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11. 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.

12. 发明授权

US06416592B2 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：US06416592B2
公开(公告)日：2002-07-09
申请号：US09779041
申请日：2001-02-08
申请人： Osamu Kondo , Akihiro Matsuzaki , Shigeaki Takajo
发明人： Osamu Kondo , Akihiro Matsuzaki , Shigeaki Takajo
IPC分类号： H01F114
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。

13. 发明授权

US6162306A Electromagnetic steel sheet having excellent high-frequency magnetic properities and method 有权
标题翻译：具有优异的高频磁性的电磁钢板和方法
公开(公告)号：US6162306A
公开(公告)日：2000-12-19
申请号：US181179
申请日：1998-10-28
申请人： Shigeaki Takajo , Takako Yamashita , Akihiro Matsuzaki , Osamu Kondo
发明人： Shigeaki Takajo , Takako Yamashita , Akihiro Matsuzaki , Osamu Kondo
IPC分类号： C21D8/12 , C22C38/34 , H01F1/147
CPC分类号： C22C38/34 , C21D8/12
摘要： Electromagnetic steel sheets which contain Cr in an amount of from about 1.5 to 20% by weight and Si in an amount of from about 2.5 to 10% by weight, while having a total amount of C and N of not larger than about 100 ppm by weight, and which has a specific resistivity of not smaller than about 60 .mu..OMEGA..multidot.cm.
摘要翻译：含有约1.5〜20重量％的Cr和约2.5〜10重量％的Si的电磁钢板，而C和N的总量不大于约100ppm，重量，其电阻率不小于约60微米欧米茄×厘米。

14. 发明授权

US5135566A Iron base powder mixture and method 失效
标题翻译：铁粉粉末混合物及方法
公开(公告)号：US5135566A
公开(公告)日：1992-08-04
申请号：US686846
申请日：1991-04-17
申请人： Ichio Sakuranda , Ritsuo Okabe , Takao Omura , Yoshisato Kiyota , Shigeaki Takajo
发明人： Ichio Sakuranda , Ritsuo Okabe , Takao Omura , Yoshisato Kiyota , Shigeaki Takajo
IPC分类号： B22F1/00 , C22C33/02
CPC分类号： B22F1/0077 , B22F1/0059 , C22C33/0207 , B22F2001/0066 , B22F2998/00
摘要： An iron base powder mixture for powder metallurgy, comprising an iron based powder and an alloying powder and/or a powder for improving machinability, wherein the alloying powder and/or the powder for improving machinability are adhered to the surface of the ferrous powder by means of a melted-together binder composed of an oil and a metal soap or wax.
摘要翻译： 1.一种粉末冶金用铁粉末混合物，其特征在于，含铁基粉末和合金粉末和/或粉末，以提高机械加工性，其中用于提高机械加工性的合金粉末和/或粉末通过装置粘附在铁粉的表面上由油和金属皂或蜡组成的熔融粘合剂。

15. 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.

16. 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.

17. 发明授权

US06364962B1 Electromagnetic steel sheet having excellent high-frequency magnetic properties and method 有权
标题翻译：具有优异的高频磁性能和方法的电磁钢板
公开(公告)号：US06364962B1
公开(公告)日：2002-04-02
申请号：US09649944
申请日：2000-08-29
申请人： Shigeaki Takajo , Takako Yamashita , Akihiro Matsuzaki , Osamu Kondo
发明人： Shigeaki Takajo , Takako Yamashita , Akihiro Matsuzaki , Osamu Kondo
IPC分类号： H01F1147
CPC分类号： C22C38/34 , C21D8/12
摘要： Electromagnetic steel sheets which contain Cr in an amount of from about 1.5 to 20% by weight and Si in an amount of from about 2.5 to 10% by weight, while having a total amount of C and N of not larger than about 100 ppm by weight, and which has a specific resistivity of not smaller than about 60 &mgr;&OHgr;·cm.
摘要翻译：含有约1.5〜20重量％的Cr和约2.5〜10重量％的Si的电磁钢板，而C和N的总量不大于约100ppm，重量，其电阻率不小于约60μOMEGA.cm。

18. 发明授权

US06322638B1 Electromagnetic steel sheet having excellent high-frequency magnetic properties 有权
标题翻译：具有优异的高频磁性能的电磁钢板
公开(公告)号：US06322638B1
公开(公告)日：2001-11-27
申请号：US09649945
申请日：2000-08-29
申请人： Shigeaki Takajo , Takako Yamashita , Akihiro Matsuzaki , Osamu Kondo
发明人： Shigeaki Takajo , Takako Yamashita , Akihiro Matsuzaki , Osamu Kondo
IPC分类号： H01F1147
CPC分类号： C22C38/34 , C21D8/12
摘要： Electromagnetic steel sheets which contain Cr in an amount of from about 1.5 to 20% by weight and Si in an amount of from about 2.5 to 10% by weight, while having a total amount of C and N of not larger than about 100 ppm by weight, and which has a specific resistivity of not smaller than about 60 &mgr;&OHgr;·cm.
摘要翻译：含有约1.5〜20重量％的Cr和约2.5〜10重量％的Si的电磁钢板，而C和N的总量不大于约100ppm，重量，其电阻率不小于约60μOMEGA.cm。

19. 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。

20. 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。

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