Preparation method of radial pole anisotropic magnet material

A technology of polar anisotropy and magnets, which is applied in the field of preparation of radial polar anisotropy magnet materials, can solve the problems of polar magnets with weak magnetism, complex preparation process, and difficult assembly, and achieve high magnetic performance and small size Good effect of chemicalization and dynamic balance

CN111710520AActive Publication Date: 2020-09-25香磁磁业(深圳)有限公司
6 Cites 0 Cited by

Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
Publication Date
2020-09-25

Smart Images

  • Figure 1
    Figure 1
Patent Text Reader

Abstract

The invention relates to a preparation method of a radial pole anisotropic magnet material. The preparation method comprises the following steps: weighing the following components in parts by weight:50-80 parts of a first high-performance ferrite raw material, 20-50 parts of a second high-performance ferrite raw material, 1-2 parts of a dispersing agent and 0.3-0.8 part of a hair conditioner; sequentially carrying out magnetic field orientation larger than 8000 gausses, demagnetization, drying and crushing granulation treatment on the first high-performance ferrite raw material to obtain high-performance granulation magnetic powder with a magnetic domain of 20-120 meshes; crushing second high-performance ferrite raw material into non-granulated magnetic powder with a magnetic domain of 120-200 meshes; respectively crushing the dispersing agent and the hair conditioner into powder; and adding the non-granulated magnetic powder into the high-performance granulation magnetic powder, sequentially adding the dispersing agent powder and the hair conditioner powder, uniformly stirring, uniformly matching the sizes of the magnetic domains of the raw materials, and hermetically placing for8H. The magnet prepared by the preparation method provided by the invention is low in assembly difficulty, strong in magnetism and high in strength.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention relates to the field of magnet material preparation, in particular to a preparation method of radial polar anisotropy magnet material. Background technique

[0002] There are many types of magnet products, which are widely used, whether it plays an important role in the development of home appliances, office supplies, medical treatment, military equipment and high-tech industries, especially radial and anisotropic ferrite magnets are the best. In the production of polar anisotropic magnets, materials are the most critical. Material preparation is an important factor for the success of polar anisotropic magnets. However, the preparation process of traditional polar magnet materials is complicated, and the prepared multi-pole integrated magnetic ring needs to be assembled, which is difficult to assemble. At the same time, the prepared polar magnets still have the problems of weak magnetism and low strength. Contents of the invention [0...

Examples

Embodiment 1

[0028] Embodiment 1, the concrete steps of the preparation method of radial pole anisotropic magnet material are:

[0029] Step 1: Weigh the following raw materials according to weight percentage:

[0030] 30 parts of the first high-performance ferrite raw material, 70 parts of the second high-performance ferrite raw material, 1.8 parts of dispersant, and 0.5 part of conditioner.

[0031] Step 2: Orient the first high-performance ferrite raw material through a magnetic field (greater than 8000 Gauss).

[0032] Step 3: at a high temperature of 450-800°C / 1H, demagnetize and dry the first high-performance ferrite raw material after orientation treatment.

[0033] Step 4: Crushing and granulating the first high-performance ferrite raw material after demagnetization and drying treatment, and making large magnetic domain particles with magnetic domains of 20-120 meshes.

[0034] Step 5: The second high-performance ferrite raw material is pulverized into a small magnetic domain pow...

Embodiment 2

[0037] Embodiment 2, the specific steps of the preparation method of the radial pole anisotropic magnet material are:

[0038] Step 1: Weigh the following raw materials according to weight percentage:

[0039] 50 parts of the first high-performance ferrite raw material, 50 parts of the second high-performance ferrite raw material, 1.8 parts of dispersant, and 0.5 part of conditioner.

[0040] Step 2: Orient the first high-performance ferrite raw material through a magnetic field (greater than 8000 Gauss).

[0041] Step 3: at a high temperature of 450-800°C / 1H, demagnetize and dry the first high-performance ferrite raw material after orientation treatment.

[0042] Step 4: Crushing and granulating the first high-performance ferrite raw material after demagnetization and drying treatment, and making large magnetic domain particles with magnetic domains of 20-120 meshes.

[0043] Step 5: The second high-performance ferrite raw material is pulverized into a small magnetic domain...

Embodiment 3

[0046] Embodiment 3, the specific steps of the preparation method of the radial pole anisotropic magnet material are:

[0047] Step 1: Weigh the following raw materials according to weight percentage:

[0048] 65 parts of the first high-performance ferrite raw material, 35 parts of the second high-performance ferrite raw material, 1.8 parts of dispersant, and 0.5 part of conditioner.

[0049] Step 2: Orient the first high-performance ferrite raw material through a magnetic field (greater than 8000 Gauss).

[0050] Step 3: at a high temperature of 450-800° C. / 1H, demagnetize and dry the first high-performance ferrite raw material after orientation treatment.

[0051] Step 4: Crushing and granulating the first high-performance ferrite raw material after demagnetization and drying treatment, and making large magnetic domain particles with magnetic domains of 20-120 meshes.

[0052] Step 5: The second high-performance ferrite raw material is pulverized into a small magnetic doma...