Preparation method of magnetic material

A magnetic material and iron powder technology, applied in the field of magnetic material preparation, can solve the problems of poor stability and achieve high stability, low cost and simple operation

Inactive Publication Date: 2020-01-31
南京美帮磁业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the magnetic materials prepared by the magnetic material preparation methods in the prior art often have the problem of poor stability

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Embodiment 1: the preparation method of a kind of magnetic material of present embodiment, comprises the following steps:

[0017] (1) Take 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, mix them and put them into a ball mill for ball milling, and grind to Particle size below 1.5um;

[0018] (2) Add water and stir the ground granular material, press it into a block, put it into the furnace body and fire it at high temperature, control the firing temperature to 1300°C, the firing time is 3.5h, and the advancing speed is 35min / board;

[0019] (3) Break the block material to a particle size of 2.8um, then add 2 parts of iron oxide, 1.5 parts of barium carbonate, 2 parts of strontium carbonate, 2 parts of sodium chlorate, 0.4 parts of lanthanum oxide, 2.5 parts of manganese oxide, 2.5 parts of molybdenum, 1.5 parts of nickel oxide,...

Embodiment 2

[0022] Embodiment 2: the preparation method of a kind of magnetic material of this embodiment, comprises the following steps:

[0023] (1) Take 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, 4.5 parts of quartz stone and mix them into a ball mill for ball milling until Particles below 1.8um;

[0024] (2) Add water and stir the ground granular material, press it into blocks, put it into the furnace body and fire it at high temperature, control the firing temperature to 1350°C, the firing time is 4.5h, and the advancing speed is 45min / board;

[0025] (3) Break the block material to a particle size of 3.5um, then add 6 parts of iron 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, 2.5 parts of nickel oxide, 0.8 parts of cobalt, 8 part...

Embodiment 3

[0028] Embodiment 3: the preparation method of a kind of magnetic material of this embodiment, comprises the following steps:

[0029] (1) Take 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, mix them and put them into a ball mill for ball milling, and grind to Particle size below 1.6um;

[0030] (2) Add water and stir the ground granular material, press it into a block, put it into the furnace body and fire it at a high temperature, control the firing temperature to 1320°C, the firing time is 4 hours, and the advancing speed is 40min / board;

[0031] (3) Break the block material to a particle size of 3um, then add 4 parts of iron oxide, 2 parts of barium carbonate, 4 parts of strontium carbonate, 3 parts of sodium chlorate, 0.8 parts of lanthanum oxide, 3 parts of manganese oxide, molybdenum oxide 2.8 parts, 2.2 parts of nickel oxide, 0....

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PUM

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Abstract

The invention discloses a preparation method of a magnetic material. The preparation method comprises the steps that iron powder, neodymium powder, boron powder, copper powder, magnesium powder, epoxyresin, and quartz stone are mixed and put into a ball mill for ball milling; the ground particulate materials are added with water, stirred, pressed into a block and put into a furnace for high temperature firing; the block material is crushed, added with iron oxide, barium carbonate, strontium carbonate, sodium chlorate, lanthanum oxide, manganese oxide, molybdenum oxide, nickel oxide, cobalt, kaolin and zirconium tetrafluoride and mixed; the mixed material is put into the ball mill for secondary grinding, and then the slurry is dehydrated; and the dehydrated material is pressed into a greenbody, sintered, and ground into the magnetic material product. The magnetic material made by the invention has the advantages of high stability, simple operation and low cost.

Description

technical field [0001] The invention relates to the field of magnetic materials, in particular to a preparation method of magnetic materials. Background technique [0002] The magnetic material is a composite oxide sintered non-metallic magnetic material, which is generally divided into soft ferrite and permanent ferrite magnetic materials. Permanent ferrite magnetic materials also include barium ferrite and strontium ferrite, which have high resistivity and belong to the semiconductor type, so the eddy current loss is small and the coercive force is large, which can be effectively applied in the magnetic circuit of large air gap, especially Suitable for permanent magnets for small generators and motors. However, the magnetic material prepared by the magnetic material preparation method in the prior art often has the problem of poor stability. Contents of the invention [0003] Purpose of the invention: Aiming at the deficiencies and defects of the prior art, the present...

Claims

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Application Information

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IPC IPC(8): H01F1/057H01F41/02
CPCH01F1/0576H01F1/0577H01F41/0253H01F41/0266
Inventor 陈杰张小军方述明
Owner 南京美帮磁业有限公司
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