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1. 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。

2. 发明授权

US07763123B2 Spring produced by a process comprising coiling a hard drawn steel wire excellent in fatigue strength and resistance to setting 有权
标题翻译：通过包括卷绕疲劳强度和耐凝固性的硬拉丝钢丝的方法制造的弹簧
公开(公告)号：US07763123B2
公开(公告)日：2010-07-27
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： C21D9/02 , C21D7/06 , C23C8/26 , C22C38/22 , 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/100μm2以下。

3. 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。

4. 发明授权

US08007716B2 Steel wire for high strength spring excellent in workability and high strength 有权
标题翻译：用于高强度弹簧的钢丝绳，加工性和弹簧强度高
公开(公告)号：US08007716B2
公开(公告)日：2011-08-30
申请号：US10549753
申请日：2004-03-25
申请人： Sumie Suda , Nobuhiko Ibaraki , Noritoshi Takamura , Naoki Terakado , Satoru Tendo , Tadayoshi Fujiwara , Tetsuo Jinbo
发明人： Sumie Suda , Nobuhiko Ibaraki , Noritoshi Takamura , Naoki Terakado , Satoru Tendo , Tadayoshi Fujiwara , Tetsuo Jinbo
IPC分类号： C22C38/18 , C22C38/00 , C23C8/26
CPC分类号： C22C38/46 , C22C38/02 , C22C38/04 , C22C38/34 , C22C38/44
摘要： A steel wire has tempered martensite, comprises, as essential components, by mass, C: 0.53 to 0.68%; Si: 1.2 to 2.5%; Mn: 0.2 to 1.5%; Cr: 1.4 to 2.5%; Al: 0.05% or less; further comprises, as a selective component, Ni: 0.4% or less; V: 0.4% or less; Mo: 0.05 to 0.5%; or Nb: 0.05 to 0.5%; and further comprises remainder essentially consisting of Fe and inevitable impurities, wherein the grain size number of prior austenite is 11.0 or larger, and the proof stress ratio (σ0.2/σB), namely, a ratio of 0.2% proof stress (σ0.2) to tensile strength (σB) is 0.85 or lower. Satisfying the above requirements makes it possible to produce a steel wire for high-strength spring excellent both in workability (cold workability), and in sag resistance and fatigue properties.
摘要翻译：钢丝具有回火马氏体，以质量计C为0.53〜0.68％为必要成分。 Si：1.2〜2.5％ Mn：0.2〜1.5％ Cr：1.4〜2.5％ Al：0.05％以下; 进一步包含Ni：0.4％以下的选择性组分; V：0.4％以下; Mo：0.05〜0.5％或Nb：0.05〜0.5％并且还包含基本上由Fe和不可避免的杂质组成的剩余部分，其中原奥氏体的晶粒数为11.0以上，并且证明应力比（＆Sgr 0.2 /＆Sgr; B），即0.2％屈服应力＆sgr; 0.2）拉伸强度（＆amp; B）为0.85以下。满足上述要求，可以生产出在加工性（冷加工性）以及抗下垂性和疲劳性方面优异的高强度弹簧钢丝。

5. 发明授权

US07074282B2 Steel wire rod for hard drawn spring, drawn wire rod for hard drawn spring and hard drawn spring, and method for producing hard drawn spring 有权
标题翻译：用于硬拉伸弹簧的钢丝杆，用于硬拉伸弹簧和硬拉伸弹簧的拉丝线材，以及用于生产硬拉伸弹簧的方法
公开(公告)号：US07074282B2
公开(公告)日：2006-07-11
申请号：US10204406
申请日：2001-12-19
申请人： Nobuhiko Ibaraki , Atushi Inada , Sumie Suda , Noritoshi Takamura , Satoru Tendoh , Tadayoshi Fujiwara , Tetsuo Jinbo
发明人： Nobuhiko Ibaraki , Atushi Inada , Sumie Suda , Noritoshi Takamura , Satoru Tendoh , Tadayoshi Fujiwara , Tetsuo Jinbo
IPC分类号： C22C38/00
CPC分类号： F16F1/021 , C21D1/20 , C21D7/06 , C21D8/065 , C21D9/02 , C21D9/525 , C21D2211/009 , C22C38/04 , C22C38/34 , C22C38/46
摘要： Disclosed is a steel wire rod for hard-drawn springs capable of exhibiting fatigue strength and sag resistance equivalent to or higher than springs made of an oil-tempered wire. The steel wire rod contains carbon in a range from 0.5 to less than 0.7 mass %, silicon in a range from 1.4 to 2.5 mass %, manganese in a range from 0.5 to 1.5 mass %, chromium in a range from 0.05 to 2.0 mass %, and vanadium in a range from 0.05 to 0.40 mass %, and has an area ratio Rp with respect to pearlite which satisfies the mathematical expression (1): Rp(area %)≧55×[C]+61 (1) where [C] denotes the content (mass %) of carbon.
摘要翻译：公开了一种用于硬拉伸弹簧的钢线材，其能够表现出与由油回火丝制成的弹簧相当或更高的疲劳强度和下垂阻力。该钢线材含有0.5〜0.7质量％的碳，1.4〜2.5质量％的硅，0.5〜1.5质量％的锰，0.05〜2.0质量％的铬，，和0.05〜0.40质量％的范围的钒，相对于满足数学式（1）的珠光体的面积比Rp：＆lt;＆lt; in-line-formula description =“In-line formula”end =“ （“）”> Rp（面积％）> = 55×[C] +61（1）<？在线公式描述=“在线公式”end =“tail”？>其中[C] 质量％）的碳。

6. 发明授权

US07615186B2 Spring steel excellent in sag resistance and fatigue property 有权
标题翻译：弹簧钢耐下垂和疲劳性能优异
公开(公告)号：US07615186B2
公开(公告)日：2009-11-10
申请号：US10550019
申请日：2004-03-25
申请人： Sumie Suda , Nobuhiko Ibaraki
发明人： Sumie Suda , Nobuhiko Ibaraki
IPC分类号： C22C38/18 , C22C38/00
CPC分类号： C22C38/34 , C21D8/06 , C21D8/065 , C21D9/52 , C22C38/04 , C22C38/06 , C22C38/22 , C22C38/24
摘要： The spring steel according to the present invention is a spring steel excellent in sag resistance and fatigue property containing: C: 0.5 to 0.8% by mass (hereinafter, referred to as %), Si: 1.2 to 2.5%, Mn: 0.2 to 1.5%, Cr: 1.0 to 4.0%, V: 0.5% or less (including 0%), P: 0.02% or less (excluding 0%), S: 0.02% or less (excluding 0%), Al: 0.05% or less (excluding 0%), and Fe and inevitable impurities as the balance, wherein the Si content and the Cr content satisfy the following formula (1): 0.8×[Si]+[Cr]≧2.6 (1) (wherein, [Si] and [Cr] respectively represent the Si content (%) and the Cr content (%)). The spring steel is useful in improving both sag resistance and fatigue property.
摘要翻译：根据本发明的弹簧钢是耐下垂性和耐疲劳性优异的弹簧钢，其含有：C：0.5〜0.8质量％（以下称为％），Si：1.2〜2.5％，Mn：0.2〜1.5 ％，Cr：1.0〜4.0％，V：0.5％以下（含0％），P：0.02％以下（不含0％），S：0.02％以下（不含0％），Al：0.05％小于（不包括0％），Fe和不可避免的杂质作为天平，其中Si含量和Cr含量满足下式（1）：0.8x [Si] + [Cr] = 2.6（1） [Si]和[Cr]分别表示Si含量（％）和Cr含量（％））。弹簧钢可用于提高抗流挂性和疲劳性能。

7. 发明申请

US20070163680A1 Steel for spring being excellent in resistance to setting and fatigue characteristics 有权
标题翻译：弹簧钢具有优良的耐凝固性和耐疲劳特性
公开(公告)号：US20070163680A1
公开(公告)日：2007-07-19
申请号：US10550019
申请日：2004-03-25
申请人： Sumie Suda , Nobuhiko Ibaraki
发明人： Sumie Suda , Nobuhiko Ibaraki
IPC分类号： C22C38/18
CPC分类号： C22C38/34 , C21D8/06 , C21D8/065 , C21D9/52 , C22C38/04 , C22C38/06 , C22C38/22 , C22C38/24
摘要： The spring steel according to the present invention is a spring steel excellent in sag resistance and fatigue property containing: C: 0.5 to 0.8% by mass (hereinafter, referred to as %), Si: 1.2 to 2.5%, Mn: 0.2 to 1.5%, Cr: 1.0 to 4.0%, V: 0.5% or less (including 0%), P: 0.02% or less (excluding 0%), S: 0.02% or less (excluding 0%), Al: 0.05% or less (excluding 0%), and Fe and inevitable impurities as the balance, wherein the Si content and the Cr content satisfy the following formula (1): 0.8×[Si]+[Cr]≧2.6 (1) (wherein, [Si] and [Cr] respectively represent the Si content (%) and the Cr content (%)). The spring steel is useful in improving both sag resistance and fatigue property.
摘要翻译：根据本发明的弹簧钢是耐下垂性和耐疲劳性优异的弹簧钢，其含有：C：0.5〜0.8质量％（以下称为％），Si：1.2〜2.5％，Mn：0.2〜1.5 ％，Cr：1.0〜4.0％，V：0.5％以下（含0％），P：0.02％以下（不含0％），S：0.02％以下（不含0％），Al：0.05％较少（不包括0％），Fe和不可避免的杂质作为天平，其中Si含量和Cr含量满足下列公式（1）：<？in-line-formula description =“In-line formula”end =“ 导线“>> 0.8x [Si] + [Cr]> = 2.6（1）<？在线公式描述=”在线公式“end =”tail“？>（其中，[Si]和[Cr ]分别表示Si含量（％）和Cr含量（％））。弹簧钢可用于提高抗流挂性和疲劳性能。

8. 发明申请

US20060201588A1 Steel wire for high strength spring excellent in workability and high strength spring 有权
标题翻译：用于高强度弹簧的钢丝绳，加工性和弹簧强度高
公开(公告)号：US20060201588A1
公开(公告)日：2006-09-14
申请号：US10549753
申请日：2004-03-25
申请人： Sumie Suda , Nobuhiko Ibaraki , Noritoshi Takamura , Naoki Terakado , Satoru Tendo , Tadayoshi Fujiwara , Tetsuo Jinbo
发明人： Sumie Suda , Nobuhiko Ibaraki , Noritoshi Takamura , Naoki Terakado , Satoru Tendo , Tadayoshi Fujiwara , Tetsuo Jinbo
IPC分类号： C22C38/18
CPC分类号： C22C38/46 , C22C38/02 , C22C38/04 , C22C38/34 , C22C38/44
摘要： A steel wire has tempered martensite, comprises, as essential components, by mass, C: 0.53 to 0.68%; Si: 1.2 to 2.5%; Mn: 0.2 to 1.5%; Cr: 1.4 to 2.5%; Al: 0.05% or less; further comprises, as a selective component, Ni: 0.4% or less; V: 0.4% or less; Mo: 0.05 to 0.5%; or Nb: 0.05 to 0.5%; and further comprises remainder essentially consisting of Fe and inevitable impurities, wherein the grain size number of prior austenite is 11.0 or larger, and the proof stress ratio (σ0.2/σB), namely, a ratio of 0.2% proof stress (σ0.2) to tensile strength (σB) is 0.85 or lower. Satisfying the above requirements makes it possible to produce a steel wire for high-strength spring excellent both in workability (cold workability), and in sag resistance and fatigue properties.
摘要翻译：钢丝具有回火马氏体，以质量计C为0.53〜0.68％为必要成分。 Si：1.2〜2.5％ Mn：0.2〜1.5％ Cr：1.4〜2.5％ Al：0.05％以下; 进一步包含Ni：0.4％以下的选择性组分; V：0.4％以下; Mo：0.05〜0.5％或Nb：0.05〜0.5％并且还包含基本上由Fe和不可避免的杂质组成的剩余部分，其中原奥氏体的晶粒数为11.0或更大，并且证明应力比（σσ0.2 /σ2 / ），即0.2％屈服应力（σ<0.2％）与拉伸强度（σσB）之比为0.85以下。满足上述要求，可以生产出在加工性（冷加工性）以及抗下垂性和疲劳性方面优异的高强度弹簧钢丝。

9. 发明申请

US20080202289A1 METHOD FOR PRODUCING HIGH CLEANNESS STEEL EXCELLENT IN FATIGUE STRENGTH OR COLD WORKABILITY 有权
标题翻译：用于生产具有疲劳强度或冷加工性能的高纯度钢的方法
公开(公告)号：US20080202289A1
公开(公告)日：2008-08-28
申请号：US12108204
申请日：2008-04-23
申请人： Koichi Sakamoto , Tomoko Sugimura , Atsuhiko Yoshida , Yoshio Fukuzaki , Sumie Suda
发明人： Koichi Sakamoto , Tomoko Sugimura , Atsuhiko Yoshida , Yoshio Fukuzaki , Sumie Suda
IPC分类号： C21C7/04
CPC分类号： C22C38/46 , C01B33/06 , C21C7/0006 , C21C7/04 , C21C7/076 , C21D8/065 , C22C38/002 , C22C38/02 , C22C38/04 , C22C38/18 , C22C38/24 , C22C38/40 , Y02P10/242
摘要： The present invention relates to a high-cleanliness steel having a high fatigue strength and high cold workability, and a method of making the high-cleanliness steel. The method adds a Li—Si alloy having a Li content between 20 and 40% and/or Li2CO3 as a Li-containing substance to a molten steel. The Li-containing substance is added to the molten steel after the completion of a series of steps of a ladle refining process including composition adjustment, temperature adjustment and slag refining. The high-cleanliness steel has a total-Li content between 0.020 and 20 ppm by mass and contains 1.0 or below oxide inclusion particle having a major diameter of 20 μm or above at a maximum in 50 g of the steel wire. The steel contains an oxide inclusion that has a CaO content between 15 and 55%, SiO2 content between 20 and 70%, an Al2O3 content of 35% or below, a MgO content of 20% or below and a Li2O content between 0.5 and 20%. The high-cleanliness steel has improved fatigue characteristics and improved cold workability.
摘要翻译：本发明涉及具有高疲劳强度和高冷加工性的高清洁度钢以及制造高清洁度钢的方法。该方法将Li含量为20-40％的Li-Si合金和/或Li 2 CO 3 3作为含Li物质添加到钢水中。在包括组合物调节，温度调节和炉渣精炼的钢包精炼过程的一系列步骤完成之后，将含Li物质添加到钢水中。高洁净度钢的总Li含量在0.020〜20ppm质量之间，并且在50g的钢丝中最多含有1.0或更小的直径为20μm以上的氧化物夹杂物。钢含有CaO含量为15〜55％，SiO 2含量为20〜70％，Al 2 O 3 O 3的氧化物夹杂物，含量为35％以下，MgO含量为20％以下，Li 2 O 3 O含量为0.5％〜20％。高清洁度钢具有改善的疲劳特性和改善的冷加工性能。

10. 发明申请

US20060156864A1 Method for producing high cleanness steel excellent in fatigue strength or cold workability 有权
标题翻译：疲劳强度或冷加工性优异的高洁净度钢的制造方法
公开(公告)号：US20060156864A1
公开(公告)日：2006-07-20
申请号：US10564061
申请日：2004-12-17
申请人： Koichi Sakamoto , Tomoko Sugimura , Atsuhiko Yoshida , Yoshio Fukuzaki , Sumie Suda
发明人： Koichi Sakamoto , Tomoko Sugimura , Atsuhiko Yoshida , Yoshio Fukuzaki , Sumie Suda
IPC分类号： C21C7/04
CPC分类号： C22C38/46 , C01B33/06 , C21C7/0006 , C21C7/04 , C21C7/076 , C21D8/065 , C22C38/002 , C22C38/02 , C22C38/04 , C22C38/18 , C22C38/24 , C22C38/40 , Y02P10/242
摘要： The present invention relates to a high-cleanliness steel having a high fatigue strength and high cold workability, and a method of making the high-cleanliness steel. The method adds a Li—Si alloy having a Li content between 20 and 40% and/or Li2CO3 as a Li-containing substance to a molten steel. The Li-containing substance is added to the molten steel after the completion of a series of steps of a ladle refining process including composition adjustment, temperature adjustment and slag refining. The high-cleanliness steel has a total-Li content between 0.020 and 20 ppm by mass and contains 1.0 or below oxide inclusion particle having a major diameter of 20 μm or above at a maximum in 50 g of the steel wire. The steel contains an oxide inclusion that has a CaO content between 15 and 55%, SiO2 content between 20 and 70%, an Al2O3 content of 35% or below, a MgO content of 20% or below and a Li2O content between 0.5 and 20%. The high-cleanliness steel has improved fatigue characteristics and improved cold workability.
摘要翻译：本发明涉及具有高疲劳强度和高冷加工性的高清洁度钢以及制造高清洁度钢的方法。该方法将Li含量为20-40％的Li-Si合金和/或Li 2 CO 3 3作为含Li物质添加到钢水中。在包括组合物调节，温度调节和炉渣精炼的钢包精炼过程的一系列步骤完成之后，将含Li物质添加到钢水中。高洁净度钢的总Li含量在0.020〜20ppm质量之间，并且在50g的钢丝中最多含有1.0或更小的直径为20μm以上的氧化物夹杂物。钢含有CaO含量为15〜55％，SiO 2含量为20〜70％，Al 2 O 3 O 3的氧化物夹杂物，含量为35％以下，MgO含量为20％以下，Li 2 O 3 O含量为0.5％〜20％。高清洁度钢具有改善的疲劳特性和改善的冷加工性能。

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