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    Alloy steel powder for powder metallurgy
    1.
    发明申请
    Alloy steel powder for powder metallurgy 有权
    粉末冶金用合金钢粉末

    公开(公告)号：US20050039576A1

    公开(公告)日：2005-02-24

    申请号：US10918887

    申请日：2004-08-16

    申请人： Shigeru Unami ,  Naomichi Nakamura ,  Satoshi Uenosono

    发明人： Shigeru Unami ,  Naomichi Nakamura ,  Satoshi Uenosono

    IPC分类号： C22C33/02 ,  C22C1/04

    CPC分类号： C22C33/0207 ,  B22F2999/00 ,  B22F1/0003 ,  B22F1/0096

    摘要： An alloy steel powder for powder metallurgy includes an iron-based powder containing about 0.5 mass percent or less of Mn as a prealloyed element and 0.2 to about 1.5 mass percent of Mo as a prealloyed element; and a Mo-containing alloy powder bonded on the surface of the iron-based powder by diffusion bonding. In the alloy steel powder for powder metallurgy, a Mo average content [MO]T (mass percent) satisfies formula 0.8≧[M]T—[Mo]P≧0.05, wherein the content [Mo]P is the above prealloyed Mo content (mass percent) in the iron-based powder.

    摘要翻译： 用于粉末冶金的合金钢粉末包括含有作为预合金元素的Mn的约0.5质量％或更少的铁基粉末和作为预合金元素的0.2至约1.5质量％的Mo; 和通过扩散接合结合在铁基粉末的表面上的含Mo合金粉末。 在用于粉末冶金的合金钢粉末中，Mo平均含量[MO] T（质量百分比）满足公式0.8> = [M] T [Mo] P> = 0.05，其中[Mo] P为上述预合金 铁基粉末中的Mo含量（质量百分比）。

    Method For Manufacturing High-Density Iron-Based Compacted Body and High-Density Iron-Based Sintered Body
    4.
    发明申请
    Method For Manufacturing High-Density Iron-Based Compacted Body and High-Density Iron-Based Sintered Body 审中-公开
    高密度铁基压实体和高密度铁基烧结体的制造方法

    公开(公告)号：US20080202651A1

    公开(公告)日：2008-08-28

    申请号：US11664138

    申请日：2005-11-24

    申请人： Satoshi Uenosono ,  Naomichi Nakamura

    发明人： Satoshi Uenosono ,  Naomichi Nakamura

    IPC分类号： C21D1/26 ,  B22F3/12

    CPC分类号： B22F3/16 ,  B22F2998/10 ,  C22C38/04 ,  C22C38/42 ,  C22C38/44 ,  C22C38/46 ,  B22F3/02 ,  B22F3/10

    摘要： An iron-based compact having a high density and also an iron-based sintered body having a high strength and a high density are manufactured with a high productivity by pre-compacting an iron-based mixed powder prepared by mixing an iron-based metal powder and a graphite powder; pre-sintering the resulting pre-compacted iron-based mixed powder at a temperature higher than 1000° C. but not higher than 1300° C. to produce a sintered iron-based powder preform containing C: 0.10 to 0.50 mass %, O: 0.3 mass % or less, and N: 0.010 mass % or less and having a density of 7.2 Mg/m3 or more; and subjecting the sintered iron-based powder preform to high-velocity compaction at a compaction energy density of 1.8 MJ/m2 or more (1.4 MJ/m2 or more for a sintered pure-iron based powder preform).

    摘要翻译： 通过预先压制通过混合铁基金属粉末制备的铁基混合粉末，以高生产率制造具有高密度的铁基压块和具有高强度和高密度的铁基烧结体 和石墨粉末; 在高于1000℃但不高于1300℃的温度下预烧结所得的预先压制的铁基混合粉末，以制备C：0.10至0.50质量％的烧结铁基粉末预制件，O： 0.3质量％以下，N：0.010质量％以下，密度为7.2Mg / m 3以上; 并对烧结的铁基粉末预制件以1.8MJ / m 2以上的压缩能量密度（1.4MJ / m 2以上）进行高速压实， 烧结纯铁粉末预制件）。

    Highly compressible iron powder
    6.
    发明授权
    Highly compressible iron powder 有权
    高度可压缩的铁粉

    公开(公告)号：US06638335B2

    公开(公告)日：2003-10-28

    申请号：US10123343

    申请日：2002-04-16

    申请人： Yukiko Ozaki ,  Masateru Ueta ,  Naomichi Nakamura

    发明人： Yukiko Ozaki ,  Masateru Ueta ,  Naomichi Nakamura

    IPC分类号： B22F100

    CPC分类号： B22F1/0014 ,  C22C38/004

    摘要： A highly compressible iron powder for powder metallurgy has an optimized particle size distribution. The Vickers microhardness of the particles that do not pass through the sieve having the nominal opening of 150 &mgr;m is controlled to be at most about 110. The iron powder is suitable for production of magnetic parts having high magnetism and mechanical parts having high mechanical strength.

    摘要翻译： 用于粉末冶金的高度可压缩的铁粉具有优化的粒度分布。 不通过具有150μm标称开口的筛子的颗粒的维氏显微硬度被控制在至多约110.铁粉适用于生产具有高磁性的磁性部件和具有高机械强度的机械部件。

    Iron-based sintered powder metal body, manufacturing method thereof and manufacturing method of iron-based sintered component with high strength and high density
    7.
    发明授权
    Iron-based sintered powder metal body, manufacturing method thereof and manufacturing method of iron-based sintered component with high strength and high density 有权
    铁基烧结粉末金属体及其制造方法以及高强度，高密度的铁基烧结体的制造方法

    公开(公告)号：US06514307B2

    公开(公告)日：2003-02-04

    申请号：US09934428

    申请日：2001-08-21

    申请人： Naomichi Nakamura ,  Satoshi Uenosono ,  Shigeru Unami ,  Masashi Fujinaga ,  Takashi Yoshimura ,  Mitsumasa Iijima ,  Shin Koizumi ,  Hiroyuki Anma ,  Yasuo Hatai

    发明人： Naomichi Nakamura ,  Satoshi Uenosono ,  Shigeru Unami ,  Masashi Fujinaga ,  Takashi Yoshimura ,  Mitsumasa Iijima ,  Shin Koizumi ,  Hiroyuki Anma ,  Yasuo Hatai

    IPC分类号： C22C3302

    CPC分类号： C22C33/0264 ,  B22F3/1007 ,  B22F2998/10 ,  B22F2999/00 ,  C22C33/02 ,  B22F3/02 ,  B22F3/10 ,  C22C33/0207 ,  B22F1/0096

    摘要： An sintered iron-based powder metal body with outstandingly lower re-compacting load and having a high density and a method of manufacturing an iron-based sintered component with fewer pores of a sharp shape and having high strength and high density, the method comprising mixing, an iron-based metal powder containing at most about 0.05% of carbon, at most about 0.3% of oxygen, at most about 0.010% of nitrogen, with at least about 0.03% and at most about 0.5% of graphite powder and a lubricant, preliminarily compacting the mixture into a preform, the density of which is about 7.3 Mg/m3 or more, and preliminarily sintering the preform in a non-oxidizing atmosphere in which a partial pressure of nitrogen is about 30 kPa or less at a temperature of about 1000° C. or higher and about 1300° C. or lower, thereby forming a sintered iron-based powder metal body with outstandingly lower re-compacting load and having high deformability, the density of which is about 7.3 Mg/m3 or more and which contains at least about 0.10% and at most about 0.50 of carbon, at most about 0.010% of oxygen and at most about 0.010% of nitrogen, and which comprises at most about 0.02% of free carbon, and, further applying re-compaction and re-sintering and/or heat treatment thereby forming a sintered component, as well as the method alternatively comprising applying preliminary sintering in an atmosphere with no restriction of the nitrogen partial pressure and then annealing instead of the sintering step, thereby obtaining a sintered iron-based powder metal body with the nitrogen content of at most about 0.010%.

    摘要翻译： 一种烧结铁基粉末金属体，具有显着降低的再压实载荷并具有高密度，并且制造具有较少的尖锐形状的孔并具有高强度和高密度的铁基烧结组分的方法，该方法包括混合 ，含有最多约0.05％的碳，至多约0.3％的氧，至多约0.010％的氮，至少约0.03％和至多约0.5％的石墨粉末和润滑剂的铁基金属粉末， 将混合物预先压实成预制件，其密度为约7.3Mg / m 3以上，并且在约10分钟的温度下在氮气分压为约30kPa以下的非氧化性气氛中预先烧结预成型体 1000℃以上约1300℃以下，从而形成烧结的铁基粉末金属体，具有显着降低的再压缩载荷，并具有高变形能力，其密度为约7.3Mg / m 3以上， 其中 至少约0.10％，至多约0.50碳，至多约0.010％的氧和至多约0.010％的氮，并且其包含至多约0.02％的游离碳，并且进一步应用再压实和 再烧结和/或热处理，从而形成烧结组分，以及所述方法或者包括在不限制氮分压的气氛中进行初步烧结，然后退火而不是烧结步骤，由此获得烧结的铁 - 含氮量最多为0.010％的粉末金属体。

    Alloy steel powder for powder metallurgy
    8.
    发明授权
    Alloy steel powder for powder metallurgy 有权
    粉末冶金用合金钢粉末

    公开(公告)号：US07347884B2

    公开(公告)日：2008-03-25

    申请号：US10918887

    申请日：2004-08-16

    申请人： Shigeru Unami ,  Naomichi Nakamura ,  Satoshi Uenosono

    发明人： Shigeru Unami ,  Naomichi Nakamura ,  Satoshi Uenosono

    IPC分类号： B22F3/00 ,  B22F1/00

    CPC分类号： C22C33/0207 ,  B22F2999/00 ,  B22F1/0003 ,  B22F1/0096

    摘要： An alloy steel powder for powder metallurgy includes an iron-based powder containing about 0.5 mass percent or less of Mn as a prealloyed element and 0.2 to about 1.5 mass percent of Mo as a prealloyed element; and a Mo-containing alloy powder bonded on the surface of the iron-based powder by diffusion bonding. In the alloy steel powder for powder metallurgy, a Mo average content [Mo]T (mass percent) satisfies formula 0.8≧[Mo]T−[Mo]P≧0.05, wherein the content [Mo]P is the above prealloyed Mo content (mass percent) in the iron-based powder.

    摘要翻译： 用于粉末冶金的合金钢粉末包括含有作为预合金元素的Mn的约0.5质量％或更少的铁基粉末和作为预合金元素的0.2至约1.5质量％的Mo; 和通过扩散接合结合在铁基粉末的表面上的含Mo合金粉末。 在用于粉末冶金的合金钢粉末中，Mo平均含量[Mo]≤T（质量百分比）满足公式0.8> = [Mo] T P = 0.05，其中，[Mo] P

    是铁基粉末中上述预合金化的Mo含量（质量％）。

    Alloyed steel powder for powder metallurgy
    9.
    发明授权
    Alloyed steel powder for powder metallurgy 有权
    粉末冶金用合金钢粉末

    公开(公告)号：US06758882B2

    公开(公告)日：2004-07-06

    申请号：US10255280

    申请日：2002-09-26

    申请人： Naomichi Nakamura ,  Satoshi Uenosono ,  Shigeru Unami ,  Masashi Fujinaga

    发明人： Naomichi Nakamura ,  Satoshi Uenosono ,  Shigeru Unami ,  Masashi Fujinaga

    IPC分类号： B22F100

    CPC分类号： C22C33/0207 ,  B22F2999/00 ,  B22F1/0003 ,  B22F1/0096

    摘要： A Mo source powder is added to and mixed with an iron-based powder containing 1.0% by mass or less of prealloyed Mn to yield a powder mixture containing 0.2 to 10.0% by mass of Mo, the resulting powder mixture is subjected to heat treatment in a reducing atmosphere to thereby yield an alloyed steel powder containing Mo as a powder partially diffused and bonded to a surface of the iron-based powder particles. The prepared alloyed steel powder for powder metallurgy has satisfactory compactability. The use of this alloyed steel powder can produce a sintered powder metal body (an intermediate material after compaction and preliminary sintering in re-compaction of sintered powder materials process) for highly strong sintered member.

    摘要翻译： 向含有1.0质量％以下的预合金Mn的铁基粉末中添加Mo源粉末，得到含有0.2〜10.0质量％的Mo的粉末混合物，将得到的粉末混合物进行热处理 还原气氛，从而得到含有Mo的合金化钢粉，其部分扩散并结合到铁基粉末颗粒的表面。 制备的粉末冶金合金钢粉末具有令人满意的压实性。 使用该合金钢粉末可以制造高强度烧结体的烧结粉末金属体（压实后的中间材料，烧结粉末材料的再压制的预烧结）。