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1. 发明申请

US20110303327A1 STEEL WIRE MATERIAL FOR SPRING AND ITS PRODUCING METHOD 有权
标题翻译：用于弹簧的钢丝材料及其生产方法
公开(公告)号：US20110303327A1
公开(公告)日：2011-12-15
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： B32B15/01 , C22C38/28 , C22C38/34 , C22C38/24 , B32B15/02 , C22C38/42 , C22C38/50 , C22C38/22 , C21D9/02 , C21D11/00 , C22C38/20 , C22C38/26
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, Ceq1 in the equation (1) below is 0.580 or more, Ceq2 in the equation (2) below is 0.49 or less, and Ceq3 in the equation (3) below is 0.570 or less. Ceq1=[C]+0.11[Si]−0.07[Mn]−0.05[Ni]+0.02[Cr] (1) Ceq2=[C]+0.30[Cr]−0.15[Ni]−0.70[Cu] (2) Ceq3=[C]−0.04[Si]+0.24[Mn]+0.10[Ni]+0.20[Cr]−0.89[Ti]−1.92[Nb] (3) (In the above equations, [ ] shows the content (mass %) of each element in steel.)
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 0.01以下时，式（1）中的Ceq1为0.580以上，式（2）中的Ceq2为0.49以下，下述式（3）中的Ceq3为0.570以下。 Ceq1 = [C] +0.11 [Si] -0.07 [Mn] -0.05 [Ni] +0.02 [Cr]（1）Ceq2 = [C] +0.30 [Cr] -0.15 [Ni] -0.70 [Cu] ）Ceq3 = [C] -0.04 [Si] +0.24 [Mn] +0.10 [Ni] +0.20 [Cr] -0.89 [Ti] -1.92 [Nb]（3）（在上述等式中，[] （质量％））

2. 发明申请

US20070125455A1 SPRING STEEL WIRE ROD EXCELLENT IN PICKLING PERFORMANCE 审中-公开
标题翻译：弹簧钢丝绳优良的性能
公开(公告)号：US20070125455A1
公开(公告)日：2007-06-07
申请号：US11548080
申请日：2006-10-10
申请人： Nao YOSHIHARA , Fujio Koizumi
发明人： Nao YOSHIHARA , Fujio Koizumi
IPC分类号： C22C38/42
CPC分类号： C22C38/42 , C21D8/065 , C21D9/02 , C22C38/04 , C22C38/34 , C22C38/46 , C22C38/50
摘要： A spring steel wire rod according to the present invention is a spring steel wire rod wherein: the spring steel wire rod contains C: 0.35% to 0.7% (by mass, the same is hereunder applied), Si: 1.5% to 2.50%, Mn: 0.05% to 1.0%, Cr: 0.05% to 1.9%, Cu: 0.05% to 0.7%, Ni: 0.15% to 0.8%, P: 0.02% or less (excluding 0%), S: 0.02% or less (excluding 0%); and the balance being Fe and unavoidable impurities, wherein the ratio of Si to Cu (Si/Cu) is in the range of 4 or more; and the difference between the concentration of Cu in the surface layer and the concentration of Cu in the steel is 0.50% or less and the difference between the concentration of Ni in the surface layer and the concentration of Ni in the steel is 1.00% or less. The present invention makes it possible to improve pickling performance in a spring steel wire rod containing Si abundantly and further Cr, Cu, and Ni.
摘要翻译：根据本发明的弹簧钢线材是弹簧钢线材，其中：弹簧钢线材包含C：0.35％至0.7％（按质量计，下同），Si：1.5％至2.50％ Mn：0.05〜1.0％，Cr：0.05〜1.9％，Cu：0.05〜0.7％，Ni：0.15〜0.8％，P：0.02％以下（不含0％），S：0.02％以下（不包括0％）; 余量为Fe和不可避免的杂质，其中Si与Cu（Si / Cu）的比例在4以上的范围内; 表层中的Cu浓度与钢中Cu的浓度之差为0.50％以下，表层的Ni浓度与钢中的Ni的浓度之差为1.00％以下。通过本发明，能够提高含有Si，Cu，Ni的Si的弹簧钢线材的酸洗性能。

3. 发明申请

US20090020189A1 STEEL WIRE MATERIAL FOR SPRING AND ITS PRODUCING METHOD 审中-公开
标题翻译：用于弹簧的钢丝材料及其生产方法
公开(公告)号：US20090020189A1
公开(公告)日：2009-01-22
申请号：US12171807
申请日：2008-07-11
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： C21D11/00 , C22C38/20 , C22C38/42 , C22C38/34 , C22C38/02 , C21D9/02
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, Ceq1 in the equation (1) below is 0.580 or more, Ceq2 in the equation (2) below is 0.49 or less, and Ceq3 in the equation (3) below is 0.570 or less. Ceq1=[C]+0.11[Si]−0.07[Mn]−0.05[Ni]+0.02[Cr] (1) Ceq2=[C]+0.30[Cr]−0.15[Ni]−0.70[Cu] (2) Ceq3=[C]−0.04[Si]+0.24[Mn]+0.10[Ni]+0.20[Cr]−0.89[Ti]−1.92[Nb] (3) (In the above equations, [ ] shows the content (mass %) of each element in steel.)
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 0.01以下时，式（1）中的Ceq1为0.580以上，式（2）中的Ceq2为0.49以下，下述式（3）中的Ceq3为0.570以下。 Ceq1 = [C] +0.11 [Si] -0.07 [Mn] -0.05 [Ni] +0.02 [Cr]（1）在线式公式描述=“In-line formula”end =“lead” <？in-line-formula description =“In-line Formulas”end =“tail”？> <？in-line-formula description =“In-line Formulas”end =“lead”？> Ceq2 = [C] + 0.30 [Cr] -0.15 [Ni] -0.70 [Cu]（2）<？in-line-formula description =“In-line Formulas”end =“tail”？> <？in-line-formula description =“In Ceq3 = [C] -0.04 [Si] +0.24 [Mn] +0.10 [Ni] +0.20 [Cr] -0.89 [Ti] -1.92 [Nb]（3）？in-line-formula description =“In-line Formulas”end =“tail”？>（在上式中，[]表示钢中各元素的含量（质量％））

4. 发明申请

US20070095439A1 SPRING STEEL WITH EXCELLENT RESISTANCE TO HYDROGEN EMBRITTLEMENT AND STEEL WIRE AND SPRING OBTAINED FROM THE STEEL 有权
标题翻译：具有优异耐腐蚀性的钢材，钢丝和钢丝弹簧钢
公开(公告)号：US20070095439A1
公开(公告)日：2007-05-03
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 C9 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） ; <？in-line-formula description =“In-line Formulas”end =“lead”？> [Ti] N = 3.42x [N] -0.354x [Al] -0.103x [Nb]（1）<？in-line-formula description =“In-line Formulas”end =“tail”？> <？in-line-formula description =“In-line Formulas”end =“lead”？> [Ti] S = 1.49×[S]（2）<？in-line-formula description =“In-line Formulas”end =“tail”？> <？in-line- 公式描述=“在线公式”end =“lead”？> [Ti C = 0.015（3），<？in-line-formula description =“In-line Formulas” 末端=“尾”→其中[具有N N的Ti]表示形成Ti氮化物的Ti（质量％）的量，[具有S N的Ti]表示形成Ti硫化物的Ti（质量％），[具有C 9的Ti]表示形成Ti碳化物的Ti（质量％）的量，[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。

5. 发明申请

US20060225819A1 STEEL WIRE FOR COLD-FORMED SPRING EXCELLENT IN CORROSION RESISTANCE AND METHOD FOR PRODUCING THE SAME 有权
标题翻译：用于耐腐蚀性优异的冷轧弹簧的钢丝及其制造方法
公开(公告)号：US20060225819A1
公开(公告)日：2006-10-12
申请号：US11276842
申请日：2006-03-16
申请人： Nao YOSHIHARA
发明人： Nao YOSHIHARA
IPC分类号： C22C38/34 , C21D9/02 , C21D9/52
CPC分类号： C22C38/02 , C21D1/25 , C21D8/06 , C21D9/02 , C22C38/04 , C22C38/34 , C22C38/42 , Y10S148/908
摘要： A steel wire for a cold-formed spring according to the present invention contains a prescribed chemical component composition, wherein: a martensitic transformation start temperature MS1 shown by the following expression (1) is in the range from 280° C. to 380° C.; the austenite grain size number N of austenite grains is No. 12 or more; the grain boundary share of carbide precipitated along the austenite grain boundaries is 50% or less; the amount of retained austenite after austenitized and tempered is 20 vol. % or less; and the tensile strength is 2,000 MPa or more; MS1=550−361[C]−39[Mn]−20[Cr] (1), where [C], [Mn] and [Cr] represent the contents (mass %) of C, Mn and Cr, respectively. Such a steel wire can: secure hot-rolling formability and subsequent drawability while aiming at higher strength and higher stress; moreover exhibit excellent corrosion resistance; and obtain a spring (mainly a suspension spring for an automobile) excellent also in fatigue strength which is a basic required characteristic.
摘要翻译：根据本发明的用于冷成型弹簧的钢丝包含规定的化学成分组成，其中：由以下表达式（1）表示的马氏体转变开始温度M S1 S1在 280℃至380℃。奥氏体晶粒的奥氏体晶粒数N为12以上; 沿奥氏体晶界析出的碳化物的晶界份数为50％以下; 奥氏体化后回火奥氏体的量为20体积％。％或更少; 拉伸强度为2000MPa以上; <？in-line-formula description =“In-line Formulas”end =“lead”？> M S1 S1 = 550-361 [C] -39 [Mn] -20 [Cr]（1 ）其中[C]，[Mn]和[Cr]表示C，Mn和Cr的含量（质量％），分别。这样的钢丝绳可以确保热轧成形性和随后的拉伸性，同时瞄准更高的强度和更高的应力; 而且表现出优异的耐腐蚀性; 并且获得作为基本要求特性的疲劳强度也优异的弹簧（主要是汽车用悬架弹簧）。

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