CN110739112A - Preparation method of magnetic materials - Google Patents

Preparation method of magnetic materials Download PDF

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Publication number
CN110739112A
CN110739112A CN201810796359.2A CN201810796359A CN110739112A CN 110739112 A CN110739112 A CN 110739112A CN 201810796359 A CN201810796359 A CN 201810796359A CN 110739112 A CN110739112 A CN 110739112A
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China
Prior art keywords
parts
powder
oxide
grinding
magnetic materials
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Application number
CN201810796359.2A
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Chinese (zh)
Inventor
陈杰
张小军
方述明
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Nanjing Mei Bang Magnetic Industry Co Ltd
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Nanjing Mei Bang Magnetic Industry Co Ltd
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Priority to CN201810796359.2A priority Critical patent/CN110739112A/en
Publication of CN110739112A publication Critical patent/CN110739112A/en
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
    • H01F1/01—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials
    • H01F1/03—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity
    • H01F1/032—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials
    • H01F1/04—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials metals or alloys
    • H01F1/047—Alloys characterised by their composition
    • H01F1/053—Alloys characterised by their composition containing rare earth metals
    • H01F1/055—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5
    • H01F1/057—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 and IIIa elements, e.g. Nd2Fe14B
    • H01F1/0571—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 and IIIa elements, e.g. Nd2Fe14B in the form of particles, e.g. rapid quenched powders or ribbon flakes
    • H01F1/0575—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 and IIIa elements, e.g. Nd2Fe14B in the form of particles, e.g. rapid quenched powders or ribbon flakes pressed, sintered or bonded together
    • H01F1/0576—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 and IIIa elements, e.g. Nd2Fe14B in the form of particles, e.g. rapid quenched powders or ribbon flakes pressed, sintered or bonded together pressed, e.g. hot working
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
    • H01F1/01—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials
    • H01F1/03—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity
    • H01F1/032—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials
    • H01F1/04—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials metals or alloys
    • H01F1/047—Alloys characterised by their composition
    • H01F1/053—Alloys characterised by their composition containing rare earth metals
    • H01F1/055—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5
    • H01F1/057—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 and IIIa elements, e.g. Nd2Fe14B
    • H01F1/0571—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 and IIIa elements, e.g. Nd2Fe14B in the form of particles, e.g. rapid quenched powders or ribbon flakes
    • H01F1/0575—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 and IIIa elements, e.g. Nd2Fe14B in the form of particles, e.g. rapid quenched powders or ribbon flakes pressed, sintered or bonded together
    • H01F1/0577—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 and IIIa elements, e.g. Nd2Fe14B in the form of particles, e.g. rapid quenched powders or ribbon flakes pressed, sintered or bonded together sintered
    • 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
    • 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
    • H01F41/0266—Moulding; Pressing

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Hard Magnetic Materials (AREA)

Abstract

A process for preparing magnetic materials includes such steps as mixing iron powder, neodymium powder, boron powder, copper powder, magnesium powder, epoxy resin and quartz stone, ball grinding, adding water to the particles, stirring, pressing, high-temp calcining in furnace, breaking, adding iron oxide, barium carbonate, strontium carbonate, sodium chlorate, lanthanum oxide, manganese oxide, molybdenum oxide, nickel oxide, cobalt, kaolin and zirconium tetrafluoride, mixing, grinding, dewatering, pressing, sintering and grinding.

Description

Preparation method of magnetic materials
Technical Field
The invention relates to the field of magnetic materials, in particular to a preparation method of magnetic materials.
Background
The magnetic material is kinds of composite oxide sintered body non-metal magnetic material, is divided into soft magnetic ferrite and permanent magnetic ferrite magnetic material, the permanent magnetic ferrite magnetic material also comprises barium ferrite and strontium ferrite, the resistivity is high, the material belongs to semiconductor type, so the eddy current loss is small, the coercive force is large, the material can be effectively applied to a magnetic circuit with large air gap, and is particularly suitable for being used as a permanent magnet of a small generator and a motor.
Disclosure of Invention
Aiming at the defects and shortcomings of the prior art, the invention provides a preparation method of magnetic materials, which has high stability, simple operation and low cost.
The preparation method of magnetic materials is characterized by comprising the following steps:
(1) mixing 40-50 parts of iron powder, 15-25 parts of neodymium powder, 1-3 parts of boron powder, 0.4-0.8 part of copper powder, 0.3-0.5 part of magnesium powder, 3-12 parts of epoxy resin and 2.5-4.5 parts of quartz, putting into a ball mill for ball milling, and grinding until the particle size is below 1.5-1.8 um;
(2) adding water into the ground granular materials, stirring, pressing into blocks, placing into a furnace body, and firing at a high temperature, wherein the firing temperature is controlled to be 1300-1350 ℃, the firing time is 3.5-4.5 h, and the propelling speed is 35-45min per plate;
(3) crushing the blocking material to a particle size of 2.8-3.5 um, adding 2-6 parts of ferric oxide, 1.5-2.5 parts of barium carbonate, 2-6 parts of strontium carbonate, 2-4 parts of sodium chlorate, 0.4-1.2 parts of lanthanum oxide, 2.5-3.5 parts of manganese oxide, 2.5-3.5 parts of molybdenum oxide, 1.5-2.5 parts of nickel oxide, 0.6-0.8 part of cobalt, 4-8 parts of kaolin and 1-3 parts of zirconium tetrafluoride, and uniformly mixing;
(4) putting the uniformly mixed material into a ball mill for secondary grinding, and dehydrating the slurry after grinding to the particle size of 1-1.5 um, wherein the water content is controlled to be 32-34%;
(5) and pressing the dehydrated material into a blank, sintering, and grinding to obtain the magnetic material product.
Wherein, in the step (1), 40 parts of iron powder, 15 parts of neodymium powder, 1 part of boron powder, 0.4 part of copper powder, 0.3 part of magnesium powder, 3 parts of epoxy resin and 2.5 parts of quartz stone are taken.
Wherein, in the step (1), 50 parts of iron powder, 25 parts of neodymium powder, 3 parts of boron powder, 0.8 part of copper powder, 0.5 part of magnesium powder, 12 parts of epoxy resin and 4.5 parts of quartz stone are taken.
Wherein, in the step (3), 2 parts of ferric oxide, 1.5 parts of barium carbonate, 2 parts of strontium carbonate, 2 parts of sodium chlorate, 0.4 part of lanthanum oxide, 2.5 parts of manganese oxide, 2.5 parts of molybdenum oxide, 1.5 parts of nickel oxide, 0.6 part of cobalt, 4 parts of kaolin and 1 part of zirconium tetrafluoride are taken.
Wherein, in the step (3), 6 parts of ferric oxide, 2.5 parts of barium carbonate, 6 parts of strontium carbonate, 4 parts of sodium chlorate, 1.2 parts of lanthanum oxide, 3.5 parts of manganese oxide, 3.5 parts of molybdenum oxide, 2.5 parts of nickel oxide, 0.8 part of cobalt, 8 parts of kaolin and 3 parts of zirconium tetrafluoride are taken.
Has the advantages that: compared with the prior art, the invention has the following remarkable advantages: the invention relates to a brand-new preparation method designed for magnetic materials, and the prepared magnetic materials have high stability. Meanwhile, the method has the characteristics of simple operation and low cost.
Detailed Description
The technical solution of the present invention is further described in step with reference to the specific embodiments.
Example 1. the preparation method of the magnetic materials of this example includes the following steps:
(1) mixing 40 parts of iron powder, 15 parts of neodymium powder, 1 part of boron powder, 0.4 part of copper powder, 0.3 part of magnesium powder, 3 parts of epoxy resin and 2.5 parts of quartz stone, and then putting the mixture into a ball mill for ball milling until the particle size is below 1.5 microns;
(2) adding water into the ground granular materials, stirring, pressing into blocks, placing into a furnace body, and firing at a high temperature, wherein the firing temperature is controlled at 1300 ℃, the firing time is 3.5h, and the propelling speed is 35 min/plate;
(3) crushing the blocking material to a particle size of 2.8um, adding 2 parts of ferric oxide, 1.5 parts of barium carbonate, 2 parts of strontium carbonate, 2 parts of sodium chlorate, 0.4 part of lanthanum oxide, 2.5 parts of manganese oxide, 2.5 parts of molybdenum oxide, 1.5 parts of nickel oxide, 0.6 part of cobalt, 4 parts of kaolin and 1 part of zirconium tetrafluoride, and uniformly mixing;
(4) putting the uniformly mixed material into a ball mill for secondary grinding, and dehydrating the slurry after grinding to the particle size of 1um, wherein the water content is controlled to be 32%;
(5) and pressing the dehydrated material into a blank, sintering, and grinding to obtain the magnetic material product.
Embodiment 2 the method for preparing the magnetic materials of this embodiment includes the following steps:
(1) mixing 50 parts of iron powder, 25 parts of neodymium powder, 3 parts of boron powder, 0.8 part of copper powder, 0.5 part of magnesium powder, 12 parts of epoxy resin and 4.5 parts of quartz stone, and then putting the mixture into a ball mill for ball milling until the particle size is below 1.8 um;
(2) adding water into the ground granular materials, stirring, pressing into blocks, placing into a furnace body, and firing at high temperature, wherein the firing temperature is controlled at 1350 ℃, the firing time is 4.5h, and the propelling speed is 45 min/plate;
(3) crushing the blocking material to 3.5um, adding 6 parts of ferric oxide, 2.5 parts of barium carbonate, 6 parts of strontium carbonate, 4 parts of sodium chlorate, 1.2 parts of lanthanum oxide, 3.5 parts of manganese oxide, 3.5 parts of molybdenum oxide, 2.5 parts of nickel oxide, 0.8 part of cobalt, 8 parts of kaolin and 3 parts of zirconium tetrafluoride, and uniformly mixing;
(4) putting the uniformly mixed material into a ball mill for secondary grinding, and dehydrating the slurry after grinding to the particle size of 1.5um, wherein the water content is controlled to be 34%;
(5) and pressing the dehydrated material into a blank, sintering, and grinding to obtain the magnetic material product.
Embodiment 3. the preparation method of the magnetic materials of this embodiment includes the following steps:
(1) mixing 45 parts of iron powder, 20 parts of neodymium powder, 2 parts of boron powder, 0.6 part of copper powder, 0.4 part of magnesium powder, 8 parts of epoxy resin and 4 parts of quartz stone, and then putting the mixture into a ball mill for ball milling until the particle size is below 1.6 um;
(2) adding water into the ground granular materials, stirring, pressing into blocks, placing into a furnace body, and firing at a high temperature, wherein the firing temperature is controlled at 1320 ℃, the firing time is 4h, and the propelling speed is 40 min/plate;
(3) crushing the blocking material to a particle size of 3 microns, adding 4 parts of ferric oxide, 2 parts of barium carbonate, 4 parts of strontium carbonate, 3 parts of sodium chlorate, 0.8 part of lanthanum oxide, 3 parts of manganese oxide, 2.8 parts of molybdenum oxide, 2.2 parts of nickel oxide, 0.7 part of cobalt, 5 parts of kaolin and 2 parts of zirconium tetrafluoride, and uniformly mixing;
(4) putting the uniformly mixed material into a ball mill for secondary grinding, and dehydrating the slurry after grinding to the particle size of 1.2um, wherein the water content is controlled to be 33%;
(5) and pressing the dehydrated material into a blank, sintering, and grinding to obtain the magnetic material product.

Claims (5)

  1. The preparation method of the magnetic material of 1 and kinds is characterized by comprising the following steps:
    (1) mixing 40-50 parts of iron powder, 15-25 parts of neodymium powder, 1-3 parts of boron powder, 0.4-0.8 part of copper powder, 0.3-0.5 part of magnesium powder, 3-12 parts of epoxy resin and 2.5-4.5 parts of quartz, putting into a ball mill for ball milling, and grinding until the particle size is below 1.5-1.8 um;
    (2) adding water into the ground granular materials, stirring, pressing into blocks, placing into a furnace body, and firing at a high temperature, wherein the firing temperature is controlled to be 1300-1350 ℃, the firing time is 3.5-4.5 h, and the propelling speed is 35-45min per plate;
    (3) crushing the blocking material to a particle size of 2.8-3.5 um, adding 2-6 parts of ferric oxide, 1.5-2.5 parts of barium carbonate, 2-6 parts of strontium carbonate, 2-4 parts of sodium chlorate, 0.4-1.2 parts of lanthanum oxide, 2.5-3.5 parts of manganese oxide, 2.5-3.5 parts of molybdenum oxide, 1.5-2.5 parts of nickel oxide, 0.6-0.8 part of cobalt, 4-8 parts of kaolin and 1-3 parts of zirconium tetrafluoride, and uniformly mixing;
    (4) putting the uniformly mixed material into a ball mill for secondary grinding, and dehydrating the slurry after grinding to the particle size of 1-1.5 um, wherein the water content is controlled to be 32-34%;
    (5) and pressing the dehydrated material into a blank, sintering, and grinding to obtain the magnetic material product.
  2. 2. The method for preparing kinds of magnetic materials as claimed in claim 1, wherein 40 parts of iron powder, 15 parts of neodymium powder, 1 part of boron powder, 0.4 part of copper powder, 0.3 part of magnesium powder, 3 parts of epoxy resin and 2.5 parts of quartz stone are used in step (1).
  3. 3. The method for preparing kinds of magnetic materials as claimed in claim 1, wherein 50 parts of iron powder, 25 parts of neodymium powder, 3 parts of boron powder, 0.8 part of copper powder, 0.5 part of magnesium powder, 12 parts of epoxy resin and 4.5 parts of quartz stone are used in step (1).
  4. 4. The method for preparing kinds of magnetic materials according to claim 1, wherein in step (3), 2 parts of ferric oxide, 1.5 parts of barium carbonate, 2 parts of strontium carbonate, 2 parts of sodium chlorate, 0.4 part of lanthanum oxide, 2.5 parts of manganese oxide, 2.5 parts of molybdenum oxide, 1.5 parts of nickel oxide, 0.6 part of cobalt, 4 parts of kaolin, and 1 part of zirconium tetrafluoride are taken.
  5. 5. The method for preparing kinds of magnetic materials according to claim 1, wherein the step (3) includes taking 6 parts of ferric oxide, 2.5 parts of barium carbonate, 6 parts of strontium carbonate, 4 parts of sodium chlorate, 1.2 parts of lanthanum oxide, 3.5 parts of manganese oxide, 3.5 parts of molybdenum oxide, 2.5 parts of nickel oxide, 0.8 part of cobalt, 8 parts of kaolin, and 3 parts of zirconium tetrafluoride.
CN201810796359.2A 2018-07-19 2018-07-19 Preparation method of magnetic materials Withdrawn CN110739112A (en)

Priority Applications (1)

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CN201810796359.2A CN110739112A (en) 2018-07-19 2018-07-19 Preparation method of magnetic materials

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201810796359.2A CN110739112A (en) 2018-07-19 2018-07-19 Preparation method of magnetic materials

Publications (1)

Publication Number Publication Date
CN110739112A true CN110739112A (en) 2020-01-31

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Country Status (1)

Country Link
CN (1) CN110739112A (en)

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