CN111710520A - Preparation method of radial polar anisotropic magnet material - Google Patents
Preparation method of radial polar anisotropic magnet material Download PDFInfo
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- CN111710520A CN111710520A CN202010673782.0A CN202010673782A CN111710520A CN 111710520 A CN111710520 A CN 111710520A CN 202010673782 A CN202010673782 A CN 202010673782A CN 111710520 A CN111710520 A CN 111710520A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
- H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
- H01F41/0253—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets for manufacturing permanent magnets
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
- H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
- H01F41/0253—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets for manufacturing permanent magnets
- H01F41/0273—Imparting anisotropy
- H01F41/028—Radial anisotropy
Abstract
The invention relates to a preparation method of a radial polar anisotropic magnet material, which comprises the following steps: weighing the components according to the proportion of 50-80 parts by weight of the first high-performance ferrite raw material, 20-50 parts by weight of the second high-performance ferrite raw material, 1-2 parts by weight of the dispersing agent and 0.3-0.8 part by weight of the hair moistening agent; sequentially carrying out magnetic field orientation, demagnetization, drying and crushing granulation treatment on a first high-performance ferrite raw material with a magnetic field of more than 8000 Gauss to prepare high-performance granulated magnetic powder with a magnetic domain of 20-120 meshes; crushing the second high-performance ferrite raw material to prepare non-granulated magnetic powder with a magnetic domain of 120-200 meshes; respectively pulverizing the dispersant and the hair conditioner to obtain powders; adding non-granulated magnetic powder into high-performance granulated magnetic powder, sequentially adding dispersant powder and lubricant powder, stirring uniformly to make the magnetic domain size of the raw materials uniformly matched, sealing and placing for 8H. The magnet prepared by the preparation method provided by the application is small in assembly difficulty, strong in magnetism and high in strength.
Description
Technical Field
The invention relates to the field of preparation of magnet materials, in particular to a preparation method of a radial heteropolarity magnet material.
Background
The magnet products are various in types and wide in application, play an important role in the development of household appliances, office supplies, medical treatment, military equipment and high and new technology industries, and are particularly outstanding among radial anisotropic ferrite magnets. The most key is the material in the production of the polar anisotropic magnet, the preparation of the material is an important number for the success of the polar anisotropic magnet, however, the preparation process of the traditional polar anisotropic magnet material is complex, the multi-pole integrated magnetic ring prepared by the method needs to be assembled, and the assembly difficulty is high; meanwhile, the prepared pole-opposite magnet has the problems of weak magnetism and small strength.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a preparation method of a radial heteropolarity magnet material, so that the prepared magnet is low in assembly difficulty, strong in magnetism and high in strength.
In order to realize the purpose of the invention, the invention adopts the following technical scheme:
a preparation method of a radial polar anisotropic magnet material comprises the following steps:
weighing the components according to the proportion of 50-80 parts by weight of the first high-performance ferrite raw material, 20-50 parts by weight of the second high-performance ferrite raw material, 1-2 parts by weight of the dispersing agent and 0.3-0.8 part by weight of the hair moistening agent;
orienting said first high performance ferrite feedstock with a magnetic field greater than 8000 Gauss;
demagnetizing and drying the first high-performance ferrite raw material subjected to orientation treatment at the high temperature of 450-800 ℃/1H;
crushing and granulating the demagnetized and dried first high-performance ferrite raw material to prepare high-performance granulated magnetic powder with a magnetic domain of 20-120 meshes;
crushing the second high-performance ferrite raw material to prepare non-granulated magnetic powder with a magnetic domain of 120-200 meshes;
respectively crushing the dispersing agent and the hair moistening agent into powder;
and adding the non-granulated magnetic powder into the high-performance granulated magnetic powder, sequentially adding dispersant powder and lubricant powder, uniformly stirring to ensure that the magnetic domain size of the raw materials is uniformly matched, and sealing and placing for 8H.
In one embodiment, the dispersing agent is a camphor raw material, and the hair moistening agent is a mixture raw material of camphor and magnesium stearate.
The magnet composite material prepared by the application is a polar anisotropic radial magnet prepared in a Halbach arrangement mode through magnetic field orientation, and has the main advantages that: 1, radial multipoles; 2, magnetic force is higher than that of a magnet with the same thickness: 3, the multi-pole integrated magnetic ring does not need to be assembled, the jumping degree is small after assembly, and the dynamic balance is good; 4, the motor has the advantages of small size, light weight, high precision and high new energy, and can replace partial rare earth materials. Compared with the common existing raw materials, the magnetic performance is ensured to be high, the strength is good and cracks are not easy to occur in the magnet manufacturing process.
Detailed Description
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The terms "first", "second", and the like, as used herein, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature.
The present invention and its advantageous effects are described in further detail below with reference to examples.
The application provides a preparation method of a radial polar anisotropic magnet material, which comprises a step 1, a step 2, a step 3, a step 4, a step 5, a step 6 and a step 7, wherein,
step 1: weighing the components according to the proportion of 50-80 parts by weight of the first high-performance ferrite raw material, 20-50 parts by weight of the second high-performance ferrite raw material, 1-2 parts by weight of the dispersing agent and 0.3-0.8 part by weight of the hair moistening agent.
Step 2: the first high performance ferrite feedstock is oriented by a magnetic field greater than 8000 gauss.
And step 3: and demagnetizing and drying the first high-performance ferrite raw material subjected to orientation treatment at the high temperature of 450-800 ℃/1H.
And 4, step 4: and (3) crushing and granulating the demagnetized and dried first high-performance ferrite raw material to prepare large magnetic domain particles with the magnetic domain of 20-120 meshes, namely the high-performance granulated magnetic powder.
And 5: and crushing the second high-performance ferrite raw material to prepare small magnetic domain powder with a magnetic domain of 120-200 meshes, namely non-granulated magnetic powder.
Step 6: the dispersing agent and the hair rinse are respectively prepared into powder by crushing.
And 7: adding the small magnetic domain powder into the large magnetic domain particles, sequentially adding the dispersant powder and the emollient powder, uniformly stirring to ensure that the sizes of the raw material magnetic domains are uniformly matched, and sealing and placing for 8H.
Specifically, the dispersant provided in this example is a camphor raw material, and the hair tonic is a mixture raw material of camphor and magnesium stearate.
The magnet composite material prepared by the application is a polar anisotropic radial magnet prepared in a Halbach arrangement mode through magnetic field orientation, and has the main advantages that: 1, radial multipoles; 2, magnetic force is higher than that of a magnet with the same thickness: 3, the multi-pole integrated magnetic ring does not need to be assembled, the jumping degree is small after assembly, and the dynamic balance is good; 4, the motor has the advantages of small size, light weight, high precision and high new energy, and can replace partial rare earth materials. Compared with the common existing raw materials, the magnetic performance is ensured to be high, the strength is good and cracks are not easy to occur in the magnet manufacturing process.
In order to more clearly explain the process flow of the steps of the method for preparing a radial anisotropic magnet material provided in the present application, the following examples are provided for illustration purposes:
example 1, the method for preparing a radial anisotropic magnet material comprises the following specific steps:
step 1: weighing the following raw materials in percentage by weight:
30 parts of first high-performance ferrite raw material, 70 parts of second high-performance ferrite raw material, 1.8 parts of dispersing agent and 0.5 part of hair moistening agent.
Step 2: the first high performance ferrite feedstock is oriented by passing a magnetic field (greater than 8000 gauss).
And step 3: and demagnetizing and drying the first high-performance ferrite raw material subjected to orientation treatment at the high temperature of 450-800 ℃/1H.
And 4, step 4: and (3) crushing and granulating the demagnetized and dried first high-performance ferrite raw material to prepare large magnetic domain particles with the magnetic domains of 20-120 meshes.
And 5: and crushing the second high-performance ferrite raw material to prepare small magnetic domain powder with the magnetic domain of 120-200 meshes.
Step 6: the dispersing agent is prepared by pulverizing Camphora and making into micropowder; the hair moistening agent is prepared by pulverizing a mixture of Camphora and magnesium stearate, and making into micropowder.
And 7: adding the small magnetic domain powder into the large magnetic domain particles, sequentially adding the dispersant powder and the hair rinse powder, mixing for 30 minutes, and sealing and storing for 8H.
Embodiment 2, the method for preparing a radial anisotropic magnet material comprises the following specific steps:
step 1: weighing the following raw materials in percentage by weight:
50 parts of a first high-performance ferrite raw material, 50 parts of a second high-performance ferrite raw material, 1.8 parts of a dispersing agent and 0.5 part of a hair moistening agent.
Step 2: the first high performance ferrite feedstock is oriented by passing a magnetic field (greater than 8000 gauss).
And step 3: and demagnetizing and drying the first high-performance ferrite raw material subjected to orientation treatment at the high temperature of 450-800 ℃/1H.
And 4, step 4: and (3) crushing and granulating the demagnetized and dried first high-performance ferrite raw material to prepare large magnetic domain particles with the magnetic domains of 20-120 meshes.
And 5: and crushing the second high-performance ferrite raw material to prepare small magnetic domain powder with the magnetic domain of 120-200 meshes.
Step 6: the dispersing agent is prepared by pulverizing Camphora and making into micropowder; the hair moistening agent is prepared by pulverizing a mixture of Camphora and magnesium stearate, and making into micropowder.
And 7: adding the small magnetic domain powder into the large magnetic domain particles, sequentially adding the dispersant powder and the hair rinse powder, mixing for 30 minutes, and sealing and storing for 8H.
Example 3, the method for preparing a radial anisotropic magnet material comprises the following specific steps:
step 1: weighing the following raw materials in percentage by weight:
65 parts of a first high-performance ferrite raw material, 35 parts of a second high-performance ferrite raw material, 1.8 parts of a dispersing agent and 0.5 part of a hair moistening agent.
Step 2: the first high performance ferrite feedstock is oriented by passing a magnetic field (greater than 8000 gauss).
And step 3: and demagnetizing and drying the first high-performance ferrite raw material subjected to the orientation treatment at the high temperature of 450-800 ℃/1H.
And 4, step 4: and (3) crushing and granulating the demagnetized and dried first high-performance ferrite raw material to prepare large magnetic domain particles with the magnetic domains of 20-120 meshes.
And 5: and crushing the second high-performance ferrite raw material to prepare small magnetic domain powder with the magnetic domain of 120-200 meshes.
Step 6: the dispersing agent is prepared by pulverizing Camphora and making into micropowder; the hair moistening agent is prepared by pulverizing a mixture of Camphora and magnesium stearate, and making into micropowder.
And 7: adding the small magnetic domain powder into the large magnetic domain particles, sequentially adding the dispersant powder and the emollient powder, uniformly stirring to ensure that the sizes of the raw material magnetic domains are uniformly matched, and sealing and placing for 8H.
Example 4, the method for preparing a radial anisotropic magnet material comprises the following specific steps:
step 1: weighing the following raw materials in percentage by weight:
80 parts of first high-performance ferrite raw material, 20 parts of second high-performance ferrite raw material, 1.8 parts of dispersing agent and 0.5 part of hair moistening agent.
Step 2: the first high performance ferrite feedstock is oriented by passing a magnetic field (greater than 8000 gauss).
And step 3: and demagnetizing and drying the first high-performance ferrite raw material subjected to orientation treatment at the high temperature of 450-800 ℃/1H.
And 4, step 4: and (3) crushing and granulating the demagnetized and dried first high-performance ferrite raw material to prepare large magnetic domain particles with the magnetic domains of 20-120 meshes.
And 5: and crushing the second high-performance ferrite raw material to prepare small magnetic domain powder with the magnetic domain of 120-200 meshes.
Step 6: the dispersing agent is prepared by pulverizing Camphora and making into micropowder; the hair moistening agent is prepared by pulverizing a mixture of Camphora and magnesium stearate, and making into micropowder.
And 7: adding the small magnetic domain powder into the large magnetic domain particles, sequentially adding the dispersant powder and the hair rinse powder, mixing for 30 minutes, and sealing and storing for 8H.
Example 5, preparation method of general magnet material:
step 1: weighing the following raw materials in percentage by weight:
high-performance ferrite raw materials, 1.8 parts of dispersing agents and 0.5 part of hair-moistening agents.
Step 2: the high-performance ferrite raw material is made into magnetic powder through magnetic field orientation, demagnetization, crushing and granulation.
And step 3: proportioning the components according to the proportion, mixing for 30 minutes, and sealing and storing for 8H.
The radial magnets of the same specification manufactured by using the composite materials of the embodiments 1 to 4 are compared with the radial magnets manufactured by using the common traditional raw materials in the embodiment 5 in terms of magnetic force performance, and the strength comparison results are as follows:
the result shows that the radial ferrite magnet manufactured by the preparation method of the magnet material has high performance and strength, no cracks between magnetic poles, simple assembly and high precision, and has substantial characteristics and remarkable progress compared with the magnet.
The above description is only a preferred embodiment of the present invention, but not limited thereto; various substitutions and alterations within the technical scope of the present disclosure may be made by those skilled in the art, and are intended to be within the scope of the present disclosure.
Claims (2)
1. A preparation method of a radial polar anisotropic magnet material is characterized by comprising the following steps:
weighing the components according to the proportion of 50-80 parts by weight of the first high-performance ferrite raw material, 20-50 parts by weight of the second high-performance ferrite raw material, 1-2 parts by weight of the dispersing agent and 0.3-0.8 part by weight of the hair moistening agent;
orienting said first high performance ferrite feedstock with a magnetic field greater than 8000 Gauss;
demagnetizing and drying the first high-performance ferrite raw material subjected to orientation treatment at the high temperature of 450-800 ℃/1H;
crushing and granulating the demagnetized and dried first high-performance ferrite raw material to prepare high-performance granulated magnetic powder with a magnetic domain of 20-120 meshes;
crushing the second high-performance ferrite raw material to prepare non-granulated magnetic powder with a magnetic domain of 120-200 meshes;
respectively crushing the dispersing agent and the hair moistening agent into powder;
and adding the non-granulated magnetic powder into the high-performance granulated magnetic powder, sequentially adding dispersant powder and lubricant powder, uniformly stirring to ensure that the magnetic domain size of the raw materials is uniformly matched, and sealing and placing for 8H.
2. A method of producing a radially anisotropic magnet material according to claim 1, wherein said dispersant is a camphor raw material and said emollient is a mixture raw material of camphor and magnesium stearate.
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Citations (6)
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| JPS59170210A (en) * | 1983-03-14 | 1984-09-26 | Hitachi Maxell Ltd | Magnetic metallic powder |
| US20050176885A1 (en) * | 2002-05-14 | 2005-08-11 | Kazuhiro Sekiba | Curable silicone composition for the production of composite soft magnetic materials, and composite soft magnetic materials |
| CN101465188A (en) * | 2008-07-22 | 2009-06-24 | 北矿磁材科技股份有限公司 | Flexible rare-earth cementing magnet and method of manufacturing the same |
| CN104952579A (en) * | 2015-04-15 | 2015-09-30 | 浙江省东阳市诚基电机有限公司 | Pole anisotropic injection-molded neodymium iron boron and preparation method thereof |
| CN106415742A (en) * | 2014-07-22 | 2017-02-15 | 松下知识产权经营株式会社 | Composite magnetic material, coil component using same, and composite magnetic material manufacturing method |
| CN109219857A (en) * | 2016-06-08 | 2019-01-15 | 松下知识产权经营株式会社 | Compressed-core and its manufacturing method |
-
2020
- 2020-07-14 CN CN202010673782.0A patent/CN111710520B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59170210A (en) * | 1983-03-14 | 1984-09-26 | Hitachi Maxell Ltd | Magnetic metallic powder |
| US20050176885A1 (en) * | 2002-05-14 | 2005-08-11 | Kazuhiro Sekiba | Curable silicone composition for the production of composite soft magnetic materials, and composite soft magnetic materials |
| CN101465188A (en) * | 2008-07-22 | 2009-06-24 | 北矿磁材科技股份有限公司 | Flexible rare-earth cementing magnet and method of manufacturing the same |
| CN106415742A (en) * | 2014-07-22 | 2017-02-15 | 松下知识产权经营株式会社 | Composite magnetic material, coil component using same, and composite magnetic material manufacturing method |
| CN104952579A (en) * | 2015-04-15 | 2015-09-30 | 浙江省东阳市诚基电机有限公司 | Pole anisotropic injection-molded neodymium iron boron and preparation method thereof |
| CN109219857A (en) * | 2016-06-08 | 2019-01-15 | 松下知识产权经营株式会社 | Compressed-core and its manufacturing method |
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