Equipment for improving coercive force of sintered neodymium-iron-boron magnet

Abstract

The invention provides equipment for improving the coercive force of a sintered neodymium-iron-boron magnet, which comprises a tank body, a movable door capable of being turned over to be opened is hinged above the tank body, spraying heads arranged along the axial direction of the tank body are arranged on the movable door, and a driving motor is fixed at the storefront position of the outer side of the tank body through a screw assembly. The driving motor is in transmission connection with a planet gear speed reducer fixedly installed in the tank body; the outer side of the front end of the planet gear speed reducer is connected with a plurality of clamping rods distributed in the circumferential direction at equal intervals, wherein inner coating rods in transmission connection with the planet gear speed reducer are arranged between the clamping rods. According to the invention, heavy rare earth slurry is sprayed through the spraying head to coat the outer surface of the clamped neodymium-iron-boron magnet, wherein due to the water absorption of the sponge material of the sponge shaft, the dropped heavy rare earth slurry can be adsorbed, thrown out through centrifugal force and evenly coated on the inner side of the neodymium-iron-boron magnet, the utilization rate of the heavy rare earth slurry is increased, and the utilization rate of the neodymium-iron-boron magnet is increased; besides, the coating uniformity of the heavy rare earth slurry on the inner side of the neodymium-iron-boron magnet is also improved, and good development prospects are achieved.

Description

technical field [0001] The invention relates to the field of rare earth permanent magnet materials, in particular to a device for increasing the coercive force of sintered NdFeB magnets. Background technique [0002] As a magnetic functional material, rare earth permanent magnet materials play an important role in various fields of social development. Among them, sintered NdFeB magnets have good comprehensive performance and high cost performance, and are widely used in wind power generation, automobile industry, medical equipment, household appliances, aerospace and other fields. They are known as the contemporary "magnet king" and occupy half of the permanent magnet materials. . With the development of modern technology, information, and emerging industries towards integration, intelligence, and miniaturization, the requirements for the performance of sintered NdFeB magnets are getting higher and higher. However, the low Curie temperature and poor temperature stability o...

AI Technical Summary

Problems solved by technology

However, when traditional equipment is used to coat the surface of the ring-shaped NdFeB magnet, the inner side of the ring-shaped NdFeB magnet is often not uniform due to the influence of the clamping mechanism, which affects the uniformity of the heavy rare earth film layer.

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