METHOD FOR MANUFACTURING OF RADIAL SINTERED MAGNET HAVING ANISOTROPIC

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A manufacturing method of a radial anisotropic sintered magnet is provided to improve a magnetic property by heating a formed product formed through a stack forming and a magnetic forming at a sintering temperature. In a first step, a plurality of primary formed products(9, 10) is formed by a magnetic field forming. A magnetic powder(5) is an anisotropic R-Fe-B magnetic powder. The magnetic powder is filled in an inner space of a mold frame(1). Electricity is applied to a top coil(8) and a bottom coil(3). The magnetic powder is compressed by a top punch(6) and a bottom punch(2). In a second step, a plurality of primary formed products is laminated on the mold frame, and is transformed into a secondary formed product(15). In a third step, the secondary formed product is sintered.