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1. 发明专利

JP2005171311A Non-heat treated crankshaft steel for hot forging 审中-公开
标题翻译：用于热锻的非热处理起重机钢
公开(公告)号：JP2005171311A
公开(公告)日：2005-06-30
申请号：JP2003412688
申请日：2003-12-11
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： MORIYA SATORU , MURAKAMI YOICHI , YOSHIKAWA MASAHIRO , KATO SHINICHIRO , HAYAISHI MASAKAZU
IPC分类号： F16C3/06 , C22C38/00 , C22C38/44
摘要： PROBLEM TO BE SOLVED: To provide non-heat treated crankshaft steel for hot forging which can be inexpensively produced without using V, and also has increased machinability.
SOLUTION: The non-heat treated crankshaft steel for hot forging has a composition containing, by weight, 0.27 to 0.43% C, 0.80 to 2.00% Si, 0.30 to 1.20% Mn, ≤0.035% P, ≤0.04% S, 0.20 to 1.00% Cr, ≤0.30% Cu, ≤0.25% Ni and ≤0.05% Mo, and the balance substantially Fe, and also satisfying the inequality of 0.78≤C+1/6×Si+1/4.5×Mn+1/15×Ni+1/4×Cr≤0.84, and has a ferrite+pearlite mixed structure in a state where air cooling is performed after hot forging.
COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：提供不经V加工可廉价生产的用于热锻的非热处理曲轴钢，并且还具有增加的切削性能。解决方案：用于热锻的未经热处理的曲轴钢具有以重量计含有0.27-0.43％的C，0.80-2.00％的Si，0.30到1.20％的Mn，≤0.035％的P，≤0.04％的S ，0.20〜1.00％的Cr，≤0.30％的Cu，≤0.25％的Ni和≤0.05％的Mo，余量基本上为Fe，满足0.78≤C+ 1/6×Si + 1 / 4.5×Mn + 1/15×Ni + 1/4×Cr≤0.84，并且在热锻后进行空气冷却的状态下具有铁素体+珠光体混合结构。版权所有（C）2005，JPO＆NCIPI

2. 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

3. 发明专利

JP2005120444A Steel to be cold-stamped, and member using it 审中-公开
标题翻译：要冷却的钢，以及使用它的成员
公开(公告)号：JP2005120444A
公开(公告)日：2005-05-12
申请号：JP2003357887
申请日：2003-10-17
申请人： Daido Steel Co Ltd , 大同特殊鋼株式会社
发明人： HAYAISHI MASAKAZU
IPC分类号： B21L9/04 , C22C38/00 , C22C38/38 , C22C38/58
摘要： PROBLEM TO BE SOLVED: To provide a steel to be cold-stamped, which has high toughness and an adequate surface quality of a stamped surface after having been cold-stamped.
SOLUTION: The steel to be cold-stamped comprisies at least one element selected from the group consisting of, by mass%, 0.6-0.9% C, 0.01-1.0% Si, 0.01-2.0% Mn, 0.60-8.00% Cr, 0.005-0.060% Nb, 0.05-0.50% V, 0.03-0.10% Al, 0.008-0.050% N (though when Al is included, N is also included), and the balance Fe with unavoidable impurities, so that a content (by mass%) of each element can satisfy the following expressions: a: 149+17×C+13×Si+6×Mn+1×Cr≤178 and b: 19-4×C+6×Si-1×Mn+9×Cr+6×(Al×N)-0.25×temper hardness (by HRC)≥5.
COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：提供一种待冷冲压的钢，其被冷冲压后具有高冲击强度和冲压表面的足够表面质量。解决方案：冷冲压钢包含至少一种选自质量％为0.6-0.9％C，0.01-1.0％Si，0.01-2.0％Mn，0.60-8.00％ Cr，0.005-0.060％Nb，0.05-0.50％V，0.03-0.10％Al，0.008-0.050％N（尽管包括Al，但也包括N），余量为Fe和不可避免的杂质，使得含量（质量％）可以满足以下表达式：a + 149×17×C + 13×Si + 6×Mn + 1×Cr≤178和b：19-4×C + 6×Si-1× Mn + 9×Cr + 6×（Al×N）-0.25×回火硬度（HRC）≥5。版权所有（C）2005，JPO＆NCIPI

4. 发明专利

JP2003034808A Method of improving life of cemented carbide tool for cutting 审中-公开
标题翻译：改善切割碳化物刀的寿命的方法
公开(公告)号：JP2003034808A
公开(公告)日：2003-02-07
申请号：JP2001225516
申请日：2001-07-26
申请人： Daido Steel Co Ltd , 大同特殊鋼株式会社
发明人： HAYAISHI MASAKAZU
IPC分类号： C22F1/00 , B22F3/24
摘要： PROBLEM TO BE SOLVED: To provide a method of improving the life of a cemented-carbide tool which is made by means of dispersing particles of a hard material such as WC or TiC into a metal matrix of Co or the like.
SOLUTION: This improving method is characterized by cryogenic treatment onto the cemented carbide tool, which means immersing the tool into liquid nitrogen for 1-10 hours to keep it at -196°C of the boiling point of liquid nitrogen, and then bringing it back to a room temperature atmosphere. The low temperature tempering, which usually accompanies the cryogenic treatment, is not performed.
COPYRIGHT: (C)2003,JPO
摘要翻译：要解决的问题：提供通过将诸如WC或TiC的硬质材料的颗粒分散在Co等的金属基体中而提高硬质合金刀具寿命的方法。解决方案：该改进方法的特征在于对硬质合金刀具进行低温处理，意味着将工具浸入液氮中1-10小时，使其保持在-196℃的液氮沸点，然后将其回到室温气氛。通常伴随低温处理的低温回火不进行。

5. 发明专利

JP2005068482A Element for belt cvt and its manufacturing method 审中-公开
标题翻译：皮带CVT及其制造方法的要素
公开(公告)号：JP2005068482A
公开(公告)日：2005-03-17
申请号：JP2003299262
申请日：2003-08-22
申请人： Daido Steel Co Ltd , 大同特殊鋼株式会社
发明人： HAYAISHI MASAKAZU
IPC分类号： F16G5/16 , C22C38/00 , C22C38/38 , C22C38/58 , C23C8/22
摘要： PROBLEM TO BE SOLVED: To provide an element for a belt CVT (continuously variable transmission) which can extend life of a precision metal punch die used for manufacturing the element, reduce processing and production costs and ensure a high impact value (toughness).
SOLUTION: The plate-like steel element for the belt CVT is composed of a punched product of a steel sheet having a composition comprising, by mass, 0.1-0.7% C, ≤1.5% Si, 0.2-2.0% Mn, 0.1-2.0% Cr, ≤0.030% (preferably ≤0.025%) P, ≤0.030% (preferably ≤0.010%) S, 0.003-0.100% Al, at least one chosen from 0.005-0.060% Nb, 0.008-0.050% N and 0.05-0.50% V and the balance being Fe and unavoidable impurities. After a carburization treatment, the surface part of the element achieves a C concentration of 0.75-1.50 mass%.
COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：为了提供可以延长用于制造元件的精密金属冲模的寿命的带CVT（无级变速器）的元件，降低加工和生产成本并确保高冲击值（韧性）。＆lt; P＆gt;解决方案：用于带CVT的板状钢元件由具有以质量计含有0.1-0.7％C，≤1.5％Si，0.2-2.0％Mn， 0.1-2.0％Cr，≤0.030％（优选≤0.025％）P，≤0.030％（优选≤0.010％）S，0.003-0.100％Al，至少一种选自0.005-0.060％Nb，0.008-0.050％N 和0.05-0.50％V，余量为Fe和不可避免的杂质。渗碳处理后，元素的表面部分的C浓度为0.75〜1.50质量％。版权所有（C）2005，JPO＆NCIPI

6. 发明专利

JP2004300531A High-toughness high-carbon steel for cold-punched product 审中-公开
公开(公告)号：JP2004300531A
公开(公告)日：2004-10-28
申请号：JP2003095660
申请日：2003-03-31
申请人： Daido Steel Co Ltd , 大同特殊鋼株式会社
发明人： HAYAISHI MASAKAZU , NAKAMURA TAKESHI
IPC分类号： F16G5/16 , C22C38/00 , C22C38/58 , F16G13/02
摘要： PROBLEM TO BE SOLVED: To provide a high-toughness high-carbon steel for a cold-punched product which yields a high-toughness punched product, shows a good surface property of the punched surface and requires no machining of the punched surface after the punching process.
SOLUTION: The high-toughness high-carbon steel for the cold-punched product has a composition comprising, by weight, 0.6-0.9% C, 0.01-1.0% Si, 0.01-2.0% Mn, 0.01-1.8% Cr, at least one chosen from 0.10-1.5% Ni and 0.05-0.4% Mo and the balance being Fe and unavoidable impurities and satisfies relation (1): 3.0≤3.2C(%)+1.5Si(%)+Ni(%)+2.0Mo(%)≤4.0 and relation (2): -2C(%)+Ni(%)+5Mo(%)≥-1.4.
COPYRIGHT: (C)2005,JPO&NCIPI

7. 发明专利

JP2007169704A Steel for element of belt type cvt, element of belt type cvt and method for producing the same 审中-公开
标题翻译：带式CVT元件钢，带式CVT的元件及其制造方法
公开(公告)号：JP2007169704A
公开(公告)日：2007-07-05
申请号：JP2005368160
申请日：2005-12-21
申请人： Daido Steel Co Ltd , 大同特殊鋼株式会社
发明人： HAYAISHI MASAKAZU
IPC分类号： C22C38/00 , C21D1/18 , C21D6/00 , C21D9/00 , C22C38/58 , F16G5/16
摘要： PROBLEM TO BE SOLVED: To provide a steel for an element of a belt type CVT (continuously variable transmission) which can obtain desired strength and toughness by quenching, and in which quenching strain upon quenching treatment and deformation thereby can be suppressed.
SOLUTION: The steel for an element has a composition comprising, by mass, 0.5 to 0.9% C, ≤1.5% Si, 0.2 to 2.0% Mn, 0.1 to 2.0% Cr, Al×N: ≥4.0×10
-5 (wherein, N: 0.008 to 0.050%), ≤0.025% (0.040%) P, ≤0.010% (0.020%) S, ≤3.0% Ni, ≤0.4% Mo, and the balance Fe with inevitable impurities, also, satisfying inequality (1), and can be subjected to quenching treatment by air cooling: inequality (1): coefficient A=-14+20C+4Si+6Mn+3Ni+2Cr+19Mo≥10.5.
COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：提供一种能够通过淬火获得期望的强度和韧性的带式CVT（无级变速器）的元件的钢，并且其中可以抑制淬火处理和变形的淬火应变。＆lt; P＆gt;解决方案：元素钢具有以质量计含有0.5-0.9％的C，≤1.5％的Si，0.2-2.0％的Mn，0.1到2.0％的Cr，Al×N：≥4.0×10 < SP> -5 （其中，N：0.008〜0.050％），≤0.025％（0.040％）P，≤0.010％（0.020％）S，≤3.0％Ni，≤0.4％Mo，余量（1）：系数A = -14 + 20C + 4Si + 6Mn + 3Ni + 2Cr +19Mo≥10.5，不可避免的杂质含有不可避免的杂质，也满足不等式（1），可以通过空气冷却进行淬火处理。版权所有（C）2007，JPO＆INPIT

8. 发明专利

JP2009061465A Metallic mold for cold forging and its manufacturing method 审中-公开
标题翻译：用于冷锻的金属模具及其制造方法
公开(公告)号：JP2009061465A
公开(公告)日：2009-03-26
申请号：JP2007230125
申请日：2007-09-05
申请人： Daido Amistar Co Ltd , Daido Steel Co Ltd , 大同アミスター株式会社 , 大同特殊鋼株式会社
发明人： HAYAISHI MASAKAZU , INOUE KOICHIRO , KOBAYASHI KIICHI , KITAGAWA TOSHIHIRO
IPC分类号： B21J13/02 , B24C1/10 , C21D7/06 , C23C8/38 , C23C14/06 , C23C28/04
摘要： PROBLEM TO BE SOLVED: To provide a metallic mold for cold forging which can suppress the galling of a formed product forged thereby by preventing a hardened film on the surface of thereof from wearing or exfoliating, and to provide its manufacturing method.
SOLUTION: The metallic mold 1 for cold forging is provided with a single layer or multi-layer hardened film 3 composed of one or more selected from groups, which is composed of; carbide, nitride or carbonnitride, containing one or more of group 4A (Ti,Zr,Hf), 5A group (V,Nb,Ta), 6A group (Cr,Mo,W) metals and the nitride containing one or more of 4A group (Ti,Zr,Hf), 5A group (V.Nb,Ta), 6A group (Cr,Mo,W) metals; and one or two of Si and Al on the metallic mold designed plane 2. The surface roughness Ra of the hardened film 3 is 0.05-0.50 μm even in the case of being measured in every direction.
COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：要解决的问题：提供一种用于冷锻的金属模具，其可以通过防止其表面上的硬化膜磨损或去角质来抑制锻造的成形产品的磨损，并提供其制造方法。解决方案：用于冷锻的金属模具1设置有由选自以下组中的一个或多个组成的单层或多层硬化膜3：包含4A族（Ti，Zr，Hf），5A族（V，Nb，Ta），6A族（Cr，Mo，W）金属中的一种或多种的碳化物，氮化物或碳氮化物，以及含有一种或多种4A （Ti，Zr，Hf），5A族（V.Nb，Ta），6A族（Cr，Mo，W）金属; 在金属模具设计平面2上的Si和Al中的一个或两个。即使在每个方向上测量，硬化膜3的表面粗糙度Ra为0.05-0.50μm。版权所有（C）2009，JPO＆INPIT

9. 发明专利

JP2006037197A Steel for structural use having excellent cold forgeability and chip-breakability 审中-公开
标题翻译：钢结构使用具有优异的可靠性和切割性
公开(公告)号：JP2006037197A
公开(公告)日：2006-02-09
申请号：JP2004222013
申请日：2004-07-29
申请人： Daido Steel Co Ltd , 大同特殊鋼株式会社
发明人： HAYASHI HIDESATO , HAYAISHI MASAKAZU
IPC分类号： C22C38/00 , C22C38/60
摘要： PROBLEM TO BE SOLVED: To provide a steel for structural use combining excellent cold forgeability and chip-breakability.
SOLUTION: The steel for structural use having excellent cold forgeability and chip-breakability has a composition comprising, by mass, 0.1 to 1% C, 0.5 to 0.2% Si, 0.1 to 1% Mn, 0.03 to 0.1% S, ≤0.0005% Al, 0.001 to 0.01% Ti, 0.001 to 0.005% O and 0.01 to 0.05% N, and the balance Fe with inevitable impurities. Also, in the steel structure after cold forging, the number of sulfide-based inclusions 1 parted to ≥3 pieces to the cogging direction, and in which the respective length in the cogging direction is ≤20 μm covers ≥40% to the whole number of the sulfide-based inclusions in the polished face.
COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：提供结合使用的钢，具有优异的冷锻性和断屑性。解决方案：具有优异的冷锻性和断屑性的结构用钢具有以质量计含有0.1〜1％C，0.5〜0.2％Si，0.1〜1％Mn，0.03〜0.1％S， ≤0.0005％Al，0.001〜0.01％Ti，0.001〜0.005％O和0.01〜0.05％N，余量为Fe与不可避免的杂质。此外，在冷锻后的钢结构中，相对于齿槽方向分割为≥3的硫化物系夹杂物1，齿槽方向的长度为≤20μm的数量相对于整个数量覆盖≥40％的抛光面中的硫化物系夹杂物。版权所有（C）2006，JPO＆NCIPI

10. 发明专利

JP2004068128A Steel for machine structural use having excellent chip crushability 审中-公开
公开(公告)号：JP2004068128A
公开(公告)日：2004-03-04
申请号：JP2002232425
申请日：2002-08-09
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： HAYAISHI MASAKAZU , KANO TAKASHI , YAMADA NORIYUKI , SHIIKI KATSUAKI
IPC分类号： C22C38/00 , C22C38/02 , C22C38/04 , C22C38/14 , C22C38/18 , C22C38/22 , C22C38/60
CPC分类号： C22C38/002 , C21D6/005 , C21D6/008 , C21D2211/004 , C21D2261/00 , C22C38/02 , C22C38/04 , C22C38/14 , C22C38/18 , C22C38/22 , C22C38/60
摘要： PROBLEM TO BE SOLVED: To provide free cutting steel which has excellent chip crushability in steel for machine structural use.
SOLUTION: The steel has an alloy composition comprising, by weight, 0.05 to 0.8% C, 0.01 to 2.5% Si, 0.1 to 3.5% Mn and 0.01 to 0.2% S, and comprising 0.0005 to 0.02% Ca or Ca+Mg, 0.002 to 0.010% Ti and/or 0.002 to 0.025% Zr and 0.0005 to 0.010% O, and the balance Fe with inevitable impurities. Then, MnS inclusions with a mean particle diameter of ≥1.0 μm are present by ≥5 pieces/mm
2 per 0.01% of the S content. In a microscopic field, the occupancy area of Ca-containing sulfide inclusions satisfying the condition of (area[μm
2 ]/aspect ratio)≥10 and also comprising ≥1.0 wt.% Ca lies within the range of 15 to 40% in the occupancy area of all sulfide inclusions.
COPYRIGHT: (C)2004,JPO

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