| 摘要 |
PROBLEM TO BE SOLVED: To provide a magnet of satisfactory orientation by suppressing the lowering of a dehydration property in the case of wet molding when manufacturing the ferrite sintered magnet by using a wet molding method with water as a dispersion medium. SOLUTION: The manufacturing method for the ferrite sintered magnet is provided with a primary fine crushing process for providing temporarily sintered powder by crushing a temporarily sintered body, a heat treatment process for applying heat treatment to the temporarily sintered powder, a secondary fine crushing process for crushing the temporarily sintered powder to which the heat treatment is applied, a molding process for providing a molded body by applying wet molding to molding target powder including the temporarily crushed sintered powder, and a sintering process for sintering the molded body. A heat treatment temperature in the heat treatment process is >=450 deg.C and <800 deg.C and when adding SiO2 and CaCO3 to the temporarily sintered powder before the molding process, at least one of all SiO2 and CaCO3 is added after the heat treatment process. |
