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1. 发明申请

US20080156403A1 STEEL FOR HIGH-SPEED COLD WORKING AND METHOD FOR PRODUCTION THEREOF, AND PART FORMED BY HIGH-SPEED COLD WORKING AND METHOD FOR PRODUCTION THEREOF 审中-公开
标题翻译：用于高速冷加工的钢及其生产方法，以及通过高速冷加工形成的部件及其生产方法
公开(公告)号：US20080156403A1
公开(公告)日：2008-07-03
申请号：US11950715
申请日：2007-12-05
申请人： Tomokazu MASUDA , Takuya Kochi , Shogo Murakami , Hiroshi Yaguchi
发明人： Tomokazu MASUDA , Takuya Kochi , Shogo Murakami , Hiroshi Yaguchi
IPC分类号： C22C38/00 , C21D8/00 , C22C38/16 , C22C38/18
CPC分类号： C21D8/065 , C21D9/0093 , C22C38/02 , C22C38/04
摘要： Disclosed herein is a steel for high-speed cold working which exhibits good cold workability during working and also exhibits high hardness after working. The steel for high-speed cold working contains C: 0.03 to 0.6% (by mass), Si: 0.005 to 0.6%, Mn: 0.05 to 2%, P: no more than 0.05% (excluding 0%), S: no more than 0.05% (excluding 0%), and N: no more than 0.04% (excluding 0%), with the remainder being iron and inevitable impurities and the amount of dissolved nitrogen in the steel being no less than 0.006%.
摘要翻译：本文公开了一种用于高速冷加工的钢，其在加工过程中表现出良好的冷加工性，并且在加工后也显示出高硬度。高速冷加工用钢含有C：0.03〜0.6质量％，Si：0.005〜0.6％，Mn：0.05〜2％，P：0.05％以下（不含0％）S：无超过0.05％（不含0％），N：不大于0.04％（不包括0％），余量为铁和不可避免的杂质，钢中溶解氮量不小于0.006％。

2. 发明授权

US08470105B2 Process for manufacturing a high carbon steel wire material having excellent wire drawability 有权
标题翻译：具有优异的拉丝性的高碳钢丝材料的制造方法
公开(公告)号：US08470105B2
公开(公告)日：2013-06-25
申请号：US12466865
申请日：2009-05-15
申请人： Takuya Kochi , Shogo Murakami , Hiroshi Yaguchi , Takeshi Kuroda , Hidenori Sakai , Tomotada Maruo , Takaaki Minamida
发明人： Takuya Kochi , Shogo Murakami , Hiroshi Yaguchi , Takeshi Kuroda , Hidenori Sakai , Tomotada Maruo , Takaaki Minamida
IPC分类号： C21D8/06
CPC分类号： C22C38/02 , C21D8/06 , C21D9/525 , C22C38/04
摘要： A high carbon steel wire material which is made of high carbon steel as a raw material for wire products such as steel cords, bead wires, PC steel wires and spring steel, allows for these wire products to be manufactured efficiently at a high wire drawing rate and has excellent wire drawability and a manufacturing process thereof.This high carbon steel wire material is made of a steel material having specific contents of C, Si, Mn, P, S, N, Al and O, and the Bcc-Fe crystal grains of its metal structure have an average crystal grain diameter (Dave) of 20 μm or less and a maximum crystal grain diameter (Dmax) of 120 μm or less, preferably an area ratio of crystal grains having a diameter of 80 μm or more of 40% or less, an average sub grain diameter (dave) of 10 μm or less, a maximum sub grain diameter (dmax) of 50 μm or less and a (Dave/dave) ratio of the average crystal grain diameter (Dave) to the average sub grain diameter (dave) of 4.5 or less.
摘要翻译：由高碳钢作为钢丝绳，胎圈丝，PC钢丝和弹簧钢等钢丝制品的原料制成的高碳钢丝材料，能够以高拔丝率有效地制造这些线材并且具有优异的拉丝性及其制造方法。这种高碳钢丝材料由具有C，Si，Mn，P，S，N，Al和O的具体含量的钢材制成，并且其金属结构的Bcc-Fe晶粒具有平均晶粒直径（ Dave）为20μm以下，最大结晶粒径（Dmax）为120μm以下，优选直径为80μm以上的晶粒的面积比为40％以下，平均次粒径（dave ）为10μm以下，最大次粒径（dmax）为50μm以下，平均晶粒直径（Dave）与平均次晶粒直径（dave）的（Dave / dave）比为4.5以下。

3. 发明申请

US20070277913A1 WIRE ROD EXCELLENT IN WIRE-DRAWING WORKABILITY AND METHOD FOR PRODUCING SAME 审中-公开
标题翻译：电线优良的线条可靠性及其生产方法
公开(公告)号：US20070277913A1
公开(公告)日：2007-12-06
申请号：US11754537
申请日：2007-05-29
申请人： Takuya Kochi , Takeshi Kuroda , Hidenori Sakai , Tomotada Maruo , Shogo Murakami , Hiroshi Yaguchi
发明人： Takuya Kochi , Takeshi Kuroda , Hidenori Sakai , Tomotada Maruo , Shogo Murakami , Hiroshi Yaguchi
IPC分类号： C22C38/00 , C21D9/52
CPC分类号： C21D8/065 , C22C38/02 , C22C38/04 , C22C38/06
摘要： Disclosed are a wire rod and a method therefor. The wire rod is excellent in wire-drawing workability, insusceptible to wire break in spite of an increase in wire-drawing rate, and reduction of area, and capable of extending a die life by suppressing die wear. The wire rod is made of steel containing C: 0.6 to 1.1%, Si: 0.1 to 2.0%, Mn: 0.1 to 1%, P: not more than 0.20%, S: not more than 0.20%, N: not more than 0.006%, Al: not more than 0.03%, and O: not more than 0.003%, the balance including Fe, and unavoidable impurities. Further, the wire rod comprises a pearlite structure wherein an area ratio of a second-phase ferrite is not more than 11.0%, and a pearlite lamellar spacing is not less than 120 μm.
摘要翻译：公开了一种线材及其方法。该线材拉拔加工性优异，尽管拉丝速度增加，并且减少面积，并且能够通过抑制模具磨损而延长模具寿命，但不会发生断线。该线材由C：0.6〜1.1％，Si：0.1〜2.0％，Mn：0.1〜1％，P：0.20以下，S：0.20％以下，N：不大于 0.006％，Al：0.03％以下，O：0.003％以下，余量包含Fe和不可避免的杂质。此外，线材包括珠光体组织，其中第二相铁素体的面积比不大于11.0％，珠光体层间距不小于120μm。

4. 发明授权

US09267183B2 Wire with excellent suitability for drawing and process for producing the same 有权
标题翻译：电线具有优良的适用性，适用于绘图和加工生产
公开(公告)号：US09267183B2
公开(公告)日：2016-02-23
申请号：US12279000
申请日：2006-11-07
申请人： Takuya Kochi , Shogo Murakami , Shoji Miyazaki , Ken Ishida , Masao Toyama , Fujio Koizumi
发明人： Takuya Kochi , Shogo Murakami , Shoji Miyazaki , Ken Ishida , Masao Toyama , Fujio Koizumi
IPC分类号： C21D9/52 , C21D3/06 , C21D8/06 , C22C38/00 , C22C38/04 , C22C38/20 , C22C38/28 , C22C38/34 , C22C38/42 , C22C38/50 , B21B1/16 , B21B3/00
CPC分类号： C21D3/06 , B21B1/16 , B21B3/00 , C21D8/065 , C21D9/525 , C22C38/002 , C22C38/04 , C22C38/20 , C22C38/28 , C22C38/34 , C22C38/42 , C22C38/50
摘要： A hot-rolled wire rod excelling in wire drawability is provided, in which breakage can be suppressed even in heavy work from a large diameter. A hot-rolled wire rod contains C: 0.35 to 0.65% (percent by mass, hereinafter expressed as well), Si: 1.4 to 3.0%, Mn: 0.10 to 1.0%, Cr: 0.1 to 2.0%, P: 0.025% or less (exclusive of 0%), S: 0.025% or less (exclusive of 0%), N: 0.006% or less (exclusive of 0%), Al: 0.1% or less (exclusive of 0%), and O: 0.0030% or less (exclusive of 0%), with the remnant consisting of Fe and inevitable impurities; wherein the content of hydrogen in steel is 2.50 ppm (ppm by mass, hereinafter expressed as well) or less, and hardness (HV) is 460×C00.1 or less (C0 indicates the content of C (percent by mass) in a position of depth of D/4 (D: diameter of the wire rod)).
摘要翻译：提供了一种具有良好的拉丝性的热轧线材，其中即使在大直径的重工作中也能够抑制破损。热轧线材含有C：0.35〜0.65％（质量％，以下也表示），Si：1.4〜3.0％，Mn：0.10〜1.0％，Cr：0.1〜2.0％，P：0.025％较少（不含0％），S：0.025％以下（不含0％），N：0.006％以下（不含0％），Al：0.1％以下（不含0％），O： 0.0030％以下（不含0％），残留物由Fe和不可避免的杂质组成; 钢中的氢含量为2.50ppm（质量ppm，以下也表示）以下，硬度（HV）为460×C00.1以下（C0表示a的含量（质量％）） D / 4深度位置（D：线材直径））。

5. 发明申请

US20090065105A1 SPRING STEEL WIRE ROD EXCELLENT IN DECARBURIZATION RESISTANCE AND WIRE DRAWING WORKABILITY AND METHOD FOR PRODUCING SAME 有权
标题翻译：弹簧钢丝绳在脱铝电阻和线图中的可行性和生产方法
公开(公告)号：US20090065105A1
公开(公告)日：2009-03-12
申请号：US12192437
申请日：2008-08-15
申请人： Takuya Kochi , Shogo Murakami , Takeshi Kuroda , Hiromichi Tsuchiya
发明人： Takuya Kochi , Shogo Murakami , Takeshi Kuroda , Hiromichi Tsuchiya
IPC分类号： C21D9/02 , C22C38/18
CPC分类号： C22C38/18
摘要： Disclosed is a spring steel wire rod that comprises C in a range of 0.35 to 0.65% (mass %, the same applies to respective elements described hereinafter), Si in a range of 1.4 to 2.2%, Mn in a range of 0.10 to 1.0%, Cr in a range of 0.1 to 2.0%, P not more than 0.025% % excluded), and S not more than 0.025% (0% excluded), balance comprising iron, and unavoidable impurities, wherein an average grain size Dc of a central part of the steel wire rod is not more than 80 μtm while an average grain size Ds of a surface layer part of the steel wire rod is not less than 3.0 μm.
摘要翻译：公开了一种弹簧钢线材，其包含在0.35至0.65％范围内的C（质量％，同样适用于下文所述的元素），Si在1.4至2.2％的范围内，Mn在0.10至1.0的范围内％，0.1〜2.0％范围的Cr，不超过0.025％的P），S：0.025％以下（0％除外），余量为铁和不可避免的杂质，其中平均粒径Dc为该钢线材的中心部分为80μm以上，钢线材的表层部的平均粒径Ds为3.0μm以上。

6. 发明授权

US09005378B2 Spring steel wire rod excellent in decarburization resistance and wire drawing workability and method for producing same 有权
标题翻译：耐脱碳性和拉丝加工性优异的弹簧钢线材及其制造方法
公开(公告)号：US09005378B2
公开(公告)日：2015-04-14
申请号：US12192437
申请日：2008-08-15
申请人： Takuya Kochi , Shogo Murakami , Takeshi Kuroda , Hiromichi Tsuchiya
发明人： Takuya Kochi , Shogo Murakami , Takeshi Kuroda , Hiromichi Tsuchiya
IPC分类号： C22C38/18
CPC分类号： C22C38/18
摘要： Disclosed is a spring steel wire rod that comprises C in a range of 0.35 to 0.65% (mass %, the same applies to respective elements described hereinafter), Si in a range of 1.4 to 2.2%, Mn in a range of 0.10 to 1.0%, Cr in a range of 0.1 to 2.0%, P not more than 0.025% (0% excluded), and S not more than 0.025% (0% excluded), balance comprising iron, and unavoidable impurities, wherein an average grain size Dc of a central part of the steel wire rod is not more than 80 μm while an average grain size Ds of a surface layer part of the steel wire rod is not less than 3.0 μm.
摘要翻译：公开了一种弹簧钢线材，其包含在0.35至0.65％范围内的C（质量％，同样适用于下文所述的元素），Si在1.4至2.2％的范围内，Mn在0.10至1.0的范围内％，Cr为0.1〜2.0％，P为0.025％以下（不包括0％），S为0.025％以下（0％除外），余量为铁和不可避免的杂质，平均粒径钢线材的中心部的Dc为80μm以下，钢线材的表层部的平均粒径Ds为3.0μm以上。

7. 发明申请

US20090007998A1 WIRE WITH EXCELLENT SUITABILITY FOR DRAWING AND PROCESS FOR PRODUCING THE SAME 有权
标题翻译：具有优异的适用性的线条及其制造方法
公开(公告)号：US20090007998A1
公开(公告)日：2009-01-08
申请号：US12279000
申请日：2006-11-07
申请人： Takuya Kochi , Shogo Murakami , Shoji Miyazaki , Ken Ishida , Masao Toyama , Fujio Koizumi
发明人： Takuya Kochi , Shogo Murakami , Shoji Miyazaki , Ken Ishida , Masao Toyama , Fujio Koizumi
IPC分类号： C21D9/52 , C22C38/34 , C22C38/20 , C22C38/22 , C22C38/32
CPC分类号： C21D3/06 , B21B1/16 , B21B3/00 , C21D8/065 , C21D9/525 , C22C38/002 , C22C38/04 , C22C38/20 , C22C38/28 , C22C38/34 , C22C38/42 , C22C38/50
摘要： A hot-rolled wire rod excelling in wire drawability is provided, in which breakage can be suppressed even in heavy work from a large diameter. A hot-rolled wire rod contains C: 0.35 to 0.65% (percent by mass, hereinafter expressed as well), Si: 1.4 to 3.0%, Mn: 0.10 to 1.0%, Cr: 0.1 to 2.0%, P: 0.025% or less (exclusive of 0%), S: 0.025% or less (exclusive of 0%), N: 0.006% or less (exclusive of 0%), Al: 0.1% or less (exclusive of 0%), and O: 0.0030% or less (exclusive of 0%), with the remnant consisting of Fe and inevitable impurities; wherein the content of hydrogen in steel is 2.50 ppm (ppm by mass, hereinafter expressed as well) or less, and hardness (HV) is 460×C00.1 or less (C0 indicates the content of C (percent by mass) in a position of depth of D/4 (D: diameter of the wire rod)).
摘要翻译：提供了一种具有良好的拉丝性的热轧线材，其中即使在大直径的重工作中也能够抑制破损。热轧线材含有C：0.35〜0.65％（质量％，以下也表示），Si：1.4〜3.0％，Mn：0.10〜1.0％，Cr：0.1〜2.0％，P：0.025％较少（不含0％），S：0.025％以下（不含0％），N：0.006％以下（不含0％），Al：0.1％以下（不含0％），O： 0.0030％以下（不含0％），残留物由Fe和不可避免的杂质组成; 钢中的氢含量为2.50ppm（质量ppm，以下也表示）以下，硬度（HV）为460×0.001以下（C0表示C（质量％）的含量深度D / 4（D：线材直径））。

8. 发明授权

US08038934B2 High-strength spring steel excellent in brittle fracture resistance and method for producing same 有权
$High-strength spring steel excellent in brittle fracture resistance and method for producing same$
标题翻译：耐脆性优异的高强度弹簧钢及其制造方法
公开(公告)号：US08038934B2
公开(公告)日：2011-10-18
申请号：US12160913
申请日：2007-01-23
申请人： Takuya Kochi , Hiroshi Yaguchi , Wataru Urushihara
发明人： Takuya Kochi , Hiroshi Yaguchi , Wataru Urushihara
IPC分类号： C22C38/18 , C22C38/00 , C22C38/60 , C22C38/02 , C21D11/00 , C21D9/02
CPC分类号： C21D9/52 , C21D8/065 , C21D9/02 , C21D2211/001 , C22C38/002 , C22C38/04 , C22C38/20 , C22C38/22 , C22C38/24 , C22C38/28 , C22C38/34 , C22C38/42 , C22C38/44 , C22C38/46 , C22C38/50 , Y10S148/908
摘要： A spring steel having a high strength of 1900 MPa or more and superior in the brittle fracture resistance, as well as a method for manufacturing the same, are provided.The high strength spring steel comprises, as basic components in mass %, C: 0.4-0.6%, Si: 1.4-3.0%, Mn: 0.1-1.0%, Cr: 0.2-2.5%, P: 0.025% or less, S: 0.025% or less, N: 0.006% or less, Al: 0.1% or less, and O: 0.003% or less, the amount of solute C being 0.15% or less, the amount of Cr contained as a Cr-containing precipitate being 0.10% or less, and a TS value represented by the following equation being 24.8% or more, and in point of structure, the pre-austenite grain diameter being 10 μm or smaller, wherein TS=28.5*[C]+4.9*[Si]+0.5*[Mn]+2.5*[Cr]+1.7*[V]+3.7*[Mo] where [X] stands for mass % of element X.
摘要翻译：提供了具有1900MPa以上的高强度且耐脆性断裂性优异的弹簧钢及其制造方法。高强度弹簧钢作为质量％的基本成分为C：0.4〜0.6％，Si：1.4〜3.0％，Mn：0.1〜1.0％，Cr：0.2〜2.5％，P：0.025％以下，S ：0.025％以下，N：0.006％以下，Al：0.1％以下，O：0.003％以下，溶质C的含量为0.15％以下，Cr含量为Cr 为0.10％以下，由下式表示的TS值为24.8％以上，从结构上看，前奥氏体晶粒直径为10μm以下，其中TS = 28.5 * [C] + 4.9 * [Si] + 0.5 * [Mn] + 2.5 * [Cr] + 1.7 * [V] + 3.7 * [Mo]其中[X]表示元素X的质量％。

9. 发明申请

US20070125456A1 HIGH STRENGTH SPRING STEEL WIRE WITH EXCELLENT COILING PROPERTIES AND HYDROGEN EMBRITTLEMENT RESISTANCE 审中-公开
标题翻译：具有优异线圈特性和耐腐蚀性能的高强度弹簧钢丝
公开(公告)号：US20070125456A1
公开(公告)日：2007-06-07
申请号：US11462894
申请日：2006-08-07
申请人： Takuya Kochi , Hiroshi Yaguchi
发明人： Takuya Kochi , Hiroshi Yaguchi
IPC分类号： C22C38/18
CPC分类号： C22C38/18 , C22C38/04 , C22C38/06 , C22C38/34
摘要： Disclosed herein is a high strength spring steel wire with excellent coiling properties and hydrogen embrittlement resistance. The steel wire comprises, by mass, 0.4 to 0.60% of C, 1.7 to 2.5% of Si, 0.1 to 0.4% of Mn, 0.5 to 2.0% of Cr, 0.015% or less of P (exceeding 0%), 0.015% or less of S (exceeding 0%), 0.006% or less of N (exceeding 0%), 0.001 to 0.07% of Al, and the remainder being Fe and unavoidable impurities. The steel wire has a structure wherein prior austenite has an average grain size of 12 μm or less, and retained austenite exists in an amount of 1.0 to 8.0 vol. % with respect to a whole structure of the steel wire. The retained austenite has an average grain size of 300 nm or less and a maximum grain size of 800 nm or less. The steel has a tensile strength of 1,900 MPa or more.
摘要翻译：本发明公开了一种具有优异的卷取性能和耐氢脆性的高强度弹簧钢丝。该钢丝以质量计含有C：0.4〜0.60％，Si：1.7〜2.5％，Mn：0.1〜0.4％，Cr：0.5〜2.0％，P：0.015％以下（超过0％），0.015％以下的S（超过0％），0.006％以下的N（超过0％），0.001〜0.07％的Al，余量为Fe和不可避免的杂质。钢丝具有以往的奥氏体的平均粒径为12μm以下的结构，残留奥氏体的量为1.0〜8.0体积％。相对于钢丝的整体结构为％。残留奥氏体的平均粒径为300nm以下，最大粒径为800nm以下。钢的拉伸强度为1900MPa以上。

10. 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.

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