the balance Fe with inevitable impurities, forming into a component shape, and successively subjecting the same to carburizing treatment. The component has carbon profiles in which the concentration of C is 0.5 to 0.8% and also the depth of the C concentration 0.4% is 0.15 to 0.55 mm.
COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：提供一种渗碳齿轮，例如构成汽车差速齿轮的小齿轮配合齿轮，其中使耐磨性和抗冲击疲劳强度一致。解决方案：渗碳组分是通过将表面硬化钢作为具有包含重量比为0.1至0.3％C，≤1.5％Si，0.3至1.8％Mn，0.3至1.5％Cr， ≤0.80％Mo，≤0.05％Ti，≤0.05％Al，≤0.01％N，0.01〜0.10％Nb和0.0005〜0.0035％B，含有≤0.015％P和≤0.020％S，余量为Fe与不可避免的杂质，形成部件形状，并依次进行渗碳处理。该组分具有C浓度为0.5〜0.8％，C浓度为0.4％的深度为0.15〜0.55mm的碳分布。版权所有（C）2007，JPO＆INPIT

7. 发明专利

JP2007119819A Non-heat treated steel for connecting rod, and connecting rod 审中-公开
标题翻译：用于连接杆和连接杆的非热处理钢
公开(公告)号：JP2007119819A
公开(公告)日：2007-05-17
申请号：JP2005311365
申请日：2005-10-26
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： AIHARA KAZUISHI , YAMADA YUICHI , MIYAZAWA TOMONORI , USUKI HIDEKI , OKADA YOSHIO , KATO SHINICHIRO , HAYAISHI MASAKAZU
IPC分类号： C22C38/00 , C21D9/00 , C22C38/34 , C22C38/60 , F16C7/02
CPC分类号： C22C38/02 , C22C38/002 , C22C38/04 , C22C38/24 , C22C38/60 , F16C7/02 , F16C33/121
摘要： PROBLEM TO BE SOLVED: To provide non-heat treated steel for connecting rod by which machinability and proof stress can be secured and which is suited to separation by fracturing and also to provide a connecting rod made of the steel.
SOLUTION: The connecting rod has a composition containing 0.3 to 0.8% C, 0.1 to 2.0% Si, 0.5 to 1.5% Mn, 0.01 to 0.15% P, ≤1.0% Cr, ≤0.4% V, ≤0.05% Al and 0.005 to 0.03% N. In this connecting rod, a value, which is computed from hardness (HRC), P content (%) and carbon equivalent Ceq (represented by Ceq=C+0.166Si+0.22Mn+0.25Cr+1.8V) based on [2804-1549×Ceq+8862×P(%)-23.4×hardness(HRC)], is made to ≤150.
COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：为了提供用于连杆的非热处理钢，其可以确保可加工性和抗应力，并且适合于通过压裂分离，并且还提供由钢制成的连杆。
解决方案：连杆具有含有0.3〜0.8％C，0.1〜2.0％Si，0.5〜1.5％Mn，0.01〜0.15％P，≤1.0％Cr，≤0.4％V，≤0.05％Al 和0.005〜0.03％N。在该连杆中，由硬度（HRC），P含量（％）和碳当量Ceq（由Ceq = C + 0.166Si + 0.22Mn + 0.25Cr + 1.8 基于[2804-1549×Ceq + 8862×P（％）-23.4×硬度（HRC）]的比例V）为≤150。版权所有（C）2007，JPO＆INPIT

8. 发明专利

JP2006052432A Method for manufacturing forged product for connecting rod easily separated through rupture and having high-strength 审中-公开
标题翻译：用于制造连接轻度分离破裂并具有高强度的硬化产品的方法
公开(公告)号：JP2006052432A
公开(公告)日：2006-02-23
申请号：JP2004233662
申请日：2004-08-10
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： OGAWA JUNPEI , MIYAZAWA TOMONORI , OKADA YOSHIO , KATO SHINICHIRO
IPC分类号： C21D8/00 , B21J5/02 , B21K1/14 , C22C38/00 , C22C38/34 , C22C38/60 , F16C7/02
摘要： PROBLEM TO BE SOLVED: To provide a method for manufacturing a forged product for a connecting rod which is easily separated through rupture and has high-strengths, by efficiently strengthening only an articulated part to which high yield strength and high fatigue strength are required, without greatly spending an energy cost, a machining cost, a material cost and a die cost.
SOLUTION: A material for the forged product is a ferrite/pearlite type non-heat treated steel which has a composition comprising, by mass%, 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. The method for manufacturing the forged product comprises the steps of: hot-forging the above material into a roughly formed body for the connecting rod; and then coining the articulated part of the roughly formed body at a temperature ranging from 200 to 700°C and at a processing rate of 3 to 40% without applying distortion to a large end, in the cooling process, while simultaneously performing shape correction and strain ageing, to strengthen the articulated part.
COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：解决问题的方案：提供一种用于制造连杆的锻造产品的方法，所述锻造产品易于通过断裂分离并具有高强度，只有通过有效地加强仅具有高屈服强度和高疲劳强度的铰接部分需要，而不会大量消耗能源成本，加工成本，材料成本和模具成本。＆lt; P＆gt;解决方案：锻造产品的材料是铁素体/珠光体型非热处理钢，其组成包括质量％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Fe与不可避免的杂质。制造锻造品的方法包括以下步骤：将上述材料热锻成用于连杆的大致成形体; 然后在冷却过程中，在200〜700℃的温度范围和3〜40％的加工速度下，将大致成形体的铰接部分压实，同时进行形状校正，应变老化，加强铰接部位。版权所有（C）2006，JPO＆NCIPI

9. 发明专利

JP2005171334A Non-heattreated steel component manufacturing method, and non-heattreated steel component using the same 有权
标题翻译：非加热钢部件制造方法和使用其的非加热钢部件
公开(公告)号：JP2005171334A
公开(公告)日：2005-06-30
申请号：JP2003414154
申请日：2003-12-12
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： ITO JUICHI , YOSHIDA HIROAKI , ISOGAWA YUKIHIRO , OGAWA JUNPEI , MIYAZAWA TOMONORI , OKADA YOSHIO , IKEUCHI ATSUSHI
IPC分类号： B21J5/00 , B21J13/02 , C21D8/00 , C22C38/00 , C22C38/38 , C22C38/60
摘要： PROBLEM TO BE SOLVED: To provide a non-heattreated steel component and a method for manufacturing the same in which a high working ratio can be employed, the manufacturing efficiency is high, and the high proof stress can be ensured.
SOLUTION: Steel containing, by mass, ≥95% Fe, ≥0.18 and ≤0.45% C, ≥0.10% and ≤2.00% Si, ≥0.40% and ≤1.80% Mn, ≥0.05% and ≤0.50% Cr, ≥0.003% and ≤0.040% Al, and ≥0.005% and ≤0.020% N is heated to the temperature of ≥1,000°C and ≤1,300°C for austenizing. Thereafter, in order to satisfy the condition of 1-exp(-ε×(750÷Tp)
-10 )>0.8 with Tp as the preliminary working temperature and ε as the mean strain during the preliminary working, Tp and ε are set, and the preliminary working is performed. By forging a preliminarily worked body obtained by the preliminary working at the temperature of ≥680°C and ≤850°C, the normal working is performed to obtain the component shape, and the working ratio of the normal working is set to be ≥30% in the compression ratio.
COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：为了提供一种非加热处理的钢部件及其制造方法，其中可以使用高加工率，制造效率高，并且可以确保高的抗张力。
解决方案：含有≥95％Fe，≥0.18和≤0.45％C，≥0.10％和≤2.00％Si，≥0.40％和≤1.80％Mn，≥0.05％和≤0.50％Cr的钢，≥0.003％和≤0.040％的Al，≥0.005％和≤0.020％的N被加热到≥1000℃的温度和≤1,300℃的奥氏体化。此后，为了满足作为初步工作温度的Tp为1-exp（-ε×（750÷Tp） -10 ）> 0.8的条件，ε为初步加工期间的平均应变，设定Tp，ε，进行预备工作。通过锻造通过在≥680℃和≤850℃的温度下预备加工获得的预加工体，进行正常加工以获得部件形状，并且正常加工的加工比设定为≥30 ％的压缩比。版权所有（C）2005，JPO＆NCIPI

10. 发明专利

JP2003049238A Non-heat treated crankshaft steel for hot forging 有权
标题翻译：用于热锻的非热处理起重机钢
公开(公告)号：JP2003049238A
公开(公告)日：2003-02-21
申请号：JP2001241689
申请日：2001-08-09
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： NAKAJIMA TOMOYUKI , FUTAMURA TAKASHI , GOTO KATSUSHI , MIYAZAWA TOMONORI , OKADA YOSHIO , ITAKURA KOJI , YAMAGUCHI MASAFUMI , MORIYA SATORU
IPC分类号： C22C38/00 , C22C38/58 , C22C38/60
摘要： PROBLEM TO BE SOLVED: To provide inexpensive non-heat treated crankshaft steel for hot forging which can cope with a high output engine, and has high strength as well.
SOLUTION: The steel has steel components containing, by mass, >0.43 to 0.50% C, 0.10 to 1.00% Si, 0.10 to 2.00% Mn, ≤0.50% Cu, ≤0.20% Ni, 0.20 to 1.00% Cr and ≤0.05% Mo, and, if required, containing one or more kinds selected from ≤0.120% Si, ≤0.30% Pb, ≤0.01% Ca and ≤0.30% Bi, and the balance substantially Fe, and also satisfying C+Si/6+Mn/4.5+Cu/15+Ni/15+Cr/4+Mo/2.5≥0.74.
COPYRIGHT: (C)2003,JPO
摘要翻译：要解决的问题：为了提供可以处理高输出发动机的热锻造的廉价的非热处理曲轴钢，并且具有高强度。解决方案：钢具有以质量计含有C：0.43〜0.50％，Si：0.10〜1.00％，Mn：0.10〜2.00％，Cu：0.20％以下，Ni：0.20〜1.00％ = 0.05％Mo，如果需要，含有选自<= 0.120％Si，<= 0.30％Pb，<= 0.01％Ca和<= 0.30％Bi中的一种或多种，余量基本上为Fe，并且还满足 C + Si / 6 + Mn / 4.5 + Cu / 15 + Ni / 15 + Cr / 4 + Mo / 2.5> = 0.74。

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