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    Ni-Cr-Co-BASED ALLOY HAVING HIGH-TEMPERATURE CORROSION RESISTANCE PROPERTIES, AND POPPET VALVE HAVING SURFACE MODIFIED WITH SAME
    2.
    发明公开
    Ni-Cr-Co-BASED ALLOY HAVING HIGH-TEMPERATURE CORROSION RESISTANCE PROPERTIES, AND POPPET VALVE HAVING SURFACE MODIFIED WITH SAME 有权
    合金具有高温耐腐蚀性和板甲阀，其加工表面的Ni-Cr-Co基的

    公开(公告)号：EP2915892A1

    公开(公告)日：2015-09-09

    申请号：EP13851676.0

    申请日：2013-10-08

    申请人： Fukuda Metal Foil & Powder Co., Ltd. ,  Nittan Valve Co., Ltd.

    发明人： OTOBE, Katsunori ,  NISHIMURA, Shinichi ,  KURAHASHI, Kazunori ,  TAKAHASHI, Yoshihiro

    IPC分类号： C22C27/06 ,  C22C30/00

    CPC分类号： C22C27/06 ,  C22C30/00 ,  F01L3/04 ,  F01L2103/00 ,  F01L2820/01 ,  F16K25/005 ,  F16K27/00

    摘要： Provided are: a surface-coating material having excellent cracking resistance and peeling resistance and also having excellent high-temperature corrosion resistance properties; and a poppet valve coated with the surface-coating material. A Ni-Cr-Co-based alloy according to the present invention comprises 40.0 to 50.0 mass% of Cr, 10.0 to 20.0 mass% of Co, 0.5 to 5.0 mass% of Nb, 0.01 to 5.0 mass% of Fe and 0.1 to 3.0 mass% of Si, with the remainder being 26.0 to 40.0 mass% of Ni and unavoidable impurities. The Ni-Cr-Co-based alloy may additionally comprise one or more elements selected from Mo, W, Mn, Ti, Al, B and C in a total amount of 5.0 mass% or less, wherein the content of each of Ti and Al is 3.0 mass% or less and the content of each of B and C is 1.0 mass% or less. In the poppet valve according to the present invention, at least a face portion is coated with the Ni-Cr-Co-based alloy.

    摘要翻译： 本发明提供：具有优异的表面涂层材料开裂性和耐剥离性，因此具有优异的高温耐腐蚀性; 和提升阀表面涂布有涂布材料。 基于镍 - 铬 - 钴基合金雅定到本发明包括的Cr质量40.0〜50.0％，10.0〜20.0％的Co的质量，将Nb 0.5〜5.0质量％，0点01分对于Fe为5.0质量％和0.1〜3.0 的Si的质量％，剩余部分为26.0〜40.0％的Ni和不可避免的杂质的质量。 的Ni基铬 - 钴基合金可以另外包括在质量以下的5.0％的总量选自Mo，W，锰，钛，铝，B和C中的一种或多种元素，worin每个的Ti的内容和 人是3.0质量％或更低，和每一B的含量，C是按质量计的1.0％以下。 在提升阀gemäß到本发明中，至少一个面部分涂覆有所述的Ni基铬 - 钴基合金。

    POPPET VALVE AND METHOD FOR MANUFACTURING SAME
    7.
    发明授权
    POPPET VALVE AND METHOD FOR MANUFACTURING SAME 有权
    弹簧阀门及其制造方法

    公开(公告)号：EP3088776B1

    公开(公告)日：2018-03-07

    申请号：EP14896279.8

    申请日：2014-08-27

    申请人： Nittan Valve Co., Ltd.

    发明人： MIKAMI, Maiku ,  KURAHASHI, Kazunori

    IPC分类号： F16K1/36 ,  B21K1/24 ,  C22F1/00 ,  C22F1/10 ,  F01L3/20 ,  B21K1/22 ,  B23P15/00 ,  F01L3/02

    CPC分类号： F01L3/20 ,  B21K1/22 ,  B23P15/002 ,  C21D7/02 ,  C21D7/13 ,  C21D9/0068 ,  F01L3/02 ,  F01L2103/00 ,  F01L2103/01 ,  F01L2820/02

    摘要： [Abstract] Stiffness strength of a seat surface in a poppet valve produced by forging is made to be more uniform. [Problem] [Solution] There is provided a method for manufacturing a poppet valve 10, in which a valve head 14 having a seat surface N is provided in one end of a valve stem 12 in a longitudinal direction, by forging, wherein an intermediate valve head 14' in a intermediate valve products 10' is provided with a pressing protrusions 15 in a region serving as the seat surface N after forging, the pressing protrusions 15 having a peak 15a positioned in a normal direction K2 of the seat surface N on a basis of the seat surface N of the forged valve head 14, in a sectional view the peak 15a of the pressing protrusions 15 is positioned on a normal line K2 passing a reference point P3 set on a virtual line (line segment K) connecting a base point P1 in an inner diameter side and a base point P2 in an outer diameter side of the seat surface N, and as viewed in a center axis X1 direction of the valve stem 12, a position of the reference point P3 is set such that a relation between a length L1 from the base point P1 in the inner diameter side to the reference point P3 and a length L2 from the base point P2 in the outer diameter side to the reference point P3 meets a formula of L1/L2 ‰¤ 0.5.

    METHOD OF MANUFACTURING INTERMEDIATE PRODUCT WITH ENGINE VALVE BOSS PORTION
    8.
    发明公开
    METHOD OF MANUFACTURING INTERMEDIATE PRODUCT WITH ENGINE VALVE BOSS PORTION 审中-公开

    公开(公告)号：EP3871800A1

    公开(公告)日：2021-09-01

    申请号：EP18937572.8

    申请日：2018-10-26

    申请人： Nittan Valve Co., Ltd.

    发明人： ICHIMIYA, Atsuyuki ,  KURAHASHI, Kazunori

    IPC分类号： B21J5/08

    摘要： Provided is a method of manufacturing an engine valve intermediate product such as will cause only a boss portion for formation of a piston portion and/or vane portion to be imparted with the required high strength, and such as will permit the boss portion to be formed at any desired location separated by some distance from a valve head forming portion at a stem forming portion. A method of manufacturing an engine valve intermediate product (2) with a boss portion (11) at which a valve head forming portion (4), a maximum outside diameter of which is greater than that of a stem forming portion (3), is present in integral fashion, and at which the boss portion (11), an outside diameter of which is greater than that of the stem forming portion (3), is formed in integral fashion at an outer circumferential surface at an intermediate location on the stem forming portion, comprising a stem retaining operation in which an intermediate location of the stem forming portion (3) is retained by a plurality of intermediate jigs (6a through 6c) capable of being removably installed radially with respect to a center of the stem forming portion (3), and a base end portion (3b) is retained by a base end jig (5); and a stem enlarging operation in which compressive forces are applied from both ends of the intermediate product (2) and the boss portion (11) is formed as the intermediate product (2) is made to rotate and alternating loads that cause tensile forces and compressive forces to act in repeated and alternating fashion at the outer circumferential surface of the stem forming portion (3) are applied thereto.

    POPPET VALVE AND METHOD FOR MANUFACTURING SAME
    9.
    发明公开
    POPPET VALVE AND METHOD FOR MANUFACTURING SAME 有权
    凯利维尔VERFAHREN ZUR HERSTELLUNG DAVON

    公开(公告)号：EP3088776A1

    公开(公告)日：2016-11-02

    申请号：EP14896279.8

    申请日：2014-08-27

    申请人： Nittan Valve Co., Ltd.

    发明人： MIKAMI, Maiku ,  KURAHASHI, Kazunori

    IPC分类号： F16K1/36 ,  B21K1/24 ,  C22F1/00 ,  C22F1/10 ,  F01L3/20

    CPC分类号： F01L3/20 ,  B21K1/22 ,  B23P15/002 ,  C21D7/02 ,  C21D7/13 ,  C21D9/0068 ,  F01L3/02 ,  F01L2103/00 ,  F01L2103/01 ,  F01L2820/02

    摘要： [Abstract] Stiffness strength of a seat surface in a poppet valve produced by forging is made to be more uniform.
    [Problem]
    [Solution] There is provided a method for manufacturing a poppet valve 10, in which a valve head 14 having a seat surface N is provided in one end of a valve stem 12 in a longitudinal direction, by forging, wherein an intermediate valve head 14' in a intermediate valve products 10' is provided with a pressing protrusions 15 in a region serving as the seat surface N after forging, the pressing protrusions 15 having a peak 15a positioned in a normal direction K2 of the seat surface N on a basis of the seat surface N of the forged valve head 14, in a sectional view the peak 15a of the pressing protrusions 15 is positioned on a normal line K2 passing a reference point P3 set on a virtual line (line segment K) connecting a base point P1 in an inner diameter side and a base point P2 in an outer diameter side of the seat surface N, and as viewed in a center axis X1 direction of the valve stem 12, a position of the reference point P3 is set such that a relation between a length L1 from the base point P1 in the inner diameter side to the reference point P3 and a length L2 from the base point P2 in the outer diameter side to the reference point P3 meets a formula of L1/L2 ≤ 0.5.

    摘要翻译： [摘要]通过锻造制造的提升阀中的座面的刚度强度更均匀。 提供了一种用于制造提升阀10的方法，其中具有座面N的阀头14沿纵向在阀杆12的一端通过锻造设置，其中中间体 在中间阀产品10'中的阀头14'在锻造之后在用作座面N的区域中设置有按压突起15，按压突起15具有位于座面N的法线方向K2上的峰15a 在锻造阀头14的座面N的基础上，按压突起15的顶点15a位于通过设置在连接一个 内径侧的基点P1和座部表面N的外径侧的基点P2，并且在阀杆12的中心轴线X1方向观察时，将基准点P3的位置设定为 长度L1 fr之间的关系 在内径侧的基点P1与基准点P3的距离以及从外径侧的基点P2到基准点P3的长度L2满足L1 /L2≤0.5的公式。