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11. 发明申请

US20080308195A1 Steel For Springs, Process Of Manufacture For Spring Using This Steel, And Spring Made From Such Steel 审中-公开
标题翻译：弹簧钢，弹簧制造工艺，使用这种钢和弹簧由这种钢制成
公开(公告)号：US20080308195A1
公开(公告)日：2008-12-18
申请号：US12097313
申请日：2006-12-11
申请人： Nao Yoshihara , Kazuhisa Kawata , Julie Mougin , Jacques Languillaume
发明人： Nao Yoshihara , Kazuhisa Kawata , Julie Mougin , Jacques Languillaume
IPC分类号： C21D9/02 , C22C38/20 , C22C38/22 , C22C38/34 , C22C38/40 , C22C38/42
CPC分类号： C22C38/02 , C21D8/06 , C21D9/02 , C21D2211/004 , C22C38/04 , C22C38/06 , C22C38/42 , C22C38/44 , C22C38/46 , C22C38/48 , C22C38/50
摘要： A spring steel with high fatigue resistance in air and in corrosive conditions and with high resistance to cyclic sag, having the composition in weight percent: C=0.45-0.70% Si=1.65-2.50% Mn=0.20-0.75% Cr=0.60-2% Ni=0.15-1% Mo=traces-1% V=0.003-0.8% Cu=0.10-1% Ti=0.020-0.2% Nb=traces-0.2% AI=0.002-0.050% P=traces-0.015% S=traces-0.015% O=traces-0.0020% N=0.0020-0.0110% the balance being iron, and impurities resulting from the steel making process, where the carbon equivalent Ceq content calculated according to the formula: Ceq %=[C %]+0.12 [Si %]+0.17 [Mn %]−0.1 [Ni %]+0.13 [Cr %]−0.24 [V %] is between 0.80 and 1.00%, and whose hardness, after quenching and tempering, is greater than or equal to 55 HRC.
摘要翻译：一种弹簧钢，在空气和腐蚀性条件下具有高耐疲劳性，耐循环松弛，重量百分比：C = 0.45-0.70％Si = 1.65-2.50％Mn = 0.20-0.75％Cr = 0.60- 2％Ni = 0.15-1％Mo =痕量-1％V = 0.003-0.8％Cu = 0.10-1％Ti = 0.020-0.2％Nb =痕量-0.2％AI = 0.002-0.050％P =痕量-0.015％ S =痕量-0.015％O =痕量-0.0020％N = 0.0020-0.0110％余量为铁，以及由炼钢工艺产生的杂质，其中根据下式计算的碳当量Ceq含量： Ceq％= [C％] + 0.12 [Si％] + 0.17 [Mn％] -0.1 [Ni％] + 0.13 [Cr％] -0.24 [ V％] <？in-line-formula description =“In-line Formulas”end =“tail”？>在0.80和1.00％之间，淬火回火后的硬度大于或等于55HRC。

12. 发明申请

US20130022491A1 HIGH-CARBON STEEL WIRE EXCELLENT IN WIRE DRAWABILITY AND FATIGUE PROPERTY AFTER WIREDRAWING 有权
标题翻译：高碳钢丝在线缠绕后的布线性和疲劳性能优异
公开(公告)号：US20130022491A1
公开(公告)日：2013-01-24
申请号：US13638722
申请日：2011-03-17
申请人： Hiroshi Oura , Nao Yoshihara
发明人： Hiroshi Oura , Nao Yoshihara
IPC分类号： C22C38/02 , C22C38/32 , C22C38/16 , C22C38/20 , C22C38/04 , C22C38/06
CPC分类号： C21D8/06 , C21D8/065 , C21D2211/004 , C21D2211/009 , C22C38/001 , C22C38/002 , C22C38/02 , C22C38/06 , C22C38/16 , C22C38/32
摘要： Provided is a high-carbon steel wire which gives steel wires having high strength and has excellent suitability for wiredrawing and which after being wiredrawn, has excellent fatigue properties. The high-carbon steel wire has an adequately regulated chemical composition and has a pearlite structure in an areal proportion of 90% or more. In 2,000 μm2 of the pearlite structure, the number of BN compound grains having an equivalent-circle diameter of 100 nm or more but less than 1,000 nm is 100 or less (including 0) and the number of BN compound grains having an equivalent-circle diameter of 1,000 nm or more is 10 or less (including 0).
摘要翻译：本发明提供一种高强度钢丝，其具有强度高，拉丝性优异的钢丝，并且在拉丝后具有优异的疲劳特性。高碳钢丝具有适度调节的化学成分，并具有90％以上的面积比例的珠光体组织。在2000μm2的珠光体组织中，当量圆直径为100nm以上且小于1000nm的BN化合物粒子的数量为100以下（包括0），具有等效圆的BN化合物粒子数 1000nm以上的直径为10以下（包括0）。

13. 发明授权

US08192562B2 Spring steel wire excellent in fatigue characteristic and wire drawability 失效
标题翻译：弹簧钢丝疲劳特性和拉丝性优异
公开(公告)号：US08192562B2
公开(公告)日：2012-06-05
申请号：US12444001
申请日：2007-10-30
申请人： Nao Yoshihara
发明人： Nao Yoshihara
IPC分类号： C22C38/00 , C22C38/28 , C22C38/32
CPC分类号： C21D8/06 , C21D9/52 , C22C38/00
摘要： An object of the preset invention is to provide a spring steel wire that: shows excellent wire drawability not only when it is used as a spring steel wire for cold-winding formed into a steel spring by applying quenching and tempering treatment after wiredrawing but also when it is used as a spring steel wire for cold-winding formed into a steel spring as it is wiredrawn; and secures a spring having an excellent fatigue characteristic after the spring steel wire is formed into the spring. The spring steel wire according to the present invention is a spring steel wire excellent in fatigue characteristic and wire drawability, wherein: the contents of C, Si, Mn, Cr, Ti, B, and other elements are specified; the contents (mass %) of B, Ti, and N satisfy the expression (1) below; the amount of solid solute B is in the range of 0.0005% to 0.0040%; the remainder in the spring steel wire is composed of Fe and unavoidable impurities; and the solid solute B concentrates at the grain boundaries of pearlite nodules, 0.03≦B/(Ti/3.43−N)≦5.0 (1).
摘要翻译：本发明的目的在于提供一种弹簧钢丝，其不仅在拉丝后通过淬火回火处理而被用作形成钢弹簧的冷卷绕用弹簧钢丝，而且当拉丝时用作钢丝弹簧钢丝的冷卷绕弹簧钢丝，并且在弹簧钢丝形成弹簧之后固定具有优异的疲劳特性的弹簧。根据本发明的弹簧钢丝是疲劳特性和拉丝性优异的弹簧钢丝，其中规定了C，Si，Mn，Cr，Ti，B等元素的含量; B，Ti和N的含量（质量％）满足下式（1）。固溶B的量在0.0005〜0.0040％的范围内; 弹簧钢丝的剩余部分由Fe和不可避免的杂质组成; 固体溶质B浓缩在珠光体结核的晶界，0.03＆amp; NlE; B /（Ti / 3.43-N）＆NlE; 5.0（1）。

14. 发明授权

US07901520B2 Spring wire rod excelling in fatigue characteristics 有权
标题翻译：弹簧线棒性能优良
公开(公告)号：US07901520B2
公开(公告)日：2011-03-08
申请号：US12146755
申请日：2008-06-26
申请人： Nao Yoshihara
发明人： Nao Yoshihara
IPC分类号： C22C38/28 , C22C38/50
CPC分类号： C22C38/00 , C21D8/0263 , C21D8/065 , C21D9/525 , C22C38/02 , C22C38/04 , C22C38/28 , C22C38/34 , Y10S148/908
摘要： Disclosed herein is a spring wire rod excelling in fatigue characteristics. It contains TiN inclusions having a specific size defined by the ratio of each group in all the visual fields as follows: (1) Visual fields in which the maximum thickness is no larger than 5 μm: less than 5% (2) Visual fields in which the maximum thickness is larger than 5 μm and no larger than 10 μm: no more than 30% (3) Visual fields in which the maximum thickness is larger than 10 μm and no larger than 25 μm: no less than 70% (4) Visual fields in which the maximum thickness is larger than 25 μm: less than 5% The visual field is the cross section passing through the center line of the wire rod.
摘要翻译：这里公开的是具有优异的疲劳特性的弹簧线棒。它包含具有特定尺寸的TiN夹杂物，其特征尺寸由所有视野中的每个组的比例定义如下：（1）最大厚度不大于5μm的视野：小于5％（2）视场其最大厚度大于5μm且不大于10μm：不大于30％（3）最大厚度大于10μm且不大于25μm的视野：不小于70％（4 ）最大厚度大于25μm的视野：小于5％视场是穿过线材中心线的横截面。

15. 发明申请

US20090283181A1 STEEL WIRE FOR HARD DRAWN SPRING EXCELLENT IN FATIGUE STRENGTH AND RESISTANCE TO SETTLING, AND HARD DRAWN SPRING 有权
标题翻译：用于硬拉伸弹簧的钢丝线具有耐疲劳强度和耐冲击性和硬拉伸弹性
公开(公告)号：US20090283181A1
公开(公告)日：2009-11-19
申请号：US12507428
申请日：2009-07-22
申请人： Sumie SUDA , Nobuhiko Ibaraki , Nao Yoshihara , Shigetsugu Yoshida , Koji Harada
发明人： Sumie SUDA , Nobuhiko Ibaraki , Nao Yoshihara , Shigetsugu Yoshida , Koji Harada
IPC分类号： C22C38/44 , C22C38/00
CPC分类号： C22C38/34 , C21D8/06 , C21D9/52 , C22C38/02 , C22C38/04 , Y10S148/908 , Y10T29/479
摘要： Disclosed is a hard-drawn spring which exhibits fatigue strength and sag resistance equal or superior to springs produced using an oil-tempered wire. The hard-drawn spring is produced using a steel wire containing 0.5 to 0.7 mass % of C, 1.0 to 1.95 mass % of Si, 0.5 to 1.5 mass % of Mn and 0.5 to 1.5 mass % of Cr, with the balance being Fe and inevitable impurities. In the steel wire, the number of carbides having circle-equivalent diameters of 0.1 μm or more is 5 particles/100 μm2 or less.
摘要翻译：公开了一种硬拉伸弹簧，其表现出等于或优于使用油回火线产生的弹簧的疲劳强度和下垂阻力。硬拉伸弹簧使用含有C：0.5〜0.7质量％，Si：1.0〜1.95质量％，Mn：0.5〜1.5质量％，Cr：0.5〜1.5质量％的钢线，余量为Fe，不可避免的杂质。在钢丝中，圆当量直径为0.1μm以上的碳化物的数量为5个/ 100m 2以下。

16. 发明申请

US20060196584A1 Steels for high-strength springs excellent in cold workability and quality stability 有权
公开(公告)号：US20060196584A1
公开(公告)日：2006-09-07
申请号：US11348409
申请日：2006-02-07
申请人： Takuya Kochi , Hiroshi Yaguchi , Nao Yoshihara
发明人： Takuya Kochi , Hiroshi Yaguchi , Nao Yoshihara
IPC分类号： C22C38/42
CPC分类号： F16F1/021 , C21D9/52 , C21D2211/004 , C22C38/001 , C22C38/04 , C22C38/06 , C22C38/34 , C22C38/42 , C22C38/44 , C22C38/46 , C22C38/48 , C22C38/50 , C22C38/54 , Y10S148/908
摘要： A steel for high-strength springs contains, on the mass basis, 0.35% to 0.65% of C, 1.4% to 2.5% of Si, 0.1% to 1.0% of Mn, 2.0% or less (exclusive of 0%) of Cr, 1.0% or less (exclusive of 0%) of Ni, 1.0% or less (exclusive of 0%) of Cu, 0.020% or less (exclusive of 0%) of P, 0.020% or less (exclusive of 0%) of S, 0.006% or less (exclusive of 0%) of N:, and 0.1% or less (exclusive of 0%) of Al, with the remainder being iron and inevitable impurities, in which Wp(Fe) and W(C) satisfy the following condition: Wp(Fe)>5×W(C), wherein Wp(Fe) is the content of Fe (percent by mass) constituting Fe-containing precipitates in the steel; and W(C) is the carbon content (percent by mass) of the steel. The steel is excellent in cold workability and quality stability.

17. 发明申请

US20050173028A1 Steel wire for hard drawn spring excellent in fatigue strength and resistance to settling, and hard drawn spring 有权
标题翻译：硬拉伸弹簧钢丝疲劳强度和抗沉降性优良，硬拉伸弹簧优良
公开(公告)号：US20050173028A1
公开(公告)日：2005-08-11
申请号：US10508945
申请日：2003-03-26
申请人： Sumie Suda , Nobuhiko Ibaraki , Nao Yoshihara , Shigetsugu Yoshida , Koji Harada
发明人： Sumie Suda , Nobuhiko Ibaraki , Nao Yoshihara , Shigetsugu Yoshida , Koji Harada
IPC分类号： C21D8/06 , C21D9/52 , C22C38/02 , C22C38/04 , C22C38/18 , C22C38/34 , C22C38/44
CPC分类号： C22C38/34 , C21D8/06 , C21D9/52 , C22C38/02 , C22C38/04 , Y10S148/908 , Y10T29/479
摘要： Disclosed is a hard-drawn spring which exhibits fatigue strength and sag resistance equal or superior to springs produced using an oil-tempered wire. The hard-drawn spring is produced using a steel wire containing 0.5 to 0.7 mass % of C, 1.0 to 1.95 mass % of Si, 0.5 to 1.5 mass % of Mn and 0.5 to 1.5 mass % of Cr, with the balance being Fe and inevitable impurities. In the steel wire, the number of carbides having circle-equivalent diameters of 0.1 μm or more is 5 particles/100 μm2 or less.
摘要翻译：公开了一种硬拉伸弹簧，其表现出等于或优于使用油回火线产生的弹簧的疲劳强度和下垂阻力。硬拉伸弹簧使用含有C：0.5〜0.7质量％，Si：1.0〜1.95质量％，Mn：0.5〜1.5质量％，Cr：0.5〜1.5质量％的钢线，余量为Fe，不可避免的杂质。在钢丝中，圆当量直径为0.1μm以上的碳化物的数量为5个/100μm以下。

18. 发明授权

US06206984B1 Non-heat treated wire or bar steel for springs 有权
标题翻译：用于弹簧的非热处理钢丝或棒钢
公开(公告)号：US06206984B1
公开(公告)日：2001-03-27
申请号：US09303603
申请日：1999-05-03
申请人： Atsushi Inada , Nao Yoshihara , Nobuhiko Ibaraki
发明人： Atsushi Inada , Nao Yoshihara , Nobuhiko Ibaraki
IPC分类号： C21D700
CPC分类号： C22C38/28 , C21D8/065 , C21D9/02 , C22C38/26 , C22C38/32 , C22C38/38 , Y10S148/908
摘要： A non-heat treated wire or bar steel for springs which is characterized by having in its as-rolled state a tensile strength of 120-150 kgf/mm2 and a bending breakage rate no higher than 15% when tested according to JIS Z-2248 under the condition of r/d=2.8 where r (mm) denotes the inside radius of the bending curvature and d (mm) denotes the diameter of the as-rolled stock.
摘要翻译：一种用于弹簧的未热处理的钢丝或棒钢，其特征在于，其轧制状态的拉伸强度为120-150kgf / mm 2，当根据JIS Z-2248测试时的弯曲断裂率不高于15％在r / d = 2.8的条件下，其中r（mm）表示弯曲曲率的内半径，d（mm）表示轧制坯料的直径。

19. 发明授权

US09611523B2 Cold formable spring steel wire excellent in cold cutting capability and fatigue properties and manufacturing process thereof 有权
公开(公告)号：US09611523B2
公开(公告)日：2017-04-04
申请号：US11559654
申请日：2006-11-14
申请人： Nao Yoshihara
发明人： Nao Yoshihara
IPC分类号： C21D9/02 , C22C38/34 , C22C38/04 , C22C38/18
CPC分类号： C22C38/34 , C22C38/04
摘要： Disclosed is a cold formable spring steel wire excellent in cold cutting capability and fatigue properties, in which the steel wire satisfies given composition, has an average globular carbide particle size [√(ab)]:1.0 μm or less with aspect ratio (a/b, a: major axis of carbide, b: minor axis of carbide) being 2 or less, a ratio (area %) of the globular carbide in the steel: (0.1 to 3)×amount (mass %) of C in the steel, an amount (mass %) of Cr in the globular carbide: [0.4×amount (mass %) of Cr in the steel] or less, hardenability factor (Dic): between 110 mm and 450 mm, and tensile stress of 2000 MPa or more.

20. 发明授权

US09121080B2 High-carbon steel wire excellent in wire drawability and fatigue property after wiredrawing 有权
标题翻译：拉丝后的拉丝性和疲劳性优异的高碳钢丝
公开(公告)号：US09121080B2
公开(公告)日：2015-09-01
申请号：US13638722
申请日：2011-03-17
申请人： Hiroshi Oura , Nao Yoshihara
发明人： Hiroshi Oura , Nao Yoshihara
IPC分类号： C22C38/00 , C21D8/06 , C22C38/02 , C22C38/32 , C22C38/16 , C22C38/06
CPC分类号： C21D8/06 , C21D8/065 , C21D2211/004 , C21D2211/009 , C22C38/001 , C22C38/002 , C22C38/02 , C22C38/06 , C22C38/16 , C22C38/32
摘要： Provided is a high-carbon steel wire which gives steel wires having high strength and has excellent suitability for wiredrawing and which after being wiredrawn, has excellent fatigue properties. The high-carbon steel wire has an adequately regulated chemical composition and has a pearlite structure in an areal proportion of 90% or more. In 2,000 μm2 of the pearlite structure, the number of BN compound grains having an equivalent-circle diameter of 100 nm or more but less than 1,000 nm is 100 or less (including 0) and the number of BN compound grains having an equivalent-circle diameter of 1,000 nm or more is 10 or less (including 0).
摘要翻译：本发明提供一种高强度钢丝，其具有强度高，拉丝性优异的钢丝，并且在拉丝后具有优异的疲劳特性。高碳钢丝具有适度调节的化学成分，并具有90％以上的面积比例的珠光体组织。在2000μm2的珠光体组织中，当量圆直径为100nm以上且小于1000nm的BN化合物粒子的数量为100以下（包括0），具有等效圆的BN化合物粒子数 1000nm以上的直径为10以下（包括0）。

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