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    PROCESS FOR MANUFACTURING SEAMLESS STEEL PIPE, HOLLOW SPRING UTILIZING SEAMLESS STEEL PIPE
    3.
    发明申请
    PROCESS FOR MANUFACTURING SEAMLESS STEEL PIPE, HOLLOW SPRING UTILIZING SEAMLESS STEEL PIPE 审中-公开
    制造无缝钢管的方法，使用无缝钢管的中空弹簧

    公开(公告)号：US20130239637A1

    公开(公告)日：2013-09-19

    申请号：US13892009

    申请日：2013-05-10

    Applicant: SHINKO METAL PRODUCTS CO., LTD. ,  NHK SPRING CO., LTD.

    Inventor： Kotaro TOYOTAKE ,  Koji Iwaya ,  Tomoyuki Minami ,  Noritoshi Takamura

    IPC: B21B19/04

    CPC classification number: 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

    Abstract: 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.

    Abstract translation: 提供了一种通过热等静压挤出步骤由圆柱形钢材坯料形成的无缝钢管，其中在钢管的内周表面和外周表面上形成的邻接缺陷的深度为50μm以下; 通过从由弹簧钢制成的无缝钢管形成具有弯曲部的线圈或棒或棒的中空体的空心弹簧，并对中空体进行表面处理，使得中空体具有压缩残余 强调; 以及生产无缝钢管的方法，包括：坯料成型步骤; 第一加热步骤; 热等静压挤压步骤; 第二加热步骤; 延伸步骤 第三加热步骤; 和酸洗步骤。

    Coil spring
    4.
    发明授权
    Coil spring 有权

    公开(公告)号：US10995811B2

    公开(公告)日：2021-05-04

    申请号：US16088665

    申请日：2017-03-30

    Applicant: NHK SPRING Co., Ltd.

    Inventor： Toshinori Watanabe ,  Hidemasa Ito ,  Noritoshi Takamura ,  Fumio Yamamoto ,  Fumio Takahashi

    IPC: F16F1/04 ,  F16F1/06

    Abstract: The present invention provides a coil spring, in which a corresponding portion is provided at an end portion in a direction of a coil axis, the corresponding portion having a whole size in the direction of the coil axis of the plurality of wire materials adjacent to each other in the direction of the coil axis equal to a maximum value of a gap in the direction of the coil axis between wire materials adjacent to each other in the direction of the coil axis of the coil spring, a gap in the direction of the coil axis between the corresponding portion and a wire material adjacent to the corresponding portion on an inner side in the direction of the coil axis is smaller than a wire height in an active coil portion of the coil spring, and at the end portion of the direction of the coil axis, a gap in the direction of the coil axis between a portion extending around the coil axis from the corresponding portion to a distal end portion side of the wire material and a wire material adjacent to the portion on the inner side in the direction of the coil axis gradually decreases from the corresponding portion toward the distal end portion side of the wire material around the coil axis.

    ELASTIC MEMBER AND WIRE FOR ELASTIC MEMBER
    5.
    发明申请
    ELASTIC MEMBER AND WIRE FOR ELASTIC MEMBER 审中-公开

    公开(公告)号：US20180180126A1

    公开(公告)日：2018-06-28

    申请号：US15740634

    申请日：2016-06-28

    Applicant: NHK SPRING CO., LTD.

    Inventor： Toshio Kazama ,  Noritoshi Takamura ,  Shigeki Ishikawa ,  Takeshi Suzuki

    IPC: F16F1/02 ,  F16F1/06 ,  F16F1/14 ,  C22C21/00 ,  B60G21/055

    Abstract: An elastic member is an elastic member formed of a wire having a cross section that is substantially circular, the cross section being orthogonal to a longitudinal direction, and the elastic member being expandable and contractible in a predetermined direction; and including: a first alloy portion that is made of an aluminum alloy having a tensile strength larger than 950 MPa and equal to or less than 1100 MPa at room temperature; and a second alloy portion configured to cover the first alloy portion, the second alloy portion having a thickness in a radial direction smaller than a radius of the first alloy portion, and being made of an aluminum alloy having a tensile strength of 100 MPa to 650 MPa at room temperature.

    ALLOY MATERIAL, CONTACT PROBE, AND CONNECTION TERMINAL
    7.
    发明申请
    ALLOY MATERIAL, CONTACT PROBE, AND CONNECTION TERMINAL 有权
    合金材料，接触探头和连接端子

    公开(公告)号：US20150168455A1

    公开(公告)日：2015-06-18

    申请号：US14418964

    申请日：2013-08-02

    Applicant: Yamamoto Precious Metal Co., Ltd. ,  Shinko Metal Products Co., Ltd. ,  NHK Spring Co., Ltd.

    Inventor： Teruo Anraku ,  Masayuki Ainoya ,  Tomohiro Kubota ,  Kotaro Toyotake ,  Tomoyuki Minami ,  Noritoshi Takamura ,  Humio Takahashi

    IPC: G01R1/073 ,  C22C5/04 ,  G01R31/28 ,  C22C30/02

    CPC classification number: G01R1/073 ,  B01J2/00 ,  C12Q1/00 ,  C22C5/04 ,  C22C30/02 ,  G01R1/06722 ,  G01R3/00 ,  G01R31/2886 ,  H01L2221/00

    Abstract: An alloy material includes: a composition containing 17 at % to 25 at % of silver (Ag), 30 at % to 45 at % of palladium (Pd), and 30 at % to 53 at % of copper (Cu) in a composition range of a ternary alloy of Ag, Pd, and Cu; and at least one of manganese (Mn), tin (Sn), silicon (Si), antimony (Sb), titanium (Ti) and magnesium (Mg) added to the composition in a range of 4.5 at % or less, and 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.

    Abstract translation: 一种合金材料包括：组合物，其含有17原子％至25原子％的银（Ag），30原子％至45原子％的钯（Pd）和30原子％至53原子％的铜（Cu） Ag，Pd和Cu三元合金的范围; 并且在4.5质量％以下的范围内添加到组合物中的锰（Mn），锡（Sn），硅（Si），锑（Sb），钛（Ti）和镁（Mg）中的至少一种， Mn在0.5at％至3.5at％的范围内，Sn在1at％至2at％的范围内，Si在0.5at％至2at％的范围内，Sb在0.5at％的范围内， 至3原子％，将Ti在0.5at％至2at％的范围内，Mg在0.5at％至3.5at％的范围内加入到组合物中。

    RING-SHAPED SPRING AND METHOD FOR MANUFACTURING SAME
    9.
    发明申请
    RING-SHAPED SPRING AND METHOD FOR MANUFACTURING SAME 有权
    环形弹簧及其制造方法

    公开(公告)号：US20140367902A1

    公开(公告)日：2014-12-18

    申请号：US14374320

    申请日：2013-01-30

    Applicant: NHK SPRING CO., LTD.

    Inventor： Noritoshi Takamura ,  Fumio Takahashi

    IPC: F16F1/34 ,  B21F35/04

    CPC classification number: F16F1/34 ,  B21D11/10 ,  B21D53/16 ,  B21F35/04 ,  B23K26/26 ,  B23K26/32 ,  B23K2101/32 ,  B23K2103/04 ,  B23K2103/50 ,  B23P15/00 ,  C21D6/008 ,  C21D9/02 ,  C22C38/00 ,  C22C38/02 ,  C22C38/04 ,  C22C38/08 ,  C22C38/18 ,  C22C38/34 ,  C22C38/38 ,  F16F1/027 ,  F16F2226/048

    Abstract: An inexpensive ring spring having high strength and a method for producing the same, are provided. The ring spring can be obtained, for example, by raw material preparation, bending formation, welding, and disk formation performed in this order. The ring spring is formed to have no edge by welding two edge parts of the raw material, and has a welded metal part that is formed at the interface of the two edge parts of the raw material, and a welded heat-affected zone that is formed around the welded metal part and heated by welding, and exhibits tensile strength of 1000 MPa or more. Since the ring spring has sufficient tensile strength as a disk spring and a wave spring, quenching and tempering are not necessary. Furthermore, since the product can be prevented from being deformed due to quenching and tempering, dimensional accuracy of the product can be improved.

    Abstract translation: 提供了一种具有高强度的便宜的环形弹簧及其制造方法。 环形弹簧可以例如通过原料制备，弯曲形成，焊接和盘形来获得。 环形弹簧通过焊接原材料的两个边缘部分而形成为没有边缘，并且具有形成在原材料的两个边缘部分的界面处的焊接金属部分和焊接的热影响区域 形成在焊接金属部件周围并通过焊接加热，并显示出1000MPa以上的拉伸强度。 由于环形弹簧作为盘簧和波形弹簧具有足够的拉伸强度，因此不需要淬火和回火。 此外，由于可以防止产品由于淬火和回火而变形，因此可以提高产品的尺寸精度。

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