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1. 发明授权

US09097306B2 Steel wire rod for high-strength spring excellent in wire drawability, manufacturing method therefor, and high-strength spring 有权
标题翻译：钢丝拉丝性优良的高强度弹簧用线材及其制造方法以及高强度弹簧
公开(公告)号：US09097306B2
公开(公告)日：2015-08-04
申请号：US13813961
申请日：2011-08-30
申请人： Tomonobu Ishida , Nao Yoshihara , Shuhei Kitamura
发明人： Tomonobu Ishida , Nao Yoshihara , Shuhei Kitamura
IPC分类号： B21B1/16 , B21F35/00 , C22C38/18 , C22C38/34 , C22C38/38 , C21D9/02 , F16F1/02 , F16F1/04 , C21D8/06 , C21D9/52 , B21B3/00
CPC分类号： F16F1/021 , B21B1/16 , B21B3/00 , B21F35/00 , C21D8/06 , C21D8/065 , C21D9/02 , C21D9/52 , C21D9/525 , C21D2211/009 , C22C38/02 , C22C38/04 , C22C38/18 , C22C38/22 , C22C38/24 , C22C38/26 , C22C38/28 , C22C38/34 , C22C38/38 , C22C38/42 , C22C38/44 , C22C38/46 , C22C38/48 , C22C38/50 , C22C38/54 , C22C38/58 , F16F1/04 , Y10T29/49611
摘要： Provided are: a steel wire rod material for a high-strength spring, which does not undergo the increase in deformation resistance arising from the increase in hardness and can exhibit good wire-drawing processability and the like even when a heat treatment, which deteriorates productivity, is eliminated or a simplified and rapid heat treatment is employed instead; a useful method for producing the steel wire rod material for a high-strength spring; a high-strength spring produced using the steel wire rod material for a high-strength spring as a material; and others. This steel wire rod material for a high-strength spring is a steel wire rod material that has been hot-rolled already, and has a texture having a specified chemical composition and mainly composed of pearlite, wherein the average value (Pave) of the pearlite nodule size numbers and the standard deviation (Pσ) of the pearlite nodule size numbers fulfill the following formulae (1) and (2), respectively: 9.5≦Pave≦12.0; (1) and 0.2≦Pσ≦0.7 (2).
摘要翻译：本发明提供一种用于高强度弹簧的钢线材材料，其由于硬度的增加而不会发生变形阻力的增加，并且即使当使生产率降低的热处理也能显示出良好的拉丝加工性能等，或者采用简化和快速的热处理; 用于生产用于高强度弹簧的钢线材材料的有用方法; 使用用于高强度弹簧的钢丝线材料作为材料制造的高强度弹簧; 和别的。该高强度弹簧用钢丝线材是已经被热轧的钢线材，具有特定化学组成的织构，主要由珠光体组成，其中珠光体的平均值（Pave）珠光体结节尺寸数的结节尺寸数和标准偏差（P＆sgr）分别满足下列公式（1）和（2）：9.5＆nlE; Pave＆nlE; 12.0; （1）和0.2＆nlE; P＆sgr;＆nlE; 0.7（2）。

2. 发明申请

US20130127100A1 STEEL WIRE ROD FOR HIGH-STRENGTH SPRING EXCELLENT IN WIRE DRAWABILITY, MANUFACTURING METHOD THEREFOR, AND HIGH-STRENGTH SPRING 有权
标题翻译：钢丝绳用于高强度弹力钢丝绳，其制造方法及高强度弹簧
公开(公告)号：US20130127100A1
公开(公告)日：2013-05-23
申请号：US13813961
申请日：2011-08-30
申请人： Tomonobu Ishida , Nao Yoshihara , Shuhei Kitamura
发明人： Tomonobu Ishida , Nao Yoshihara , Shuhei Kitamura
IPC分类号： F16F1/02 , C21D9/02 , B21F35/00 , F16F1/04
CPC分类号： F16F1/021 , B21B1/16 , B21B3/00 , B21F35/00 , C21D8/06 , C21D8/065 , C21D9/02 , C21D9/52 , C21D9/525 , C21D2211/009 , C22C38/02 , C22C38/04 , C22C38/18 , C22C38/22 , C22C38/24 , C22C38/26 , C22C38/28 , C22C38/34 , C22C38/38 , C22C38/42 , C22C38/44 , C22C38/46 , C22C38/48 , C22C38/50 , C22C38/54 , C22C38/58 , F16F1/04 , Y10T29/49611
摘要： Provided are: a steel wire rod material for a high-strength spring, which does not undergo the increase in deformation resistance arising from the increase in hardness and can exhibit good wire-drawing processability and the like even when a heat treatment, which deteriorates productivity, is eliminated or a simplified and rapid heat treatment is employed instead; a useful method for producing the steel wire rod material for a high-strength spring; a high-strength spring produced using the steel wire rod material for a high-strength spring as a material; and others. This steel wire rod material for a high-strength spring is a steel wire rod material that has been hot-rolled already, and has a texture having a specified chemical composition and mainly composed of pearlite, wherein the average value (Pave) of the pearlite nodule size numbers and the standard deviation (Pσ) of the pearlite nodule size numbers fulfill the following formulae (1) and (2), respectively: 9.5≦Pave≦12.0; (1) and 0.2≦Pσ≦0.7 (2).
摘要翻译：本发明提供一种用于高强度弹簧的钢线材材料，其由于硬度的增加而不会发生变形阻力的增加，并且即使当使生产率降低的热处理也能显示出良好的拉丝加工性能等，或者采用简化和快速的热处理; 用于生产用于高强度弹簧的钢线材材料的有用方法; 使用用于高强度弹簧的钢丝线材料作为材料制造的高强度弹簧; 和别的。该高强度弹簧用钢丝线材是已经被热轧的钢线材，具有特定化学组成的织构，主要由珠光体组成，其中珠光体的平均值（Pave）结节尺寸数和珠光体结节尺寸数字的标准偏差（Psigma）分别满足下列公式（1）和（2）：9.5 @ Pave @ 12.0;（1）和0.2 @ Psigma @ 0.7（2）。

3. 发明授权

US08557061B2 Spring steel with excellent resistance to hydrogen embrittlement and steel wire and spring obtained from the steel 有权
标题翻译：弹簧钢具有优异的耐氢脆性和钢丝弹簧钢的获得
公开(公告)号：US08557061B2
公开(公告)日：2013-10-15
申请号：US11538703
申请日：2006-10-04
申请人： Nao Yoshihara
发明人： Nao Yoshihara
IPC分类号： C22C38/28
CPC分类号： C22C38/42 , C21D8/065 , C21D9/52 , C22C38/04 , C22C38/06 , C22C38/28 , C22C38/34 , C22C38/46 , C22C38/50
摘要： Disclosed is a spring steel, containing: C: 0.35-0.65% (the term “%” herein means “mass %”, the same is true hereinbelow), Si: 1.5-2.5%, Mn: 0.05-1%, Cr: 0.05-1.9%, P: 0.015% or less (exclusive of 0%), S: 0.015% or less (exclusive of 0%), Ti: 0.025-0.1%, Al: 0.05% or less (exclusive of 0%), and N: 0.01% or less (exclusive of 0%), wherein an amount of Ti nitride, an amount of Ti sulfide, and an amount of Ti carbide satisfy the following formulas (1), (2), and (3); [Tiwith N]≧3.42×[N]−0.354×[Al]−0.103×[Nb] (1) [Tiwith S]≧1.49×[S] (2) [Tiwith C]≧0.015 (3), in which [Tiwith N] represents the amount of Ti (mass %) forming Ti nitride, [Tiwith S] represents the amount of Ti (mass %) forming Ti sulfide, [Tiwith C] represents the amount of Ti (mass %) forming Ti carbide, and [N], [Al], [Nb], and [S] represent an amount (mass %) of each element in the steel. The spring steel of the present invention shows excellent resistance to hydrogen embrittlement.
摘要翻译：公开了一种弹簧钢，其含有：C：0.35-0.65％（本文中术语“％”表示“质量％”，下同），Si：1.5-2.5％，Mn：0.05-1％，Cr： 0.05-1.9％，P：0.015％以下（不含0％），S：0.015％以下（不含0％），Ti：0.025〜0.1％，Al：0.05％以下（不含0％），N：0.01％以下（不含0％），其中Ti氮化物的量，Ti硫化物的量和Ti碳化物的量满足下式（1），（2）和（3） ; [Ti与N]> = 3.42×[N] -0.354×[Al] -0.103×[Nb]（1）[Ti与S]> = 1.49×[S]（2）[Ti with C]> = 0.015（3）其中[Ti含N]表示形成Ti氮化物的Ti（质量％）的量，[Ti与S]表示形成Ti硫化物的Ti的量（质量％），[Ti] C表示Ti的量（质量％），形成Ti碳化物，[N]，[Al]，[Nb]和[S]表示钢中各元素的量（质量％）。本发明的弹簧钢显示出优异的耐氢脆性。

4. 发明授权

US09994940B2 High carbon steel wire rod having excellent drawability 有权
公开(公告)号：US09994940B2
公开(公告)日：2018-06-12
申请号：US13881750
申请日：2011-10-24
申请人： Hiroshi Oura , Nao Yoshihara
发明人： Hiroshi Oura , Nao Yoshihara
IPC分类号： C22C38/02 , C22C38/14 , C21D8/06 , C22C38/00 , C22C38/04 , C22C38/24 , C22C38/28 , C22C38/32 , C22C38/06 , C22C38/12 , C21D9/00 , C21D9/52
CPC分类号： C22C38/14 , C21D8/065 , C21D9/0081 , C21D9/525 , C21D2211/004 , C22C38/001 , C22C38/002 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/12 , C22C38/24 , C22C38/28 , C22C38/32
摘要： This high carbon steel wire rod, which has excellent drawability in addition to high strength required for a wire rod, contains 0.6-1.5% of C, 0.1-1.5% of Si, 0.1-1.5% of Mn, 0.02% or less of P (excluding 0%), 0.02% or less of S (excluding 0%), 0.03-0.12% of Ti, 0.001-0.01% of B and 0.001-0.005% of N, with solid-solved B being 0.0002% or more, solid-solved N being 0.0010% or less, and the balance being made up of iron and inevitable impurities. In addition, the content of Ti solid-solved in the steel is 0.002% by mass or more, and the content of Ti that formed carbides is 0.020% by mass or more.

5. 发明申请

US20100034691A1 SPRING STEEL WIRE EXCELLENT IN FATIGUE CHARACTERISTIC AND WIRE DRAWABILITY 失效
标题翻译：弹簧钢丝优于疲劳特性和线材拉拔性
公开(公告)号：US20100034691A1
公开(公告)日：2010-02-11
申请号：US12444001
申请日：2007-10-30
申请人： Nao Yoshihara
发明人： Nao Yoshihara
IPC分类号： C22C38/42 , C22C38/22 , C22C38/44 , C22C38/54 , C22C38/02
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 <= B /（Ti / 3.43-N）

6. 发明授权

US07618498B2 Steels for high-strength springs excellent in cold workability and quality stability 有权
标题翻译：高强度弹簧钢，冷加工性和质量稳定性优异
公开(公告)号：US07618498B2
公开(公告)日：2009-11-17
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 , C22C38/46 , C22C38/48 , C22C38/50
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.
摘要翻译：用于高强度弹簧的钢包含C：0.35〜0.65％，Si：1.4〜2.5％，Mn：0.1〜1.0％，Cr：2.0％以下（不含0％）的Cr ，1.0％以下（不包括0％），1.0％以下（不包括0％）Cu，0.020％以下（不含0％）的P，0.020％以下（不含0％）的S，0.006％以下（不包括0％）的N：0.1％以下（不包括0％）的Al，余量为铁和不可避免的杂质，其中Wp（Fe）和W（C ）满足以下条件：Wp（Fe）> 5×W（℃）其中，Wp（Fe）是构成钢中Fe的析出物的Fe含量（质量％）。 W（C）是钢的碳含量（质量％）。钢的冷加工性和质量稳定性优异。

7. 发明授权

US06372056B1 Spring steel superior in workability 有权
标题翻译：弹钢优越的可加工性
公开(公告)号：US06372056B1
公开(公告)日：2002-04-16
申请号：US09466930
申请日：1999-12-20
申请人： Takeshi Kuroda , Nobuhiko Ibaraki , Nao Yoshihara
发明人： Takeshi Kuroda , Nobuhiko Ibaraki , Nao Yoshihara
IPC分类号： C22C3802
CPC分类号： C21D8/06 , C21D9/02 , C21D9/525
摘要： A spring steel which is superior in both shaving properties and green drawing properties, which are important in spring production. A process for making the spring steel into wire rods for good springs. A rolled spring steel superior in workability characterized in that it has the following mechanical properties. Tensile strength≦1200 MPa 30%≦reduction of area≦70% A process for producing a steel wire rod for springs from said spring steel, said process comprising drawing, shaving, and oil tempering, which are carried out sequentially, said drawing being optionally followed by prescribed treatment.
摘要翻译：在春季生产中重要的是在剃须性和绿色拉伸性上均优异的弹簧钢。将弹簧钢制成用于良好弹簧的线材的方法。一种加工性优异的轧制弹簧钢，其特征在于其具有以下机械性能。抗拉强度<= 1200MPa 30％<=面积减小<= 70％一种用于从所述弹簧钢制造用于弹簧的钢线材的方法，所述方法包括依次进行的拉拔，刮削和回火，所述图纸任选地进行规定的处理。

8. 发明授权

US08382918B2 Steel wire material for spring and its producing method 有权
标题翻译：弹簧钢丝材料及其制造方法
公开(公告)号：US08382918B2
公开(公告)日：2013-02-26
申请号：US13172270
申请日：2011-06-29
申请人： Nao Yoshihara , Fujio Koizumi , Hirokazu Inoue , Katsuya Takaoka , Shoji Miyazaki , Sayaka Nagamatsu
发明人： Nao Yoshihara , Fujio Koizumi , Hirokazu Inoue , Katsuya Takaoka , Shoji Miyazaki , Sayaka Nagamatsu
IPC分类号： C21D9/02 , C21D11/00 , C22C38/00 , B32B15/00 , C25D5/10
CPC分类号： C22C38/02 , C21D8/06 , C22C38/04 , C22C38/06 , C22C38/20 , C22C38/28 , C22C38/42 , C22C38/46 , C22C38/50 , Y10T428/12958
摘要： The steel wire material for a spring of the invention contains; C: 0.37-0.54%, Si: 1.7-2.30%, Mn: 0.1-1.30%, Cr: 0.15-1.1%, Cu: 0.15-0.6%, Ti: 0.010-0.1%, Al: 0.003-0.05%, and the balance including iron with inevitable impurities, wherein ferrite decarburized layer depth is 0.01 mm or less, whole decarburized layer depth is 0.20 mm or less, and fracture reduction of area is 25% or more. It alternately may contain; C: 0.38-0.47%, Si: 1.9-2.5%, Mn: 0.6-1.3%, Ti: 0.05-0.15%, Al: 0.003-0.1%, and the balance including iron with inevitable impurities, wherein ferrite decarburized layer depth is 0.01 mm or less.
摘要翻译：本发明的弹簧钢丝材料包含： C：0.37-0.54％，Si：1.7-2.30％，Mn：0.1-1.30％，Cr：0.15-1.1％，Cu：0.15-0.6％，Ti：0.010-0.1％，Al：0.003-0.05％余量包括铁与不可避免的杂质，其中铁素体脱碳层深度为0.01mm以下，整个脱碳层深度为0.20mm以下，面积的断裂减少为25％以上。它可以包含; C：0.38-0.47％，Si：1.9-2.5％，Mn：0.6-1.3％，Ti：0.05-0.15％，Al：0.003-0.1％，余量包括铁与不可避免的杂质，其中铁素体脱碳层深度为 0.01mm以下。

9. 发明申请

US20120285585A1 HIGH-STRENGTH SPRING STEEL 审中-公开
标题翻译：高强度弹簧钢
公开(公告)号：US20120285585A1
公开(公告)日：2012-11-15
申请号：US13511541
申请日：2010-12-21
申请人： Sayaka Nagamatsu , Tomotada Maruo , Nao Yoshihara
发明人： Sayaka Nagamatsu , Tomotada Maruo , Nao Yoshihara
IPC分类号： C22C38/34 , C22C38/22 , C22C38/16 , C22C38/08 , C21D9/02 , C22C38/02
CPC分类号： C21D9/02 , C21D1/02 , C21D7/06 , C21D8/065 , C22C38/002 , C22C38/02 , C22C38/04 , C22C38/34 , C22C38/42 , C22C38/46 , C22C38/50 , C22C38/54
摘要： A spring steel contains 0.15-0.40% carbon, 1-3.5% silicon, 0.20-2.0% manganese, 0.05-1.20% chromium, at most 0.030% phosphorus, at most 0.02% sulfur, and at least one of the following: 0.005-0.10% titanium, 0.005-0.05% niobium, and at most 0.25% vanadium. The remainder of said spring steel includes iron and unavoidable impurities. The carbon equivalent (Ceq1) of the provided spring steel, as calculated by formula (1), is at most 0.55. (1) Ceq1=[C]+0.108×[Si]−0.067×[Mn]+0.024×[Cr]−0.05×[Ni]+0.074×[V]. In the formula (1), each symbol in brackets represents the content (mass %) of the corresponding element.
摘要翻译：弹簧钢含有0.15-0.40％的碳，1-3.5％的硅，0.20-2.0％的锰，0.05-1.20％的铬，至多0.030％的磷，至多0.02％的硫，以及至少一种以下：0.005- 0.10％的钛，0.005-0.05％的铌和至多0.25％的钒。所述弹簧钢的剩余部分包括铁和不可避免的杂质。由式（1）计算的所提供的弹簧钢的碳当量（Ceq1）至多为0.55。（1）Ceq1 = [C] + 0.108×[Si] -0.067×[Mn] + 0.024×[Cr] -0.05×[Ni] + 0.074×[V]。在公式（1）中，括号中的每个符号表示相应元素的含量（质量％）。

10. 发明授权

US07597768B2 Steel wire for hard drawn spring excellent in fatigue strength and resistance to settling, and hard drawn spring and method of making thereof 有权
标题翻译：疲劳强度和耐沉降性优异的硬拉伸弹簧钢丝，硬拉伸弹簧及其制造方法
公开(公告)号：US07597768B2
公开(公告)日：2009-10-06
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： C22C38/22 , C22C38/40 , C22C38/18 , C21D8/06 , C21D9/52
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。

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