PROCESS AND SYSTEM FOR PRODUCING GRANULATION POWDER OF RARE EARTH ALLOY AND PROCESS FOR PRODUCING SINTERED OBJECT OF RARE EARTH ALLOY

摘要

A process for producing granulation powder comprising a step for providing powder of rare earth alloy having remanent magnetization, a step for feeding the powder to a track (22) defined by a side face (22a) and a bottom face (22b) inclining downward toward the side face, and a step for imparting kinetic energy to the powder by vibrating the track and performing granulation under substantially zero magnetic field utilizing cohesive force caused by remanent magnetization of the powder and rolling action caused by kinetic energy while transporting the powder in the longitudinal direction of the track. Granulation powder of rare earth alloy exhibiting excellent fluidity and press moldability and capable of producing a magnet having excellent magnetic characteristics can thereby be obtained.