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11. 发明专利

JP2009221590A Fracture split connecting rod, and non-heat treated steel used therefor 审中-公开
标题翻译：断裂连接杆及其使用的非热处理钢
公开(公告)号：JP2009221590A
公开(公告)日：2009-10-01
申请号：JP2008070641
申请日：2008-03-19
申请人： Daido Steel Co Ltd , Honda Motor Co Ltd , 大同特殊鋼株式会社 , 本田技研工業株式会社
发明人： ASAI TETSUYA , KOGURE RYOSUKE , SUGITA HIROSHI , HOBO MAKOTO , TAKADA KATSUNORI , NAKAJIMA TOMOYUKI , KANO TAKASHI , TSUDA MASASHI
IPC分类号： C22C38/00 , C22C38/14 , C22C38/60 , F16C7/02
CPC分类号： F16C9/045
摘要： PROBLEM TO BE SOLVED: To provide a fracture split connecting rod, wherein fracture splittability and machinability are satisfactory, and the forging finishing temperature capable of sufficiently securing hardness after forging is made low, thus variation in the proof stress of parts is reduced, and forging efficiency is satisfactory.
SOLUTION: In the composition of a non-heat treated steel serving as the constituting stock of the fracture split connecting rod 1, sufficient proof stress and fracture splittability are secured by optimizing the contents of C, V, P and Ti. By making the content of Ti lower than the content level in the conventional non-heat treated steel for a fracture split connecting rod, the forging finishing temperature for sufficiently securing hardness after forging is made lower, and the fracture split connecting rod in which variation in the proof stress of parts is reduced, and forging efficiency is also satisfactory is achieved. On the other hand, by optimizing an Mn content and an S content, an MnS forming amount in the steel structure contributing to the improvement of machinability is increased, and, cutting to a connecting rod shape after forging is efficiently performed.
COPYRIGHT: (C)2010,JPO&INPIT
摘要翻译：要解决的问题：为了提供一种断裂分裂连杆，其断裂分裂性和可切削性令人满意，并且能够使锻造后的硬度充分确定的锻造精加工温度降低，因此部件的抗应力变化减小，锻造效率令人满意。解决方案：在作为断裂分裂连接杆1的构成原料的非热处理钢的组成中，通过优化C，V，P和Ti的含量来确保足够的耐力和断裂分裂性。通过使Ti的含量低于用于断裂连接杆的常规非热处理钢中的含量水平，锻造后硬度足够确定的锻造结束温度降低，并且断裂连接杆的变形部件的抗压强度降低，锻造效率也令人满意。另一方面，通过优化Mn含量和S含量，有助于提高机械加工性的钢结构中的MnS形成量增加，并且有效地进行锻造后的连杆形状切断。版权所有（C）2010，JPO＆INPIT

12. 发明专利

JP2007308792A Carburized component and manufacturing method thereof 有权
标题翻译：加固组件及其制造方法
公开(公告)号：JP2007308792A
公开(公告)日：2007-11-29
申请号：JP2007035632
申请日：2007-02-16
申请人： Daido Steel Co Ltd , 大同特殊鋼株式会社
发明人： HATTORI ATSUSHI , KANO TAKASHI
IPC分类号： C22C38/00 , C21D1/06 , C21D9/32 , C22C38/18 , C22C38/26 , C23C8/22
CPC分类号： C23C8/22 , C22C38/02 , C22C38/04 , C22C38/18 , C23C8/80
摘要： PROBLEM TO BE SOLVED: To provide a carburized component having excellent surface fatigue resistivity (particularly, pitting resistance) by improving its softening resistance.
SOLUTION: The carburized component of the present invention is characterized by having a base metal containing C: 0.10% to 0.40%; Si: 0.05% to 0.8%; Mn: 0.35% to 1.2%; Cr: 2.0% to 6.0%; and remnant including Fe and inevitable impurities, having a carburized layer formed on a surface layer portion of the base metal, having a grain boundary oxidized layer depth of 1 μm or less on a surface thereof and an average C concentration SC of 1.5% to 4.0% at 25 μm deep from the surface, and adjusted so as to satisfy: 1.76SC-1.06 3 C type.
COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：要解决的问题：通过提高其耐软化性来提供具有优异的表面疲劳电阻率（特别是耐点蚀性）的渗碳组分。解决方案：本发明的渗碳组分的特征在于含有C：0.10％至0.40％的贱金属; Si：0.05〜0.8％ Mn：0.35〜1.2％ Cr：2.0％〜6.0％; 并且包含Fe和不可避免的杂质的残留物，其表面具有在基体金属的表面层部分上形成的渗碳层，其表面的晶界氧化层深度为1μm以下，平均C浓度SC为1.5〜4.0 ％，调整为满足：1.76SC-1.06 3 C型。版权所有（C）2008，JPO＆INPIT

13. 发明专利

JP2004359970A High-sulfur free-cutting steel 有权
公开(公告)号：JP2004359970A
公开(公告)日：2004-12-24
申请号：JP2003155987
申请日：2003-05-30
申请人： Daido Steel Co Ltd , 大同特殊鋼株式会社
发明人： HATTORI ATSUSHI , KANO TAKASHI
IPC分类号： C22C38/00 , C22C38/60
摘要： PROBLEM TO BE SOLVED: To provide high-sulfur free-cutting steel practically free from disadvantages, such as deterioration in surface characteristics due to falling of inclusions, reduction in airtightness, shortening of tool life and reduction in the finished accuracy of a machined surface.
SOLUTION: The steel has a composition containing Fe as a main component and containing, by mass, 0.03 to 0.2% C, 0.4 to 1% S, 0.5 to 3% Mn and ≤0.01% O and satisfying any of the following composition conditions (1) to (3): (1) when Ti content and oxygen content are represented by WTi (mass%) and WO, respectively, WTi is 0.006 to 0.050 mass% and 0.4≤WTi/WO≤4.5 is satisfied; (2) when Al content and oxygen content are represented by WAl (mass%) and WO, respectively, WAl is 0.0005 to 0.015 mass% and WAl/WO≤1.0 is satisfied; and (3) when Zr content and oxygen content are represented by WZr (mass%) and WO, respectively, WZr is 0.0005 to 0.015 mass% and WZr/WO≤1.0 is satisfied.
COPYRIGHT: (C)2005,JPO&NCIPI

14. 发明专利

JP2014077200A Cracking connecting rod and its manufacturing method 有权
标题翻译：破碎连杆及其制造方法
公开(公告)号：JP2014077200A
公开(公告)日：2014-05-01
申请号：JP2013250754
申请日：2013-12-04
申请人： Daido Steel Co Ltd , 大同特殊鋼株式会社
发明人： MIYAZAKI TAKAHIRO , NAKAJIMA TOMOYUKI , HOBO MAKOTO , KATO SHINICHIRO , KANO TAKASHI , YOSHIDA HIROAKI , FUJIWARA MASANAO , TSUDA MASASHI , YAMAGUCHI KATSUYA
IPC分类号： C22C38/00 , B21J5/00 , B21J5/02 , B21K1/14 , C21D9/00 , C22C38/60 , F16C7/02
摘要： PROBLEM TO BE SOLVED: To provide a cracking connecting rod containing a ferrite pearlite type non-heat treated steel and having high fatigue limit, and to provide its manufacturing method.SOLUTION: A cracking connecting rod is composed of a ferrite pearlite type non-heat treated steel containing 0.20 to 0.60% of C by mass% of additional elements of essential additional elements and optional additional elements, and has a big end part and a small end part engaging with a crankshaft and a piston respectively and a coining treatment handle part connecting these. C, N, Ti, Mn and Cr as essential additional elements and Si, P, S, V, Pb, Te, Ca and Bi as optional additional elements are added. For these additional elements, by mass%, Mn in a range of 0.30 to 1.50% and Cr in the range of 0.05 to 1.00% are added. Further N of 0.005 to 0.030% and Ti in the range of 0.20% or less with satisfying Ti≥3.4N+0.02 are contained. The cracking connecting rod contains Si of 2.0% or less, P of 0.2% or less, S of 0.02% or less, V of 0.50% or less, Pb of 0.30% or less, Te of 0.3% or less, Ca of 0.01% or less and Bi of 0.30% or less, and has 0.2% bearing force at the handle part of more than 700 MPa and 0.2% bearing force at the big end part of less than 650 MPa. The cracking connecting rod is manufactured through a coining step which is conducted by a coining treatment in temperature range of 250 to 600°C and with processing rate of 7% or more.
摘要翻译：要解决的问题：提供一种含有铁素体珍珠岩型非热处理钢并具有高疲劳极限的裂缝连杆，并提供其制造方法。解决方案：开裂连杆由铁素体珠光体型非热含有0.20〜0.60重量％附加元素的基本附加元素和任选的附加元素的处理钢，并且分别具有与曲轴和活塞接合的大端部和小端部，以及连接处理的压实处理手柄部分这些。 C，N，Ti，Mn和Cr作为必需的附加元素，并且添加作为任选的附加元素的Si，P，S，V，Pb，Te，Ca和Bi。对于这些附加元素，以质量％计，Mn在0.30〜1.50％的范围内，Cr在0.05〜1.00％的范围内。还含有0.005〜0.030％的N和0.20％以下的Ti，满足Ti≥3.4N+ 0.02。裂解连接棒含有2.0％以下的Si，0.2％以下的S，0.02％以下的S，0.50％以下的V，0.30％以下的Pb，0.3％以下的Te，0.01以下的Si ％以下，Bi为0.30％以下，手柄部的轴承力为0.2％以上，大端部的轴承力为小于650MPa时为0.2％左右。裂解连杆通过压铸步骤制造，压印步骤通过在250至600℃的温度范围和加工速率为7％或更高的压印处理进行。

15. 发明专利

JP2011084767A Method of producing cracking connecting rod 审中-公开
标题翻译：生产破碎连杆的方法
公开(公告)号：JP2011084767A
公开(公告)日：2011-04-28
申请号：JP2009237520
申请日：2009-10-14
申请人： Daido Steel Co Ltd , Honda Motor Co Ltd , 大同特殊鋼株式会社 , 本田技研工業株式会社
发明人： ASAI TETSUYA , HANADA YUKIO , SUGITA HIROSHI , MIYAZAKI TAKAHIRO , HOBO MAKOTO , NAKAJIMA TOMOYUKI , KANO TAKASHI
IPC分类号： C21D8/06 , B21J5/00 , B21K1/14 , C22C38/00 , C22C38/14 , C22C38/60 , F16C7/00
摘要： PROBLEM TO BE SOLVED: To provide a method of producing a cracking connecting rod by which a connecting rod member is obtained, the connecting rod member comprising a ferrite-pearlite type non-heat-treated steel and having excellent mechanical strength and excellent cracking performance as the cracking connecting rod.
SOLUTION: The method of producing the cracking connecting rod includes the steps of: preparing steel; heating the steel to the temperature range of 1,200-1,300°C; applying a hot forging to the steel to obtain a rough-forged material by applying a compression working achieving a working ratio of ≥50% to at least a prescribed portion of the steel at a temperature of ≥1,000°C; and cooling the rough-forged material at least at ≤5°C/s to give the ferrite-pearlite structure to the rough-forged material. Wherein, the steel is selected which contains as the indispensable elements, by mass%, C in the range of 0.16-0.35%, Si in the range of 0.1-1.0%, Mn in the range of 0.3-1.0%, P in the range of 0.040-0.070%, S in the range of 0.080-0.130%, V in the range of 0.10-0.35% and Ti in the rage of 0.08-0.20% and which provides the connecting rod member with at least ≥250 Hv hardness in the above prescribed portion.
COPYRIGHT: (C)2011,JPO&INPIT
摘要翻译：要解决的问题：为了提供一种制造连杆的连接杆的制造方法，所述连杆构件包括铁素体 - 珠光体型非热处理钢，并且具有优异的机械强度和优异的开裂性能作为开裂连杆。解决方案：制造裂缝连杆的方法包括以下步骤：制备钢; 将钢加热到1,200-1,300℃的温度范围; 通过在≥1000℃的温度下对钢的至少规定部分施加≥50％的加工率的压缩加工，对钢进行热锻造以获得粗锻材料; 并且将粗锻材料冷却至少≤5℃/ s，以将粗铁锻造材料的铁素体 - 珠光体结构。其中，选择含有作为不可或缺的元素的钢，以质量％计，在0.16-0.35％的范围内的Si，0.1-1.0％的Si，0.3-1.0％的Mn，在0.3-1.0％的范围内的P 范围为0.040-0.070％，S为0.080-0.130％范围，V为0.10-0.35％范围，Ti为0.08-0.20％，并提供至少≥250Hv硬度的连杆件在上述规定的部分。版权所有（C）2011，JPO＆INPIT

16. 发明专利

JP2010159486A Soft-nitriding crankshaft member and steel for soft-nitriding crankshaft 有权
标题翻译：柔软的起子起重机组件和软式起重机的钢铁
公开(公告)号：JP2010159486A
公开(公告)日：2010-07-22
申请号：JP2009275908
申请日：2009-12-03
申请人： Daido Steel Co Ltd , Honda Motor Co Ltd , 大同特殊鋼株式会社 , 本田技研工業株式会社
发明人： SAITO ISAMU , TAKITANI YOSHIHIRO , KATO SHINICHIRO , HOBO MAKOTO , KAMIYA KEIICHIRO , MIYAZAKI TAKAHIRO , KANO TAKASHI
IPC分类号： C22C38/00 , C21D1/06 , C21D9/30 , C22C38/42 , C22C38/50 , C23C8/26 , C23C8/30
CPC分类号： F16C3/06 , B21K1/08 , C23C8/32 , Y10T29/49286 , Y10T74/2173
摘要： PROBLEM TO BE SOLVED: To provide a soft-nitriding crankshaft member whose cost, production facility, fatigue strength and bending correctability are excellent, and to provide a steel for a soft-nitriding crankshaft used therefor. SOLUTION: The soft-nitriding crankshaft member is composed of a steel including, as essential additional elements, by mass, 0.25 to 0.32% C, 0.01 to 0.15% Si, 0.55 to 0.90% Mn, 0.10 to 0.60% Cu, 0.05 to 0.30% Ni and 0.10 to 0.20% Cr, and including, as optional additional elements, ≤0.05% Mo, ≤0.020% N, ≤0.020% s-Al and ≤0.020% Ti, and the balance Fe with inevitable impurities. The soft-nitriding crankshaft member mainly consists of a two-phase structure of ferrite and pearlite, wherein a soft-nitriding hard layer is applied at lest to a part of the surface of the steel with a ferrite area ratio as ≥50%. COPYRIGHT: (C)2010,JPO&INPIT
摘要翻译：要解决的问题：提供一种成本，生产设备，疲劳强度和弯曲矫正性优异的软氮化曲轴件，并提供用于其的软氮化曲轴用钢。软质渗流曲轴部件由含有以重量计，0.25〜0.32％C，0.01〜0.15％Si，0.55〜0.90％Mn，0.10〜0.60％Cu， 0.05〜0.30％的Ni和0.10〜0.20％的Cr，作为任选的附加元素，包括≤0.05％Mo，≤0.020％N，≤0.020％s-Al和≤0.020％Ti，余量为Fe和不可避免的杂质。软氮化曲轴构件主要由铁素体和珠光体的两相结构组成，其中软氮化硬层至少施加到钢的表面的一部分，铁素体面积比≥50％。版权所有（C）2010，JPO＆INPIT

17. 发明专利

JP2009131912A Shot peening method 有权
标题翻译：拍摄方法
公开(公告)号：JP2009131912A
公开(公告)日：2009-06-18
申请号：JP2007308049
申请日：2007-11-28
申请人： Daido Steel Co Ltd , Sintokogio Ltd , 大同特殊鋼株式会社 , 新東工業株式会社
发明人： ISHIKURA RYOHEI , KANO TAKASHI , KATO MAKIO , KOBAYASHI YUJI , UJIHASHI SATOSHI , OKUMURA KIYOSHI
IPC分类号： B24C1/10
CPC分类号： B24C1/10 , B24C1/086 , C21D1/26 , C21D7/06 , C21D2211/001 , C21D2211/008 , Y10T29/479
摘要： PROBLEM TO BE SOLVED: To provide a shot peening method giving a higher compressive residual stress compared to the conventional one to a workpiece, while inhibiting cutting erosion. SOLUTION: A projection material having the hardness higher within the limits of 50 to 250 HV than that of the workpiece is projected against the workpiece whose hardness HV(m) given by the following formulas (1) to (3) is 750 HV and more to give the workpiece high compressive residual stress of 1800 MPa and more, while the cutting erosion amount of the workpiece is suppressed to 5 μm and less. Formula (1): HV(m1)=äf(C)-f(T, t)}(1-γ R /100)+400×γ R /100, formula (2): f(C)=-660C 2 +1373C+278, and formula (3): f(T, t)=0.05T(logt+17)-318, where C is a surface layer C (carbon) concentration (mass%), T is tempering temperature (K), t is tempering hold time (hr), and γ R is remaining amount of austenite (volume%). COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：要解决的问题：提供一种喷射硬化方法，与传统的工件相比，在抑制切削侵蚀的同时，赋予比较高的压缩残余应力。＆lt; P＆gt;解决方案：具有比工件高50至250HV的硬度的高硬度的突起材料相对于由下式（1）至（3）给出的硬度HV（m）为750的工件投影 HV等多种工件，使工件的高压缩残余应力为1800MPa以上，同时将工件的切削侵蚀量抑制在5μm以下。式（1）：HV（m1）=äf（C）-f（T，t）}（1-γ R / 100）+ 400×γSB < 100，式（2）：f（C）= -606℃ + 1373℃+ 278和式（3）：f（T，t）= 0.05T（logt + 17）其中C是表面层C（碳）浓度（质量％），T是回火温度（K），t是回火保持时间（hr），γ R 是奥氏体的剩余量（体积％）。版权所有（C）2009，JPO＆INPIT

18. 发明专利

JP2008223064A High proof strength carburized steel and component for machine structure using the same 审中-公开
标题翻译：高强度强化钢和使用其的机械结构部件
公开(公告)号：JP2008223064A
公开(公告)日：2008-09-25
申请号：JP2007060983
申请日：2007-03-09
申请人： Daido Steel Co Ltd , Honda Motor Co Ltd , 大同特殊鋼株式会社 , 本田技研工業株式会社
发明人： KUSAKAI KATSUTO , TANAKA TAKASHI , HAYASHI HIDESATO , KANO TAKASHI
IPC分类号： C22C38/00 , C21D1/06 , C21D9/28 , C21D9/32 , C22B9/04 , C22B9/18 , C22B9/20 , C22C38/46 , C22C38/54 , C23C8/22 , C23C8/38
摘要： PROBLEM TO BE SOLVED: To provide a high proof strength carburized steel and a component for machine structure having high proof strength and restraining the lowering of shock resistance and toughness.
SOLUTION: In the high proof strength carburized steel having a carburize-quenching layer formed on the surface of the steel material composed, by mass%, of 0.30-0.60% C,
摘要翻译：要解决的问题：提供高强度渗碳钢和具有高抗强度并抑制抗冲击性和韧性降低的机械结构部件。解决方案：在具有以质量％计含有0.30-0.60％C，<2.00至4.00％Si，0.10-1.50％Si的钢材表面上形成的渗碳淬火层的高强度渗碳钢中， Mn，0.50-2.50％Ni，0.10-2.00％Cr，0.05-1.00％Mo和0.05-0.50％V，余量为Fe和不可避免的杂质; 渗碳淬火层的碳浓度X为0.6≤X≤0.7质量％，渗碳距离δ为0.8mm≤δ≤1.2mm，Si的偏析比（a）为1.00≤a≤1.30，残留上述钢材的γ量≤10体积％。版权所有（C）2008，JPO＆INPIT

19. 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

20. 发明专利

JP2004269912A High sulfur free-cutting steel 有权
公开(公告)号：JP2004269912A
公开(公告)日：2004-09-30
申请号：JP2003058474
申请日：2003-03-05
申请人： Daido Steel Co Ltd , 大同特殊鋼株式会社
发明人： HATTORI ATSUSHI , KANO TAKASHI
IPC分类号： C22C38/00 , C22C38/60
摘要： PROBLEM TO BE SOLVED: To provide a high sulfur free-cutting steel in which the formation of coarse sulfides and hard carbosulfides is suppressed while increasing the content of S, in its turn, machinability is extremely satisfactory, and also, deterioration in surface properties caused by the falling of inclusions, the reduction of air-tightness or the like are hardly caused. SOLUTION: The high sulfur free-cutting steel essentially consists of Fe, and comprises, by mass, 0.03 to 0.2% C, 0.4 to 1% S, 0.5 to 3% Mn and ≤0.01% O. Then, any of compositional conditions (1) to (3)expressed by the following is sufficed: (1), provided that the content of Ti is defined as WTi (mass%), and the content of oxygen as WO, WTi is, by mass, 0.01 to 0.12%, and also, WTi/WO ≥ 4.5 is satisfied; (2), provided that the content of Al is defined as WAl (mass%), and the content of oxygen as WO, WAl is 0.001 to 0.05%, and also, WTi/WO ≥ 0.05 is satisfied; (3), provided that the content of Zr is defined as WZr (mass%), and the content of oxygen as WO, WZr is 0.001 to 0.05%, and also, WZr/WO ≥ 0.05 is satisfied. Further, the total content of Ti and Zr is ≤0.12 mass%. COPYRIGHT: (C)2004,JPO&NCIPI

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