专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明专利

JP2013159802A Coil spring and production method therefor 审中-公开
标题翻译：线圈弹簧及其生产方法
公开(公告)号：JP2013159802A
公开(公告)日：2013-08-19
申请号：JP2012021251
申请日：2012-02-02
申请人： Nhk Spring Co Ltd , 日本発條株式会社
发明人： KUROKAWA SHINPEI , SUZUKI TAKESHI , ONO YOSHIKI , SHIBAIRI KOSUKE
IPC分类号： C22C38/00 , C21D7/06 , C21D9/02 , C22C38/34
CPC分类号： C21D7/06 , C21D9/02 , C21D2211/001 , C21D2211/002 , C21D2211/008 , C22C38/02 , C22C38/04 , C22C38/08
摘要： PROBLEM TO BE SOLVED: To provide a coil spring which achieves the reduction in material cost and the simplification of a production process without lowering a yield rate and is excellent in fatigue resistance.SOLUTION: A coil spring has a composition comprising, by mass, 0.5-0.7% C, 1.0-2.0% Si, 0.1-1.0% Mn, 0.1-1.0% Cr, 0.035% or less P, and 0.035% or less S, with the balance comprising iron and unavoidable impurities; and has a structure, in an arbitrary wire cross section, containing, by area ratio, 65% or more of bainite and 4-13% of retained austenite. The average C concentration in the retained austenite is 0.65-1.7%. In the residual stress distribution in an arbitrary wire cross section, when the cross section circle-equivalent diameter of a cross section of the wire is D (mm), the compressed residual stress layer is formed in a range of from the surface to 0.35 mm to D/4, and the maximum compressive residual stress is 800-2,000 MPa. In the Vickers hardness distribution in an arbitrary wire cross section, the hardness at the center is 550-650 HV, and a high-hardness layer harder by 50-500 HV than the center is formed from the surface to a depth of 0.05-0.3 mm. Both ends of the wire are ground to be flat.
摘要翻译：要解决的问题：提供一种实现材料成本降低和简化生产过程而不降低成品率并且耐疲劳性优异的螺旋弹簧。解决方案：螺旋弹簧具有质量分数为0.5 -0.7％C，1.0-2.0％Si，0.1-1.0％Mn，0.1-1.0％Cr，0.035％以下P和0.035％以下S，余量由铁和不可避免的杂质构成; 并且具有在任意的线截面中，以面积比为65％以上的贝氏体和4〜13％的残余奥氏体的结构。残留奥氏体中的平均C浓度为0.65〜1.7％。在任意线截面的残余应力分布中，当线的横截面的截面圆当量直径为D（mm）时，压缩残余应力层形成在从表面到0.35mm的范围内至D / 4，最大压缩残余应力为800-2000MPa。在任意线截面的维氏硬度分布中，中心处的硬度为550-650HV，并且从表面到深度为0.05-0.3，形成比中心更硬的50-500HV的高硬度层 mm。电线的两端研磨成平坦的。

2. 发明专利

JP2013204093A Steel for spring, method for manufacturing the same, and spring 审中-公开
标题翻译：弹簧钢，制造方法和弹簧
公开(公告)号：JP2013204093A
公开(公告)日：2013-10-07
申请号：JP2012074277
申请日：2012-03-28
申请人： Nhk Spring Co Ltd , 日本発條株式会社
发明人： SHIBAIRI KOSUKE , SUZUKI TAKESHI , ONO YOSHIKI , KUROKAWA SHINPEI
IPC分类号： C22C38/00 , C21D8/06 , C21D9/02 , C22C38/34 , F16F1/02
CPC分类号： C22C38/34 , C21D1/20 , C21D6/00 , C21D9/02 , C21D2211/001 , C21D2211/002 , C22C38/02 , C22C38/04 , C22C38/24
摘要： PROBLEM TO BE SOLVED: To provide steel for spring having high strength such that the tensile strength is ≥1,800 MPa and high ductility, and to provide a method for manufacturing the same and a spring.SOLUTION: Steel for spring has a whole composition including, by mass, 0.45-0.70% of C, 1.0-2.2% of Si, 0.1-1.0% of Mn, 0.1-1.0% of Cr, ≤0.035% of P, ≤0.035% of S, 0.05-0.35% of V, and the balance iron with inevitable impurities. The steel for spring is characterized in that when expressed in terms of area ratio of the internal structure in an optional cross section, the lower bainite is ≥65%, the retained austenite is 2.0-15%, and the remainder (including 0%) is martensite, wherein the average carbon concentration in the retained austenite is 1.0-2.7%.
摘要翻译：要解决的问题：提供具有高强度的弹簧用钢，使得拉伸强度≥1800MPa，高延展性，并提供其制造方法和弹簧。解决方案：弹簧钢具有全部组成，的Cu，0.45〜0.70％，Si：0.1〜1.0％，Cr：0.1〜1.0％，P：0.035％，S：0.035％，V：0.05〜0.35％余量铁与不可避免的杂质。弹簧钢的特征在于，当以任意的横截面表示内部结构的面积比时，下部贝氏体为≥65％，残留奥氏体为2.0〜15％，余量（含0％）是马氏体，残留奥氏体中的平均碳浓度为1.0〜2.7％。

3. 发明专利

JP2013036087A Material for spring and manufacturing method thereof, and spring 审中-公开
标题翻译：弹簧及其制造方法及弹簧材料
公开(公告)号：JP2013036087A
公开(公告)日：2013-02-21
申请号：JP2011173544
申请日：2011-08-09
申请人： Nhk Spring Co Ltd , 日本発條株式会社
发明人： SUZUKI TAKESHI , ONO YOSHIKI , KUROKAWA SHINPEI , SHIBAIRI KOSUKE
IPC分类号： C22C38/00 , B24C1/10 , C21D1/20 , C21D1/22 , C21D1/46 , C21D1/48 , C21D7/06 , C21D9/02 , C22C38/34 , F16F1/06
CPC分类号： C21D9/02 , C21D7/06 , C21D8/065 , C21D2211/001 , C21D2211/002 , C21D2211/008 , C22C38/02 , C22C38/04 , C22C38/18 , C22C38/34
摘要： PROBLEM TO BE SOLVED: To provide a material for spring having high strength, such as ≥1,900 MPa tensile strength and high ductility, and a manufacturing method thereof.SOLUTION: The material for spring is composed of an iron-based alloy containing prescibed components, and has the area-ratio of the internal structure in any cross section, whose tempered martensite is 30-80%, lower bainite is 5-70% and retained austenite is 8-15%, and the average carbon concentration in the retained austenite is 1.0-2.0 wt.%. The manufacturing method has the following steps in order in which an austenizing step with the temperature of >Acpoint to ≤(Acpoint+250°C), a quenching step of cooling at ≥20°C/sec cooling rate and holding at (Ms point-200°C) to ≤Ms point during 10-60 sec, an isothermal transformation step of heating at ≥10°C/sec rate and holding at >Ms point to ≤(Ms point+70°C) during 90 to 3,600sec, and a cooling step of cooling down to the room-temperature.
摘要翻译：要解决的问题：提供具有高强度的弹性材料，例如≥1900MPa的拉伸强度和高延展性的材料及其制造方法。
解决方案：弹簧材料由含有预制部件的铁基合金构成，其回火马氏体为30-80％，截面中的内部结构面积比为低，贝氏体为5- 70％，残留奥氏体为8〜15％，残留奥氏体中的平均碳浓度为1.0〜2.0重量％。制造方法按照以下顺序进行：温度> Ac 3 的奥氏体化步骤指向≤（Ac 3 点+ 250℃），冷却速度为≥20℃/秒的骤冷步骤，在10〜60秒内将（Ms点-200℃）保持在≤Ms点，在 ≥10℃/秒速率，并且在90〜3600秒内保持> Ms点至≤（Ms点+ 70℃），并且冷却至室温。版权所有（C）2013，JPO＆INPIT

4. 发明专利

JP2012111992A Spring and manufacture method thereof 有权
标题翻译：弹簧和制造方法
公开(公告)号：JP2012111992A
公开(公告)日：2012-06-14
申请号：JP2010260615
申请日：2010-11-22
申请人： Nhk Spring Co Ltd , 日本発條株式会社
发明人： SUZUKI TAKESHI , ONO YOSHIKI , KUROKAWA SHINPEI , SHIBAIRI KOSUKE
IPC分类号： C22C38/00 , C21D7/06 , C21D9/02 , C22C38/34 , F16F1/02
摘要： PROBLEM TO BE SOLVED: To provide a spring that has excellent fatigue resistance, reduces material costs and simplifies manufacturing processes.SOLUTION: A method for manufacturing the spring includes: a shaping step of shaping a wire rod having components consisting of, by mass, 0.5-0.7% of C, 1.0-2.0% of Si, 0.1-1.0% of Mn, 0.1-1.0% of Cr, 0.035% or less of P,0.035% or less of S, and the balance Fe and inevitable impurities, into a spring shape; a thermal treatment step of austenizing the spring at the temperature of Ac3 point or more (Ac3 point+250°C), and then cooling the spring at the rate of 20°C/sec or more, holding the spring for 400 sec or more at the temperature of (Ms point-20°C) to (Ms point+60°C), and cooling the spring to a room temperature; and a shot peening step of projecting a shot at the heat treated spring.
摘要翻译：要解决的问题：提供具有优异的耐疲劳性，降低材料成本并简化制造工艺的弹簧。解决方案：一种用于制造弹簧的方法包括：成形步骤，其具有以质量计为0.5-0.7％的C，1.0-2.0％的Si，0.1-1.0％的Mn， 0.1〜1.0％的Cr，0.035％以下的P，0.035％以下的S，余量为Fe和不可避免的杂质成为弹簧形状; 在Ac3点以上（Ac3点+250℃）的温度下对弹簧进行奥氏化的热处理工序，然后以20℃/秒以上的速度冷却弹簧，将弹簧保持400秒以上（Ms点-20℃）至（Ms点+ 60℃）的温度下，将弹簧冷却至室温; 以及在热处理弹簧处投射射击的喷丸硬化步骤。版权所有（C）2012，JPO＆INPIT

5. 发明专利

ES2664812T3 Muelle y método de fabricación del mismo 未知
公开(公告)号：ES2664812T3
公开(公告)日：2018-04-23
申请号：ES11814765
申请日：2011-08-04
申请人： NHK SPRING CO LTD
发明人： SUZUKI TAKESHI , ONO YOSHIKI , KUROKAWA SHIMPEI , SHIBAIRI KOSUKE
IPC分类号： C22C38/18 , B24C1/10 , C21D1/18 , C21D7/06 , C21D8/06 , C21D9/02 , C22C38/02 , C22C38/04 , F16F1/02 , F16F1/06
摘要： Muelle que consiste en,% en masa, el 0,5 al 0,7% de C, el 1,0 al 2,0% de Si, el 0,1 al 1,0% de Mn, el 0,1 al 1,0% de Cr, no más del 0,035% de P y no más del 0,035% de S y el resto de Fe e impurezas inevitables, donde el muelle tiene una estructura que incluye como mínimo un 65% de bainita y del 4 al 13% de austenita residual por relación superficial en una sección transversal, donde la austenita residual contiene carbono en una concentración media del 0,65 al 1,7%, donde la austenita residual tiene un diámetro de grano medio equivalente a un círculo máximo de 3 μm, la estructura incluye martensita del 5 al 30% en relación superficial en una sección transversal, el muelle tiene una capa de tensión residual de compresión en una sección transversal desde la superficie hasta una profundidad de 0,35 mm a D/4, donde D (mm) es un diámetro equivalente a un círculo de la sección transversal, la capa de tensión residual de compresión tiene una tensión residual máxima de compresión entre 800 y 2.000 MPa, y el muelle tiene una parte central con una dureza Vickers de 550 a 650 HV en una sección transversal y tiene una capa de gran dureza con una dureza superior a la de la parte central en 50 a 500 HV desde la superficie hasta una profundidad de 0,05 a 0,3 mm.

6. 发明专利

ES2765274T3 Elemento de resistencia y procedimiento de fabricación del mismo 未知
公开(公告)号：ES2765274T3
公开(公告)日：2020-06-08
申请号：ES14760929
申请日：2014-03-07
申请人： NHK SPRING CO LTD
发明人： KUROKAWA SHIMPEI , SUZUKI TAKESHI , SHIBAIRI KOSUKE
IPC分类号： C22C38/00 , C21D7/06 , C21D7/10 , C21D9/02 , C22C38/34 , F16F1/02
摘要： Elemento de resistencia que comprende, en % en masa, del 0.5 al 0.7% de C, del 1.0 al 2.0% de Si, del 0.1 al 1.0% de Mn, del 0.1 al 1.0% de Cr, el 0.035% o menos de P, el 0.035% o menos de S, y el resto de Fe e impurezas inevitables, en el que la relación de área de bainita es del 65% o más, y la densidad de dislocación promedio de una sección transversal libremente seleccionada es de 2.0 x 1016 m-2 o menos, una deformación por cizalladura residual es de 6.7 x 10-4 o menos, y una relación de área de austenita retenida es del 6.5% o menos, en el que la dureza Vickers en el centro de una sección transversal libremente seleccionada de un producto es de 450 a 650 HV.

7. 发明公开

EP2966186A4 STRENGTH MEMBER AND MANUFACTURING METHOD THEREFOR 有权转让
标题翻译：度元件及其制造方法
公开(公告)号：EP2966186A4
公开(公告)日：2016-11-23
申请号：EP14760929
申请日：2014-03-07
申请人： NHK SPRING CO LTD
发明人： KUROKAWA SHIMPEI , SUZUKI TAKESHI , SHIBAIRI KOSUKE
IPC分类号： C22C38/00 , C21D7/06 , C21D7/10 , C21D9/02 , C22C38/34 , F16F1/02
CPC分类号： C21D7/06 , C21D1/20 , C21D7/10 , C21D9/02 , C21D2211/002 , C21D2211/004 , C22C38/00 , C22C38/34
摘要： A strength member and a manufacturing method thereof in which settling resistance and yield strength can be substantially improved without reducing cost advantages or adding substantial process changes, is provided. A strength member comprises, by mass %, 0.5 to 0.7 % of C, 1.0 to 2.0 % of Si, 0.1 to 1.0 % of Mn, 0.1 to 1.0 % of Cr, 0.035 % or less of P, 0.035 % or less of S, and the balance of Fe and inevitable impurities, wherein an area ratio of bainite is 65 % or more, and an average dislocation density of a freely selected cross section is 2.0 × 10 16 m -2 or less.

8. 发明公开

EP2602350A4 SPRING AND MANUFACTURE METHOD THEREOF 有权转让
标题翻译： FEDER UND HERSTELLUNGSVERFAHREN DAVON
公开(公告)号：EP2602350A4
公开(公告)日：2015-06-24
申请号：EP11814765
申请日：2011-08-04
申请人： NHK SPRING CO LTD
发明人： SUZUKI TAKESHI , ONO YOSHIKI , KUROKAWA SHIMPEI , SHIBAIRI KOSUKE
IPC分类号： C22C38/18 , B24C1/10 , C21D1/18 , C21D7/06 , C21D8/06 , C21D9/02 , C22C38/02 , C22C38/04 , F16F1/02 , F16F1/06
CPC分类号： F16F1/021 , B24C1/10 , C21D1/18 , C21D7/06 , C21D8/065 , C21D9/02 , C21D2211/001 , C21D2211/002 , C21D2211/008 , C22C38/02 , C22C38/04 , C22C38/18
摘要： A spring with superior fatigue resistance and a production method therefor are provided by decreasing the material cost and simplifying the production process. The spring consists of, by mass %, 0.5 to 0.7 % of C, 1.0 to 2.0 % of Si, 0.1 to 1.0 % of Mn, 0.1 to 1.0 % of Cr, not more than 0.035 % of P, not more than 0.035 % of S, and the balance of Fe and inevitable impurities. The spring has a structure including not less than 65 % of bainite and 4 to 13 % of residual austenite by area ratio in a cross section, and the residual austenite contains carbon at an average concentration of 0.65 to 1.7 %. The spring has a compressive residual stress layer in a cross section from a surface to a depth of 0.35 mm to D/4, in which D (mm) in a circle-equivalent diameter of the cross section. The compressive residual stress layer has maximum compressive residual stress of 800 to 2000 MPa. The spring has a center portion with hardness of 550 to 650 HV in a cross section and has a high hardness layer with greater hardness than the center portion by 50 to 500 HV from a surface to a depth of 0.05 to 0.3 mm.
摘要翻译：通过降低材料成本并简化生产过程，提供了具有优异的耐疲劳性的弹簧及其制造方法。弹簧以质量％计含有C：0.5〜0.7％，Si：1.0〜2.0％，Mn：0.1〜1.0％，Cr：0.1〜1.0％，P：0.035％以下，0.035％以下的S，余量为Fe和不可避免的杂质。弹簧的截面积为贝氏体不少于65％，残余奥氏体的面积比为4〜13％，残留奥氏体含有平均浓度为0.65〜1.7％的碳。弹簧在从表面到深度为0.35mm至D / 4的截面中具有压缩残余应力层，其中横截面的圆当量直径为D（mm）。压缩残余应力层的最大压缩残余应力为800〜2000MPa。该弹簧具有截面硬度为550至650HV的中心部分，并且具有从表面到深度为0.05至0.3mm的高于中心部分的硬度高达50至500HV的高硬度层。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式