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1. 发明授权

US6045629A Alloy used for production of a rare-earth magnet and method for producing the same 失效
标题翻译：用于生产稀土磁体的合金及其制造方法
公开(公告)号：US6045629A
公开(公告)日：2000-04-04
申请号：US18050
申请日：1998-02-03
申请人： Hiroshi Hasegawa , Shiro Sasaki , Yoichi Hirose , Shinya Fujito , Koichi Yajima
发明人： Hiroshi Hasegawa , Shiro Sasaki , Yoichi Hirose , Shinya Fujito , Koichi Yajima
IPC分类号： B22D13/02 , B22D13/10 , B22F1/00 , C22C1/04 , C22C33/02 , C22C38/00 , H01F1/053 , H01F1/057 , H01F1/055
CPC分类号： C22C1/0441 , H01F1/057 , H01F1/0571 , B22F2009/041 , B22F2998/10 , B22F2999/00
摘要： An alloy used for the production of a rare-earth magnet alloy, particularly the boundary-phase alloy in the two-alloy method is provided to improve the crushability.The alloy consists of (a) from 35 to 60% of Nd, Dy and/or Pr, 1% or less of B, and the balance being Fe, or (b) from 35 to 60% of Nd, Dy and/or Pr, 1% or less of B, and at least one element selected from the group consisting of 35% by weight or less of Co, 4% by weight or less of Cu, 3% by weight or less of Al and 3% by weight or less of Ga, and the balance being Fe. The total volume fraction of R.sub.2 Fe.sub.17 and R.sub.2 Fe.sub.14 B phases (Fe may be replaced with Cu, Co, Al or Ga) is 25% or more in the alloy. The average size of each of the R.sub.2 Fe.sub.17 and R.sub.2 Fe.sub.14 B phases is 20 .mu.m or less. The alloy can be produced by a centrifugal casting at an average accumulating rate of melt at 0.1 cm/second or less.
摘要翻译：提供了用于生产稀土类磁体合金的合金，特别是双合金方法中的边界相合金，以提高粉碎性。该合金由（a）35〜60％的Nd，Dy和/或Pr，1％以下的B，余量为Fe，（b）35〜60％的Nd，Dy和/ Pr，1％以下的B，以及选自Co，35重量％以下的Co，4重量％以下的Cu，3重量％以下的Al和3重量％以下的至少一种元素，重量或更少的Ga，余量为Fe。在合金中，R2Fe17和R2Fe14B相（Fe可以用Cu，Co，Al或Ga代替）的总体积分数为25％以上。 R2Fe17和R2Fe14B相的平均尺寸为20μm以下。该合金可以以0.1cm /秒以下的熔融物的平均累积速度通过离心铸造来制造。

2. 发明授权

US5963774A Method for producing cast alloy and magnet 失效
标题翻译：铸造合金和磁铁的生产方法
公开(公告)号：US5963774A
公开(公告)日：1999-10-05
申请号：US65564
申请日：1998-04-24
申请人： Shiro Sasaki , Hiroshi Hasegawa , Yoichi Hirose
发明人： Shiro Sasaki , Hiroshi Hasegawa , Yoichi Hirose
IPC分类号： C22C1/04 , C22C28/00 , H01F1/057 , B22F3/12
CPC分类号： H01F1/057 , C22C1/0441 , C22C28/00 , H01F1/0571 , H01F1/0577 , B22F2009/041 , B22F2998/00 , B22F2998/10
摘要： The magnetic properties of rare earth magnet are improved by means of forming a novel structure of the cast alloy used for the production of a rare earth magnet, which contains from 27 to 34% by weight of at least one rare earth element (R) including yttrium, from 0.7 to 1.4% by weight of boron, and the balance being essentially iron and, occasionally any other transition element, and comprises an R.sub.2 T.sub.14 B phase, an R-rich phase and optionally at least one ternary phase except for the R.sub.2 T.sub.14 B phase and the R-rich phase. The novel structure is that the volume fraction (V) in percentage of said R.sub.2 T.sub.14 B phase and said at least one ternary phase is more than 138-1.6r (with the proviso that r is the content of R), the average grain size of the R.sub.2 T.sub.14 B phases is from 10 to 100 .mu.m and, further, the average spacing between the adjacent R-rich phases is from 3 to 15 .mu.m. The novel structure can be formed by by means of feeding alloy melt onto a rotary casting roll, cooling in a temperature range of from melting point to 1000.degree. C. at a cooling rate of 300.degree. C. per second or more, and further cooling in a temperature range of from 800 to 600.degree. C. at a cooling rate of 1.degree. C./second or less.
摘要翻译：通过形成用于制备稀土磁体的铸造合金的新型结构，稀土类磁体的磁特性得到改善，该稀土类磁铁含有27〜34重量％的至少一种稀土元素（R），包括钇，0.7至1.4重量％的硼，余量基本上为铁，偶尔为任何其它过渡元素，并且包括R2T14B相，富R相和任选的至少一个三元相，除了R2T14B相和富R相。新结构是所述R2T14B相和所述至少一个三元相的百分比的体积分数（V）大于138-1.6r（条件是r是R的含量），平均粒径 R2T14B相为10〜100μm，相邻的富R相之间的平均间隔为3〜15μm。该新型结构可以通过将合金熔体供给到旋转铸辊上，以300℃/秒或更高的冷却速度在熔点为1000℃的温度范围内冷却，并进一步冷却在800〜600℃的温度范围内，以1℃/秒以下的冷却速度。

3. 发明授权

US06328825B1 Alloy used for production of a rare-earth magnet and method for producing the same 有权
标题翻译：用于生产稀土磁体的合金及其制造方法
公开(公告)号：US06328825B1
公开(公告)日：2001-12-11
申请号：US09314164
申请日：1999-05-19
申请人： Hiroshi Hasegawa , Shiro Sasaki , Yoichi Hirose , Shinya Fujito , Koichi Yajima
发明人： Hiroshi Hasegawa , Shiro Sasaki , Yoichi Hirose , Shinya Fujito , Koichi Yajima
IPC分类号： B22D1300
CPC分类号： H01F1/0571 , H01F1/0551
摘要： An alloy used for the production of a rare-earth magnet alloy, particularly the boundary-phase alloy in the two-alloy method is provided to improve the crushability. The Alloy consists of (a) from 35 to 60% of Nd, Dy and/or Pr, and the balance being Fe, or (b) from 35 to 60% of Nd, Dy and/or Pr, and at least one element selected from the group consisting of 35% by weight or less of Co, 4% by weight or less of Cu, 3% by weight or less of Al and 3% by weight or less of Ga, and the balance being Fe. The volume fraction of R2Fe17 phase (Fe may be replaced with Cu, Co, Al or Ga) is 25% or more in the alloy and the average size of an R2Fe17 phase is 20 &mgr;m or less. The alloy can be produced by a centrifugal casting at an average accumulating rate of melt at 0.1 cm/second or less.
摘要翻译：提供了用于生产稀土类磁体合金的合金，特别是双合金方法中的边界相合金，以提高粉碎性。该合金由（a）35〜60％的Nd，Dy和/或Pr，余量为Fe，或（b）35〜60％的Nd，Dy和/或Pr，以及至少一种元素选自Co占35重量％或更少，Cu为4重量％以下，Al为3重量％以下，Ga为3重量％以下，余量为Fe。在合金中，R2Fe17相（Fe可以被Cu，Co，Al或Ga代替）的体积分数为25％以上，R2Fe17相的平均粒径为20μm以下。该合金可以以0.1cm /秒以下的熔融物的平均累积速度通过离心铸造来制造。

4. 发明授权

US5948179A Alloy used for production of a rare-earth magnet and method for producing the same 失效
标题翻译：用于生产稀土磁体的合金及其制造方法
公开(公告)号：US5948179A
公开(公告)日：1999-09-07
申请号：US968005
申请日：1997-11-12
申请人： Hiroshi Hasegawa , Shiro Sasaki , Yoichi Hirose , Shinya Fujito , Koichi Yajima
发明人： Hiroshi Hasegawa , Shiro Sasaki , Yoichi Hirose , Shinya Fujito , Koichi Yajima
IPC分类号： B22D13/02 , B22D13/10 , C22C38/00 , H01F1/055 , H01F1/057 , H01F1/06
CPC分类号： H01F1/0551 , H01F1/055 , H01F1/0571
摘要： An alloy used for the production of a rare-earth magnet alloy, particularly the boundary-phase alloy in the two-alloy method is provided to improve the crushability.The Alloy consists of (a) from 35 to 60% of Nd, Dy and/or Pr, and the balance being Fe, or (b) from 35 to 60% of Nd, Dy and/or Pr, and at least one element selected from the group consisting of 35% by weight or less of Co, 4% by weight or less of Cu, 3% by weight or less of Al and 3% by weight or less of Ga, and the balance being Fe. The volume fraction of R.sub.2 Fe.sub.17 phase (Fe may be replaced with Cu, Co, Al or Ga) is 25% or more in the alloy and the average size of an R.sub.2 Fe.sub.17 phase is 20 .mu.m or less. The alloy can be produced by a centrifugal casting at an average accumulating rate of melt at 0.1 cm/second or less.
摘要翻译：提供了用于生产稀土类磁体合金的合金，特别是双合金方法中的边界相合金，以提高粉碎性。该合金由（a）35〜60％的Nd，Dy和/或Pr，余量为Fe，或（b）35〜60％的Nd，Dy和/或Pr，以及至少一种元素选自Co占35重量％或更少，Cu为4重量％以下，Al为3重量％以下，Ga为3重量％以下，余量为Fe。在合金中，R2Fe17相的体积分数（Fe可以被Cu，Co，Al或Ga代替）为25％以上，R2Fe17相的平均粒径为20μm以下。该合金可以以0.1cm /秒以下的熔融物的平均累积速度通过离心铸造来制造。

5. 发明授权

US5908513A Cast alloy used for production of rare earth magnet and method for producing cast alloy and magnet 失效
标题翻译：用于生产稀土磁体的铸造合金和用于生产铸造合金和磁体的方法
公开(公告)号：US5908513A
公开(公告)日：1999-06-01
申请号：US838784
申请日：1997-04-10
申请人： Shiro Sasaki , Hiroshi Hasegawa , Yoichi Hirose
发明人： Shiro Sasaki , Hiroshi Hasegawa , Yoichi Hirose
IPC分类号： C22C1/04 , C22C28/00 , H01F1/057
CPC分类号： H01F1/057 , C22C1/0441 , C22C28/00 , H01F1/0571 , H01F1/0577 , B22F2009/041 , B22F2998/00 , B22F2998/10
摘要： The magnetic properties of rare earth magnet are improved by means of forming a novel structure of the cast alloy used for the production of a rare earth magnet, which contains from 27 to 34% by weight of at least one rare earth element (R) including yttrium, from 07 to 1.4% by weight of boron, and the balance being essentially iron and, occasionally any other transition element, and comprises an R.sub.2 T.sub.14 B phase, an R-rich phase and optionally at least one ternary phase except for the R.sub.2 T.sub.14 B phase and the R-rich phase. The novel structure is that the volume fraction (V) in percentage of said R.sub.2 T.sub.14 B phase and said at least one ternary phase is more than 138-1.6r (with the proviso that r is the content of R), the average grain size of the R.sub.2 T.sub.14 B phases is from 10 to 100 .mu.m and, further, the average spacing between the adjacent R-rich phases is from 3 to 15 .mu.m. The novel structure can be formed by by means of feeding alloy melt onto a rotary casting roll, cooling in a temperature range of from melting point to 1000.degree. C. at a cooling rate of 300.degree. C. per second or more, and further cooling in a temperature range of from 800 to 600.degree. C. at a cooling rate of 1.degree. C./second or less.
摘要翻译：通过形成用于制备稀土磁体的铸造合金的新型结构，稀土类磁体的磁特性得到改善，该稀土类磁铁含有27〜34重量％的至少一种稀土元素（R），包括钇，从07至1.4重量％的硼，余量基本上为铁，偶尔为任何其它过渡元素，并且包含R2T14B相，富R相和任选的至少一个三元相，除了R2T14B相和富R相。新结构是所述R2T14B相和所述至少一个三元相的百分比的体积分数（V）大于138-1.6r（条件是r是R的含量），平均粒径 R2T14B相为10〜100μm，相邻的富R相之间的平均间隔为3〜15μm。该新型结构可以通过将合金熔体供给到旋转铸辊上，以300℃/秒或更高的冷却速度在熔点为1000℃的温度范围内冷却，并进一步冷却在800〜600℃的温度范围内，以1℃/秒以下的冷却速度。

6. 发明授权

US5725042A Method for producing hydrogen-absorbing alloy 失效
标题翻译：吸收合金的制造方法
公开(公告)号：US5725042A
公开(公告)日：1998-03-10
申请号：US773709
申请日：1996-12-24
申请人： Yoichi Hirose , Shiro Sasaki , Hiroshi Hasegawa , Uremu Hosono , Masahide Utsunomiya
发明人： Yoichi Hirose , Shiro Sasaki , Hiroshi Hasegawa , Uremu Hosono , Masahide Utsunomiya
IPC分类号： C22F1/10 , B22D13/02 , B22D25/04 , C01B3/00 , C22C1/00 , C22C19/00 , C22C19/03 , H01M4/24 , H01M4/38 , B22D13/12
CPC分类号： B22D13/023 , C01B3/0057 , H01M4/242 , H01M4/383 , Y02E60/327 , Y02P70/54 , Y10S420/90
摘要： The segregation in the hydrogen-absorbing alloy is decreased by a centrifugal casting which is devised in the present invention so that: a melt fed to the bottom portion of a cylindrical rotary mold solidifies during one rotation of the mold; and, the average depositing speed of melt is from approximately 0.005 to 0.1 cm/second.
摘要翻译：通过在本发明中设计的离心铸造，吸收合金中的偏析减少，使得：在模具的一次旋转期间，供给到圆筒形旋转模具的底部的熔体熔融; 并且熔体的平均沉积速度为约0.005至0.1cm /秒。

7. 发明申请

US20060033247A1 Refractory material for casting a rare-earth alloy and its production method as well as method for casting the rare-earth alloys 审中-公开
$Refractory material for casting a rare-earth alloy and its production method as well as method for casting the rare-earth alloys$
标题翻译：用于铸造稀土合金的耐火材料及其制备方法以及铸造稀土合金的方法
公开(公告)号：US20060033247A1
公开(公告)日：2006-02-16
申请号：US11201296
申请日：2005-08-11
申请人： Hiroshi Hasegawa , Nobuhiko Kawamura , Shiro Sasaki , Yoichi Hirose
发明人： Hiroshi Hasegawa , Nobuhiko Kawamura , Shiro Sasaki , Yoichi Hirose
IPC分类号： C21B7/04
CPC分类号： F27B5/04 , B22D13/102 , B22D41/02 , C04B35/10 , C04B35/48 , C21C5/44 , F27B5/13 , F27D3/145
摘要： Rare-earth alloy is cast into a sheet (6) or the like by using a tundish (3, 13). The refractory material of the tundish used for casting does not necessitate preheating for improving the flowability of the melt (2). The refractory material used essentially consists of 70 wt % or more of Al2O3 and 30 wt % or less of SiO2, or 70 wt % or more of ZrO2 and 30 wt % or less of one or more of Y2O3, Ce2O3, CaO, MgO, Al2O3, TiO2 and SiO2. The refractory material has 1 g/cm3 or less of bulk density, has 0.5 kcal/(mh° C.) or less of thermal conductivity in the temperature range of from 1200 to 1400° C., and has 0.5 wt % or less of ratio of ignition weight-loss under the heating condition of 1400° C. for 1 hour.
摘要翻译：通过使用中间包（3,13）将稀土合金铸造成板（6）等。用于铸造的中间包的耐火材料不需要预热以改善熔体（2）的流动性。使用的耐火材料基本上由70重量％以上的Al 2 O 3 3和30重量％以下的SiO 2或70 重量％以上的ZrO 2 2和30重量％以下的Y 2 O 3，Ce 2， CaO，MgO，Al 2 O 3，TiO 2和SiO 2， 2 。耐火材料具有1g / cm 3或更小的堆积密度，在1200至1400℃的温度范围内具有0.5kcal /（mh℃）或更低的热导率，并且在1400℃的加热条件下具有0.5重量％以下的点火失重比率1小时。

8. 发明授权

US06444048B1 Alloy for use in preparation of R-T-B-based sintered magnet and process for preparing R-T-B-based sintered magnet 有权
标题翻译：用于制备R-T-B系烧结磁体的合金和制备R-T-B系烧结磁体的方法
公开(公告)号：US06444048B1
公开(公告)日：2002-09-03
申请号：US09530274
申请日：2000-06-19
申请人： Hiroshi Hasegawa , Yoichi Hirose
发明人： Hiroshi Hasegawa , Yoichi Hirose
IPC分类号： H01F1057
CPC分类号： H01F1/0577 , B22F2998/10 , C22C1/0441 , C22C38/001 , C22C38/002 , B22F1/0003 , B22F3/1035
摘要： Processes for the preparation of a sintered alloy comprising R2Fe14B as a magnetic phase constituting a main phase include a binary alloy process wherein a main phase alloy having a lower R content than the above phase is mixed with a grain boundary phase alloy rich in R component and serving as a liquid phase in the sintering in order to prepare a mixture to be used as the starting material. The conventional main phase alloy has a structure comprising the R2Fe14B phase and, in addition, a large amount of an easily oxidizable lamella R-rich phase and a harmful dendrite &agr; phase. On the other hand, the main phase alloy of the invention has a low dendrite a phase content and a low lamella R-rich phase and contains a lamella &agr; Fe phase. This contributes to excellent oxidation resistance and improved properties of the magnet. The preparation of a sintered magnet by mixing the main phase alloy with the grain boundary phase alloy by the binary alloy method can reduce abnormal growth of crystal grains.
摘要翻译：制备包含R2Fe14B作为构成主相的磁性相的烧结合金的方法包括二元合金工艺，其中具有比上述相低的R含量的主相合金与富含R成分的晶界相合金混合，在烧结中用作液相以制备用作起始材料的混合物。常规的主相合金具有包含R2Fe14B相的结构，另外还含有大量容易氧化的薄层富R相和有害枝晶α相。另一方面，本发明的主相合金具有低枝状相含量和低薄片富R相，并含有薄片αFe相。这有助于优异的抗氧化性和改善的磁体性能。通过二次合金法将主相合金与晶界相合金混合制备烧结磁体可以减少晶粒的异常生长。

9. 发明授权

US07264683B2 Centrifugal casting method, centrifugal casting apparatus, and cast alloy produced by same 有权
标题翻译：离心铸造方法，离心铸造装置和由其制造的铸造合金
公开(公告)号：US07264683B2
公开(公告)日：2007-09-04
申请号：US10919353
申请日：2004-08-17
申请人： Hiroshi Hasegawa , Masahide Utsunomiya , Uremu Hosono , Yoichi Hirose
发明人： Hiroshi Hasegawa , Masahide Utsunomiya , Uremu Hosono , Yoichi Hirose
IPC分类号： H01F1/057
CPC分类号： B22D13/023 , B22D13/02 , B22D13/107 , B82Y25/00 , H01F1/057 , H01F1/0575 , H01F1/0577 , H01F1/0579 , H01F41/0273
摘要： The present invention relates to a casting method which employs rapid solidification of metal, rare-earth metal or the like, as well as to a casting apparatus and a cast alloy. A centrifugal casting method includes the steps of pouring a molten material onto a rotary body; sprinkling the molten material by the effect of rotation of the rotary body; and causing the sprinkled molten material to be deposited and to solidify on the inner surface of a rotating cylindrical mold. The axis of rotation of the rotary body and the axis of rotation of the cylindrical mold are caused not to run parallel to each other. The centrifugal casting method can attain a decrease in average deposition rate. As a result, generation of the dendritic αFe phase or generation of a segregation phase of Mn or the like is suppressed, thereby realizing a high-performance R-T-B-type rare-earth magnet alloy.
摘要翻译：本发明涉及使用金属，稀土金属等的快速固化以及铸造装置和铸造合金的铸造方法。离心铸造方法包括将熔融材料倒入旋转体的步骤; 通过旋转体的旋转来喷洒熔融材料; 并使喷洒的熔融材料沉积并固化在旋转的圆柱形模具的内表面上。旋转体的旋转轴线和圆筒状模具的旋转轴线不会彼此平行地延伸。离心铸造法可以降低平均沉积速率。结果，抑制了树枝状αFe相的产生或Mn等的析出相的产生，从而实现了高性能的R-T-B型稀土类磁体合金。

10. 发明申请

US20050011588A1 Centrifugal casting method, centrifugal casting apparatus, and cast alloy produced by same 有权
标题翻译：离心铸造方法，离心铸造装置和由其制造的铸造合金
公开(公告)号：US20050011588A1
公开(公告)日：2005-01-20
申请号：US10919353
申请日：2004-08-17
申请人： Hiroshi Hasegawa , Masahide Utsunomiya , Uremu Hosono , Yoichi Hirose
发明人： Hiroshi Hasegawa , Masahide Utsunomiya , Uremu Hosono , Yoichi Hirose
IPC分类号： B22D13/02 , B22D13/10 , H01F1/057 , H01F41/02
CPC分类号： B22D13/023 , B22D13/02 , B22D13/107 , B82Y25/00 , H01F1/057 , H01F1/0575 , H01F1/0577 , H01F1/0579 , H01F41/0273
摘要： The present invention relates to a casting method which employs rapid solidification of metal, rare-earth metal or the like, as well as to a casting apparatus and a cast alloy. A centrifugal casting method includes the steps of pouring a molten material onto a rotary body; sprinkling the molten material by the effect of rotation of the rotary body; and causing the sprinkled molten material to be deposited and to solidify on the inner surface of a rotating cylindrical mold. The axis of rotation of the rotary body and the axis of rotation of the cylindrical mold are caused not to run parallel to each other. The centrifugal casting method can attain a decrease in average deposition rate. As a result, generation of the dendritic αFe phase or generation of a segregation phase of Mn or the like is suppressed, thereby realizing a high-performance R-T-B-type rare-earth magnet alloy.
摘要翻译：本发明涉及使用金属，稀土金属等的快速固化以及铸造装置和铸造合金的铸造方法。离心铸造方法包括将熔融材料倒入旋转体的步骤; 通过旋转体的旋转来喷洒熔融材料; 并使喷洒的熔融材料沉积并固化在旋转的圆柱形模具的内表面上。旋转体的旋转轴线和圆筒状模具的旋转轴线不会彼此平行地延伸。离心铸造法可以降低平均沉积速率。结果，抑制了树枝状αFe相的产生或Mn等的析出相的产生，从而实现了高性能的R-T-B型稀土类磁体合金。

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