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公开(公告)号：US5149477A
公开(公告)日：1992-09-22
申请号：US840634
申请日：1992-02-21
CPC分类号： H01F1/0578 , C08L63/00 , H02K1/02 , H02K15/03 , Y10S264/58
摘要： A process for producing resin bonded magnet structures is disclosed which includes the steps of: (a) adding a solid epoxy resin of at least one epoxy oligomer and a microcapsule which contains at least one liquid epoxy resin to a melt spun powder of a rare earth element-iron alloy to form a granulated intermediate material, wherein the epoxy oligomer has alcoholic hydroxyl groups in the molecular chain thereof and the solid epoxy resin has a softening temperature (Durran's melting point) of 65.degree. C. to 85.degree. C.; (b) mixing the granulated intermediate material with a powdered curing agent and a lubricant to form a compound; (c) forming a green body of a resin bonded magnet by compressing the compound, and then integrating the green body directly with a supporting member; and (d) curing the solid and liquid epoxy resins in the green body by application of heat to form a rigid structure of the resin bonded magnet integrated with the supporting member.
摘要翻译： 公开了一种生产树脂粘结磁体结构的方法，其包括以下步骤：（a）将至少一种环氧低聚物的固体环氧树脂和含有至少一种液体环氧树脂的微胶囊加入到稀土熔融纺丝粉末中 元素 - 铁合金以形成颗粒状中间体材料，其中环氧低聚物在其分子链中具有醇羟基，固体环氧树脂的软化温度（Durran的熔点）为65℃至85℃。 （b）将颗粒状中间材料与粉末状固化剂和润滑剂混合以形成化合物; （c）通过压缩化合物形成树脂粘结磁体的生坯，然后将生坯直接与支撑构件一体化; 和（d）通过加热来固化生坯中的固体和液体环氧树脂，以形成与支撑构件一体化的树脂粘结磁体的刚性结构。
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2.发明授权Method of making permanent magnet containing rare earth metal and ferrous component 失效制备含有稀土金属和成分组分的永磁体的方法
公开(公告)号：US5201962A
公开(公告)日：1993-04-13
申请号：US552683
申请日：1990-07-11
申请人： Fumitoshi Yamashita , Masami Wada
发明人： Fumitoshi Yamashita , Masami Wada
CPC分类号： B22F3/14 , B22F3/006 , H01F1/0576 , H01F41/0266
摘要： A method of manufacturing a permanent magnet which comprises applying one directional pressure and an electric current to an aggregate through a pair of electrodes to cause the aggregate to undergo a plastic deformation thereby to expand an axially projected surface area. The aggregate used is of a type containing alloy flakes interlocked with each other. The alloy flakes are those made of at least one rare earth metal and a ferrous component by the use of a melt quenching process.
摘要翻译： 一种永久磁铁的制造方法，其特征在于，通过一对电极对骨料施加1个定向压力和电流，使聚集体发生塑性变形，从而扩大轴向投影的表面积。 所使用的骨料是包含彼此互锁的合金薄片的类型。 合金薄片是通过使用熔融淬火工艺由至少一种稀土金属和亚铁组分制成的。
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公开(公告)号：US4981635A
公开(公告)日：1991-01-01
申请号：US316967
申请日：1989-02-28
CPC分类号： B22F3/225 , B22F1/0059 , C22C32/0094 , H01F1/0578 , H01F1/083 , H01F41/0266 , H02K15/03 , B22F2001/0066 , B22F2998/00 , Y10S264/58 , Y10S425/033
摘要： A method for producing a resin-bonded magnet, which includes steps of mixing a magnet element and microcapsules each of which contains at least one component of a thermally polymerizable resin composition as a binder component, mechanically breaking at least a part of the microcapsules during formation of a green compact comprising said resin composition and said magnet element to discharge the components of said resin composition from the capsules, and curing said resin to produce the resin-bonded magnet.
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公开(公告)号：US5464576A
公开(公告)日：1995-11-07
申请号：US875290
申请日：1992-04-29
申请人： Fumitoshi Yamashita , Masami Wada
发明人： Fumitoshi Yamashita , Masami Wada
CPC分类号： H02K15/03 , H01F1/0576 , H01F41/0266
摘要： A method of manufacturing an inorganic bonding type rapidly solidified magnet, which is formed by energizing and sintering, after an instantaneous mutual attractive force has been applied intermittently in accordance with the electromagnetic force upon a thin piece shaped rapidly solidified magnet powder in a mold. A thin piece shaped inorganic glass having a thermal expansion ratio 9.times.10.sup.-6 /.degree. C. or less is used as the inorganic coupling agent. The magnet of the present invention having a ring shape, is effective to improve reliability as a rotor magnet in consideration of size, safety, mechanical strength, etc. of the present magnet formed in a ring shape. The electric resistance of the magnet is 10.sup.-3 through 10.sup.-1 .OMEGA.cm and is desirable as a rotor magnet of a PWM driving brushless electric motor.
摘要翻译： 通过在模具中的薄片状快速凝固的磁体粉末上的电磁力间歇地施加瞬时相互吸引力之后通过激发和烧结形成的无机键合型快速凝固磁体的制造方法。 使用热膨胀率为9×10 -6 /℃以下的薄片状无机玻璃作为无机偶联剂。 考虑到形成为环状的本磁体的尺寸，安全性，机械强度等，具有环形的本发明的磁体对于提高作为转子磁体的可靠性是有效的。 磁体的电阻为10-3〜10-1ΩEGA·cm，作为PWM驱动无刷电动机的转子磁铁是理想的。
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5.发明授权Method for making a resin-bonded magnet comprising a ferromagnetic material and a resin composition 失效用于制造包含纤维素材料和树脂组合物的树脂粘结磁体的方法
公开(公告)号：US5100604A
公开(公告)日：1992-03-31
申请号：US632654
申请日：1990-12-26
IPC分类号： H01F1/08 , C08L101/00 , C08L101/02 , C22C38/00 , H01F1/057
CPC分类号： H01F1/0578
摘要： A method for making a resin-bonded magnet of flaky pieces of a ferromagnetic alloy and a resin composition which comprises providing composite granules obtained from a mixture of magnetically isotropic pieces of an Fe-B-R alloy, in which R is Nd and/or Pr, in the form of fine pieces and a resin composition comprised of at least one film-forming polymer having a functional group reactive with isocyanate groups and a blocked isocyanate. The granules are compression molded to obtain a green compact and subsequently thermally treated to allow reaction between the at least one film-forming polymer and the isocyanate by dissociation of the blocking groups by heating, thereby obtaining a resin-bonded magnet.
摘要翻译： 一种制造铁磁性合金薄片状的树脂粘结磁铁和树脂组合物的方法，该方法包括提供由R为Nd和/或Pr的Fe-BR合金的磁各向同性片的混合物获得的复合颗粒， 以细碎片的形式和由至少一种具有与异氰酸酯基反应的官能团的成膜聚合物和封端的异氰酸酯组成的树脂组合物。 将颗粒压塑以获得生坯，随后热处理，以通过加热解封闭基团，使至少一种成膜聚合物与异氰酸酯反应，从而获得树脂粘结磁体。
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6.发明授权Resin-bonded magnet comprising a specific type of ferromagnetic powder dispersed in a specific type of resin binder 失效包含分散在特定类型的树脂粘合剂中的特定类型的铁磁性粉末的树脂粘合磁体
公开(公告)号：US4689163A
公开(公告)日：1987-08-25
申请号：US937424
申请日：1986-12-03
CPC分类号： H01F1/0578 , C08K3/10
摘要： A resin-bonded magnet comprising particles of a melt-quenched ferromagnetic material of the formula, Fe-B-R, in which R represents Nd and/or Pr, and a binder resin dispersing the particles throughout the resin and fixing the particles. The binder resin comprises an oligomer having at least an alcoholic hydroxyl group and a block isocyanate with an active hydrogen-bearing compound. The resin-bonded magnet is preferably used in the from of a cylinder, ring or column having a defined outer diameter and a defined density when applied to permanent magnet motors.
摘要翻译： 一种树脂粘结磁体，其包含下式的熔融淬火铁磁材料Fe-B-R（其中R表示Nd和/或Pr）的颗粒，以及将颗粒分散在整个树脂中并固定颗粒的粘合剂树脂。 粘合剂树脂包含至少具有醇羟基的低聚物和具有活性含氢化合物的嵌段异氰酸酯。 当施加到永磁电动机上时，树脂粘结磁体优选地用于具有限定的外径和确定的密度的圆筒，环或柱。
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公开(公告)号：US5190684A
公开(公告)日：1993-03-02
申请号：US638437
申请日：1991-01-07
申请人： Fumitoshi Yamashita , Masami Wada
发明人： Fumitoshi Yamashita , Masami Wada
CPC分类号： H01F41/0253 , H01F1/0578
摘要： A resin bonded magnet which comprises a resinous binder and melt quenched magnetically isotropic ferromagnetic alloy particles having a coercive force of 8 to 12 KOe of the formula: Fe.sub.100-x-y-z Co.sub.x R.sub.y B.sub.z wherein R is at least one of Nd and Pr, x is an atomic % of not less than 15 and not more than 30, y is an atomic % of not less 10 and not more than 13 and z is an atomic % of not less than 5 and not more than 8; the ferromagnetic alloy particles uniformly dispersed in the binder.
摘要翻译： 一种树脂粘结磁体，其包含树脂粘合剂和具有下式的8至12KOe的矫顽力的熔融淬火的磁各向同性铁磁合金颗粒：Fe100-xy-zCoxRyBz其中R是Nd和Pr中的至少一个，x是原子 ％以上且30以下，y为10以上且13以下的原子％，z为5以上且8以下的原子％。 铁磁合金颗粒均匀分散在粘合剂中。
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8.发明授权
公开(公告)号：US5178691A
公开(公告)日：1993-01-12
申请号：US706233
申请日：1991-05-28
申请人： Fumitoshi Yamashita , Masami Wada
发明人： Fumitoshi Yamashita , Masami Wada
CPC分类号： H02K15/03 , B22F3/14 , H01F1/0576 , H01F41/0273
摘要： A process for producing a rare earth element-iron-boron anisotropic magnet that may generate a strong static magnetic field in vacant spaces of a magnetic circuit mounted in a motor is disclosed. The process comprises the steps of placing a billet produced of rapid solidification powder of a rare earth element-iron-boron alloy into a mold cavity, applying a primary pressure to said billet, while allowing a primary current to pass through said billet, applying to said billet a secondary pressure which is increased up to at least five times as much as the primary pressure, and applying a secondary current greater than the primary current through said billet, wherein the billet is finally subjected to plastic deformation at the temperature between the crystalline temperature and 750.degree. C.
摘要翻译： 公开了一种在安装在电动机中的磁路的空闲空间中产生强静态磁场的稀土元素 - 铁 - 硼各向异性磁体的制造方法。 该方法包括以下步骤：将由稀土元素 - 铁 - 硼合金的快速凝固粉末制成的坯料放入模腔中，向所述坯料施加初级压力，同时允许初级电流通过所述坯料，施加到 所述坯料的次级压力增加到初级压力的至少五倍，并且施加大于初级电流通过所述坯料的次级电流，其中坯料最终在晶体之间的温度下受到塑性变形 温度和750℃
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公开(公告)号：US5167915A
公开(公告)日：1992-12-01
申请号：US675737
申请日：1991-03-27
申请人： Fumitoshi Yamashita , Masami Wada , Takeichi Ota
发明人： Fumitoshi Yamashita , Masami Wada , Takeichi Ota
CPC分类号： H01F1/0576 , B22F1/0085 , Y10S264/58
摘要： A process for producing a rare earth-iron-boron magnet, which includes the steps of: (1) charging a melt spun powder of a rare earth-iron-boron magnet into at least one cavity, which is confined by a pair of electrodes inserted into a hole of an electrically non-conductive ceramic die; (2) subjecting the melt spun powder to a non-equilibrium plasma treatment, under a reduced atmosphere of 10.sup.-1 to 10.sup.-3 Torr, while applying a uniaxial pressure of 200 to 500 kgf/cm.sup.2 to the melt spun powder in the direction connecting the electrodes interposed between a pair of thermally insulating members, thereby fusing the melt spun powder; and (3) heating the fused melt spun powder to a temperature higher than or equal to its crystallization temperature by transferring a Joule's heat generated in the thermally insulating members by passing a current through the members to the melt spun powder thereby causing the plastic deformation of the melt spun powder to form a rare earth-iron-boron magnet.
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公开(公告)号：US5100485A
公开(公告)日：1992-03-31
申请号：US465190
申请日：1990-02-21
申请人： Fumitoshi Yamashita , Masami Wada
发明人： Fumitoshi Yamashita , Masami Wada
CPC分类号： H01F41/0273 , H01F1/0576
摘要： A method for manufacturing permanent magnets from a plurality of thin flakes of a rare earth-Fe-B alloy metal, comprising the steps ofsubjecting the thin flakes to a discharge electric field, the thin flakes being comprised of an R-Fe-B alloy metal; and R-Fe-B-M alloy metal; an R-Fe(Co)-B alloy metal comprising 11 to 18 atom % R, 4 to 11 atom % B, 30 atom % Co, the balance being Fe; and/or an R-Fe(Co)-M-B alloy metal,generating Joule heat on the contacting interfaces of the thin flakes by applying pressure to the gathered body of thin flakes and by supplying a current thereto, andbonding the gathered body integrally by making the thin flakes deform plastically in a warm state.R is one or more rare earth elements and M is one or more members selected from the group consisting of Si, Al, Nb, Zr, Hf, Mo, Ga, P and C. The thin flakes are in a nonequilibrium state such that the R.sub.2 Fe.sub.14 B phases and amorphous phases are coexistent.
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