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1. 发明授权

US5476534A Iron-based powder mixture and method 失效
标题翻译：铁粉混合物及方法
公开(公告)号：US5476534A
公开(公告)日：1995-12-19
申请号：US101475
申请日：1993-08-02
申请人： Kuniaki Ogura , Shigeaki Takajo , Hiroyuki Ishikawa , Akio Sonobe , Yoshiaki Maeda , Toshiyuki Minegishi
发明人： Kuniaki Ogura , Shigeaki Takajo , Hiroyuki Ishikawa , Akio Sonobe , Yoshiaki Maeda , Toshiyuki Minegishi
IPC分类号： B22F1/00 , C22C33/02 , B22F1/02
CPC分类号： B22F1/0077 , B22F1/0059 , B22F1/0096 , C22C33/0207 , B22F2998/00
摘要： An iron-based powder mixture for powder metallurgy essentially consists of a melted mixture, as a binder, which includes about 0.1% to about 1.0% by weight of a powder of at least one organic compound selected from stearic acid, oleic acid amide, and stearic acid amide, and about 0.1% to about 1.0% by weight of a powder of stearic acid bisamide; and the balance which is an iron-based powder, to the surface of which adhered about 0.1% to about 3.0% by weight of an alloying powder and/or a powder for improving machinability. Disclosed also is a method of producing the mixture.
摘要翻译：用于粉末冶金的铁基粉末混合物基本上由作为粘合剂的熔融混合物组成，其包含约0.1重量％至约1.0重量％的至少一种选自硬脂酸，油酸酰胺和硬脂酸酰胺和约0.1％至约1.0％重量的硬脂酸双酰胺粉末; 余量为铁基粉末，其表面附着在合金粉末和/或粉末中的0.1％〜约3.0％重量，以提高机械加工性。还公开了制备该混合物的方法。

2. 发明授权

US5279640A Method of making iron-based powder mixture 失效
标题翻译：制备铁基粉末混合物的方法
公开(公告)号：US5279640A
公开(公告)日：1994-01-18
申请号：US948668
申请日：1992-09-22
申请人： Kuniaki Ogura , Shigeaki Takajo , Hiroyuki Ishikawa , Akio Sonobe , Yoshiaki Maeda , Toshiyuki Minegishi
发明人： Kuniaki Ogura , Shigeaki Takajo , Hiroyuki Ishikawa , Akio Sonobe , Yoshiaki Maeda , Toshiyuki Minegishi
IPC分类号： B22F1/00 , C22C33/02 , B22F9/04
CPC分类号： B22F1/0077 , B22F1/0059 , B22F1/0096 , C22C33/0207 , B22F2998/00
摘要： An iron-based powder mixture for powder metallurgy essentially consists of a melted mixture, as a binder, which includes about 0.1% to about 1.0% by weight of a powder of at least one organic compound selected from stearic acid, oleic acid amide, and stearic acid amide, and about 0.1% to about 1.0% by weight of a powder of stearic acid bisamide; and the balance which is an iron-based powder, to the surface of which adhered about 0.1% to about 3.0% by weight of an alloying powder and/or a powder for improving machinability. Disclosed also is a method of producing the mixture.
摘要翻译：用于粉末冶金的铁基粉末混合物基本上由作为粘合剂的熔融混合物组成，其包含约0.1重量％至约1.0重量％的至少一种选自硬脂酸，油酸酰胺和硬脂酸酰胺和约0.1％至约1.0％重量的硬脂酸双酰胺粉末; 余量为铁基粉末，其表面附着在合金粉末和/或粉末中的0.1％〜约3.0％重量，以提高机械加工性。还公开了制备该混合物的方法。

3. 发明授权

US4971755A Method for preparing powder metallurgical sintered product 失效
标题翻译：粉末冶金烧结产品的制备方法
公开(公告)号：US4971755A
公开(公告)日：1990-11-20
申请号：US369069
申请日：1989-06-20
申请人： Masaki Kawano , Kuniaki Ogura , Shigeaki Takajo , Hiroshi Ohtsubo , Keisuke Yoshimura , Yoshiaki Maeda
发明人： Masaki Kawano , Kuniaki Ogura , Shigeaki Takajo , Hiroshi Ohtsubo , Keisuke Yoshimura , Yoshiaki Maeda
IPC分类号： B22F1/00 , C22C33/02
CPC分类号： C22C33/0207 , B22F1/0014 , B22F2998/10
摘要： It is disclosed a method for preparing a large-sized powder metallurgical sintered product having a superior characteristic by charging mixtures of three types of metallic powder composed of coarse particles, middle particles and fine particles into the molding die while vibrating it, heating the charged material together with the molding die, sintering them, and infiltrating metal of low melting point into the sintered body. According to this method, it is possible to get a large-sized sintered body having a superior strength and surface smoothness or a sintered body prohibiting any cracks or slits by arranging the proper particle size.

4. 发明授权

US4804409A Alloy steel powder for powder metallurgy 失效
标题翻译：粉末冶金用合金钢粉末
公开(公告)号：US4804409A
公开(公告)日：1989-02-14
申请号：US117151
申请日：1987-09-11
申请人： Masaki Kawano , Kuniaki Ogura , Teruyoshi Abe , Shigeaki Takajo
发明人： Masaki Kawano , Kuniaki Ogura , Teruyoshi Abe , Shigeaki Takajo
IPC分类号： B22F1/00 , C22C33/02 , C22C38/00 , C22C38/12 , C22C38/08
CPC分类号： C22C33/0264
摘要： The improvement of strength and hardness of steel powders can be realized under good compressibility by alloying 0.2.about.2.0 wt. % of W and 0.8.about.3.0 wt. % of Ni, and further 0.1.about.1.0 wt. % of Mo or 0.2.about.2.0 wt. % of Cu in steel powder, and further the reduction of dimensional deviation introduced by heat treatment after sintering can also be achieved. This substantially eliminates damaging the shape and size of the sintered body after heat treatment.

5. 发明授权

US4954171A Composite alloy steel powder and sintered alloy steel 失效
标题翻译：复合合金钢粉末和烧结合金钢
公开(公告)号：US4954171A
公开(公告)日：1990-09-04
申请号：US381652
申请日：1989-07-14
申请人： Shigeaki Takajo , Osamu Furukimi , Kuniaki Ogura , Keiichi Maruta , Teruyoshi Abe , Ichio Sakurada
发明人： Shigeaki Takajo , Osamu Furukimi , Kuniaki Ogura , Keiichi Maruta , Teruyoshi Abe , Ichio Sakurada
IPC分类号： C22C33/02
CPC分类号： C22C33/0264 , C22C33/0207 , C22C33/0257 , Y10T428/12181
摘要： Provided herein are high-strength high-toughness sintered alloy steel and composite alloy steel powder useful for the production thereof. The sintered alloy steel contains, as the alloy components in the final product, Ni, Mo, and/or W, and C, if necessary, said alloy being composed of 0.50-3.50 wt % of Ni, 0.65-3.50 wt % of Mo+1/2W, (and 0.3-0.8 wt % of C, if necessary), and the remainder of Fe and inevitable impurities, and has a density higher than 7.0 g/cm.sup.3 and a tensile strength higher than 130 kgf/mm.sup.2 after quenching and tempering. The composite alloy steel powder is composed of iron powder particles and powdery alloy components attached by diffusion to part of the surface of the iron powder particles, with the content of Ni and the content of Mo+1/2W in the steel powder of particle diameter smaller than 45 .infin.m being in the range of 2.0-4.2 times the average content in the entire steel powder. The sintered alloy steel has high strength and high toughness despites its comparatively low alloy composition and can be produced without any special equipment. The heat-treated sintered steel meets the requirements for automotive parts and the like.
摘要翻译： PCT No.PCT / JP88 / 01007 Sec。 371日期：1989年7月14日 102（e）日期1989年7月14日PCT提交1988年9月30日PCT公布。公开号WO89 / 02802 日本1989年4月6日。这里提出了用于制造高强度高韧性烧结合金钢和复合合金钢粉末。烧结合金钢作为最终产品中的合金成分含有Ni，Mo和/或W和C，如果需要，所述合金由0.50-3.50wt％的Ni，0.65-3.50wt％的Mo + 1 / 2W，（如果需要，为0.3〜0.8重量％的C），余量为Fe和不可避免的杂质，并且在淬火后具有高于7.0g / cm 3的密度和高于130kgf / mm 2的拉伸强度并回火。复合合金钢粉末由铁粉颗粒和粉末状合金组分组成，通过扩散到铁粉颗粒表面的一部分，其中Ni含量和Mo + 1 / 2W含量在钢粉中的粒径小于45的INFINITY m在整个钢粉末的平均含量的2.0-4.2倍的范围内。烧结合金钢具有较高的强度和高韧性，可以使其相对低的合金组成不受任何特殊的设备制造。热处理烧结钢满足汽车部件等的要求。

6. 发明授权

US4985309A Alloyed steel powder for powder metallurgy 失效
标题翻译：粉末冶金用合金钢粉末
公开(公告)号：US4985309A
公开(公告)日：1991-01-15
申请号：US226478
申请日：1988-08-01
申请人： Kuniaki Ogura , Junichi Oota , Teruyoshi Abe , Shigeaki Takajo
发明人： Kuniaki Ogura , Junichi Oota , Teruyoshi Abe , Shigeaki Takajo
IPC分类号： B22F1/02 , C22C33/02
CPC分类号： C22C33/0264 , B22F1/025 , C22C33/0207 , Y10T428/12181
摘要： An alloyed steel powder for metallurgy is provided with a water-atomized alloyed steel powder wherein an alloy component, an oxide of which is difficult to be reduced with hydrogen in the production of the powder, has been prealloyed in a composition range not exerting a bad influence upon compressibility of the steel powder, and an alloy component or components easier to be reduced with hydrogen than the above alloy component, the said easily reducible alloy component or components being partially diffused and adhered in a powdered form to the particle surfaces of the water-atomized alloyed steel powder.The composite powder of the invention has a coating layer of at least one element selected from nickel, copper, molybdenum and tungsten which is partially diffused and adhered in a powder form to the surface of a chromium containing prealloyed steel powder.

7. 发明授权

US06322639B1 Magnetic steel sheet having excellent magnetic properties and method of producing the same 失效
标题翻译：磁性优异的磁钢板及其制造方法
公开(公告)号：US06322639B1
公开(公告)日：2001-11-27
申请号：US09462296
申请日：2000-01-04
申请人： Akihiro Matsuzaki , Osamu Kondo , Takako Yamashita , Shigeaki Takajo
发明人： Akihiro Matsuzaki , Osamu Kondo , Takako Yamashita , Shigeaki Takajo
IPC分类号： H01F112
CPC分类号： C22C38/02 , C21D8/1222 , C21D8/1233 , C21D8/1272 , C22C38/06
摘要： A magnetic steel sheet used for an alternating current core, and having excellent magnetic properties in both a rolling direction, and the direction perpendicular thereto, and a method of producing the magnetic steel sheet. The magnetic steel sheet in a recrystallized cold-rolled condition is characterized in that the intensity ratio of {100} orientation to random orientation is 2.0 or more, the intensity ratio of {011} orientation to random orientation thereof is 2.0 to 10.0, and the intensity ratio of //ND orientation to random orientation is preferably 2.0 or less. The method of producing a magnetic steel sheet includes hot-rolling a silicon steel slab so that the intensity ratio of (015)[100] orientation to random orientation of the recrystallized hot-rolled sheet is 3.0 or more.
摘要翻译：一种用于交流磁芯的磁性钢板，并且在轧制方向和与其垂直的方向上具有优异的磁性能，以及制造该电磁钢板的方法。再结晶冷轧条件下的电磁钢板的特征在于{100} <001>取向与随机取向的强度比为2.0以上，{011} <100>取向与其随机取向的强度比为 2.0至10.0，并且<001> // ND取向与随机取向的强度比优选为2.0以下。制造电磁钢板的方法包括将硅钢板热轧，使得再结晶热轧板的（015）[100]取向与随机取向的强度比为3.0以上。

8. 发明授权

US4964907A Sintered bodies and production process thereof 失效
标题翻译：烧结体及其制造方法
公开(公告)号：US4964907A
公开(公告)日：1990-10-23
申请号：US393765
申请日：1989-08-14
申请人： Yoshisato Kiyota , Junichi Ohta , Hiroshi Ohtsubo , Shigeaki Takajo
发明人： Yoshisato Kiyota , Junichi Ohta , Hiroshi Ohtsubo , Shigeaki Takajo
IPC分类号： B22F3/10 , B22F3/22 , H01F1/22
CPC分类号： B22F3/225 , B22F3/101 , B22F3/22 , H01F1/22 , A61F2002/30968 , B22F2998/00
摘要： A process is provided for the production of a sintered body. The process includes the following consecutive steps: (i) mixing and kneading one or more metal powders and/or one or more alloy powder with a binder into a compound, said metal and alloy powders having an average particle size not greater than 30 .mu.m, (ii) injection-molding the compound into a green body; (iii) debinding the green body to form a debound body; and (iv) subjecting the debound body to first-stage sintering at 1,050.degree.-1,250.degree. C. in a reducing or reduced-pressure atmosphere and then to second-stage sintering at a temperature in a range of 1,100.degree.-1,400.degree. C. which is higher than that of the first-stage sintering. This process can provide sintered Ti bodies and sintered magnetic bodies of the Fe-Si type, which have a density ratio of at least 95%.

9. 发明授权

US06248185B1 Electromagnetic steel sheet having excellent magnetic properties and production method thereof 有权
标题翻译：磁性优异的电磁钢板及其制造方法
公开(公告)号：US06248185B1
公开(公告)日：2001-06-19
申请号：US09134305
申请日：1998-08-14
申请人： Osamu Kondo , Akihiro Matsuzaki , Shigeaki Takajo
发明人： Osamu Kondo , Akihiro Matsuzaki , Shigeaki Takajo
IPC分类号： H01F116
CPC分类号： C21D8/1222 , H01F1/16
摘要： Electromagnetic steel sheet having excellent magnetic properties and a texture gratly integrated in the {100} orientation, and an uncomplicated and low cost production method; with about a 15 &mgr;&OHgr;·cm or more specific resistivity, about a 2.0 or more {100} integration degree /{111} integration degree and about a 10 &mgr;m to 500 &mgr;m grain diameter; when about 0.1 to 3.5% by weight of Si is present, the {100} integration degree is about 10 or more; when about 0.2 to 1.2% by weight of P is present, the {100} integration degree is about 3 or more; by applying a large reduction ratio to a steel slab in the vicinity of the final stage of hot rolling, with the hot rolling finishing temperature controlled at about 750 to 1150° C., hot rolled steel having a texture highly integrated in the {100} orientation is economically produced.
摘要翻译：具有优良的磁性能和结合在{100} <001>取向的结构的电磁钢板，以及不复杂和低成本的生产方法; 具有大约15μmOMEGA.cm或更高的电阻率，约2.0或更多{100} <001>积分度/ {111} 积分度和约10μm至500μm的粒径; 当存在约0.1至3.5重量％的Si时，{100} <001>整合度为约10或更大; 当存在约0.2-1.2重量％的P时，{100} <001>整合度为约3或更大; 通过对热轧最后阶段附近的钢坯施加大的压下率，在热轧精轧温度控制在约750〜1150℃的条件下，具有高度集成在{100} <001>方向经济地生产。

10. 发明授权

US4824734A Tin-containing iron base powder and process for making 失效
标题翻译：含锡铁粉及其制造工艺
公开(公告)号：US4824734A
公开(公告)日：1989-04-25
申请号：US70144
申请日：1987-07-02
申请人： Shigeaki Takajo
发明人： Shigeaki Takajo
IPC分类号： B22F1/00 , B22F1/02 , C22C33/02 , H01F1/22
CPC分类号： B22F1/025 , B22F1/0096 , C22C33/0207 , H01F1/22 , Y10T428/12181
摘要： The invention provides a tin-containing iron base powder comprising iron base particulates each having tin-rich portions on the surface in which at least a part of the tin forms a compound with iron, wherein the total tin content ranges from 1 to 20% by weight of the powder. The invention also provides a process for making such a tin-containing iron base powder by mixing an iron base powder with a powder tin compound capable of generating metallic tin upon thermal decomposition, and heating the mixture to a temperature of 450.degree. to 700.degree. C. in a reducing or non-oxidizing atmosphere. Using this tin-containing iron base powder as a sintering material, there can be obtained sintered products having a high density and excellent magnetic properties.
摘要翻译： PCT No.PCT / JP84 / 00278 Sec。 371日期1985年2月1日 102（e）1985年2月1日PCT申请日1984年6月1日PCT公布。出版物WO84 / 0471200 日期为1984年12月6日。本发明提供一种含铁铁基粉末，其包含在表面上具有富铁部分的铁基颗粒，其中至少一部分锡与铁形成化合物，其中总锡含量的范围为粉末的1至20重量％。本发明还提供了一种通过将铁基粉末与能够在热分解时产生金属锡的粉末锡化合物混合来制备这种含锡铁基粉末的方法，并将该混合物加热到450℃至700℃ 在还原或非氧化气氛中。使用该含锡铁基粉末作为烧结材料，可以获得具有高密度和优异磁性的烧结产品。

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