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1.发明授权
公开(公告)号：US5665177A
公开(公告)日：1997-09-09
申请号：US878523
申请日：1992-05-05
CPC分类号： B22D11/0611 , H01F1/0571 , Y10S428/90 , Y10T428/2457 , Y10T428/31
摘要： A permanent magnet material is prepared by cooling with a chill roll a molten alloy containing R wherein R is at least one rare earth element inclusive of Y, Fe or Fe and Co, and B. The chill roll has a plurality of circumferentially extending grooves in a circumferential surface, the distance between two adjacent ones of the grooves at least in a region with which the molten alloy comes in contact being 100 to 300 .mu.m average in an arbitrary cross section containing a roll axis. Permanent magnet material of stable performance is obtained since the variation of cooling rate caused by a change in the circumferential speed of the chill roll is small. The variation of cooling rate is small even when it is desired to change the thickness of the magnet by altering the circumferential speed. The equalized groove pitch results in a minimized variation in crystal grain diameter.
摘要翻译： 通过用冷却辊冷却含有R的熔融合金来制备永久磁铁材料，其中R是至少一种包括Y，Fe或Fe和Co以及B的稀土元素。冷却辊具有多个周向延伸的凹槽 至少在熔融合金接触的区域中，两个相邻的槽之间的距离在包含辊轴的任意横截面中平均为100〜300μm。 由于冷却辊的圆周速度的变化引起的冷却速度的变化小，所以获得了稳定性能的永久磁铁材料。 即使希望通过改变圆周速度来改变磁体的厚度，冷却速度的变化也很小。 均匀的沟槽间距导致晶粒直径的最小化。
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公开(公告)号：US5209789A
公开(公告)日：1993-05-11
申请号：US755188
申请日：1991-09-05
CPC分类号： H01F1/0571 , B22D11/0697 , Y10S428/928 , Y10T428/12465
摘要： A melt of Nd-Fe-B alloy is injected in an inert gas atmosphere through a nozzle against a chill roll or a pair of chill rolls rotating relative to the nozzle for contacting the melt with the circumference of the chill roll or rolls, thereby quenching the melt. The chill roll has a low heat conductivity surface layer around a base or has a predetermined surface roughness on its circumference. The contact time of the melt with the chill roll can be increased by blowing an inert gas flow. Further the melt is quenched in an inert gas atmosphere of up to 1 Torr. A wind shield is disposed in proximity to the chill roll circumference for preventing a wind of the ambient gas induced by rotation of the chill roll from reaching a paddle of the melt. With these means, there is obtained a permanent magnet material having a grain diameter with a reduced variation.
摘要翻译： Nd-Fe-B合金的熔体通过喷嘴在惰性气体气氛中通过冷却辊或相对于喷嘴旋转的一对冷却辊注入，用于使熔体与冷却辊或辊的周边接触，从而淬火 熔化。 冷却辊在基部周围具有低导热性表面层或在其圆周上具有预定的表面粗糙度。 可以通过吹入惰性气流来增加熔体与冷却辊的接触时间。 此外，熔体在高达1托的惰性气体气氛中淬火。 挡风玻璃设置在冷却辊周边附近，用于防止由冷却辊的旋转引起的环境气体的风到达熔体的桨叶。 通过这些方法，获得具有减小的变化的粒径的永久磁铁材料。
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3.发明授权
公开(公告)号：US5993939A
公开(公告)日：1999-11-30
申请号：US835814
申请日：1997-04-16
CPC分类号： B22D11/0611 , H01F1/0571 , Y10S428/90 , Y10T428/2457 , Y10T428/31
摘要： A permanent magnet material is prepared by cooling with a chill roll a molten alloy containing R wherein R is at least one rare earth element inclusive of Y, Fe or Fe and Co, and B. The chill roll has a plurality of circumferentially extending grooves in a circumferential surface, the distance between two adjacent ones of the grooves at least in a region with which the molten alloy comes in contact being 100 to 300 .mu.m on average in an arbitrary cross section containing a roll axis. Permanent magnet material of stable performance is obtained since the variation of cooling rate caused by a change in the circumferential speed of the chill roll is small. The variation of cooling rate is small even when it is desired to change the thickness of the magnet by altering the circumferential speed. The equalized groove pitch results in a minimized variation in crystal grain diameter.
摘要翻译： 通过用冷却辊冷却含有R的熔融合金来制备永久磁铁材料，其中R是至少一种包括Y，Fe或Fe和Co以及B的稀土元素。冷却辊具有多个周向延伸的凹槽 至少在熔融合金接触的区域中，在包含辊轴的任意横截面中，平均两个相邻槽之间的距离为100-300μm。 由于冷却辊的圆周速度的变化引起的冷却速度的变化小，所以获得了稳定性能的永久磁铁材料。 即使希望通过改变圆周速度来改变磁体的厚度，冷却速度的变化也很小。 均匀的沟槽间距导致晶粒直径的最小化。
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公开(公告)号：US5309977A
公开(公告)日：1994-05-10
申请号：US9948
申请日：1993-01-27
CPC分类号： H01F1/0571 , B22D11/0697 , Y10S428/928 , Y10T428/12465
摘要： A melt of Nd-Fe-B alloy is injected in an inert gas atmosphere through a nozzle against a chill roll or a pair of chill rolls rotating relative to the nozzle for contacting the melt with the circumference of the chill roll or rolls, thereby quenching the melt. The chill roll has a low heat conductivity surface layer around a base or has a predetermined surface roughness on its circumference. The contact time of the melt with the chill roll can be increased by blowing an inert gas flow. Further the melt is quenched in an inert gas atmosphere of up to 1 Torr. A wind shield is disposed in proximity to the chill roll circumference for preventing a wind of the ambient gas induced by rotation of the chill roll from reaching a paddle of the melt. With these means, there is obtained a permanent magnet material having a grain diameter with a reduced variation.
摘要翻译： Nd-Fe-B合金的熔体通过喷嘴在惰性气体气氛中通过冷却辊或相对于喷嘴旋转的一对冷却辊注入，用于使熔体与冷却辊或辊的周边接触，从而淬火 熔化。 冷却辊在基部周围具有低导热性表面层或在其圆周上具有预定的表面粗糙度。 可以通过吹入惰性气流来增加熔体与冷却辊的接触时间。 此外，熔体在高达1托的惰性气体气氛中淬火。 挡风玻璃设置在冷却辊周边附近，用于防止由冷却辊的旋转引起的环境气体的风到达熔体的桨叶。 通过这些方法，获得具有减小的变化的粒径的永久磁铁材料。
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公开(公告)号：US5641363A
公开(公告)日：1997-06-24
申请号：US364756
申请日：1994-12-27
申请人： Akira Fukuno , Hideki Nakamura , Gouichi Nishizawa
发明人： Akira Fukuno , Hideki Nakamura , Gouichi Nishizawa
CPC分类号： H01F1/0577 , B22F3/1103 , B22F2998/10
摘要： In the manufacture of a rare earth sintered magnet of the Nd.sub.2 Fe.sub.14 B system, closed voids are formed in the magnet in a predetermined fraction to minimize shrinkage. Unlike open voids or pores in conventional semi-sintered magnets, the closed voids do not incur magnet corrosion since they do not communicate to the magnet exterior. By minimizing shrinkage during sintering in this way, a ring or plate-shaped thin wall anisotropic magnet can be prepared without machining for shape correction, achieving a cost reduction and a productivity improvement. Since a high density compact has a high deflective strength, it is easy to handle, minimizing cracking and chipping between the compacting and sintering steps.
摘要翻译： 在制造Nd2Fe14B系稀土烧结磁体时，以预定的比例在磁体中形成封闭的空隙，以使收缩率最小化。 与常规半烧结磁体中的开放空隙或孔不同，封闭的空隙不会引起磁体腐蚀，因为它们不与磁体外部连通。 通过以这种方式使烧结期间的收缩最小化，可以在不进行形状校正的机械加工的情况下制备环形或板状的薄壁各向异性磁体，从而实现成本降低和生产率提高。 由于高密度压块具有高的偏转强度，因此易于处理，使压实和烧结步骤之间的裂纹和碎裂最小化。
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公开(公告)号：US5834663A
公开(公告)日：1998-11-10
申请号：US824008
申请日：1997-03-25
申请人： Akira Fukuno , Hideki Nakamura , Gouichi Nishizawa
发明人： Akira Fukuno , Hideki Nakamura , Gouichi Nishizawa
CPC分类号： H01F1/0577 , B22F3/1103 , B22F2998/10
摘要： In the manufacture of a rare earth sintered magnet of the Nd.sub.2 Fe.sub.14 B system, closed voids are formed in the magnet in a predetermined fraction to minimize shrinkage. Unlike open voids or pores in conventional semi-sintered magnets, the closed voids do not incur magnet corrosion since they do not communicate to the magnet exterior. By minimizing shrinkage during sintering in this way, a ring or plate-shaped thin wall anisotropic magnet can be prepared without machining for shape correction, achieving a cost reduction and a productivity improvement. Since a high density compact has a high deflective strength, it is easy to handle, minimizing cracking and chipping between the compacting and sintering steps.
摘要翻译： 在制造Nd2Fe14B系稀土烧结磁体时，以预定的比例在磁体中形成封闭的空隙，以使收缩率最小化。 与常规半烧结磁体中的开放空隙或孔不同，封闭的空隙不会引起磁体腐蚀，因为它们不与磁体外部连通。 通过以这种方式使烧结期间的收缩最小化，可以在不进行形状校正的机械加工的情况下制备环形或板状的薄壁各向异性磁体，从而实现成本降低和生产率提高。 由于高密度压块具有高的偏转强度，因此易于处理，使压实和烧结步骤之间的裂纹和碎裂最小化。
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7.发明授权Hard magnetic composition, permanent magnet powder, method for permanent magnet powder, and bonded magnet 失效硬磁性组合物，永久磁铁粉末，永磁粉末方法和粘结磁铁公开(公告)号：US07465363B2
公开(公告)日：2008-12-16
申请号：US10540345
申请日：2004-01-28
申请人： Atsushi Sakamoto , Makoto Nakane , Hideki Nakamura , Akira Fukuno
发明人： Atsushi Sakamoto , Makoto Nakane , Hideki Nakamura , Akira Fukuno
CPC分类号： H01F1/0558 , C22C38/001 , C22C38/005 , C22C38/02 , C22C38/10 , C22C38/14 , H01F1/058 , H01F1/0593
摘要： A single phase consisting of a ThMn12 phase can be obtained by having the composition thereof represented by a general formula R(Fe100-y-wCowTiy)xSizAv (in the general formula, R is at least one element selected from rare earth elements (here the rare earth elements signify a concept inclusive of Y), Nd accounts for 50 mol % or more of R, and A is N and/or C) in which the molar ratios in the general formula are such that x=10 to 12.5, y=(8.3−1.7×z) to 12.3, z=0.1 to 2.3, v=0.1 to 3 and w=0 to 30, and the relation (Fe+Co+Ti+Si)/R>12 is satisfied.
摘要翻译： 由ThMn12相组成的单相可以通过使其组成由通式R（Fe100-y-wCowTiy）xSizAv表示（在通式中，R是选自稀土元素中的至少一种元素（这里是 稀土元素表示包括Y）的概念，Nd占R的50摩尔％以上，A是N和/或C），其中通式中的摩尔比使得x = 10〜12.5，y =（8.3-1.7×z）〜12.3，z = 0.1〜2.3，v = 0.1〜3，w = 0〜30，满足关系式（Fe + Co + Ti + Si）/R≥12。
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8.发明申请Hard magnetic composition, permanent magnet powder, method for permanent magnet powder, and bonded magnet 失效硬磁性组合物，永久磁铁粉末，永磁粉末方法和粘结磁铁公开(公告)号：US20060169360A1
公开(公告)日：2006-08-03
申请号：US10540345
申请日：2004-01-28
申请人： Atsushi Sakamoto , Makoto Nakane , Hideki Nakamura , Akira Fukuno
发明人： Atsushi Sakamoto , Makoto Nakane , Hideki Nakamura , Akira Fukuno
CPC分类号： H01F1/0558 , C22C38/001 , C22C38/005 , C22C38/02 , C22C38/10 , C22C38/14 , H01F1/058 , H01F1/0593
摘要： A single phase consisting of a ThMn12 phase can be obtained by having the composition thereof represented by a general formula R(Fe100-y-wCowTiy)xSizAv (in the general formula, R is at least one element selected from rare earth elements (here the rare earth elements signify a concept inclusive of Y), Nd accounts for 50 mol % or more of R, and A is N and/or C) in which the molar ratios in the general formula are such that x=10 to 12.5, y=(8.3−1.7×z) to 12.3, z=0.1 to 2.3, v=0.1 to 3 and w=0 to 30, and the relation (Fe+Co+Ti+Si)/R>12 is satisfied.
摘要翻译： 由ThMn 12相组成的单相可以通过使其组成由通式R（Fe）100-y w / Co （在通式中，R是选自至少一个元素） 来自稀土元素（这里的稀土元素表示包括Y的概念），Nd占R的50mol％以上，A是N和/或C），其中通式中的摩尔比使得 x = 10〜12.5，y =（8.3-1.7×z）〜12.3，z = 0.1〜2.3，v = 0.1〜3，w = 0〜30，关系式（Fe + Co + Ti + Si） 12满足。
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公开(公告)号：US11016403B2
公开(公告)日：2021-05-25
申请号：US16742952
申请日：2020-01-15
申请人： Hideki Nakamura , Tadayoshi Uchida , Shuya Sugimoto , Mitsuaki Hirose , Noboru Toriu , Kaori Harada
发明人： Hideki Nakamura , Tadayoshi Uchida , Shuya Sugimoto , Mitsuaki Hirose , Noboru Toriu , Kaori Harada
摘要： An electrophotographic photoconductor is provided that includes a conductive substrate, an undercoat layer overlying the conductive substrate, and a photosensitive layer overlying the undercoat layer. The undercoat layer contains zinc oxide particles and a binder resin and has a volume resistivity of 0.03×106 Ω·cm or less in an electrical field of 5 V/μm at a temperature of 23 degrees C. and a relative humidity of 55%. The photosensitive layer contains a compound represented by the following general formula (1): where each of R1 to R3 independently represents a hydrogen atom, a halogen atom, an alkyl group having 1 to 6 carbon atoms which may have a substituent, or a substituted or unsubstituted aryl group having 6 to 12 carbon atoms.
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公开(公告)号：US09382094B2
公开(公告)日：2016-07-05
申请号：US14007210
申请日：2011-06-06
申请人： Hideki Nakamura , Sachiomi Mizuno
发明人： Hideki Nakamura , Sachiomi Mizuno
CPC分类号： B66B1/24 , B66B11/0045 , B66B11/0075 , B66B11/0206 , B66B11/0476 , B66B11/06 , B66B19/005 , B66B19/007 , Y10T29/49718
摘要： An elevator renovation method, which is capable of reducing a renovation period and enabling effective use of a space when an existing hydraulic elevator is renovated to a non-hydraulic elevator. The elevator renovation method involves renovating a hydraulic elevator in which a plunger provided integrally with a car is hydraulically driven to a non-hydraulic elevator. The elevator renovation method includes; providing a driving device for generating a driving force for raising the car; leaving the plunger so that the plunger can be raised and lowered inside an existing jack; and obtaining the non-hydraulic elevator by exerting the driving force of the driving device in a direction in which the plunger is moved up to raise the car.
摘要翻译： 一种电梯改造方法，其能够在将现有的液压电梯重新装配到非液压电梯时能够减少翻新期间并有效利用空间。 电梯改造方法涉及对液压升降机进行翻新，其中与汽车一体设置的柱塞液压驱动到非液压升降机。 电梯改造方法包括： 提供用于产生用于升高轿厢的驱动力的驱动装置; 离开柱塞，使得柱塞可以在现有的千斤顶内升高和降低; 并且通过沿着柱塞向上移动的方向施加驱动装置的驱动力来获得非液压升降机以升高轿厢。
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