A kind of NdFeB powder stirring device and stirring method

Abstract

The invention discloses an NdFeB powder stirring device, which relates to the technical field of NdFeB processing. In this application, the stirring device includes: the base body keeps the stirring device away from the ground plane; the stirring part is connected to the base body, and the stirring part includes: the outer shell and the base body are mated and connected, the inner shell is mated and connected with the outer shell, and the inner shell has an accommodation space; the upper cover is connected The outer shell and the upper cover fit the outer shell and the inner shell at the same time, the screening plate is connected to the inner shell, and the driving part is connected to the upper cover. On the outer circumference of the rotating shaft, the air-filled part is connected to the shell, and the auxiliary mixing part is connected to the shell. When stirring the NdFeB powder, the present invention adopts the driving part and the stirring part to carry out preliminary screening of the powder to separate the powder that does not meet the standard, so as to improve the quality of the follow-up product, and at the same time, carry out anti-oxidation treatment and anti-humidity treatment on the powder through the inflatable part. The protection improves the magnetic properties of the powder in the subsequent process from being affected.

Description

technical field [0001] The invention relates to the technical field of NdFeB processing, in particular to a NdFeB powder stirring device and a stirring method. Background technique [0002] During the processing of NdFeB permanent magnets, the raw material powder needs to be stirred to make it evenly mixed, and then pressed and formed. In order to obtain a magnet with good performance, the powder particles will be screened during powder making to keep 90% The powder particles are up to the standard size, so as to ensure the powder quality, but some substandard powders will still be missed during the milling process, so that they will be mixed into the qualified powder during the mixing process, resulting in impurities in the later product. [0003] At the same time, NdFeB rare earth permanent magnet materials contain a large proportion of rare earth elements. The chemical properties of rare earth elements are very active, and they are easy to react with oxygen in the air to ...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a NdFeB powder stirring device, which is used to solve the problem that the NdFeB powder in the prior art cannot be fully mixed and uniformly reduced to reduce powder agglomeration during the stirring process, and the powder cannot be kept dry during stirring , to prevent the problem of powder oxidation

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