公开(公告)号：US20020043131A1

公开(公告)日：2002-04-18

申请号：US09934188

申请日：2001-08-21

申请人： Kawasaki Steel Corporation

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

IPC分类号： C22C038/12

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：US20030116745A1

公开(公告)日：2003-06-26

申请号：US10157604

申请日：2002-05-29

申请人： KAWASAKI STEEL CORPORATION

发明人： Yukiko Ozaki ,  Satoshi Uenosono ,  Hiroki Nakamaru ,  Yukiko Nakamura ,  Shigeaki Takajo ,  Sawae Takajo ,  Shigeru Unami ,  Shingo Saito

IPC分类号： C01G049/08

CPC分类号： B82Y30/00 ,  C01G23/003 ,  C01G49/009 ,  C01G49/06 ,  C01G49/08 ,  C01G51/006 ,  C01G53/00 ,  C01G53/006 ,  C01P2002/52 ,  C01P2002/54 ,  C01P2002/74 ,  C01P2004/45 ,  C01P2004/61 ,  C01P2004/62 ,  C01P2004/64 ,  C01P2006/10 ,  C01P2006/42 ,  C01P2006/60 ,  C01P2006/80

摘要： A magnetite-iron based composite powder includes magnetite with a ratio of X-ray diffraction intensity to that of null-Fe of about 0.001 to about 50 and has an average primary particle size of about 0.1 to about 10 nullm. The composite powder can highly dehalogenate organic halogen compounds and exhibits satisfactory absorption power of high frequency electromagnetic waves after molding. An ultrafine nonferrous inorganic compound powder may adhere to the surface of the composite powder, or at least the composite powder may adhere to the surfaces of small particles of a nonferrous inorganic compound to thereby yield a composite powder composition. The composite powder can be produced by partial reduction of a material powder containing a hematite based powder or by complete reduction and subsequent partial oxidation of the material powder.

摘要翻译： 磁铁矿铁复合粉末包括磁铁矿，其X射线衍射强度与α-Fe的比值为约0.001至约50，平均初级粒径为约0.1至约10微米。 复合粉末可以高效脱卤有机卤素化合物，并且在成型后表现出令人满意的高频电磁波吸收能力。 超细有机无机化合物粉末可能附着在复合粉末的表面，或者至少复合粉末可能粘附到有色无机化合物的小颗粒表面，从而得到复合粉末组合物。 复合粉末可以通过部分还原包含赤铁矿基粉末的材料粉末或通过材料粉末的完全还原和随后的部分氧化来制备。

公开(公告)号：US20030056621A1

公开(公告)日：2003-03-27

申请号：US10255280

申请日：2002-09-26

申请人： Kawasaki Steel Corporation

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

IPC分类号： C22C001/04

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.

公开(公告)号：US20030143097A1

公开(公告)日：2003-07-31

申请号：US10280529

申请日：2002-10-25

申请人： KAWASAKI STEEL CORPORATION

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： B22F003/12

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 1000null C. or higher and about 1300null 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 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 ，含有至多约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，并且在氮气分压为约30kPa以下的非氧化性气氛中，在预热体的温度 约1000℃以上且约1300℃以下，从而形成烧结铁基粉末金属体，其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 和哪个 含有至少约0.10％，至多约0.50的碳，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，并进一步施加再压实压实 再烧结和/或热处理，从而形成烧结组分，以及该方法或者包括在不限制氮分压的气氛中进行初步烧结，然后进行退火而不是烧结步骤，由此获得烧结铁 的粉末金属体，氮含量最多为0.010％。

公开(公告)号：US20020048526A1

公开(公告)日：2002-04-25

申请号：US09934428

申请日：2001-08-21

申请人： Kawasaki Steel Corporation

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： B22F003/12

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 1000null C. or higher and about 1300null 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 ，含有至多约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，并且在氮气分压为约30kPa以下的非氧化性气氛中，在预热体的温度 约1000℃以上且约1300℃以下，从而形成烧结铁基粉末金属体，其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 和哪个 含有至少约0.10％，至多约0.50的碳，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，并进一步施加再压实和 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：US20010038802A1

公开(公告)日：2001-11-08

申请号：US09817171

申请日：2001-03-27

申请人： KAWASAKI STEEL CORPORATION

发明人： Yukiko Ozaki ,  Satoshi Uenosono ,  Shigeru Unami

IPC分类号： B22F001/00 ,  C22C001/05

CPC分类号： B22F1/0077 ,  B22F1/0059 ,  B22F2998/00 ,  B22F2999/00 ,  B30B15/0011 ,  B22F2003/023 ,  B22F2003/026 ,  B22F2202/06

摘要： A manufacturing method for high-density iron-based powder compacts is disclosed. The temperature of the die is adjusted at ordinary temperature or at a predetermined temperature by preheating. A lubricant for die lubrication prepared by mixing at least two different lubricants having melting points higher than a predetermined temperature of the compaction pressure is sprayed at the upper part of the die and is introduced into the die and adhered by electrification to the surface of the die. The resulting die is filled with an iron-based mixed powder including a lubricant and molding is performed at ordinary temperature or at a temperature raised by heating. The at least two different lubricants having melting points higher than the predetermined temperature of the compaction pressure are preferably at least two materials selected from at least one of the following groups: metallic soaps, amide-based waxes, polyamides, polyethylenes, polypropylenes, polymers comprised of acrylic acid esters, polymers having methacrylic acid ester, plastics including fluorine and lubricants having layered crystal structures.

摘要翻译： 公开了一种高密度铁基粉末压块的制造方法。 通过预热将模具的温度调节到常温或预定温度。 通过将熔点高于压缩压力的预定温度的至少两种不同的润滑剂混合制备的用于模具润滑的润滑剂在模具的上部喷射并被引入模具中并通过带电粘附到模具的表面 。 所得模具填充有包含润滑剂的铁基混合粉末，并且在常温或通过加热升高的温度下进行成型。 具有高于压实压力的预定温度的熔点的至少两种不同润滑剂优选为至少两种选自以下组中的至少一种：金属皂，酰胺类蜡，聚酰胺，聚乙烯，聚丙烯，聚合物 的丙烯酸酯，具有甲基丙烯酸酯的聚合物，包含氟的塑料和具有层状晶体结构的润滑剂。