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1. 发明授权

US06461565B2 Method of pressing rare earth alloy magnetic powder 有权
公开(公告)号：US06461565B2
公开(公告)日：2002-10-08
申请号：US09801096
申请日：2001-03-08
申请人： Koki Tokuhara , Shuhei Okumura , Akiyasu Oota
发明人： Koki Tokuhara , Shuhei Okumura , Akiyasu Oota
IPC分类号： B22F312
CPC分类号： C22C1/0441 , B22F3/02 , B22F2998/10 , B22F2999/00 , B30B15/304 , H01F1/0556 , H01F1/0576 , H01F41/026 , H01F41/0266 , B22F9/082 , B22F9/04 , B22F3/10 , B22F2201/03 , B22F3/1007
摘要： A green compact of a rare earth alloy magnetic powder is made by pressing the powder. The powder is pressed within an air environment that has a temperature controlled at 30° C. or less and a relative humidity controlled at 65% or less.

2. 发明授权

US06696015B2 Method for producing rare-earth magnet 有权
标题翻译：稀土磁铁的制造方法
公开(公告)号：US06696015B2
公开(公告)日：2004-02-24
申请号：US09846783
申请日：2001-05-02
申请人： Koki Tokuhara , Akiyasu Oota , Tsuyoshi Wada , Katsumi Okayama , Tomoiku Ohtani , Kunitoshi Kanno
发明人： Koki Tokuhara , Akiyasu Oota , Tsuyoshi Wada , Katsumi Okayama , Tomoiku Ohtani , Kunitoshi Kanno
IPC分类号： B22F312
CPC分类号： H01F41/0253 , B22F3/1007 , B22F2998/00 , F27B9/028 , F27B21/00 , F27D5/0068 , F27D2001/1891 , H01F1/0577 , C22C1/0441
摘要： The method for producing a rare-earth sintered magnet of the present invention includes the steps of: compacting alloy powder for the rare-earth sintered magnet to form a green compact; loading the green compact into a case having a structure restricting a path through which gas flows between the outside and inside of the case, and placing a gas absorbent at least near the path; and sintering the green compact by heating the case including the green compact inside in a decompressed atmosphere.
摘要翻译：本发明的稀土类烧结磁体的制造方法包括以下步骤：将稀土类烧结磁体的合金粉末压制成生坯; 将生坯压装成具有限制气体在壳体的外部和内部之间流动的路径的结构的壳体，并且至少在路径附近放置气体吸收剂; 并且通过在减压气氛中将包括生坯的壳体加热到内部来烧结生坯。

3. 发明授权

US06247660B1 Process for hydrogen-pulverizing a rare earth metal-based magnetic material, and hydrogen-pulverizing case 有权
标题翻译：稀土金属类磁性材料的氢粉碎工艺和氢粉碎工艺
公开(公告)号：US06247660B1
公开(公告)日：2001-06-19
申请号：US09413353
申请日：1999-10-06
申请人： Yasuhiko Imai , Koki Tokuhara , Katsumi Okayama , Akiyasu Oota , Akihito Tsujimoto
发明人： Yasuhiko Imai , Koki Tokuhara , Katsumi Okayama , Akiyasu Oota , Akihito Tsujimoto
IPC分类号： B02C1912
CPC分类号： B01J19/02 , B01J2208/00132 , B01J2219/00081 , B01J2219/0236 , B01J2219/0277 , B22F9/023 , B22F2998/00 , H01F1/0573 , B22F1/0055
摘要： A case for hydrogen-pulverizing a rare earth metal-based magnetic material is disclosed. The case includes a case body which is formed of a material having a heat conductivity of 1 W/cm·deg or more. At least one heat-transferring/releasing member is mounted in the case body and formed of a material having a heat conductivity of 1 W/cm·deg or more. The magnetic material is accommodated in the case and subjected to a hydrogen pulverization with hydrogen occluded in the magnetic material. Thus, the heating and cooling of the magnetic material can be performed in a short time, thereby achieving the pulverization of the magnetic material with an extremely excellent
摘要翻译：公开了一种用于粉碎稀土金属基磁性材料的情况。壳体包括由导热率为1W / cm·℃以上的材料形成的壳体。至少一个传热/释放构件安装在壳体中，并由导热率为1W / cm·℃以上的材料形成。将磁性材料容纳在壳体中，并用吸入磁性材料中的氢气进行氢气粉碎。因此，可以在短时间内进行磁性材料的加热和冷却，从而以非常优异的方式实现磁性材料的粉碎

4. 发明授权

US06464931B1 Case for use in sintering process to produce rare-earth magnet, and method for producing rare-earth magnet 有权
标题翻译：用于制造稀土磁体的烧结工艺的情况以及稀土类磁体的制造方法
公开(公告)号：US06464931B1
公开(公告)日：2002-10-15
申请号：US09517493
申请日：2000-03-02
申请人： Akiyasu Oota , Tsuyoshi Wada , Katsumi Okayama
发明人： Akiyasu Oota , Tsuyoshi Wada , Katsumi Okayama
IPC分类号： B22F312
CPC分类号： F27B21/00 , B22F3/003 , B22F2003/1042 , F27B9/028 , F27D1/0006 , F27D5/00 , F27D5/0068 , F27D2001/1891 , H01F1/0557 , H01F1/0577 , H01F41/0253
摘要： A case according to the present invention is used in a sintering process to produce a rare-earth magnet. The case includes: a body with an opening; a door for opening or closing the opening of the body; and supporting rods for horizontally sliding a sintering plate, on which green compacts of rare-earth magnetic alloy powder are placed. The supporting rods are secured inside the body. At least the body and the door are made of molybdenum.
摘要翻译：根据本发明的情况用于制造稀土类磁铁的烧结工序。案件包括：一个开放的身体; 用于打开或关闭身体开口的门; 以及用于水平滑动烧结板的支撑杆，其上放置有稀土磁性合金粉末的生坯。支撑杆固定在体内。至少身体和门都是用钼制成的。

5. 发明授权

US06736343B2 Milling apparatus and milling method 有权
标题翻译：铣削设备和铣削方法
公开(公告)号：US06736343B2
公开(公告)日：2004-05-18
申请号：US10190678
申请日：2002-07-09
申请人： Akiyasu Oota , Akihito Tsujimoto , Katsumi Okayama
发明人： Akiyasu Oota , Akihito Tsujimoto , Katsumi Okayama
IPC分类号： B02C2500
CPC分类号： B02C19/06 , B02C23/16 , B02C25/00
摘要： A milling apparatus comprises a mill for milling of an object material such as a rare-earth alloy. The mill includes a mill main body. A classifying rotor for classification of a powder is provided inside and at an upper portion of the mill main body. The mill main body has an outer circumference provided with three leg portions spaced equally from each other. Each of the leg portions supports the mill main body at a position above the center of gravity of the mill. Each of the leg portions is provided with a weight detector for detection of a weight of the mill holding the object material remaining in the mill. A flexible pipe is provided between the mill and a raw material feeder for supply of the object material to the mill. Another flexible pipe is provided between the mill and a collecting tank for collection of the powder. A controlling portion controls an amount of supply of the object material to the mill by a proportional-plus-integral-plus-derivative control based on a result of the detection by the weight detectors, for maintenance of a constant amount of the object material present in the mill.
摘要翻译：研磨装置包括用于研磨诸如稀土类合金的物体材料的研磨机。磨机包括磨机主体。用于分级粉末的分级转子设置在磨机主体的内部和上部。磨机主体具有设置有彼此间隔开的三个腿部的外周。每个腿部在轧机的重心上方的位置处支撑轧机主体。每个腿部设置有用于检测保持在研磨机中剩余的物体材料的磨机的重量的重量检测器。在轧机和原料供料器之间设置有柔性管，用于将物料供给到轧机。在磨机和用于收集粉末的收集罐之间设置另一个柔性管。控制部分通过基于重量检测器的检测结果的比例加积分加微分控制来控制物料对磨机的供给量，以维持一定量的存在的物体材料在磨坊。

6. 发明授权

US06743394B2 Case for use in sintering process to produce rare-earth magnet, and method for producing rare-earth magnet 有权
标题翻译：用于制造稀土磁体的烧结工艺的情况以及稀土类磁体的制造方法
公开(公告)号：US06743394B2
公开(公告)日：2004-06-01
申请号：US10173786
申请日：2002-06-19
申请人： Akiyasu Oota , Tsuyoshi Wada , Katsumi Okayama
发明人： Akiyasu Oota , Tsuyoshi Wada , Katsumi Okayama
IPC分类号： F27B728
CPC分类号： F27B21/00 , B22F3/003 , B22F2003/1042 , F27B9/028 , F27D1/0006 , F27D5/00 , F27D5/0068 , F27D2001/1891 , H01F1/0557 , H01F1/0577 , H01F41/0253
摘要： A case according to the present invention is used in a sintering process to produce a rare-earth magnet. The case includes: a body with an opening; a door for opening or closing the opening of the body; and supporting rods for horizontally sliding a sintering plate, on which green compacts of rare-earth magnetic alloy powder are placed. The supporting rods are secured inside the body. At least the body and the door are made of molybdenum.
摘要翻译：根据本发明的情况用于制造稀土类磁铁的烧结工序。案件包括：一个开放的身体; 用于打开或关闭身体开口的门; 以及用于水平滑动烧结板的支撑杆，其上放置有稀土磁性合金粉末的生坯。支撑杆固定在体内。至少身体和门都是用钼制成的。

7. 发明授权

US06464386B1 Method and apparatus for mixing powder with liquid 有权
标题翻译：粉末与液体混合的方法和设备
公开(公告)号：US06464386B1
公开(公告)日：2002-10-15
申请号：US09513085
申请日：2000-02-25
申请人： Akiyasu Oota , Akihito Tsujimoto , Katsumi Okayama
发明人： Akiyasu Oota , Akihito Tsujimoto , Katsumi Okayama
IPC分类号： B01F1100
CPC分类号： B22F7/062 , B01F3/1228 , B01F9/0016 , B01F9/02 , B01F11/0002 , B01F15/00779 , B01F15/0201 , B01F15/0254 , B01F15/0267 , B01F15/0295 , B01F15/0298 , B01F2009/0059 , B01F2009/0065 , B01F2015/0221 , B22F2999/00 , C22C29/08
摘要： A mixing apparatus comprises a mixing container having an opening. The mixing container is hollow cylindrical, having a length l.5˜2.5 times an inner diameter. The mixing container is loaded with a powder such as a metallurgical powder to 30 % ˜80% of the capacity of the mixing container. The mixing container is tilted at 10 degrees ˜40 degrees off the horizontal level and rotated while a liquid such as a lubricant is supplied to the powder in the mixing container from a nozzle portion. The nozzle portion is constituted to prevent the liquid from discharging when the supply of the liquid is not needed. After the liquid is supplied, the nozzle portion is evacuated from the mixing container while the mixing container is rocked for mixing the powder with the liquid. Thereafter, the mixing container is tilted to position the opening at a downward location, and the mixing container is given rotation and impact while unloading a mix from within the mixing container.
摘要翻译：混合装置包括具有开口的混合容器。混合容器为中空圆柱形，长度为内径的1.5〜2.5倍。混合容器中装有诸如冶金粉末的粉末至混合容器的容量的30％〜80％。混合容器从水平面倾斜10度〜40度，并且在从喷嘴部向混合容器中的粉末供给诸如润滑剂的液体时旋转。喷嘴部分构成为当不需要液体的供应时防止液体排出。在供应液体之后，将喷嘴部分从混合容器中排出，同时摇动混合容器以将粉末与液体混合。此后，将混合容器倾斜以将开口定位在向下的位置，并且在从混合容器中卸下混合物的同时给予混合容器旋转和冲击。

8. 发明授权

US06474576B1 Milling apparatus and milling method 有权
公开(公告)号：US06474576B1
公开(公告)日：2002-11-05
申请号：US09522472
申请日：2000-03-09
申请人： Akiyasu Oota , Akihito Tsujimoto , Katsumi Okayama
发明人： Akiyasu Oota , Akihito Tsujimoto , Katsumi Okayama
IPC分类号： B02C1912
CPC分类号： B02C19/06 , B02C23/16 , B02C25/00
摘要： A milling apparatus comprises a mill for milling of an object material such as a rare-earth alloy. The mill includes a mill main body. A classifying rotor for classification of a powder is provided inside and at an upper portion of the mill main body. The mill main body has an outer circumference provided with three leg portions spaced equally from each other. Each of the leg portions supports the mill main body at a position above the center of gravity of the mill. Each of the leg portions is provided with a weight detector for detection of a weight of the mill holding the object material remaining in the mill. A flexible pipe is provided between the mill and a raw material feeder for supply of the object material to the mill. Another flexible pipe is provided between the mill and a collecting tank for collection of the powder. A controlling portion controls an amount of supply of the object material to the mill by a proportional-plus-integral-plus-derivative control based on a result of the detection by the weight detectors, for maintenance of a constant amount of the object material present in the mill.

9. 发明授权

US06403024B1 Hydrogen pulverizer for rare-earth alloy magnetic material powder using the pulverizer, and method for producing magnet using the pulverizer 有权
标题翻译：使用粉碎机的稀土合金磁性材料粉末的氢粉碎机和使用粉碎机的磁体制造方法
公开(公告)号：US06403024B1
公开(公告)日：2002-06-11
申请号：US09503738
申请日：2000-02-15
申请人： Akiyasu Oota , Akihito Tsujimoto , Katsumi Okayama
发明人： Akiyasu Oota , Akihito Tsujimoto , Katsumi Okayama
IPC分类号： B22F312
CPC分类号： H01F1/0573 , B22F9/023 , C22C1/0441
摘要： A hydrogen pulverizer according to the present invention is an apparatus for subjecting a rare-earth alloy magnetic material to a hydrogen pulverization process. The apparatus includes: a hermetically sealable hydrogen furnace, which includes a furnace body with an opening and a cap for closing the opening; a loading chamber for temporarily enclosing the rare-earth alloy magnetic material when the rare-earth alloy magnetic material, which has been pulverized with hydrogen, is unloaded from the furnace body through the opening; and an inert gas supply for supplying an inert gas into the loading chamber.
摘要翻译：本发明的氢粉碎机是将稀土类合金磁性材料进行氢粉碎处理的装置。该装置包括：气密密封的氢炉，其包括具有开口的炉体和用于封闭开口的盖; 当用氢气粉碎的稀土合金磁性材料通过开口从炉体卸载时，用于临时封闭稀土合金磁性材料的装载室; 以及用于将惰性气体供应到装载室中的惰性气体供应。

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