Treatment device

摘要

A processing system according to the present invention includes: a diffusion processing section 10 which heats a sintered R-T-B based magnet body 1 and an RH diffusion source 2 made of either a metal or alloy of a heavy rare-earth element RH (which is at least one of Dy and Tb) while rotating; a sorting section 20 which selectively sorts the RH diffusion source 2 from the sintered R-T-B based magnet body 1 when the diffusion source and the magnet body come from the diffusion processing section 10; and a heat treatment processing section 30 which conducts a heat treatment process on the sintered R-T-B based magnet body 1, in which the heavy rare-earth element RH has been diffused and from which the RH diffusion source 2 has been removed.

主权项

1. A processing system comprising:
a diffusion processing section which heats an RH diffusion source made of either a metal or alloy of a heavy rare-earth element RH (which is at least one of Dy and Tb) and a sintered R-T-B based magnet body while rotating; a sorting section which is adjacent to the diffusion processing section and which selectively sorts the RH diffusion source from the sintered R-T-B based magnet body when the diffusion source and the magnet body come from the diffusion processing section; a heat treatment processing section which is adjacent to the sorting section and which conducts a heat treatment process on the sintered R-T-B based magnet body, in which the heavy rare-earth element RH has been diffused by the diffusion processing section and from which the RH diffusion source has been removed, while rotating; a tilting mechanism which changes at least the diffusion processing section, the sorting section, and the heat treatment processing section between a tilted position and a level position during a process including diffusion, sorting, and heat treatment steps; wherein the diffusion processing section:
includes a first cylindrical inner wall portion which houses the RH diffusion source and the sintered R-T-B based magnet body;includes a first spiral baffle arranged on the first cylindrical inner wall portion; andpasses the RH diffusion source and the sintered R-T-B based magnet body to the sorting section while being rotated; the sorting section:
includes a second cylindrical inner wall portion which houses the RH diffusion source and the sintered R-T-B based magnet body and which has holes;ejects the RH diffusion source through the holes out of itself while moving the RH diffusion source and the sintered R-T-B based magnet body that have come from the diffusion processing section toward the heat treatment processing section; andpasses the sintered R-T-B based magnet body to the heat treatment processing section while being rotated; the heat treatment processing section:
includes a third cylindrical inner wall portion which houses the sintered R-T-B based magnet body;includes a second spiral baffle arranged on the third cylindrical inner wall portion; andejects the sintered R-T-B based magnet body through an outlet port while being rotated; and the first spiral baffle is arranged so that its spiral direction is reverse to that of the second spiral baffle.