利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

24 条记录 (耗时 0.025 秒)

    Process for producing a sintered body
    1.
    发明授权
    Process for producing a sintered body 失效
    烧结体的制造方法

    公开(公告)号：US4996022A

    公开(公告)日：1991-02-26

    申请号：US550972

    申请日：1990-07-10

    申请人： Norikazu Shindo ,  Tomoyuki Sekine ,  Yoshikatsu Nakamura ,  Takashi Kawamoto

    发明人： Norikazu Shindo ,  Tomoyuki Sekine ,  Yoshikatsu Nakamura ,  Takashi Kawamoto

    IPC分类号： B22F3/10 ,  B22F3/22

    CPC分类号： B22F3/225 ,  B22F3/1021 ,  B22F3/22 ,  B22F2998/00

    摘要： A sintered body is produced by a process comprising the steps of mixing one or more metal powder particles with an organic binder, injection-molding the mixture to form a green body of a predetermined shape, removing the binder from the green body to form a porous body substantially made of the metal powder, and heating the porous body to a sintering temperature and holding it at that temperature to produce a sintered body, in which process the binder is removed through the sequence of the following steps: preheating the green body in an inert gas atmosphere in a temperature range that creates open pores in it; placing the green body, in which open pores have started to form, in a hydrogen gas atmosphere optionally mixed with an inert gas; holding the green body in a temperature range where the metal powder is not carburized and where the open pores will be maintained, so that the greater part of the binder is removed to form a porous body that is substantially made of the metal powder alone; and further holding said porous body at said heating temperature for a sufficient period of time to vaporize the carbon in the small amount of residual binder in the porous body through reaction with hydrogen.

    摘要翻译： 通过包括以下步骤的方法制造烧结体，所述方法包括将一种或多种金属粉末颗粒与有机粘合剂混合，将混合物注射成型以形成预定形状的生坯，从生坯中除去粘合剂以形成多孔 基体由金属粉末制成，并将多孔体加热至烧结温度并在该温度下保持，以制备烧结体，其中通过以下步骤的顺序将粘合剂除去：在其中预热生坯体 在其中产生开孔的温度范围内的惰性气体气氛; 在可选择地与惰性气体混合的氢气气氛中放置开始形成开放孔的生坯; 将生坯保持在金属粉末未渗碳的温度范围内并保持开孔的位置，从而除去大部分粘合剂以形成基本上仅由金属粉末制成的多孔体; 并且在所述加热温度下进一步将所述多孔体保持足够的时间以通过与氢气反应来蒸发多孔体中少量残留粘合剂中的碳。

    Abrasion resistant sintered alloy for internal combustion engines
    4.
    发明授权
    Abrasion resistant sintered alloy for internal combustion engines 失效
    内燃机耐磨烧结合金

    公开(公告)号：US4345942A

    公开(公告)日：1982-08-24

    申请号：US143256

    申请日：1980-04-24

    申请人： Kentaro Takahashi ,  Yoshikatsu Nakamura ,  Masajiro Takeshita

    发明人： Kentaro Takahashi ,  Yoshikatsu Nakamura ,  Masajiro Takeshita

    IPC分类号： B22F3/11 ,  B22F5/00 ,  C22C33/02 ,  C22C38/00 ,  B22F3/12

    CPC分类号： C22C33/0257 ,  B22F3/1103

    摘要： An abrasion resistered sintered alloy for use in internal combustion engines which comprises 0.5 to 4.0% by weight of carbon, 1.5 to 16.0% by weight of Nb, 0.1 to 4.0% by weight of Mo, 0.1 to 1.0% by weight of Ni and 0.1 to 5.0% by weight of P which permits liquid-phase sintering at temperatures not higher than 1,250.degree. C., and have 0.2 to 10% by volume of sintering pores at least 40% of which consist of pores having a pore size of not larger than 150 .mu.m is disclosed.

    摘要翻译： 一种用于内燃机的耐磨烧结合金，其包含0.5〜4.0重量％的碳，1.5〜16.0重量％的Nb，0.1〜4.0重量％的Mo，0.1〜1.0重量％的Ni和0.1 至5.0重量％的P，其允许在不高于1250℃的温度下进行液相烧结，并且具有0.2至10体积％的烧结孔，其至少40％由孔径不大于的孔组成 公开了150多亩。

    Synchronizer ring
    5.
    发明授权
    Synchronizer ring 失效
    同步环

    公开(公告)号：US06261389B1

    公开(公告)日：2001-07-17

    申请号：US09069968

    申请日：1998-04-30

    申请人： Yoshikatsu Nakamura ,  Tetsuo Masuyama ,  Takao Omiya ,  Hiroshi Takiguchi

    发明人： Yoshikatsu Nakamura ,  Tetsuo Masuyama ,  Takao Omiya ,  Hiroshi Takiguchi

    IPC分类号： C22C3816

    CPC分类号： C22C33/0257 ,  B22F2003/242 ,  B22F2998/10 ,  F16H57/0478 ,  B22F9/082 ,  B22F1/0003

    摘要： The present invention provides a synchronizer ring excellent in strength and abrasion resisting property, used in a speed change gear. This synchronizer ring according to the invention is consisted of, by weight, C:0.2˜1.0%, Ni:1.0˜6.0%, Mo:0.6˜3.0%, Cu:1.0˜4.0% and the reminder Fe and inevitable impurities, and is made of Fe sintered alloy of which base composition comprises of mainly martonsite and bainite. And the base composition is preferably consisted of, by volume, martensite: 57˜80%, bainite: 17˜40%, austenite: 8% or less.

    摘要翻译： 本发明提供了一种用于变速齿轮的强度和耐磨性优异的同步器环。 根据本发明的同步环由C：0.2〜1.0％，Ni：1.0〜6.0％，Mo：0.6〜3.0％，Cu：1.0〜4.0％组成，提示Fe和不可避免的杂质， 由Fe烧结合金制成，其基本组成主要由马氏体和贝氏体组成。 基体组成优选由马氏体组成：57〜80％，贝氏体：17〜40％，奥氏体：8％以下。

    Ionosonde
    8.
    发明授权
    Ionosonde 失效

    公开(公告)号：US06822574B2

    公开(公告)日：2004-11-23

    申请号：US10274912

    申请日：2002-10-22

    申请人： Yoshikatsu Nakamura

    发明人： Yoshikatsu Nakamura

    IPC分类号： G01W100

    CPC分类号： G01S13/951 ,  G01S3/12 ,  Y02A90/18

    摘要： An ionosonde includes a signal-transmitting section for transmitting to an ionosphere pulsed radio waves whose frequency is scanned; a signal-receiving section that includes a loop antenna system for measuring intensity of a magnetic field Hz of pulsed radio waves reflected by the ionosphere, a first dipole antenna system for measuring intensity of an electric field Ex orthogonal to the magnetic field Hz and a second dipole antenna system for measuring intensity of an electric field Ey orthogonal to the magnetic field Hz and electric field Ex; and a signal-processing section using values obtained at the signal-receiving section to obtain a cosine (nx, ny) of an arrival direction {right arrow over (n)} of the reflected radio waves in accordance with relationship nx=(HzNx*−ExHz*)Z/(ExEy*−EyEx*) and relationship ny=(HzEy*−EyHz*)Z/(ExEy*−EyEx*), wherein Z stands for intrinsic impedance.

    摘要翻译： 电离探空器包括用于传输到电离层的信号传输部分脉冲无线电波，其频率被扫描; 信号接收部分，包括用于测量由电离层反射的脉冲无线电波的磁场Hz的强度的环形天线系统，用于测量与磁场Hz正交的电场强度的第一偶极子天线系统，第二偶极子天线系统 用于测量与磁场Hz和电场Ex正交的电场强度Ey的偶极子天线系统; 以及信号处理部分，使用在信号接收部分获得的值来获得到达方向的余弦（nx，ny）{向右箭头（根据关系nx =（HzNx * -ExHz）的反射无线电波的n *）Z /（ExEy * -EyEx *）和关系ny =（HzEy * -EyHz *）Z /（ExEy * -EyEx *），其中Z表示本征阻抗。

    Synchronizer ring
    10.
    发明授权
    Synchronizer ring 失效
    同步环

    公开(公告)号：US5900559A

    公开(公告)日：1999-05-04

    申请号：US919817

    申请日：1997-08-29

    申请人： Yoshikatsu Nakamura ,  Tetsuo Masuyama

    发明人： Yoshikatsu Nakamura ,  Tetsuo Masuyama

    IPC分类号： F16D23/06 ,  B22F3/24 ,  B22F5/00 ,  B22F5/08 ,  C23C8/14 ,  C23C8/16 ,  F16D23/02 ,  F16D69/02 ,  C22C29/00

    CPC分类号： C23C8/16 ,  B22F3/24 ,  B22F5/08 ,  F16D23/025 ,  F16D69/027 ,  B22F2003/241

    摘要： In an aspect of the present invention, a synchronizer ring, made of Fe-based sintered alloy, having an internal circumferential surface 101, is provided, the internal circumferential surface 101 being adapted to detachably engage in synchronized sliding with a rotating counterpart member thereof. At least the internal circumferential surface 101 is applied with aqueous vapor treatment to form iron oxide film thereon. In another aspect of the present invention, the iron oxide film has surface roughness not less than 20 .mu.mRz but not more than 55 .mu.mRz. In a further aspect of the present invention, the iron oxide film has a surface roughness not less than 25 .mu.mRz but not more than 35 .mu.mRz. In another aspect of the present invention, the iron oxide film has a thickness not less than 0.05 .mu.m but not more than 5 .mu.m. In a further aspect of the present invention, the major component of the iron oxide film is Fe.sub.3 O.sub.4. In a still further aspect of the present invention, at least the internal circumferential surface is applied with blasting treatment in addition to, and in combination with, the aqueous vapor treatment to form iron oxide film thereon.

    摘要翻译： 在本发明的一个方面中，提供了一种具有内周面101的由Fe基烧结合金制成的同步环，内周面101适于与其旋转的配对构件可滑动地同步滑动。 至少内周面101被施加水蒸汽处理以在其上形成氧化铁膜。 在本发明的另一方面，氧化铁膜的表面粗糙度不小于20微米，但不大于55微米。 在本发明的另一方面，氧化铁膜的表面粗糙度不小于25微米，但不大于35微米。 在本发明的另一方面，氧化铁膜的厚度不小于0.05μm，但不大于5μm。 在本发明的另一方面，氧化铁膜的主要成分是Fe 3 O 4。 在本发明的又一方面中，至少内周面除了水蒸气处理之外还与其组合地进行喷砂处理以在其上形成氧化铁膜。