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1. 发明专利

JP2009295638A Method for manufacturing r-t-b magnet 审中-公开
标题翻译：制造R-T-B磁铁的方法
公开(公告)号：JP2009295638A
公开(公告)日：2009-12-17
申请号：JP2008145068
申请日：2008-06-02
申请人： Tdk Corp , Tdk株式会社
发明人： KOGA TOSHIYUKI , NISHIZAWA KOICHI , FUKAZAWA ARITERU , ISHIZAKA TSUTOMU
IPC分类号： H01F41/02 , B22F3/00 , B22F3/10 , B22F3/24 , C22C38/00 , H01F1/053
摘要： PROBLEM TO BE SOLVED: To provide a method for manufacturing an R-T-B magnet capable of suppressing fluctuation in a composition of a molded body in baking, improving magnetic characteristics of the obtained R-T-B magnet and preventing a variation in the magnetic characteristics accompanied by the fluctuation in the composition of the R-T-B magnet. SOLUTION: This method for manufacturing an R-T-B magnet comprises: a molding step of forming a molded body of a magnetic material, a temperature rise step of heating the molded body to raising the temperature of the molded body up to a baking temperature T s °C, and a temperature maintaining step of maintaining the temperature of the molded body at T s °C. In the temperature rise step or the temperature maintaining step, the atmosphere is switched from a vacuum atmosphere to an inert gas atmosphere, and switching from the vacuum atmosphere to the inert gas atmosphere is executed before a time point t 1 and after a time point t 2 , where t 1 is a time point when the temperature of the molded body reaches T s °C, and t 2 is a time point when the temperature of the molded body reaches T s °C and 50 minutes have not elapsed while maintaining the temperature at T s °C after t1. COPYRIGHT: (C)2010,JPO&INPIT
摘要翻译：要解决的问题：为了提供一种制造能够抑制烘焙中的成型体的组成变动的RTB磁体的方法，改善所获得的RTB磁体的磁特性，并防止伴随着 RTB磁体的组成波动。解决方案：这种制造RTB磁体的方法包括：形成磁性材料成型体的成型步骤，加热成型体以将成型体的温度升高到烘烤温度T的升温步骤＆lt; SB＆gt;℃，以及将成型体的温度保持在T SB>℃的温度保持步骤。在升温步骤或温度保持步骤中，将气氛从真空气氛切换到惰性气体气氛，并且在时间点t 1 并且在t 2 的时间点之后，其中t 1 是成型体的温度达到T ~~S ℃的时间点，并且t 2 是当成型体的温度达到T ~~S S时的时间点，并且在保持温度为T ~~S时没有经过50分钟， / SB>℃。版权所有（C）2010，JPO＆INPIT~~~~~~

2. 发明专利

JP2008248265A Method for producing rare earth sintered magnet 审中-公开
标题翻译：生产稀土烧结磁铁的方法
公开(公告)号：JP2008248265A
公开(公告)日：2008-10-16
申请号：JP2007087156
申请日：2007-03-29
申请人： Tdk Corp , Tdk株式会社
发明人： IWASAKI MAKOTO , FUKAZAWA ARITERU , YANAGI HIROAKI , KAWAI YOSHIHARU
IPC分类号： B22F3/10 , C22C38/00 , H01F41/02
摘要： PROBLEM TO BE SOLVED: To effectively suppress the deformation of sintered compacts by uniformizing heating temperature in a sintering vessel.
SOLUTION: Regarding the method for producing rare earth sintered magnets where sintering is performed in a state where a plurality of molded bodies G composed of alloy powder having a prescribed composition are arranged within a sintering vessel 10, the sintering vessel 10 is composed of: an outside vessel 11; and an inside vessel 12 arranged at the inside of the outside vessel 11 and storing the molded bodies G, a first thermal shielding body 13 is arranged between the outside vessel 11 and the inside vessel 12, and also, a second thermal shielding body 14 surrounding the outer circumferences of the plurality of molding bodies G is arranged within the inside vessel 12.
COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：要解决的问题：通过使烧结容器中的加热温度均匀化，有效地抑制烧结体的变形。解决方案：关于在烧结容器10内配置有由具有规定成分的合金粉末构成的多个成形体G进行烧结的稀土类烧结磁体的制造方法，构成烧结容器10 的外部容器11; 以及布置在外部容器11的内部并且存储成型体G的内部容器12，在外部容器11和内部容器12之间设置有第一热屏蔽体13，以及围绕多个成型体G的外周配置在内部容器12内。（C）2009年，JPO＆INPIT

3. 发明专利

JP2008251761A Method of manufacturing rare-earth sintered magnet 有权
标题翻译：制造稀土烧结磁体的方法
公开(公告)号：JP2008251761A
公开(公告)日：2008-10-16
申请号：JP2007090085
申请日：2007-03-30
申请人： Tdk Corp , Tdk株式会社
发明人： MITSUTAKE KOJI , KAWAI YOSHIHARU , FUKAZAWA ARITERU
IPC分类号： H01F41/02 , B22F3/10 , C22C38/00 , H01F1/053
摘要： PROBLEM TO BE SOLVED: To provide a technology for preventing transformation generated locally, when a thermal shield is to be arranged. SOLUTION: There is provided the method of manufacturing a rare-earth sintered magnet, in which formed objects G are heated and held, and thereby sintered in a state in which the plurality of formed objects G composed of the alloy powder of a predetermined composition are arranged in a sintering container 10, comprising a box tray having an opening at the upper portion and a lid for closing the opening and a thermal insulating wall, surrounding the formed objects G arranged in the sintering container 10, is arranged. The thermal insulating wall is constituted by combining a plurality of thermal insulating bodies 13, and in the thermal insulating wall, the thermal insulating bodies 13 overlap each other in the thickness direction, in the connecting portion of the adjacent thermal insulating bodies 13. COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：要解决的问题：提供一种防止当局部产生变换的技术时，要布置热屏蔽。解决方案：提供了制造稀土烧结磁体的方法，其中形成的物体G被加热和保持，从而在其中由多个成形物体G组成的状态下烧结预定组合物被布置在烧结容器10中，该烧结容器10包括在上部具有开口的盒托和用于封闭开口的盖和围绕设置在烧结容器10中的成形物体G的隔热壁。绝热壁由多个隔热体13组合构成，在隔热壁13中，隔热体13在相邻的隔热体13的连接部分的厚度方向上重叠。
版权所有（C）2009，JPO＆INPIT

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