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    • 13. 发明公开
    • FORGING TOOL
    • EP3778064A1
    • 2021-02-17
    • EP19774396.6
    • 2019-03-28
    • NGK Insulators, Ltd.Miura, Hiromi
    • MURAMATSU, NaokuniKAWAMOTO, TadahiroMIURA, Hiromi
    • B21J1/02B21J13/02
    • A forging tool 10 is to forge a workpiece W in a cuboidal forging space S by using first to sixth wall surfaces 21 to 26. The forging tool 10 includes a first die 30, a second die 40, and a third die 60. The first die 30 forms the first wall surface 21 and the second wall surface 22 adjacent to the first wall surface 21. The second die 40 forms the third wall surface 23 and the fourth wall surface 24 adjacent to the third wall surface 23. The third die 60 forms the sixth wall surface 26 in a region surrounded by a contact surface 61 when bottom surfaces 32, 42 of the first die 30 and the second die 40 are brought into contact with the contact surface 61. The first die 30 forms a triangular region 25a two sides of which are a line of intersection of the fifth wall surface 25 with the first wall surface 21 and a line of intersection of the fifth wall surface 25 with the second wall surface 22, the second die 49 forms a triangular region 25b two sides of which are a line of intersection of the fifth wall surface 25 with the third wall surface 23 and a line of intersection of the fifth wall surface 25 with the fourth wall surface 24, and the workpiece W is pressed between the fifth wall surface 25 and the sixth wall surface 26.
    • 15. 发明公开
    • VOLTAGE NON-LINEAR RESISTANCE ELEMENT
    • 电压非线性电阻元件
    • EP2927913A1
    • 2015-10-07
    • EP13858795.1
    • 2013-10-24
    • NGK Insulators, Ltd.
    • MURAMATSU, Naokuni
    • H01C7/10B22F1/00B22F1/02B22F3/14
    • H01C7/10B22F3/105B22F2003/1051B22F2999/00C22C1/0425C22C1/0491C22C9/00H01C7/108H01C17/00B22F2202/13
    • A voltage nonlinear resistive element 20 of the present invention includes a voltage nonlinear resistive material 30 composed of a copper alloy which has a two-phase structure containing a Cu phase 31 and a Cu-Zr compound phase 32 not containing a eutectic phase, and electrodes 21 and 22. The voltage nonlinear resistive material 30 may have a mosaic-shaped structure in which the Cu phase 31 and the Cu-Zr compound phase 32 are dispersed as crystals with a size of 10 µm or less in a cross-sectional view. The Cu-Zr compound phase 32 may be at least one of Cu 5 Zr, Cu 9 Zr 2 , and Cu 8 Zr 3 . Also, the voltage nonlinear resistive material 30 may be formed by spark plasma sintering of a Cu-Zr binary alloy powder. The voltage nonlinear resistive material 30 may contain 0.2 at% or more and 18.0 at% or less of Zr.
    • 本发明的电压非线性电阻元件20包括由铜合金构成的电压非线性电阻材料30,该铜合金具有包含Cu相31和不包含共晶相的Cu-Zr化合物相32的两相结构,并且电极 电压非线性电阻材料30可以具有马赛克形结构,其中Cu相31和Cu-Zr化合物相32在截面图中以10μm或更小的尺寸分散成晶体。 Cu-Zr化合物相32可以是Cu 5 Zr,Cu 9 Zr 2和Cu 8 Zr 3中的至少一种。 而且,电压非线性电阻材料30可以通过Cu-Zr二元合金粉末的放电等离子体烧结来形成。 电压非线性电阻材料30可以包含0.2原子%以上且18.0原子%以下的Zr。
    • 18. 发明公开
    • FORGING METHOD AND MOLD FOR FORGING
    • SCHMIEDEVERFAHREN UND FORUM ZUM SCHMIEDEN
    • EP2832470A1
    • 2015-02-04
    • EP13768359.5
    • 2013-03-14
    • NGK Insulators, Ltd.The University of Electro-Communications
    • MIURA, HiromiMURAMATSU, Naokuni
    • B21J5/02B21J5/00B21J13/02B21J13/14C22F1/08C22C9/00C22C9/06C22C38/00C22C38/18
    • A forging method according to the present invention is characterized by including the steps of placing a work W having a first shape which is a rectangular hexahedron in a work space 45 of a forging die 20 which has a rectangular opening, which is formed by rectangular plane wall portions, and which is provided with the work space 45 to hold the work in a placement step and applying a plastic strain to the work W by deforming the placed work W into a second shape which is a rectangular hexahedron in a working step, wherein the placement step and the working step are performed at least two times. For example, the work is press-deformed in the work space of the forging die and, thereby, the shape stability can be further ensured. Also, the forging die 20 has a structure in which a plurality of die parts are fitted into the inner periphery of the outer die, so that, for example, the stress applied to the inner die 50 during pressurization of the work W can be dispersed to the outer peripheral side more evenly by the plurality of die parts and breakage of the die and the like can be further suppressed.
    • 根据本发明的锻造方法的特征在于包括以下步骤:将具有矩形六面体的第一形状的工件W放置在具有矩形开口的锻造模具20的工作空间45中,该锻造模具由矩形平面 壁部,并且设置有工作空间45,用于将工件保持在放置步骤中,并且在工作步骤中通过使放置的工件W变形为矩形六面体的第二形状而向工件W施加塑性应变,其中 放置步骤和工作步骤至少进行两次。 例如,在锻造模具的工作空间中进行压制变形,能够进一步确保形状的稳定性。 此外,锻造模具20具有将多个模具部嵌入外模的内周的结构,例如,可以分散在加工工件W期间施加到内模50的应力 可以进一步抑制多个模具部件更均匀地向外周侧的挤压,并且能够进一步抑制模具的断裂等。
    • 19. 发明公开
    • COPPER ALLOY WIRE AND PROCESS FOR PRODUCING SAME
    • KUPFERLEGIERUNGSDRAHT UND HERSTELLUNGSVERFAHRENDAFÜR
    • EP2479297A1
    • 2012-07-25
    • EP10815488.1
    • 2010-09-13
    • NGK Insulators, Ltd.Tohoku University
    • MURAMATSU, NaokuniKIMURA, HisamichiINOUE, Akihisa
    • C22C9/00B22D11/059B22D21/00C22F1/08H01B1/02H01B5/02H01B13/00B22D11/00C22F1/00
    • H01B1/026C22C1/02C22C9/00C22F1/08
    • The zirconium content of the alloy composition of a copper alloy wire 10 of the present invention is 3.0 to 7.0 atomic percent, and the copper alloy wire 10 includes copper matrix phases 30 and composite phases 20 composed of copper-zirconium compound phases 22 and copper phases 21. As shown in Fig. 1 , the copper matrix phases 30 and the composite phases 20 form a matrix phase-composite phase fibrous structure and are arranged alternately parallel to an axial direction as viewed in a cross-section parallel to the axial direction and including a central axis. In addition, the copper-zirconium compound phases 22 and the copper phases 21 in the composite phases 20 form a composite phase inner fibrous structure and are arranged alternately parallel to the axial direction at a phase pitch of 50 nm or less as viewed in the above cross-section. This double fibrous structure presumably makes the copper alloy wire 10 densely fibrous to provide a strengthening mechanism similar to the rule of mixture for fiber-reinforced composite materials.
    • 本发明的铜合金线10的合金组成的锆含量为3.0〜7.0原子%,铜合金线10包含铜基体相30和由铜 - 锆化合物相22和铜相构成的复合相20 如图21所示。 如图1所示,铜基体相30和复合相20形成基体相复合相纤维结构,并且在与轴向平行的截面中观察并且包括中心轴线,交替平行于轴向布置。 此外,复合相20中的铜 - 锆化合物相22和铜相21形成复合相内纤维结构,并且如上所述以相对间距50nm或更小的方式与轴向交替平行布置 横截面。 这种双重纤维结构可能使铜合金线10密集纤维化,以提供类似于纤维增强复合材料的混合规则的强化机理。