| 摘要 |
PURPOSE:To provide a method capable of manufacturing a permanent magnet material, which is superior in anisotropy uniaxially in the diameter direction, at low cost in the case where the form of an annular magnet is molded using a rare-earth magnet material. CONSTITUTION:Alloy powder 2, which is an RFeB (R shows a rare-earth element) magnet material, is filled and encapsulated in an annular metallic container 1, in which a processing material to be made plastic is sealed and housed in such a way as to be able to perform a ring rolling or a forging and an annular groove 12 is involved, the processing material is pressed and is made to perform a plastic processing in the direction of the ring diameter while its plastic deformation is inhibited in the vertical width direction of a ring in a temperature region lower than a liquidus line of 500 deg.C or higher and a plastic flow is formed in the peripheral direction of the processing material. Thereby, the processing material in the container 1 is substantially made anisotropic uniaxially in the diameter direction. |
