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。

公开(公告)号：US06905530B2

公开(公告)日：2005-06-14

申请号：US10180133

申请日：2002-06-27

申请人： Takashi Yoshimura ,  Hiroyuki Amma ,  Masashi Fujinaga ,  Mitsumasa Iijima ,  Yasuo Hatai ,  Takayuki Matsumoto ,  Satoshi Uenosono ,  Shigeru Unami

发明人： Takashi Yoshimura ,  Hiroyuki Amma ,  Masashi Fujinaga ,  Mitsumasa Iijima ,  Yasuo Hatai ,  Takayuki Matsumoto ,  Satoshi Uenosono ,  Shigeru Unami

IPC分类号： C22C33/02

CPC分类号： C22C33/02 ,  B22F2998/00 ,  B22F2998/10 ,  B22F3/16 ,  C22C33/0228 ,  B22F3/02 ,  B22F3/10 ,  B22F3/20

摘要： In a preliminary molding step 1, a metallic powder mixture 7 obtained by blending an iron-based metal powder 7a with graphite 7b such that the graphite is present in an amount of preferably not less than 0.1% by weight, more preferably not less than 0.3% by weight, is compacted into a preform 8 having a density of not less than 7.3 g/cm3. In a provisional sintering step 2, the preform 8 is provisionally sintered at a predetermined temperature to form a metallic powder-molded body 9 having a structure in which the graphite remains along a grain boundary of the metal powder. In a re-compaction step 3, the metallic powder-molded body 9 is re-compacted into a re-compacted body 10. In a re-sintering step 4, the re-compacted body 10 is re-sintered to obtain a sintered body 11. In a heat treatment step 5, the sintered body 11 is heat-treated to obtain a heat-treated sintered body 11. Accordingly, in accordance with the present invention, there are provided a re-compacted body produced from a metallic powder-molded body having an excellent deformability which is suitably applied to the production of machine parts exhibiting high mechanical properties due to the use of sintered metal, and a sintered body produced from the re-compacted body as well as a process for the production thereof.

摘要翻译： 在预成型步骤1中，通过将铁基金属粉末7a与石墨7b共混而获得的金属粉末混合物7，使得石墨以优选不小于0.1重量％的量存在，更优选不少于 超过0.3重量％，被压实成密度不小于7.3g / cm 3的预成型体8。 在预烧结步骤2中，将预成型体8在规定温度下进行预烧结，形成金属粉末成形体9，该金属粉末成型体9具有沿着金属粉末的晶界留下的石墨的结构。 在再压制步骤3中，将金属粉末成型体9再压制成再压制体10。 在再烧结工序4中，重新烧结再压制体10，得到烧结体11。 在热处理工序5中，对烧结体11进行热处理，得到热处理烧结体11.因此，根据本发明，提供一种由金属粉末成型体 具有优异的变形性，其适用于由于使用烧结金属而显示出高机械性能的机器部件的制造，以及由再压制体制造的烧结体及其制造方法。

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）。

公开(公告)号：US06652618B1

公开(公告)日：2003-11-25

申请号：US10129737

申请日：2002-05-10

申请人： Shigeru Unami ,  Satoshi Uenosono

发明人： Shigeru Unami ,  Satoshi Uenosono

IPC分类号： B22F100

CPC分类号： C22C38/12 ,  C22C33/0207 ,  C22C33/0257 ,  C22C38/08 ,  C22C38/16

摘要： On the basis of mass percentage of a mixture, 1-5% of Ni powder, 0.5-3% of Cu powder, and 0.2-0.9% of graphite powder are mixed into an alloy steel powder containing 0.5-3 mass % of prealloyed Ni, more than 0.7 to 4 mass % of prealloyed Mo, and the balance being Fe and unavoidable impurities. The alloy steel powder may contain 0.2-0.7 mass % of prealloyed Cu in addition to Ni and Mo.

摘要翻译： 基于混合物的质量百分比，将含有0.5％Ni粉末，0.5-3％Cu粉末和0.2-0.9％石墨粉末的合金钢粉末混入含有0.5-3质量％的预合金化Ni ，超过0.7〜4质量％的预合金化Mo，余量为Fe和不可避免的杂质。 除了Ni和Mo之外，合金钢粉还含有0.2-0.7质量％的预合金化Cu。

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％）。

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）。

公开(公告)号：US07300490B2

公开(公告)日：2007-11-27

申请号：US11230714

申请日：2005-09-20

申请人： Yukiko Ozaki ,  Hiroshi Sugihara ,  Satoshi Uenosono

发明人： Yukiko Ozaki ,  Hiroshi Sugihara ,  Satoshi Uenosono

IPC分类号： B22F1/00

CPC分类号： C22C33/0228 ,  B22F1/0059

摘要： 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.

摘要翻译： 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。

公开(公告)号：US5976215A

公开(公告)日：1999-11-02

申请号：US137105

申请日：1998-08-20

申请人： Satoshi Uenosono ,  Yukiko Ozaki ,  Kuniaki Ogura ,  Toshio Nagase ,  Takeo Kobayashi

发明人： Satoshi Uenosono ,  Yukiko Ozaki ,  Kuniaki Ogura ,  Toshio Nagase ,  Takeo Kobayashi

IPC分类号： B22F1/00 ,  C08K3/08 ,  C08K9/04

CPC分类号： C08K3/08 ,  B22F1/0059 ,  C08K9/04 ,  B22F2999/00

摘要： An iron-based powder mixture for powder metallurgy, comprising: an iron-based powder, and from 0.05 to 0.50% by weight of a thermoplastic resin powder which comprises 50% or more by weight of units of at least one monomer selected from the group consisting of acrylic esters, methacrylic esters, and aromatic vinyl compounds, and whose average primary particle size is from 0.03 to 5 .mu.m, whose average agglomeration particle size is from 5 to 50 .mu.m, and whose average molecular weight measured by the specific viscosity of a solution is from 30000 to 5000000.

摘要翻译： 一种粉末冶金用的铁基粉末混合物，其特征在于，含有铁系粉末和0.05〜0.50重量％的热塑性树脂粉末，其含有50重量％以上的至少一种单体， 由丙烯酸酯，甲基丙烯酸酯和芳香族乙烯基化合物组成，其平均一次粒径为0.03〜5μm，平均聚集粒径为5〜50μm，平均分子量通过比粘度 的解决方案是从30000到5000000。

公开(公告)号：US06533836B2

公开(公告)日：2003-03-18

申请号：US09897396

申请日：2001-07-03

申请人： Satoshi Uenosono ,  Yukiko Ozaki

发明人： Satoshi Uenosono ,  Yukiko Ozaki

IPC分类号： B22F102

CPC分类号： B22F1/0077 ,  B22F1/0059 ,  B22F2001/0066 ,  B22F2998/00 ,  B22F2998/10 ,  B22F2999/00 ,  C22C33/0207 ,  B22F1/0003 ,  B22F1/0096 ,  B22F9/082 ,  B22F9/22

摘要： An iron-based mixed powder for use in powder metallurgy and excellent in die filling property and compressibility and without segregation, includes an iron-based powder in which alloying powder(s) is adhered to the surface by a binder and, further, a free lubricant. The iron-based powder includes a mixed iron powder of atomized iron powder and reduced iron powder.

公开(公告)号：US5989304A

公开(公告)日：1999-11-23

申请号：US973142

申请日：1997-11-28

申请人： Yukiko Ozaki ,  Satoshi Uenosono ,  Kuniaki Ogura

发明人： Yukiko Ozaki ,  Satoshi Uenosono ,  Kuniaki Ogura

IPC分类号： B22F1/00 ,  B22F1/02 ,  C22C33/02

CPC分类号： B22F1/0062 ,  B22F1/0059 ,  B22F1/0077 ,  B22F1/0096 ,  B22F1/02 ,  C22C33/02 ,  C22C33/0207 ,  B22F2003/023 ,  B22F2003/145 ,  B22F2998/00

摘要： An iron-based powder composition for powder metallurgy excellent in flowability and compactibility is produced in accordance with a method comprising the steps of: adding to iron-based and alloying powders, for a primary mixing, a surface treatment agent, and in addition, for a secondary mixing, a fatty acid amide and at least one lubricant, wherein the lubricant has a melting point higher than that of the fatty acid amide and can be a thermoplastic resin, a thermoplastic elastomer, and inorganic or organic compounds having a layered crystal structure; heating and stirring up a mixture after the secondary mixing at a temperature above a melting point of the fatty acid amide to melt the fatty acid amide; cooling, while mixing, the mixture subjected to the heating and stirring process so that the alloying powder and a lubricant having a melting point higher than the fatty acid amide adhere to a surface of the iron base powder subjected to the surface treatment by an adhesive force of the melt; and adding at the time of the cooling, for a tertiary mixing, a metallic soap and at least one thermoplastic resin or thermoplastic elastomer powders and inorganic or organic compounds having layered crystal structure. The mixture is heated to about 423K and loaded into a die for compaction.

摘要翻译： PCT No.PCT / JP97 / 00029 Sec。 371日期1997年11月28日 102（e）1997年11月28日日期PCT 1997年1月9日PCT PCT。 公开号WO98 / 05454 日期1998年12月2日根据包括以下步骤的方法制备粉末冶金用的粉末冶金用铁粉组合物：将铁基和合金粉末加入到初级混合表面处理剂中， 此外，对于二次混合，脂肪酸酰胺和至少一种润滑剂，其中润滑剂的熔点高于脂肪酸酰胺的熔点，并且可以是热塑性树脂，热塑性弹性体和无机或有机化合物 具有层状晶体结构; 在高于脂肪酸酰胺的熔点的温度下二次混合之后加热和搅拌混合物以熔化脂肪酸酰胺; 冷却，同时混合，将混合物进行加热和搅拌处理，使得合金粉末和熔点高于脂肪酸酰胺的润滑剂与通过粘合力进行表面处理的铁基粉末的表面粘附 的熔体; 在冷却时加入金属皂和至少一种热塑性树脂或热塑性弹性体粉末和具有层状晶体结构的无机或有机化合物。 将混合物加热至约423K并加载到模具中用于压实。