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61. 发明专利

JPS60131935A PRODUCTION OF PERMANENT MAGNET ALLOY 失效
公开(公告)号：JPS60131935A
公开(公告)日：1985-07-13
申请号：JP23908983
申请日：1983-12-19
申请人： HITACHI METALS LTD
发明人： TAWARA KAZUNORI , UCHIDA KIMIHO , TANIGAWA SHIGEO , MIZUHARA TAKESHI
IPC分类号： C22C1/04 , B22F1/00 , B22F9/20 , C22C19/07 , H01F1/08
摘要： PURPOSE:To produce a permanent magnet consisting of a Cu substn. type multi- element rare earth intermetallic compd. having excellent characteristics at a low cost by melting rare earths in the form of oxide and the balance in the form of metal together with a reducing agent to manufacture a base alloy contg. no Cu, plating Cu to the solidified base alloy and subjecting the alloy to diffusion with heating. CONSTITUTION:Raw materials are mixed by melting rare earths such as Sm, Ce, Pr, etc. in the form of inexpensive oxide together with a reducing agent such as Ca, Mg or the like and the other components except Cu in the form of metallic powder or partly oxide in the stage of producing a Cu substn. type multi-element rare earth intermetallic compd. having the compsn. expressed by the formula (1). The mixture is put in a reaction vessel and is brought into reaction at 1,000- 1,300 deg.C to reduce the oxide of the rare earths and other metals. The cake alloyed by the mutual diffusion is thus manufactured. The cake is roughly ground and Cu is then plated on the surface. The plated cake is heated at 800-1,250 deg.C to diffuse Cu and thereafter the cake is pulverized, oriented and molded, by which the permanent magnet having high performance is produced at a low cost.

62. 发明专利

JPS6029204B2 失效
公开(公告)号：JPS6029204B2
公开(公告)日：1985-07-09
申请号：JP14647576
申请日：1976-12-08
申请人： HITACHI METALS LTD
发明人： MURAKAMI SHIRO , TAWARA KAZUNORI , HASEGAWA KENJI , TANIGAWA SHIGEO
IPC分类号： C04B35/30 , H01F1/22 , H01F1/34

63. 发明专利

JPS6037112A MANUFACTURE OF ANISOTROPIC COMPOSITE MAGNET 失效
公开(公告)号：JPS6037112A
公开(公告)日：1985-02-26
申请号：JP14544183
申请日：1983-08-09
申请人： HITACHI METALS LTD
发明人： TAWARA KAZUNORI , UCHIDA KIMIHO , TANIGAWA SHIGEO , SHIINA SHIYUUICHI
IPC分类号： H01F41/02
摘要： PURPOSE:To increase magnetic force largely by a simple facility by using a mold with a magnetic circuit for pulses, generating a pulse magnetic field and orientating magnetic particles in the mold by the magnetic field. CONSTITUTION:A mold is constituted by mounting a yoke section 5 consisting of a magnetic material and conductors 4 around a cylindrical molding space 2, to the inside thereof a core 1 is fitted concentrically, through a thin cylinder 3 composed of a nonmagnetic material. A kneaded material consisting of ferromagnetic powder, such as ferrite powder having magnet plumbite type crystallographic structure, alnico magnet powder, etc. and one kind or two kinds or more of thermoplastic resins, such as polyethylene, polypropylene, etc. is prepared as raw materials. The kneaded material is charged to an injection molding machine with the mold, and a pulse magnetic field is applied into the mold at least once during the time when a molded material is cooled and solidified on an injection molding or after a molding. A obtained anisotropic molded shape is cooled and solidified, and taken out of the mold. The outer diameter of the obtained molded shape is processed to predetermined size as required, and the molded shape is magnetized in the same direction as the anisotropic direction, thus acquiring an anisotropic cylindrical magnet.

64. 发明专利

JPS58180005A Manufacture of rare-earth intermetallic compound magnet 失效
标题翻译：稀土金属间化合物磁铁的制造
公开(公告)号：JPS58180005A
公开(公告)日：1983-10-21
申请号：JP6293782
申请日：1982-04-15
申请人： Hitachi Metals Ltd
发明人： TANIGAWA SHIGEO , MEGURO NORIAKI , TOKUNAGA MASAAKI
IPC分类号： H01F1/08 , H01F1/055
CPC分类号： H01F1/0558
摘要： PURPOSE:To obtain the rare-earth intermetallic powder magnet, thermal stability thereof is excellent and shape density thereof is high and which has high magnetic flux density, by utilizing only coarse powder, grain size thereof is adjusted at specific value. CONSTITUTION:Ingot acquired by melting an alloy, which contains rare-earth metals and consists of 25.7% Sm, 13.7% Fe, 7.6% Cu, 2.6% Hf, and the remainder Co in wt%, through high-frequency dissolution is homogenized in an argon atmosphere, water-hardened and age-treated in the argon atmosphere. The material is coarse-ground and fine-ground by using a jaw crusher and a disk mill, a jet mill, etc. after aging, coarse powder coarse-ground is classified by using a screen of 635 meshes, and the coarse powder of +635 meshes is obtained. Coarse powder and fins of the grain size of 20-500 micron of rare-earth intermetallic compound powder acquired in this manner are each kneaded with an epoxy group binder, and pressed in a magnetic field of approximately 8,000Oe.
摘要翻译：目的：为了获得稀土金属间化合物粉末磁体，其热稳定性优异，形状密度高，磁通密度高，仅使用粗粉末，其粒径调整为特定值。构成：通过熔化含有稀土金属并由25.7％Sm，13.7％Fe，7.6％Cu，2.6％Hf和其余Co重量％通过高频溶解组成的合金获得的锭子被均质化在氩气气氛中进行水硬化和老化处理。通过使用颚式破碎机，圆盘磨机，喷射式粉碎机等进行老化后的材料进行粗磨和细磨，通过使用635目的筛网对粗粉粗粒进行分级，粗粉末+ 获得635个网格。以这种方式获得的稀土金属间化合物粉末的粒径为20-500微米的粗粉末和翅片各自用环氧基粘合剂捏合，并在大约8,000Oe的磁场中压制。

65. 发明专利

JPS5810463B2 失效
公开(公告)号：JPS5810463B2
公开(公告)日：1983-02-25
申请号：JP10605978
申请日：1978-08-30
申请人： HITACHI METALS LTD
发明人： IWATA MASAO , YOSHIZAWA HISAO , TANIGAWA SHIGEO , IGARASHI ZENJI
IPC分类号： C22C38/00 , C22C38/30 , C22C38/34 , C22C38/60 , H01F1/04

66. 发明专利

JPS589827B2 失效
公开(公告)号：JPS589827B2
公开(公告)日：1983-02-23
申请号：JP6246578
申请日：1978-05-25
申请人： HITACHI METALS LTD
发明人： TANIGAWA SHIGEO , IWATA MASAO
IPC分类号： C22C19/07 , C22C27/06 , C22C30/00 , C22C38/00 , C22C38/52 , H01F1/04

67. 发明专利

JPS5544527A FEECRRCO TYPE MAGNET ALLOY 失效
公开(公告)号：JPS5544527A
公开(公告)日：1980-03-28
申请号：JP11640078
申请日：1978-09-21
申请人： HITACHI METALS LTD
发明人： IWATA MASAO , YOSHIZAWA HISAO , TANIGAWA SHIGEO , IGARASHI ZENJI
IPC分类号： C22C30/00 , C22C27/06 , C22C38/00 , C22C38/52 , H01F1/04
摘要： PURPOSE:To provide the title alloy of a specified compsn. consisting of Cr, Co, Ti, Al and the balance Fe which alloy has superior magnetic characteristics and mechanical workability and can be manufactured stably and industrially. CONSTITUTION:This alloy consists of, by wt., Cr 17-45%, Co 3-35%, Ti 0.03- 10%, Al 0.01-5% and the balance Fe essentially. This alloy has very superior hot and cold workability, and it can be soln.-heat-treated very stably at a relatively low temp. In addn., it is excellent in magnetic characteristics such as Hc and Br.

68. 发明专利

JPS5544523A FEECRRCO TYPE MAGNET ALLOY 失效
公开(公告)号：JPS5544523A
公开(公告)日：1980-03-28
申请号：JP11639678
申请日：1978-09-21
申请人： HITACHI METALS LTD
发明人： IWATA MASAO , YOSHIZAWA HISAO , TANIGAWA SHIGEO , IGARASHI ZENJI
IPC分类号： C22C30/00 , C22C27/06 , C22C38/00 , C22C38/60 , H01F1/04
摘要： PURPOSE:To provide the title alloy of a specified compsn. consisting of Cr, Co, Ti, S and the balance Fe which alloy has superior magnetic characteristics and mechanical workability and can be manufactured stably and industrially. CONSTITUTION:This alloy consists of, by wt., Cr 17-45%, Co 3-35%, Ti 0.03- 10%, S

69. 发明专利

JPS5544522A FEECRRCO TYPE MAGNET ALLOY 失效
公开(公告)号：JPS5544522A
公开(公告)日：1980-03-28
申请号：JP11639578
申请日：1978-09-21
申请人： HITACHI METALS LTD
发明人： IWATA MASAO , YOSHIZAWA HISAO , TANIGAWA SHIGEO , IGARASHI ZENJI
IPC分类号： C22C30/00 , C22C27/06 , C22C38/00 , C22C38/52 , H01F1/04
摘要： PURPOSE:To provide the title alloy of a specified compsn. consisting of Cr, Co, Ti, Sn and the balance Fe which alloy has superior magnetic characteristics and mechanical workability and can be manufactured stably and industrially. CONSTITUTION:This alloy consists of, by wt., Cr 17-45%, Co 3-35%, Ti 0.03- 10%, Sn 0.01-5% and the balance Fe essentially. This alloy has very superior hot and cold workability, and it can be soln.-heat-treated stably at a relatively low temp. In addn., it is excellent in magnetic characteristics such as Hc and Br.

70. 发明专利

JPS5544521A FEECRRCO TYPE MAGNET ALLOY 失效
公开(公告)号：JPS5544521A
公开(公告)日：1980-03-28
申请号：JP11639478
申请日：1978-09-21
申请人： HITACHI METALS LTD
发明人： IWATA MASAO , YOSHIZAWA HISAO , TANIGAWA SHIGEO , IGARASHI ZENJI
IPC分类号： C22C30/00 , C22C27/06 , C22C38/00 , C22C38/52 , H01F1/04
摘要： PURPOSE:To provide the title alloy of a specified compsn. consisting of Cr, Co, Ti, Zn and the balance Fe which alloy has superior magnetic characteristics and mechanical workability and can be manufactured stably and industrially. CONSTITUTION:This alloy consists of, by wt., Cr 17-45%, Co 3-35%, Ti 0.03- 10%, Zn 0.01-2% and the balance Fe essentially. This alloy has very superior hot and cold workability, and it can be soln.-heat-treated stably at a relatively low temp. In addn., it is excellent in magnetic characteristics such as Hc and Br.

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