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A kind of unequal thickness ferrite magnetic tile and its preparation method

A ferrite magnetic and unequal technology, which is applied in the direction of manufacturing tools, metal processing equipment, grinding/polishing equipment, etc., can solve the problems of low surface magnetism at the center point of the inner arc and uneven surface magnetism of the inner arc working surface. Achieve smooth surface magnetic waveform, increase surface magnetic induction intensity, and improve the effect of surface magnetic distribution waveform

Active Publication Date: 2019-03-15
HENGDIAN GRP DMEGC MAGNETICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The tile-type magnet is mainly used in the stator or rotor of a permanent magnet motor. Usually, several magnetic tiles are glued to the casing to form a ring-shaped stator or rotor. Conventional magnetic tiles are generally of equal thickness. In the case of an open circuit, the inner arc works The surface magnetism of the surface is uneven, and the surface magnetism of the center point of the inner arc is low

Method used

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  • A kind of unequal thickness ferrite magnetic tile and its preparation method
  • A kind of unequal thickness ferrite magnetic tile and its preparation method
  • A kind of unequal thickness ferrite magnetic tile and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Example 1 (parallel orientation):

[0031] The conventional process of parallel orientation magnetic field is used to prepare 10 conventional ferrite magnet tiles of the same thickness of the above specifications, and then 5 ferrite magnets of equal thickness are processed by the grinding method to prepare the ferrite magnets of different thickness of the above specifications , Take 3 each of the above two types of magnet tiles and measure the magnetism at different positions of the inner arc centerline, and draw the magnetism distribution curve. among them: figure 2 It is the magnetic test curve diagram of the inner arc centerline of the conventional magnetic tile in Example 1; image 3 It is the magnetic test curve diagram of the inner arc center line of the unequal-thickness magnet tile in Example 1. Table 2 is a comparison table of the magnetism of the inner arc center point of the two specifications of the magnetic tile in Example 1.

[0032] Table 2 Example 1 Compari...

Embodiment 2

[0035] Example 2 (Radiation orientation):

[0036] The conventional process of radiation orientation magnetic field is used to prepare 10 conventional ferrite magnet tiles of the same thickness of the above specifications, and then 5 ferrite magnets of equal thickness are processed by the grinding method to prepare the ferrite magnets of different thickness of the above specifications , Take 3 each of the above two types of magnet tiles and measure the magnetism at different positions of the inner arc centerline, and draw the magnetism distribution curve. among them: Figure 4 It is the magnetic test curve diagram of the inner arc center line of the conventional magnetic tile in Example 2; Figure 5 It is the magnetic test curve diagram of the inner arc center line of the unequal-thickness magnet tile in Example 2. Table 3 is a comparison table of the magnetism of the inner arc center point of the two specifications of the magnetic tile in Example 2.

[0037] Table 3 Example 2 Co...

Embodiment 3

[0040] Example 3 (molding method):

[0041] According to the specifications of the above-mentioned unequal-thickness magnet tiles, respectively design the forming molds for parallel orientation and radiation orientation, and prepare 5 unequal-thickness magnet tiles of parallel orientation and radiation orientation according to the magnetic tile production process, and test the inner arc center after magnetization The point table magnetism is shown in Table 4 below.

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Abstract

The invention discloses an unequal-thickness ferrite magnetic tile and a preparation method thereof. The unequal-thickness ferrite magnetic tile comprises a magnetic tile body, wherein the shape of the magnetic tile body is in symmetric distribution, the thickness of the magnetic tile body is gradually reduced from center to two sides, an inner camber surface of the magnetic tile body is not changed, and distance from an outer camber surface to the inner camber surface of the magnetic tile body is gradually reduced from center to two sides. The unequal-thickness ferrite magnetic tile and the preparation method thereof have the benefits as follows: surface magnetic induction intensity of the inner camber working face of the ferrite magnetic tile is improved, a surface magnetic distribution waveform is improved and becomes relatively smoother, performance of a motor is improved, and the motor operates stably; under the same using condition, the utilization quantity of magnets is reduced.

Description

Technical field [0001] The invention relates to the technical field related to the design and preparation of permanent magnet materials, in particular to a ferrite magnet tile of unequal thickness and a preparation method thereof. Background technique [0002] The magnet tile is a tile-shaped permanent magnet material device, which is mainly used in the stator or rotor of a permanent magnet motor, and specifically includes permanent magnet ferrite magnet tiles, neodymium iron boron magnet tiles and alnico magnet tiles. Permanent magnet ferrite magnet tiles are generally prepared by sintering process, which can be divided into different preparation processes such as wet pressing, dry pressing and dry pressing. The difference between the opposite and the same is whether there is an orientation magnetic field during the press molding. . Generally speaking, the magnetic properties of the magnet tiles prepared by the wet-pressed anisotropic process are relatively higher, and the curr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B24B1/00B24B9/06H02K1/06H02K15/03
CPCB24B1/00B24B9/06H02K1/06H02K15/03
Inventor 杨武国李军华韩相华吴云飞陈辉明
Owner HENGDIAN GRP DMEGC MAGNETICS CO LTD
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