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    COMPACT FOR PRODUCING A SINTERED ALLOY, A WEAR-RESISTANT IRON-BASED SINTERED ALLOY, AND A METHOD FOR PRODUCING THE SAME
    16.
    发明申请
    COMPACT FOR PRODUCING A SINTERED ALLOY, A WEAR-RESISTANT IRON-BASED SINTERED ALLOY, AND A METHOD FOR PRODUCING THE SAME 审中-公开
    用于生产烧结合金，耐磨铁基烧结合金的紧凑型及其生产方法

    公开(公告)号：US20160052059A1

    公开(公告)日：2016-02-25

    申请号：US14814694

    申请日：2015-07-31

    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA ,  FINE SINTER CO., LTD. ,  SANYO SPECIAL STEEL CO., LTD.

    Inventor： Nobuyuki SHINOHARA ,  Kimihiko ANDOU ,  Yoshihisa UEDA ,  Yusaku YOSHIDA ,  Masaru SUGIMOTO ,  Toshiyuki SAWADA ,  Shingo FUKUMOTO

    IPC: B22F3/12 ,  C22C38/04 ,  C22C33/02 ,  C22C38/22

    CPC classification number: B22F3/12 ,  B22F2998/10 ,  C22C33/0207 ,  C22C33/0257 ,  C22C38/04 ,  C22C38/22 ,  C22C38/36 ,  C22C38/38 ,  B22F9/082 ,  B22F3/02 ,  B22F3/1007

    Abstract: The object of the present invention is to provide a compact for producing a sintered alloy which allows a sintered alloy obtained by sintering the compact to have improved mechanical strength and wear resistance, a wear-resistant iron-based sintered alloy, and a method for producing the same. The wear-resistant iron-based sintered alloy is produced by: forming a compact for producing a sintered alloy from a powder mixture containing a hard powder, a graphite powder, and an iron-based powder by powder compacting; and sintering the compact for producing a sintered alloy while diffusing C in the graphite powder of the compact for producing a sintered alloy in hard particles that constitute the hard powder. The hard particles contain 10% to 50% by mass of Mo, 3% to 20% by mass of Cr, and 2% to 15% by mass of Mn, with the balance made up of incidental impurities and Fe, and the hard powder and the graphite powder contained in the powder mixture account for 5% to 60% by mass and 0.5% to 2.0% by mass of the total amount of the hard powder, the graphite powder, and the iron-based powder, respectively.

    Abstract translation: 本发明的目的是提供一种用于制造烧结合金的致密体，其允许通过烧结该压坯获得的烧结合金具有改善的机械强度和耐磨性，耐磨铁基烧结合金以及制造方法 一样。 耐磨铁基烧结合金通过以下方法制造：通过粉末压制从包含硬质粉末，石墨粉末和铁基粉末的粉末混合物形成用于生产烧结合金的压块; 并烧结用于制造烧结合金的压坯，同时在用于制造硬质粉末的硬质合金的烧结合金的石墨粉末中扩散C。 硬质粒子含有10质量％〜50质量％的Mo，3质量％〜20质量％的Cr，2质量％〜15质量％的Mn，余量由偶然的杂质和Fe构成，硬质粉末 并且粉末混合物中所含的石墨粉末分别占硬粉末，石墨粉末和铁基粉末的总量的5〜60质量％和0.5〜2.0质量％。

    ROTATING ASSEMBLY AND ITS MANUFACTURING METHOD
    17.
    发明申请
    ROTATING ASSEMBLY AND ITS MANUFACTURING METHOD 审中-公开
    旋转总成及其制造方法

    公开(公告)号：US20140215820A1

    公开(公告)日：2014-08-07

    申请号：US14249676

    申请日：2014-04-10

    Applicant: OTICS CORPORATION ,  FINE SINTER CO., LTD.

    Inventor： Tamotsu YAMAMOTO ,  Eiji ISOGAI ,  Kazumasa KINOSHITA ,  Kunihiro NISHIMURA ,  Hidekazu SATO

    IPC: F16H53/02

    CPC classification number: F16H53/025 ,  B23P2700/02 ,  Y10T29/49293

    Abstract: An inner hole to which a driving shaft is inserted is formed in a cam piece of a camshaft, and a plurality of grooves extending in the insertion direction of the driving shaft are formed in the inner hole. The driving shaft is inserted into the inner hole with the cam piece heated to expand the diameter of the inner hole. By reducing again the diameter of the inner hole by cooling it in this state, an outer circumferential surface of the driving shaft is pressed and raised by the inner hole and enters the groove, by which the cam piece is firmly fixed onto the driving shaft.

    Abstract translation: 在凸轮轴的凸轮件中形成有插入有驱动轴的内孔，并且在内孔中形成有沿驱动轴的插入方向延伸的多个槽。 驱动轴插入内孔，凸轮件被加热以扩大内孔的直径。 通过在该状态下通过冷却来再次减小内孔的直径，驱动轴的外周面被内孔按压并升高，并进入槽，凸轮片牢固地固定在驱动轴上。

    METHOD OF PRODUCING WEAR-RESISTANT IRON-BASED SINTERED ALLOY
    19.
    发明申请
    METHOD OF PRODUCING WEAR-RESISTANT IRON-BASED SINTERED ALLOY 审中-公开

    公开(公告)号：US20180282844A1

    公开(公告)日：2018-10-04

    申请号：US15942815

    申请日：2018-04-02

    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA ,  FINE SINTER CO., LTD.

    Inventor： Nobuyuki SHINOHARA ,  Yuki KAMO ,  Yoshihisa UEDA ,  Takanori YONEDA ,  Takeshi NAKAMURA

    IPC: C22C33/02 ,  C22C38/12 ,  C22C38/10 ,  C22C38/04 ,  C22C38/02 ,  B22F3/16 ,  B22F5/10

    Abstract: A wear-resistant iron-based sintered alloy made of a mixed powder including first hard particles, second hard particles, graphite particles, and iron particles is produced. The first hard particles are Fe—Mo—Ni—Co—Mn—Si—C alloy particles. The second hard particles are Fe—Mo—Si alloy particles. The mixed powder includes the first hard particles at 5 mass % to 50 mass %, the second hard particles at 1 mass % to 8 mass %, and the graphite particles at 0.5 mass % to 1.5 mass % when a total amount of the above particles is set as 100 mass %. In a sintering process, sintering is performed so that the hardness of the first hard particles becomes 400 to 600 Hv and the hardness of the second hard particles exceeds 600 Hv. Then, an oxidation treatment is performed so that a density difference between before and after the oxidation treatment in a sintered product becomes 0.05 g/cm3 or more.

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