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    • 5. 发明授权
    • Alloy steel powders, sintered bodies and method
    • 合金钢粉末,烧结体及方法
    • US5605559A
    • 1997-02-25
    • US392120
    • 1995-02-22
    • Shigeru UnamiSatoshi Uenosono
    • Shigeru UnamiSatoshi Uenosono
    • C22C33/02C22C38/22C22C38/24C22C38/46
    • C22C33/0264C22C33/02C22C38/22C22C38/24B22F2009/0824B22F2998/10B22F2999/00
    • Alloy steel powders capable of obtaining high strength in a sintered state and having excellent compacting compressibility and methods of manufacturing a sintered body. The alloy steel powder comprises, by wt %, about 0.5-2% of Cr, not greater than about 0.08% of Mn, about 0.1-0.6% of Mo, about 0.05-0.5% of V, not greater than about 0.015 of S, not greater than about 0.2% of O, and the balance being Fe and incidental impurities. The alloy steel powder is compacted and sintered at a temperature of about 1100.degree.-1300.degree. C. and then cooled at a cooling rate no higher than about 1.degree. C./s in a temperature range of from about 800.degree. C. to 400.degree. C. The alloy steel powder can contain Nb and/or Ti and one or more of Co, W and B. Additionally, Ni powder and/or Cu powder may be adhered and dispersed onto the surface of the alloy steel powder.
    • 能够在烧结状态下获得高强度并具有优异的压实压缩性的合金钢粉末和制造烧结体的方法。 合金钢粉末以重量%计含有约0.5-2%的Cr,不大于约0.08%的Mn,约0.1-0.6%的Mo,约0.05-0.5%的V,不大于约0.015的S ,不大于约0.2%的O,余量为Fe和杂质。 合金钢粉末在约1100〜-1300℃的温度下压实烧结,然后在约800℃至400℃的温度范围内以不高于约1℃/ s的冷却速率冷却 ℃。合金钢粉末可以含有Nb和/或Ti以及一种或多种Co,W和B.另外,Ni粉末和/或Cu粉末可以粘附并分散在合金钢粉末的表面上。
    • 7. 发明授权
    • Iron-based mixed powder for powder metallurgy and sintered body
    • 用于粉末冶金和烧结体的铁基混合粉末
    • US07300490B2
    • 2007-11-27
    • US11230714
    • 2005-09-20
    • Yukiko OzakiHiroshi SugiharaSatoshi Uenosono
    • Yukiko OzakiHiroshi SugiharaSatoshi Uenosono
    • B22F1/00
    • C22C33/0228B22F1/0059
    • An iron-based mixed powder for powder metallurgy having improved machinability, without degrading the mechanical property of a sintered body made by compacting the iron-based mixed power. The iron-based mixed powder comprises a mixture of an iron-based powder, a powder for an alloy, a powder for machinability improvement, and a lubricant. The powder for machinability improvement comprises a manganese sulfide powder, and at least one selected from the group consisting of a calcium phosphate powder and a hydroxy apatite powder. Alternatively the powder for machinability improvement has an average particle diameter of 1 to 60 micrometers and comprise manganese sulfide powder and calcium fluoride powder.
    • 一种用于粉末冶金的铁基混合粉末,其具有改善的机械加工性,而不降低通过压制铁基混合动力制成的烧结体的机械性能。 铁基混合粉末包括铁基粉末,合金粉末,用于机械加工性改进的粉末和润滑剂的混合物。 用于机械加工性改善的粉末包括硫化锰粉末和选自磷酸钙粉末和羟基磷灰石粉末中的至少一种。 或者,用于机械加工性改进的粉末具有1至60微米的平均粒径,并且包含硫化锰粉末和氟化钙粉末。
    • 9. 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
    • 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
    • US06514307B2
    • 2003-02-04
    • US09934428
    • 2001-08-21
    • Naomichi NakamuraSatoshi UenosonoShigeru UnamiMasashi FujinagaTakashi YoshimuraMitsumasa IijimaShin KoizumiHiroyuki AnmaYasuo Hatai
    • Naomichi NakamuraSatoshi UenosonoShigeru UnamiMasashi FujinagaTakashi YoshimuraMitsumasa IijimaShin KoizumiHiroyuki AnmaYasuo Hatai
    • C22C3302
    • C22C33/0264B22F3/1007B22F2998/10B22F2999/00C22C33/02B22F3/02B22F3/10C22C33/0207B22F1/0096
    • 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%.
    • 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。