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1.发明申请公开(公告)号：US20100086432A1
公开(公告)日：2010-04-08
申请号：US12597919
申请日：2008-03-27
CPC分类号： C21C7/06 , C21C7/076 , C21D9/02 , C22C38/002 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/34 , Y02P10/242 , Y10S148/908
摘要： An object of this invention is to provide a steel for high-cleanliness spring which is useful for the production of a spring excellent in fatigue characteristics in high Si steels. The steel for high-cleanliness spring with excellent fatigue characteristics according to the invention contains: in terms of mass %, C: 1.2% or less (excluding 0%); Si: 1.8% to 4%; Mn: 0.1% to 2.0%; and total Al: 0.01% or less (excluding 0%), with the remainder being iron and inevitable impurities, in which the Si amount and a solute (SIMS) Ca amount in the steel satisfy a relationship of the following expression (1): Si×10−7≦solute (SIMS) Ca≦Si×5×10−7 (1) (in which each of the solute (SIMS) Ca and Si represents the amount thereof (mass %) in the steel).
摘要翻译： 本发明的目的是提供一种高清洁弹簧用钢，其可用于生产高Si钢中疲劳特性优异的弹簧。 根据本发明的具有优异疲劳特性的高洁净度弹簧钢，以质量％计含有C：1.2％以下（不含0％）。 Si：1.8％〜4％; Mn：0.1〜2.0％ 和总Al：0.01％以下（不含0％），其余为铁和不可避免的杂质，其中钢中的Si量和溶质（SIMS）Ca量满足下式（1）的关系： Si×10-7＆nlE;溶质（SIMS）Ca＆nlE; Si×5×10-7（1）（其中溶质（SIMS）Ca和Si各自表示钢中的量（质量％））。
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2.发明授权Steel for high-cleanliness spring with excellent fatigue characteristics and high-cleanliness spring 有权高清洁弹簧钢，具有优异的疲劳特性和高清洁度的弹簧公开(公告)号：US08187530B2
公开(公告)日：2012-05-29
申请号：US12597919
申请日：2008-03-27
CPC分类号： C21C7/06 , C21C7/076 , C21D9/02 , C22C38/002 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/34 , Y02P10/242 , Y10S148/908
摘要： An object of this invention is to provide a steel for high-cleanliness spring which is useful for the production of a spring excellent in fatigue characteristics in high Si steels. The steel for high-cleanliness spring with excellent fatigue characteristics according to the invention contains: in terms of mass %, C: 1.2% or less (excluding 0%); Si: 1.8% to 4%; Mn: 0.1% to 2.0%; and total Al: 0.01% or less (excluding 0%), with the remainder being iron and inevitable impurities, in which the Si amount and a solute (SIMS) Ca amount in the steel satisfy a relationship of the following expression (1): Si×10−7≦solute (SIMS) Ca≦Si×5×10−7 (1) (in which each of the solute (SIMS) Ca and Si represents the amount thereof (mass %) in the steel).
摘要翻译： 本发明的目的是提供一种高清洁弹簧用钢，其可用于生产高Si钢中疲劳特性优异的弹簧。 根据本发明的具有优异疲劳特性的高洁净度弹簧钢，以质量％计含有C：1.2％以下（不含0％）。 Si：1.8％〜4％; Mn：0.1〜2.0％ 和总Al：0.01％以下（不含0％），其余为铁和不可避免的杂质，其中钢中的Si量和溶质（SIMS）Ca量满足下式（1）的关系： Si×10-7＆nlE;溶质（SIMS）Ca＆nlE; Si×5×10-7（1）（其中溶质（SIMS）Ca和Si各自表示钢中的量（质量％））。
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3.发明授权Method for producing high cleanliness steel excellent in fatigue strength or cold workability 有权制造疲劳强度或冷加工性优异的高洁净度钢的方法公开(公告)号：US07608130B2
公开(公告)日：2009-10-27
申请号：US10564061
申请日：2004-12-17
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作为含Li的物质添加到钢水中。 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含量为35％以下，MgO含量为20％以下，Li2O含量为0.5〜20的氧化物夹杂物 ％。 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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4.发明授权Method for producing high cleanness steel excellent in fatigue strength or cold workability 有权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：US07615099B2
公开(公告)日：2009-11-10
申请号：US12108204
申请日：2008-04-23
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作为含Li的物质添加到钢水中。 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含量为35％以下，MgO含量为20％以下，Li2O含量为0.5〜20的氧化物夹杂物 ％。 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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5.发明申请METHOD FOR PRODUCING HIGH CLEANNESS STEEL EXCELLENT IN FATIGUE STRENGTH OR COLD WORKABILITY 有权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
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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6.发明申请Method for producing high cleanness steel excellent in fatigue strength or cold workability 有权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
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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7.发明申请公开(公告)号：US20090194204A1
公开(公告)日：2009-08-06
申请号：US12301544
申请日：2007-05-23
CPC分类号： F16F1/021 , C21D7/04 , C21D7/06 , C21D2211/004 , C22C38/002 , C22C38/005 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/08 , C22C38/12 , C22C38/18 , C22C38/24 , C22C38/28 , C22C38/34 , C22C38/40 , C22C38/44 , C22C38/46
摘要： High cleanliness spring steel useful in manufacturing a spring with SiO2-based inclusions being extremely controlled and excellent in fatigue properties is provided.High cleanliness spring steel which is steel containing; C: 1.2% (means mass %, hereafter the same with respect to the component) or below (not inclusive of 0%), Si: 1.2-4%, Mn: 0.1-2.0%, Al: 0.01% or below (not inclusive of 0%), and the balance comprising iron with inevitable impurities, wherein; the total of oxide-based inclusions of 4 or above of L (the large diameter of an inclusion)/D (the short diameter of an inclusion) and 25 μm or above of D and oxide-based inclusions of less than 4 L/D and 25 μm or above of L, in the oxide-based inclusions of 25 mass % or above of oxygen concentration and 70% (means mass %, hereafter the same with respect to inclusions) or above of SiO2 content when Al2O3+MgO+CaO+SiO2+MnO=100% is presumed, out of inclusions in the steel, is 20 nos./500 g or below.
摘要翻译： 提供了用于制造具有非常可控且具有优异的疲劳特性的具有SiO 2类夹杂物的弹簧的高清洁度弹簧钢。 高清洁弹簧钢是含钢; C：1.2％（表示质量％，以下相对于成分）以下（不包括0％），Si：1.2〜4％，Mn：0.1〜2.0％，Al：0.01％以下 包括0％），余量包含铁与不可避免的杂质，其中; L的4个以上的氧化物系夹杂物（夹杂物的大直径）/ D（夹杂物的短径）和25μm以上的D和氧化物系夹杂物的氧化物系夹杂物的总和小于4L / D 氧化物系夹杂物的氧化物为25质量％以上，氧浓度为25质量％以上，氧化铝系夹杂物为25质量％以上，Al 2 O 3 + MgO + CaO为70质量％以上（以下相对于夹杂物为相同） + SiO2 + MnO = 100％，假定钢中的夹杂物为20 nos./500 g以下。
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8.发明申请HIGH CLEANLINESS SPRING STEEL AND HIGH CLEANLINESS SPRING EXCELLENT IN FATIGUE PROPERTIES 审中-公开高清洁弹簧钢和高清洁弹性优异的疲劳性能公开(公告)号：US20100111748A1
公开(公告)日：2010-05-06
申请号：US12683672
申请日：2010-01-07
CPC分类号： F16F1/021 , C21D7/04 , C21D7/06 , C21D2211/004 , C22C38/002 , C22C38/005 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/08 , C22C38/12 , C22C38/18 , C22C38/24 , C22C38/28 , C22C38/34 , C22C38/40 , C22C38/44 , C22C38/46
摘要： High cleanliness spring steel useful in manufacturing a spring with SiO2-based inclusions being extremely controlled and excellent in fatigue properties is provided.High cleanliness spring steel which is steel containing;C: 1.2% (means mass %, hereafter the same with respect to the component) or below (not inclusive of 0%), Si: 1.2-4%, Mn: 0.1-2.0%, Al: 0.01% or below (not inclusive of 0%), and the balance comprising iron with inevitable impurities, wherein; the total of oxide-based inclusions of 4 or above of L (the large diameter of an inclusion)/D (the short diameter of an inclusion) and 25 μm or above of D and oxide-based inclusions of less than 4 L/D and 25 μm or above of L, in the oxide-based inclusions of 25 mass % or above of oxygen concentration and 70% (means mass %, hereafter the same with respect to inclusions) or above of SiO2 content when Al2O3+MgO+CaO+SiO2+MnO=100% is presumed, out of inclusions in the steel, is 20 nos./500 g or below.
摘要翻译： 提供了用于制造具有非常可控且具有优异的疲劳特性的具有SiO 2类夹杂物的弹簧的高清洁度弹簧钢。 高清洁弹簧钢是含钢; C：1.2％（表示质量％，以下相对于成分）以下（不包括0％），Si：1.2〜4％，Mn：0.1〜2.0％，Al：0.01％以下 包括0％），余量包含铁与不可避免的杂质，其中; D的4以上的氧化物系夹杂物（夹杂物的大直径）/ D（夹杂物的短径）和25μm以上的D和氧化物系夹杂物的氧化物系夹杂物的总和小于4L / D 在25质量％以上的氧浓度的氧化物系夹杂物中，当Al 2 O 3 + MgO + CaO的氧化物系夹杂物为25质量％以上时，相对于夹杂物为70质量％（以下与夹杂物相同） + SiO2 + MnO = 100％，假定钢中的夹杂物为20 nos./500 g以下。
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9.发明授权公开(公告)号：US08613809B2
公开(公告)日：2013-12-24
申请号：US12301544
申请日：2007-05-23
CPC分类号： F16F1/021 , C21D7/04 , C21D7/06 , C21D2211/004 , C22C38/002 , C22C38/005 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/08 , C22C38/12 , C22C38/18 , C22C38/24 , C22C38/28 , C22C38/34 , C22C38/40 , C22C38/44 , C22C38/46
摘要： High cleanliness spring steel useful in manufacturing a spring with SiO2-based inclusions being extremely controlled and excellent in fatigue properties is provided. High cleanliness spring steel which is steel containing; C: 1.2% (means mass %, hereafter the same with respect to the component) or below (not inclusive of 0%), Si: 1.2-4%, Mn: 0.1-2.0%, Al: 0.01% or below (not inclusive of 0%), and the balance comprising iron with inevitable impurities, wherein; the total of oxide-based inclusions of 4 or above of L (the large diameter of an inclusion)/D (the short diameter of an inclusion) and 25 μm or above of D and oxide-based inclusions of less than 4 L/D and 25 μm or above of L, in the oxide-based inclusions of 25 mass % or above of oxygen concentration and 70% (means mass %, hereafter the same with respect to inclusions) or above of SiO2 content when Al2O3+MgO+CaO+SiO2+MnO=100% is presumed, out of inclusions in the steel, is 20 nos./500 g or below.
摘要翻译： 提供了用于制造具有非常可控且具有优异的疲劳特性的具有SiO 2类夹杂物的弹簧的高清洁度弹簧钢。 高清洁弹簧钢是含钢; C：1.2％（表示质量％，以下相对于成分）以下（不包括0％），Si：1.2〜4％，Mn：0.1〜2.0％，Al：0.01％以下 包括0％），余量包含铁与不可避免的杂质，其中; L的4个以上的氧化物系夹杂物（夹杂物的大直径）/ D（夹杂物的短径）和25μm以上的D和氧化物系夹杂物的氧化物系夹杂物的总和小于4L / D 氧化物系夹杂物的氧化物为25质量％以上，氧浓度为25质量％以上，氧化物系夹杂物为25质量％以上，Al 2 O 3 + MgO + CaO为70质量％以上（以下相对于夹杂物为相同） + SiO2 + MnO = 100％，假定钢中的夹杂物为20 nos./500 g以下。
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公开(公告)号：US07429301B2
公开(公告)日：2008-09-30
申请号：US11284807
申请日：2005-11-23
申请人： Tomoko Sugimura , Koichi Sakamoto , Atsuhiko Yoshida , Sumie Suda
发明人： Tomoko Sugimura , Koichi Sakamoto , Atsuhiko Yoshida , Sumie Suda
CPC分类号： C22C38/02 , C22C38/002 , C22C38/04 , C22C38/34 , Y10S148/908
摘要： Disclosed herein is an ultra clean spring steel which contains inclusions easily elongated and broken into fine particles by hot rolling and which is easily adaptive to cold rolling and yields springs excelling in fatigue characteristics. The spring steel is characterized in that the wire contains oxide inclusions with a sulfur concentration no more than 10 mass % such that no less than 70% (in terms of numbers) of such inclusions, which exist in the outer layer outside one quarter of the diameter of the wire and have a width no smaller than 3 μm, satisfies the formula (1) below, CaO+Al2O3+SiO2+MnO+MgO>80 (mass %) . (1)
摘要翻译： 本发明公开了一种超清洁弹簧钢，它含有容易伸长的夹杂物，并且通过热轧将其细分成细颗粒，并且易于适应于冷轧，并且产生具有优异的疲劳特性的弹簧。 弹簧钢的特征在于，所述线材含有硫浓度不超过10质量％的氧化物夹杂物，使得存在于外部四分之一以外的外层中的不少于70％（以数量计） 线的直径并且具有不小于3μm的宽度，满足以下公式（1），<？在线公式描述=“在线公式”end =“lead”>> CaO + 2 O 3 + SiO 2 + MnO + MgO> 80（质量％）。 （1）<？in-line-formula description =“In-line Formulas”end =“tail”？>
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