The invention discloses a method and device for fused deposition of heavy
rare earth elements on a
neodymium-iron-
boron surface
resistance wire, relates to the technical field of permanent
magnet material manufacturing, and mainly aims to solve the problems that an existing method for deposition of heavy
rare earth elements on the surface of a
neodymium-iron-
boron permanent
magnet material is complex in process and uneven in distribution of the heavy
rare earth elements. The method for fused deposition of the heavy rare earth elements on the
neodymium-iron-
boron surface
resistance wire comprises the following steps that S1, a neodymium-iron-boron permanent
magnet material is pre-treated; S2, the neodymium-iron-boron permanent magnet material is introduced into a
vacuum chamber and a transition chamber; S3, a
resistance wire melting
nozzle melts the wire containing the heavy rare earth elements and deposits the wire on the surface of the neodymium-iron-boron permanent magnet material; and S4, cooling is carried out. The device for fused deposition of the heavy rare earth elements on the neodymium-iron-boron surface resistance wire structurally comprises a
conveyor belt, and an acidification
pool, an isostatic pressing chamber, a
vacuum chamber, a transition chamber, a fused
deposition chamber and a
cooling chamber are sequentially arranged along the
conveyor belt. According to the method and device for fused deposition of the heavy rare earth elements on the neodymium-iron-boron surface resistance wire, the heavy rare earth elements can be uniformly deposited on the surface of the
neodymium iron boron permanent magnet material through the fused deposition method of the resistance wire, and meanwhile the preparation process is further simplified.