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A sintered NdFeB magnet automatic pulverizing device and automatic pulverizing method

A pulverizing device, NdFeB technology, applied in grain processing and other directions to achieve the effect of improving the pulverizing effect

Active Publication Date: 2022-08-02
安徽万磁电子股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Based on this, it is necessary to provide a sintered NdFeB magnet for the problem of how to screen out the agglomerated NdFeB magnetic groups so that the NdFeB magnetic groups can be crushed circularly until the NdFeB magnetic groups are completely crushed. Automatic crushing device and automatic crushing method thereof

Method used

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  • A sintered NdFeB magnet automatic pulverizing device and automatic pulverizing method
  • A sintered NdFeB magnet automatic pulverizing device and automatic pulverizing method
  • A sintered NdFeB magnet automatic pulverizing device and automatic pulverizing method

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Embodiment 1

[0056] The present embodiment discloses a method for producing a sintered NdFeB magnet, which specifically includes the steps:

[0057] Prepare a variety of raw materials, design their components, and calculate and weigh the ingredients according to the designed proportions to obtain a preliminary mixture.

[0058] The preliminary mixed material is smelted, followed by ingot / casting, crushing treatment, and multifunctional additives are added to obtain mixed powder.

[0059] The particle size distribution of the mixed powder was analyzed, and then the magnetic field orientation and pressing treatment, sintering treatment, and tempering treatment were sequentially performed to obtain a black body blank.

[0060] The black body blank is mechanically processed to obtain a white body blank, the white body blank is subjected to surface coating treatment and then cut, and a sintered NdFeB magnet is obtained after magnetization by sintering.

[0061] see figure 1 The present embodi...

Embodiment 2

[0088] see Figure 4 , This embodiment introduces an automatic pulverizing method for sintered NdFeB magnets. The automatic pulverizing method is applied to the automatic pulverizing device for sintered NdFeB magnets in Example 1, which pulverizes the NdFeB magnets. The automatic crushing method includes the steps:

[0089] The NdFeB magnetic clusters are separated from the NdFeB magnetic powder by the sieving box 3 .

[0090] The separated NdFeB magnetic clusters are pulverized by the roller set 11 to obtain NdFeB magnetic powder and incompletely pulverized NdFeB magnetic clusters.

[0091] The NdFeB magnetic powder is separated from the incompletely crushed NdFeB magnetic clusters through the screen 12 , and the incompletely crushed NdFeB magnetic clusters are transported into the circulation bin 15 .

[0092] The incompletely pulverized NdFeB magnetic mass is transferred into the screening box 3 through the circulating component to realize circulating pulverization.

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Abstract

The invention relates to an automatic crushing device for sintered NdFeB magnets. The automatic pulverizing device includes: pulverizing bin, feeding pipe, roller group and screening assembly; the screening assembly is arranged in the pulverizing bin and is located between the feeding pipe and the roller group; the screening assembly includes: a screening box , two rotating plates one, two rotating plates two, two sets of telescopic components one, two sets of telescopic components Work. The present invention can separate the neodymium-iron-boron magnetic clusters in the neodymium-iron-boron magnetic powder by setting the screening component, and then pulverize the neodymium-iron-boron magnetic clusters, thereby improving the pulverizing effect. By setting up the circulation component, the completely crushed NdFeB magnets can be crushed again until they are crushed completely.

Description

technical field [0001] The invention relates to the field of production of sintered neodymium iron boron magnets, in particular to an automatic crushing device for sintered neodymium iron boron magnets and an automatic crushing method thereof. Background technique [0002] NdFeB magnets, also known as NdFeB magnets, are tetragonal crystals formed by neodymium, iron and boron. NdFeB magnets have high magnetic properties and are widely used in electronic products. In the production process of NdFeB magnets, multifunctional additives need to be added after crushing after the smelting process. Because NdFeB magnetic powder has agglomeration characteristics, it will form NdFeB magnetic clusters of different sizes. If it is directly pulverized, the pulverization effect will be poor due to the existence of magnetic powder, and after pulverization, there will be some neodymium The iron-boron magnetic clusters cannot be completely pulverized, resulting in the existence of certain n...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B02C4/08B02C4/30B02C4/28B02C23/12B02C23/14
CPCB02C4/08B02C4/30B02C4/286B02C23/12B02C23/14
Inventor 唐睿
Owner 安徽万磁电子股份有限公司
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