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    분말 야금용 혼합분, 소결체 및 소결체의 제조 방법
    4.
    发明公开
    분말 야금용 혼합분, 소결체 및 소결체의 제조 방법 审中-公开
    用于粉末冶金烧结坯料的混合粉末和生产烧结坯料的方法

    公开(公告)号：KR20180031750A

    公开(公告)日：2018-03-28

    申请号：KR20187005232

    申请日：2016-09-16

    Applicant: JFE STEEL CORP

    Inventor： TAKASHITA TAKUYA ,  KOBAYASHI AKIO ,  NAKAMURA NAOMICHI ,  SATO ITSUYA

    IPC: B22F1/00 ,  B22F1/02 ,  C22C38/16

    CPC classification number: B22F1/00 ,  C22C38/00 ,  C22C38/16

    Abstract: 소결체에있어서의금속조직의불균일을발생시키는원인이되고, 합금분말의비용상승의최대의요인이되고있는 Ni 를일절사용하지않는성분계이면서, 합금강분의성형체를소결하고, 추가로침탄·?칭·템퍼링한부품의기계특성을 Ni 첨가품과동등이상으로할 수있는, 분말야금용혼합분을제공한다. 철기분말의입자표면에 Mo 가확산부착된부분확산합금강분과, Cu 분및 흑연분을가지며, 또한 Mo:0.2 ∼ 1.5 mass%, Cu:0.5 ∼ 4.0 mass%, C:0.1 ∼ 1.0 mass% 를함유하고, 잔부가 Fe 및불가피적불순물로이루어지는성분조성을갖고, 상기부분확산합금강분은, 평균입경이 30 ∼ 120 ㎛및 비표면적이 0.10 ㎡/g 미만이며, 직경이 50 ∼ 100 ㎛의 범위에있는입자의원형도가 0.65 이하인것으로한다.

    Abstract translation: 本发明提供一种粉末冶金用混合粉末，该粉末冶金用混合粉末具有不含Ni的成分组成，烧结体的金属组织不均匀的原因以及成本上升的主要原因， 通过烧结合金钢粉的成型体并随后对成型体进行渗碳，淬火和回火以获得成分，所述成分具有与添加了Ni的成分相同或更好的机械性能。 除Cu粉和石墨粉之外，混合粉末包含通过在铁基粉末的颗粒表面上扩散沉积Mo得到的部分扩散的合金钢粉。 该混合粉末具有含有Mo：0.2〜1.5质量％，Cu：0.5〜4.0质量％，C：0.1〜1.0质量％，剩余部分由Fe和不可避免的杂质构成的组成组成，所述部分扩散合金钢粉末具有 平均粒径为30-120微米，比表面积小于0.10平方米/克，直径为50-100微米的颗粒的圆度不超过0.65。

    ALLOY STEEL POWDER FOR POWDER METALLURGY, AND SINTERED BODY
    5.
    发明申请
    ALLOY STEEL POWDER FOR POWDER METALLURGY, AND SINTERED BODY 审中-公开
    粉末冶金用合金钢粉，烧结体

    公开(公告)号：WO2016088333A8

    公开(公告)日：2017-04-27

    申请号：PCT/JP2015005842

    申请日：2015-11-24

    Applicant: JFE STEEL CORP

    Inventor： TAKASHITA TAKUYA ,  KOBAYASHI AKIO ,  NAKAMURA NAOMICHI ,  MAETANI TOSHIO ,  SONOBE AKIO ,  SATO ITSUYA

    IPC: B22F1/00 ,  C22C33/02 ,  C22C38/00 ,  C22C38/16

    CPC classification number: B22F1/00 ,  C22C33/02 ,  C22C38/00 ,  C22C38/16

    Abstract: An Fe-Mo-Cu-C-type alloy steel powder for powder metallurgy, wherein the alloy steel powder contains 0.2-1.5 mass% of Mo, 0.5-4.0 mass% of Cu, and 0.1-1.0 mass% of C, the remainder comprising Fe and unavoidable impurities, the average particle diameter of an iron-based powder being set to 30-120 µm and the average particle diameter of a Cu powder being set to 25 µm or less, whereby an alloy steel powder for powder metallurgy is obtained whereby the mechanical characteristics of a part obtained by sintering a press-molded article of the powder and furthermore carburizing/quenching/tempering the sintered press-molded article have tensile strength, toughness, or sintered density at least equivalent to that of a Ni-added part while not including Ni as a component.

    Abstract translation: 一种粉末冶金用Fe-Mo-Cu-C系合金钢粉，其特征在于，合金钢粉含有Mo：0.2〜1.5质量％，Cu：0.5〜4.0质量％，C：0.1〜1.0质量％ 含有Fe和不可避免的杂质，将铁基粉末的平均粒径设定为30〜120μm，将Cu粉末的平均粒径设定为25μm以下，从而得到粉末冶金用合金钢粉末 由此通过烧结粉末的压制成型制品并且进一步对烧结的压制成型制品进行渗碳/淬火/回火而获得的部件的机械特性具有至少等同于添加Ni的拉伸强度，韧性或烧结密度 而不包括镍作为一个组成部分。

    METHOD FOR MANUFACTURING ATOMIZED METAL POWDER
    7.
    发明专利
    METHOD FOR MANUFACTURING ATOMIZED METAL POWDER 未知

    公开(公告)号：CA3084963C

    公开(公告)日：2022-05-03

    申请号：CA3084963

    申请日：2018-12-05

    Applicant: JFE STEEL CORP

    Inventor： NAKASEKO MAKOTO ,  NAKAMURA NAOMICHI ,  KOBAYASHI AKIO ,  TAKASHITA TAKUYA

    IPC: B22F9/08 ,  C22C38/00

    Abstract: [Problem] To provide a method for producing an atomized metal powder with a high rate of amorphization by water atomization. [Solution] A method for producing an atomized metal powder with an amorphization rate of at least 90% by jetting high pressure water that collides with molten metal that is falling in the vertical direction to fragment the molten metal and form metal powder and cooling said metal powder, wherein: the collision pressure when the high pressure water collides with the molten metal is set to be at least 20 MPa; and the temperature of the molten metal and/or the temperature of the high pressure water is adjusted so that the high pressure water is in a subcritical state or a supercritical state at the surface of collision with the molten metal.

    IRON POWDER FOR DUST CORES
    10.
    发明专利
    IRON POWDER FOR DUST CORES 未知

    公开(公告)号：CA2891206A1

    公开(公告)日：2014-06-26

    申请号：CA2891206

    申请日：2013-12-02

    Applicant: JFE STEEL CORP

    Inventor： TAKASHITA TAKUYA ,  NAKAMURA NAOMICHI

    IPC: B22F1/00 ,  C22C38/00 ,  H01F1/14 ,  H01F1/20 ,  H01F27/24

    Abstract: According to the present invention, an iron powder for dust cores, which has excellent compressibility and low iron loss after molding, can be obtained by setting the Si content thereof to 0.01 mass% or less, the apparent density thereof to 3.8 g/cm3 or more, the ratio of iron particles having a diameter of 45 µm or less to 10 mass% or less, the ratio of iron particles having a diameter of more than 180 µm but 250 µm or less to less than 30 mass%, the ratio of iron particles having a diameter of more than 250 µm to 10 mass% or less, and the Vickers hardness (test force: 0.245 N) in a particle cross-section to 80Hv or less.

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