专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

11. 发明专利

JP2013084804A Manufacturing method of magnetic powder for forming sintered compact of rare earth magnet precursor 有权
标题翻译：用于形成稀土磁铁前驱体的烧结制备磁粉的制造方法
公开(公告)号：JP2013084804A
公开(公告)日：2013-05-09
申请号：JP2011224115
申请日：2011-10-11
申请人： Toyota Motor Corp , トヨタ自動車株式会社
发明人： SAKUMA NORITSUGU , KISHIMOTO HIDESHI , MIYAMOTO NORITAKA , KATO AKIRA , MANABE AKIRA , ICHIKIZAKI DAISUKE , SHOJI TETSUYA , HARAKAWA SHOICHI
IPC分类号： H01F41/02 , B22F1/00 , C22C33/02 , C22C38/00 , H01F1/057 , H01F1/08
CPC分类号： H01F1/20 , B22F9/04 , B22F2009/048 , C22C33/0278 , C22C38/002 , C22C38/005 , C22C38/10 , C22C2202/02 , H01F1/0571 , H01F1/0577
摘要： PROBLEM TO BE SOLVED: To provide a manufacturing method of magnetic powder for forming a sintered compact of a rare earth magnet precursor in which the magnetic power without a coarse particle in a composition is exquisitely and efficiently screened to allow manufacturing the magnetic powder including the composition consisting of optimum nano-sized crystal grains.SOLUTION: There is provided a manufacturing method of a magnetic powder p for forming a sintered compact S which comprises crystal grains which are a Nd-Fe-B based main phase of a nanocrystal composition and a grain boundary phase, and is a precursor of a rare earth magnet which is formed by applying hot plastic processing to the sintered compact S to add anisotropy and diffusing an alloy in it for improving coercive field strength. In the manufacturing method, a molten metal is discharged on a cooling roller R to produce a quenched ribbon B, and the quenched ribbon is smashed into a size range between 50 μm and 1000 μm to produce the magnetic powder within a mass range between 0.0003 mg and 0.3 mg. The magnetic powder within the mass range is checked whether the magnetic powder is attracted to a magnet whose surface magnetic flux density is 2 mT or less. The magnetic powder p that is not attracted, is selected to be the magnetic powder to form the sintered compact S.
摘要翻译：解决的问题：提供一种用于形成稀土磁体前体的烧结体的磁性粉末的制造方法，其中组合物中没有粗颗粒的磁力被精确和有效地筛选以允许制造磁粉包括由最佳纳米级晶粒组成的组合物。解决方案：提供了一种用于形成烧结体S的磁性粉末p的制造方法，该烧结体S包括作为纳米晶体组成的Nd-Fe-B系主相和晶界相的晶粒，并且为通过对烧结体S进行热塑性加工而形成的稀土类磁体的前体，以增加其各向异性并扩散其中的合金以提高矫顽场强度。在制造方法中，将熔融金属排出到冷却辊R上，制成淬火带B，将淬火带粉碎成50μm〜1000μm的范围，制成磁铁粉末的质量范围为0.0003mg 和0.3mg。检查质量范围内的磁粉是否磁性粉末被吸引到表面磁通密度为2mT以下的磁体。未被吸引的磁性粉末p被选择为磁性粉末以形成烧结体S.版权所有（C）2013，JPO＆INPIT

12. 发明专利

JP2013145832A Method for manufacturing rare earth magnet 有权
标题翻译：制造稀土磁铁的方法
公开(公告)号：JP2013145832A
公开(公告)日：2013-07-25
申请号：JP2012006165
申请日：2012-01-16
申请人： Toyota Motor Corp , トヨタ自動車株式会社
发明人： MIYAMOTO NORITAKA , HAGA KAZUAKI , SHOJI TETSUYA , OMURA SHINYA , ICHIKIZAKI DAISUKE , MANABE AKIRA , NAGASHIMA SHINYA
IPC分类号： H01F41/02 , C22C28/00 , C22C33/02 , C22C38/00 , H01F1/057 , H01F1/08
摘要： PROBLEM TO BE SOLVED: To provide a method for manufacturing a rare earth magnet, capable of manufacturing a rare earth magnet excellent in squareness and high in maximum energy product.SOLUTION: A method for manufacturing a rare earth magnet includes: a first step of obtaining selected magnetic powder Q by removing magnetic powder having a particle size of less than 50 μm among magnetic powder comprising a main phase of an RE-T-B system (RE represents at least one of Nd, Pr and Y, and T represents Fe or one obtained by substituting a part of Fe with Co) and a grain boundary phase around the main phase, mixing modified alloy powder T comprising an RE-M alloy (M represents a transition metal element or a typical metal element, and RE may comprise RE1-RE2 where RE1 and RE2 represent at least one of Nd, Pr and Y) having a melting point of 700°C or below with the selected magnetic powder Q, and performing hot press working to manufacture a compact S; and a second step of subjecting the compact S to a hot plasticity processing to manufacture a rare earth magnet C.
摘要翻译：要解决的问题：提供一种制造稀土磁铁的方法，该方法能够制造出具有优异的矩形性和最高能量产品的稀土磁体。解决方案：一种制造稀土磁体的方法包括：第一步骤：通过除去包含RE-TB体系的主相的磁性粉末（RE表示Nd，Pr和Y中的至少一种），并且T表示Fe或获得的一种的磁性粉末，除去粒径小于50μm的磁性粉末的选定的磁性粉末Q 通过用Co的一部分替代Fe和在主相周围的晶界相，混合包含RE-M合金的改性合金粉末T（M表示过渡金属元素或典型的金属元素，RE可以包括RE1-RE2 其中RE1和RE2代表Nd，Pr和Y中的至少一种），所选择的磁性粉末Q具有700℃或更低的熔点，并进行热压加工以制造压块S; 以及对压坯S进行热塑性加工以制造稀土磁体C的第二步骤。

13. 发明专利

JP2010267790A Method of manufacturing permanent magnet 审中-公开
标题翻译：制造永磁体的方法
公开(公告)号：JP2010267790A
公开(公告)日：2010-11-25
申请号：JP2009117713
申请日：2009-05-14
申请人： Toyota Motor Corp , トヨタ自動車株式会社
发明人： MIYAMOTO NORITAKA , MANABE AKIRA , NAKAMURA KENJI , OMURA SHINYA
IPC分类号： H01F41/02 , H02K15/03
CPC分类号： Y02T10/641
摘要： PROBLEM TO BE SOLVED: To provide a method of manufacturing a permanent magnet which is improved in at least one of magnetic flux density and coercive force as the magnetic characteristics of the permanent magnet, and which is never degraded in those characteristics.
SOLUTION: The method of manufacturing the permanent magnet includes the first step of preparing the permanent magnet E having the metal composition constituted of a main phase S and a grain boundary phase R and exposing an active surface K of the permanent magnet E under an oxygen-free or low oxygen atmosphere, and the second step of coating the active surface K with a metal film C under the oxygen-free or low oxygen atmosphere, diffusing a first metal component forming the metal film C into the grain boundary phase R, and heating it to form a grain boundary phase of a metal alloy consisting of a second metal component which has ever formed the grain boundary phase R and the first metal component.
COPYRIGHT: (C)2011,JPO&INPIT
摘要翻译：解决的问题：提供一种制造永磁体的方法，所述永磁体的磁通密度和矫顽力中的至少一个作为永久磁铁的磁特性得到改善，并且在这些特性中不会降低。解决方案：制造永磁体的方法包括制备具有由主相S和晶界相R构成的金属组成的永磁体E的第一步骤，并将永磁体E的有效面K暴露在无氧或低氧气氛，第二步是在无氧或低氧气氛下用金属膜C涂覆活性表面K，将形成金属膜C的第一金属成分扩散到晶界相R 加热，形成由形成了晶界相R的第二金属成分和第一金属成分构成的金属合金的晶界相。版权所有（C）2011，JPO＆INPIT

14. 发明专利

JP2004223608A Method of die casting spheroidal graphite cast iron 审中-公开
公开(公告)号：JP2004223608A
公开(公告)日：2004-08-12
申请号：JP2003017834
申请日：2003-01-27
申请人： Aisin Takaoka Ltd , Toyota Motor Corp , アイシン高丘株式会社 , トヨタ自動車株式会社
发明人： OTAKE KAZUSANE , MANABE AKIRA , HIBINO YOSHIHIRO , SATO TAKAHIRO , NIWA KAZUFUMI
IPC分类号： B22D27/20 , B22C7/00 , B22C9/06 , B22D17/22 , B22D27/04 , B22D27/18 , C21C1/10
CPC分类号： B22C9/061 , B22D17/22 , C21C1/10
摘要： PROBLEM TO BE SOLVED: To provide a method of die casting spheroidal graphite cast iron able to prevent formation of chill crystals to thereby crystallize fine spheroidal graphite and simultaneously prevent the formation of internal defects.
SOLUTION: The method includes the steps of: preparing a die formed with a heat insulation layer at inside walls of a cavity; filling molten metal having a composition of the spheroidal graphite cast iron through a runner into the cavity; closing the runner so as to seal the cavity right before the molten metal in the cavity starts to solidify; and allowing the molten metal to solidify by the action of the inside pressure caused by crystallization of the spheroidal graphite in the sealed cavity.
COPYRIGHT: (C)2004,JPO&NCIPI

15. 发明专利

DE3564980D1 VALVE-SEAT INSERT FOR INTERNAL COMBUSTION ENGINES AND ITS PRODUCTION 未知
公开(公告)号：DE3564980D1
公开(公告)日：1988-10-20
申请号：DE3564980
申请日：1985-06-12
申请人： SUMITOMO ELECTRIC INDUSTRIES , TOYOTA MOTOR CORP
发明人： KUROISHI NOBUHITO C O ITAMI WO , MOTOOKA NAOKI C O ITAMI WORKS , SUGANUMA TETSUYA , MANABE AKIRA
IPC分类号： B22F7/06 , C22C33/02 , F01L3/22 , F02B1/04 , F01L3/04 , C22F3/00 , C22F3/02
摘要： A valve-seat insert for internal combustion engines comprises a double-layered, sintered alloy composed of a valve-seat layer on which a valve is seated, and a base layer integrated with the valve-seat layer and adapted to be seated in a cylinder head of an engine. The valve-seat layer is composed of a sintered alloy of a high heat resistance and a high wear resistance having a composition comprising, by weight, 4 to 8% Co, 0.6 to 1.6% Cr, 4 to 8% Mo, 1 to 3% Ni, 0.3 to 1.5% C, 0.2 to 0.6% Ca, and the balance of Fe and inevitable impurities, the additives, Co, Cr and Mo being present mainly in a form of a Co-Cr-Mo hard alloy and a hard Fe-Mo alloy dispersed in the Fe matrix. The base layer is composed of a sintered alloy of a higher heat resistance and a higher creep resistance than those of the valve-seat layer and having a composition comprising, by weight, 11 to 15% Cr, 0.4 to 2.0% Mo, 0.05 to 0.3% C, and the balance of Fe and inevitable impurities. At least the valve-seat layer of the double-layered, sintered alloy is being fusion-infiltrated with copper.

16. 发明专利

JP2001040458A WEAR-RESISTANT SINTERED ALLOY AND MANUFACTURE THEREFOR 失效
公开(公告)号：JP2001040458A
公开(公告)日：2001-02-13
申请号：JP21505799
申请日：1999-07-29
申请人： TOYOTA MOTOR CORP , NIPPON FUNMATSU GOKIN KK
发明人： ANDO KIMIHIKO , MANABE AKIRA , AKIMOTO NAOMICHI , MAEJIMA TAKASHI , KOEDA KATSUMASA , ISHIHARA NAOTOSHI
IPC分类号： F01L3/02 , B22F3/26 , B22F5/00 , C22C33/02 , C22C38/00 , C22C38/56
摘要： PROBLEM TO BE SOLVED: To provide a wear-resistant sintered alloy having an improved wear resistance and a suppressed abrasiveness to a mating surface and a manufacturing method therefor. SOLUTION: The whole composition of a wear-resistant sintered alloy is, by wt., 1.5 to 7.0% Co, 2 to 15% Mo, 1 to 8% Cr, 1 to 8% Ni, 0.5 to 7% W, 0.8 to 2.5% C, 0.01 to 2% Si, and the balance Fe with inevitable impurities. The base composition is 2 to 15% Co, 2 to 10% Mo, 20% to 28% Mo, 10 to 30% Cr, 8 to 30% Ni, 10 to 25% W, 0.5 to 5.0% C, 0.5 to 5.0% Si, and the balance Fe with inevitable impurities. The hard particles disperse in the base by 2 to 40 wt.%.

17. 发明专利

JPH06220591A WEAR RESISTANT IRON-BASE SINTERED ALLOY AND ITS PRODUCTION 失效
公开(公告)号：JPH06220591A
公开(公告)日：1994-08-09
申请号：JP25870993
申请日：1993-10-15
申请人： TOYOTA MOTOR CORP
发明人： TAKAHASHI YOSHITAKA , MANABE AKIRA , KANEKO TADATAKA , OKAJIMA HIROSHI
IPC分类号： C22C33/02 , C22C38/00
摘要： PURPOSE:To produce an iron-base sintered alloy for valve seat excellent in wear resistance. CONSTITUTION:A powder mixture is prepared by mixing, by weight ratio, 2-30% of Ni-base alloy powder having a composition consisting of 5-20% Mo, 20-40% Cr, 10-20% W, and the balance Ni with inevitable impurities and 0.2-2% of graphite powder with an iron-base alloy powder having a composition consisting of, by weight ratio, 2-15% Co, 2-10%, preferably >3%-10%, Mo, and the balance Fe with inevitable impurities, which is compacted. Further, 0.2-2% of solid lubricant is mixed with the above, if necessary, and they are compacted. The resulting green compact is sintered at a temp. between 1323K and the melting point of the Ni-base alloy powder. Because alloy powders are used and matrix structure is sintered, the degree of homogenization of entering into solid solution of alloying elements in a matrix is increased and superior corrosion resistance, oxidation resistance, and wear resistance can be obtained with minimal alloy quantity, and further, wear resistance can be improved because Mo, Cr, and W in the Ni-base alloy powder combine with C to form carbides. Moreover, machinability can be improved by adding free cutting agent.

18. 发明专利

JPH03120301A POWDER METALLURGICAL METHOD FOR ALUMINUM ALLOY 失效
公开(公告)号：JPH03120301A
公开(公告)日：1991-05-22
申请号：JP25817289
申请日：1989-10-03
申请人： TOYOTA MOTOR CORP , TOYOTA CENTRAL RES & DEV
发明人： SUDO SHUNTARO , MANABE AKIRA , HAMAMOTO HIROSHI , KONDO MIKIO , ITO KAZUHIKO
IPC分类号： B22F3/14 , C22C1/04
摘要： PURPOSE:To manufacture a green compact made of Al alloy powder having high strength at a low cost by compacting the Al alloy powder having comparatively small spherical degree in a metallic mold to make this a preform and then, making the actual form under the specific temp. condition. CONSTITUTION:The Al alloy powder having =350 deg.C in the range of temp. at which sintering is not started, charged into the actual forming metallic die having temp. 0.75-1.25 times the preformed body temp. and pressurized for 5-30sec to manufacture the Al alloy green compact having high strength and >=0.97 ratio of the apparent density to true density without surface porosity at good yield of the powder raw material.

19. 发明专利

JPS6483640A MANUFACTURE OF SINTERED ALLOY HAVING EXCELLENT HIGH TEMPERATURE WEAR RESISTANCE 失效
公开(公告)号：JPS6483640A
公开(公告)日：1989-03-29
申请号：JP23850487
申请日：1987-09-22
申请人： TOYOTA MOTOR CORP , NIPPON FUNMATSU GOKIN KK
发明人： KADOTA YUKIO , MANABE AKIRA , ITO MASAO , MAEJIMA TAKASHI
IPC分类号： B22F3/10 , C22C33/02
摘要： PURPOSE:To easily manufacture a sintered alloy having excellent wear resistance by subjecting the molded body consisting of Cr alloy powder and Fe alloy powder to main sintering while melting partially in liquid phase and regulating its pore ratio to specific one. CONSTITUTION:The Cr alloy powder which is dispersed and burried into a matrix to form into hard grains and the Fe metallic powder contg. the compound having low melting point are mixed; and the mixture is subjected to compression molding. Said molded body is heated to partially produce a liquid phase in low melting point component and the molded body is subjected to main sintering. By this method, the sintered alloy having

20. 发明专利

JPS63154291A BRAZING FILLER METAL FOR SINTERED PARTS 失效
公开(公告)号：JPS63154291A
公开(公告)日：1988-06-27
申请号：JP1545887
申请日：1987-01-26
申请人： TOYOTA MOTOR CORP
发明人： KADOTA YUKIO , MANABE AKIRA
IPC分类号： B23K35/30 , C22C9/00 , C22C30/00
摘要： PURPOSE:To improve the quality of a joined part and to reduce the cost of joining by forming a brazing filler metal compsn. of specific ratios of Fe, Cr, Si, Bi, Cu, Mn, and Ni and incorporating a prescribed ratio of flux therein as necessary. CONSTITUTION:The brazing filler metal is formed by consisting the same, by weight, of 5-40% Fe and/or Cr, 1-5% Si and/or Bi, 20-65% Cu, 5-30% Mn, and >=20% Ni, and adding 1-6% flux thereto at need. Further, 5-30% Mn or 10-50% Cu is combined with the contents consisting of 5-50% Fe and/or Cr and 1-10% Si and/or Bi and the balance is composed of 1-6% Ni and flux. Since the Fe or Cr forms crystallized matter by reacting with the B and Si, the infiltration effect and erosion effect of the joint part are suppressed. the quality of the jointed part is thereby improved and the reduction of the joining cost is resulted from the decreased consumption of the brazing filler metal.

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式