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。

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。

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。

公开(公告)号：US06797081B2

公开(公告)日：2004-09-28

申请号：US10111634

申请日：2002-04-26

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： B22D1300

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 &agr;Fe 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。

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。

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。

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。

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。

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。

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。