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1. 发明授权

EP2434028B1 HOLLOW SEAMLESS PIPE FOR HIGH-STRENGTH SPRINGS 失效转让
公开(公告)号：EP2434028B1
公开(公告)日：2018-10-17
申请号：EP10775011.9
申请日：2010-05-14
申请人： Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.) , Shinko Metal Products Co., Ltd. , NHK Spring Co., Ltd.
发明人： HATANO, Hitoshi , TOYOTAKE, Kotaro
IPC分类号： C21D8/10 , C21D9/02 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/08 , C22C38/12 , C22C38/14 , C22C38/16 , C22C38/18
CPC分类号： C21D9/02 , C21D8/105 , C21D2211/005 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/08 , C22C38/12 , C22C38/14 , C22C38/16 , C22C38/18 , Y10T428/12292
摘要： The present invention provides a hollow seamless pipe for high-strength springs, in which the occurrence of decarburization in an inner peripheral surface and outer peripheral surface is reduced as much as possible, surface layer parts can be sufficiently hardened in the outer peripheral surface and the inner peripheral surface in a quenching step at the time of spring production, and sufficient fatigue strength can be secured in springs to be formed. The present invention relates to a hollow seamless pipe for a high-strength spring, which is composed of a steel material comprising 0.2 to 0.7 mass% of C, 0.5 to 3 mass% of Si, 0.1 to 2 mass% of Mn, more than 0 mass% and 0.1 mass% or less of Al, more than 0 mass% and 0.02 mass% or less of P, more than 0 mass% and 0.02 mass% or less of S, and more than 0 mass% and 0.02 mass% or less of N, wherein the C content in an inner peripheral surface and outer peripheral surface of the hollow seamless pipe is 0.10 mass% or more, and a thickness of a whole decarburized layer in each of the inner peripheral surface and the outer peripheral surface is 200 µm or less.

3. 发明公开

EP2835439A1 HOLLOW SEAMLESS PIPE FOR HIGH-STRENGTH SPRING 有权转让
标题翻译： HOHLES NAHTLOSES ROHRFÜRHOCHFESTE FEDER
公开(公告)号：EP2835439A1
公开(公告)日：2015-02-11
申请号：EP13773106.3
申请日：2013-04-02
申请人： Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.) , Shinko Metal Products Co., Ltd. , NHK Spring Co., Ltd.
发明人： KOCHI, Takuya , HATANO, Hitoshi , TAMURA, Eiichi , TOYOTAKE, Kotaro , YAJIMA, Takashi , TANGE, Akira
IPC分类号： C22C38/00 , C22C38/38 , C22C38/58 , C21D8/10 , C21D9/02 , C21D9/08
CPC分类号： F16L9/02 , C21D6/008 , C21D8/10 , C21D9/02 , C21D9/08 , C21D2211/004 , C22C38/001 , C22C38/002 , C22C38/005 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/20 , C22C38/24 , C22C38/28 , C22C38/34 , C22C38/42 , C22C38/44 , C22C38/46 , C22C38/48 , C22C38/50 , C22C38/54 , F16F1/021
摘要： A hollow seamless pipe for a high-strength spring in the present invention includes a steel material in which chemical component compositions are properly adjusted, wherein a depth of a whole decarburized layer in an inner surface layer part is 100 µm or less, a depth of a flaw which is present in an inner surface is 40 µm or less, a width of the flaw is 60 µm or less, and a number density of a carbide which has a circle equivalent diameter of 500 nm or more and is present in the inner surface layer part is 1.8×10 -2 particles/µm 2 or less.
摘要翻译：本发明的高强度弹簧用中空无缝管包括适当调整化学成分组成的钢材，其中，内表面层部的整个脱碳层的深度为100μm以下，深度为存在于内表面的缺陷为40μm以下，缺陷的宽度为60μm以下，圆当量直径为500nm以上并存在于内部的碳化物的数密度表层部分为1.8×10 -2粒子/μm2以下。

4. 发明公开

EP2434028A1 HOLLOW SEAMLESS PIPE FOR HIGH-STRENGTH SPRINGS 失效转让
标题翻译： HOHLES NAHTLOSES ROHRFÜRHOCHFESTE FEDERN
公开(公告)号：EP2434028A1
公开(公告)日：2012-03-28
申请号：EP10775011.9
申请日：2010-05-14
申请人： Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.) , Shinko Metal Products Co., Ltd. , Nhk Spring Co., Ltd.
发明人： HATANO, Hitoshi , TOYOTAKE, Kotaro
IPC分类号： C22C38/00 , C21D7/12 , C21D8/06 , C22C38/06 , C22C38/58 , F16F1/02
CPC分类号： C21D9/02 , C21D8/105 , C21D2211/005 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/08 , C22C38/12 , C22C38/14 , C22C38/16 , C22C38/18 , Y10T428/12292
摘要： The present invention provides a hollow seamless pipe for high-strength springs, in which the occurrence of decarburization in an inner peripheral surface and outer peripheral surface is reduced as much as possible, surface layer parts can be sufficiently hardened in the outer peripheral surface and the inner peripheral surface in a quenching step at the time of spring production, and sufficient fatigue strength can be secured in springs to be formed. The present invention relates to a hollow seamless pipe for a high-strength spring, which is composed of a steel material comprising 0.2 to 0.7 mass% of C, 0.5 to 3 mass% of Si, 0.1 to 2 mass% of Mn, more than 0 mass% and 0.1 mass% or less of Al, more than 0 mass% and 0.02 mass% or less of P, more than 0 mass% and 0.02 mass% or less of S, and more than 0 mass% and 0.02 mass% or less of N, wherein the C content in an inner peripheral surface and outer peripheral surface of the hollow seamless pipe is 0.10 mass% or more, and a thickness of a whole decarburized layer in each of the inner peripheral surface and the outer peripheral surface is 200 µm or less.
摘要翻译：本发明提供一种用于高强度弹簧的中空无缝管，其中尽可能地减少内周面和外周面中的脱碳的发生，表层部分可以在外周面中充分硬化，在弹簧产生时的淬火步骤中的内周面，并且可以确保在要形成的弹簧中具有足够的疲劳强度。本发明涉及一种高强度弹簧用中空无缝管，其特征在于，由含有0.2〜0.7质量％的C，0.5〜3质量％的Si，0.1〜2质量％的Mn，超过 0质量％以下，Al：0.1质量％以下，P：0质量％以上0.02质量％以下，S：0质量％以上且0.02质量％以下，0质量％以上且0.02质量％以下的N，其中，所述中空无缝管的内周面和外周面的C含量为0.10质量％以上，所述内周面和外周面的整个脱碳层的厚度为200μm以下。

5. 发明授权

EP2860275B1 SEAMLESS STEEL PIPE FOR HOLLOW SPRING 有权
标题翻译：空心弹簧用无缝钢管
公开(公告)号：EP2860275B1
公开(公告)日：2017-10-25
申请号：EP13804561.2
申请日：2013-06-11
申请人： Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.) , Shinko Metal Products Co., Ltd.
发明人： KOCHI, Takuya , HATANO, Hitoshi , TAMURA, Eiichi , TOYOTAKE, Kotaro
IPC分类号： C21D9/02 , C21D9/08 , C22C38/00 , C22C38/38 , C22C38/58 , C22C38/04 , C22C38/24 , C22C38/26 , C22C38/28 , C22C38/32 , C22C38/34 , C22C38/42 , C22C38/46 , C22C38/50 , C22C38/54 , C22C38/02 , C22C38/06 , C22C38/18 , C22C38/20 , C22C38/22
CPC分类号： C22C38/54 , C21D9/02 , C21D9/08 , C21D2211/004 , C21D2211/005 , C21D2211/009 , C22C38/001 , C22C38/002 , C22C38/005 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/18 , C22C38/20 , C22C38/22 , C22C38/24 , C22C38/26 , C22C38/28 , C22C38/32 , C22C38/34 , C22C38/42 , C22C38/46 , C22C38/50 , Y10T428/12292
摘要： A seamless steel pipe for a hollow spring includes C: 0.2 to 0.7 mass%, Si: 0.5 to 3 mass%, Mn: 0.1 to 2 mass%, Cr: 3 mass% or less (excluding 0 mass%), Al: 0.1 mass% or less (excluding 0 mass%), P: 0.02 mass% or less (excluding 0 mass%), S: 0.02 mass% or less (excluding 0 mass%) and N: 0.02 mass% or less (excluding 0 mass%). A residual austenite content in an inner surface layer part of the steel pipe is 5 vol.% or less. An average grain size of a ferrite-pearlite structure in the inner surface layer part of the steel pipe is 18µm or less. A number density of a carbide having a circle equivalent diameter of 500 nm or more and being present in the inner surface layer part of the steel pipe is 1.8×10 -2 particles/µm 2 or less.

6. 发明公开

EP2860275A1 SEAMLESS STEEL PIPE FOR HOLLOW SPRING 有权
标题翻译：无缝钢管空心SPRING
公开(公告)号：EP2860275A1
公开(公告)日：2015-04-15
申请号：EP13804561.2
申请日：2013-06-11
申请人： Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.) , Shinko Metal Products Co., Ltd.
发明人： KOCHI, Takuya , HATANO, Hitoshi , TAMURA, Eiichi , TOYOTAKE, Kotaro
IPC分类号： C22C38/00 , C22C38/38 , C22C38/58
CPC分类号： C22C38/54 , C21D9/02 , C21D9/08 , C21D2211/004 , C21D2211/005 , C21D2211/009 , C22C38/001 , C22C38/002 , C22C38/005 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/18 , C22C38/20 , C22C38/22 , C22C38/24 , C22C38/26 , C22C38/28 , C22C38/32 , C22C38/34 , C22C38/42 , C22C38/46 , C22C38/50 , Y10T428/12292
摘要： A seamless steel pipe for a hollow spring includes C: 0.2 to 0.7 mass%, Si: 0.5 to 3 mass%, Mn: 0.1 to 2 mass%, Cr: 3 mass% or less (excluding 0 mass%), Al: 0.1 mass% or less (excluding 0 mass%), P: 0.02 mass% or less (excluding 0 mass%), S: 0.02 mass% or less (excluding 0 mass%) and N: 0.02 mass% or less (excluding 0 mass%). A residual austenite content in an inner surface layer part of the steel pipe is 5 vol.% or less. An average grain size of a ferrite-pearlite structure in the inner surface layer part of the steel pipe is 18µm or less. A number density of a carbide having a circle equivalent diameter of 500 nm or more and being present in the inner surface layer part of the steel pipe is 1.8×10 -2 particles/µm 2 or less.

7. 发明授权

EP2145705B1 SEAMLESS STEEL PIPE AND HOLLOW SPRING UTILIZING THE SEAMLESS STEEL PIPE 失效
标题翻译： NAHTLOSES STAHLROHR UND DAS NAHTLOSE STAHLROHR VERWENDENDE HOHLFEDER
公开(公告)号：EP2145705B1
公开(公告)日：2016-08-24
申请号：EP07738603.5
申请日：2007-03-14
申请人： Shinko Metal Products Co., Ltd. , NHK Spring Co., Ltd.
发明人： TOYOTAKE, Kotaro , IWAYA, Koji , MINAMI, Tomoyuki , TAKAMURA, Noritoshi
IPC分类号： B21C23/08 , B21B21/00 , B21C1/22 , C22C38/00 , C22C38/46 , F16F1/02
CPC分类号： B21B19/04 , B21B1/42 , B21C23/007 , B21C23/08 , B21C23/085 , B21F3/02 , C21D9/08 , C22C38/04 , C22C38/34 , C22C38/46 , F16F1/04 , F16F1/042 , F16F1/06 , F16F1/18

8. 发明公开

EP2881479A1 ALLOY MATERIAL, CONTACT PROBE, AND CONNECTION TERMINAL 有权转让
标题翻译：合金材料，以及接触式探头连接端子
公开(公告)号：EP2881479A1
公开(公告)日：2015-06-10
申请号：EP13825678.9
申请日：2013-08-02
申请人： Yamamoto Precious Metal Co. Ltd. , Shinko Metal Products Co., Ltd. , NHK Spring Co., Ltd.
发明人： ANRAKU, Teruo , AINOYA, Masayuki , KUBOTA, Tomohiro , TOYOTAKE, Kotaro , MINAMI, Tomoyuki , TAKAMURA, Noritoshi , TAKAHASHI, Humio
IPC分类号： C22C30/02 , C22C5/04 , C22F1/14 , C22F1/16 , G01R1/067 , H01L21/66 , C22F1/00
CPC分类号： G01R1/073 , B01J2/00 , C12Q1/00 , C22C5/04 , C22C30/02 , G01R1/06722 , G01R3/00 , G01R31/2886 , H01L2221/00
摘要： Provided are an alloy material having excellent conductivity, and further having high hardness and excellent workability for use in a contact probe; and a contact probe and a connection terminal each of which consists of the alloy material. A composition range of a ternary alloy of silver (Ag), palladium (Pd), and copper (Cu) contains 17 at% to 25 at% of Ag, 30 at% to 45 at% of Pd, and 30 at% to 53 at% of Cu. At least one of manganese (Mn), tin (Sn), silicon (Si), antimony (Sb), titanium (Ti) and magnesium (Mg) is added to the composition in a range of 4.5 at% or less, in which the Mn in a range of 0.5 at% to 3.5 at%, the Sn in a range of 1 at% to 2 at%, the Si in a range of 0.5 at% to 2 at%, the Sb in a range of 0.5 at% to 3 at%, the Ti in a range of 0.5 at% to 2 at%, and the Mg in a range of 0.5 at% to 3.5 at% are added to the composition.

9. 发明公开

EP2145705A1 SEAMLESS STEEL PIPE, HOLLOW SPRING UTILIZING SEAMLESS STEEL PIPE, AND PROCESS FOR MANUFACTURING THE SAME 失效
标题翻译：无缝钢管无缝钢管二手中空弹簧
公开(公告)号：EP2145705A1
公开(公告)日：2010-01-20
申请号：EP07738603.5
申请日：2007-03-14
申请人： Shinko Metal Products Co., Ltd. , NHK Spring Co., Ltd.
发明人： TOYOTAKE, Kotaro , IWAYA, Koji , MINAMI, Tomoyuki , TAKAMURA, Noritoshi
IPC分类号： B21C23/08 , B21B21/00 , B21C1/22 , C22C38/00 , C22C38/46
CPC分类号： B21B19/04 , B21B1/42 , B21C23/007 , B21C23/08 , B21C23/085 , B21F3/02 , C21D9/08 , C22C38/04 , C22C38/34 , C22C38/46 , F16F1/04 , F16F1/042 , F16F1/06 , F16F1/18
摘要： There are provided: a seamless steel pipe formed from a cylindrical steel material billet through a hot isostatic extrusion step, wherein a depth of a contiguous flaw formed on an inner periphery surface and an outer periphery surface of the steel pipe is 50 µm or less; a hollow spring obtained by forming a hollow body in a shape of a coil or a bar or a bar with curved part from the seamless steel pipe made of spring steel and applying a surface treatment to the hollow body so that the hollow body has compressive residual stress; and a method for producing seamless steel pipe including: a billet molding step; a first heating step; a hot isostatic extrusion step; a second heating step; an extension step; a third heating step; and a pickling step.

10. 发明授权

EP2881479B1 ALLOY MATERIAL, CONTACT PROBE, AND CONNECTION TERMINAL 有权转让
标题翻译：合金材料，接触探头和连接端子
公开(公告)号：EP2881479B1
公开(公告)日：2017-10-04
申请号：EP13825678.9
申请日：2013-08-02
申请人： Yamamoto Precious Metal Co., Ltd. , Shinko Metal Products Co., Ltd. , NHK Spring Co., Ltd.
发明人： ANRAKU, Teruo , AINOYA, Masayuki , KUBOTA, Tomohiro , TOYOTAKE, Kotaro , MINAMI, Tomoyuki , TAKAMURA, Noritoshi , TAKAHASHI, Humio
IPC分类号： C22C30/02 , C22C5/04 , C22F1/14 , C22F1/16 , G01R1/067 , H01L21/66 , C22F1/00
CPC分类号： G01R1/073 , B01J2/00 , C12Q1/00 , C22C5/04 , C22C30/02 , G01R1/06722 , G01R3/00 , G01R31/2886 , H01L2221/00

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