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Soft magnetic composite magnetic ring and preparation method therefor

A soft magnetic compound and magnetic ring technology, applied in the field of magnetoelectricity, can solve the problems of high Bs value, low cost, high magnetic permeability, etc., and achieve the effect of excellent DC superposition performance and high Bs value

Inactive Publication Date: 2018-02-16
WUXI SPINEL MAGNETICS +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, manganese zinc ferrite has high magnetic permeability, low power loss and low cost. The application frequency is generally below 300KHz. Iron powder core has low magnetic permeability and high cost, but its Bs value is very high, and due to its production process The reason is that the air gap is evenly distributed and its superposition performance is very good
At present, there is no magnetic ring product in the market that takes into account the advantages of both.

Method used

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  • Soft magnetic composite magnetic ring and preparation method therefor

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Effect test

Embodiment 1

[0019] Raw materials: 120 mesh to 200 mesh sendust powder, manganese zinc ferrite powder with a magnetic permeability of 3000.

[0020] Preparation of ferrite magnetic ring: manganese zinc ferrite powder with magnetic permeability of 3000, sintering temperature of 1340°C, standard sintering curve, and the size of the prepared magnetic ring is 25*15*6.

[0021] Molding: Put 120-mesh to 200-mesh sendust aluminum powder into passivation treatment, put it into the H28*12*10 mold, according to the ratio of the height dimension of the mold cavity filler to the thickness dimension of the pressed blank (charging ratio) 1.4, put 2.8mm thick sendust powder; then place the sintered ferrite magnetic ring on the sendust powder; then use sendust powder to scrape the mold cavity. Press 20T pressure per square centimeter, and the finished product density is controlled at 5.5g / cm 3 .

[0022] Heat treatment: The pressed composite magnetic ring is heat treated in an argon protective atmospher...

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Abstract

The invention discloses a soft magnetic composite magnetic ring and a preparation method therefor. The soft magnetic composite magnetic ring is characterized in that a zinc-containing type magnetic ring is taken as an annular core; an iron element type material is pressed on the periphery of the annular core; the iron element type material is 1mm or above in thickness; and the soft magnetic composite magnetic ring is 200-1,200 in magnetic conductivity and 600mT or above in Bs value. The composite magnetic ring is high in magnetic conductivity and Bs value, and can be applicable to a high-current multi-signal environment.

Description

technical field [0001] The invention relates to the field of magnetoelectricity, in particular to a soft magnetic composite magnetic ring and a preparation method thereof. Background technique [0002] Common soft magnetic rings include ferrite magnetic rings, sendust magnetic rings, iron powder core magnetic rings and other materials. Their characteristics are different, and their application markets are also different. For example, manganese zinc ferrite has high magnetic permeability, low power loss and low cost. The application frequency is generally below 300KHz. Iron powder core has low magnetic permeability and high cost, but its Bs value is very high, and due to its production process The reason is that the air gap is evenly distributed and its superposition performance is very good. At present, there is no magnetic ring product with both advantages in performance. Contents of the invention [0003] In order to solve the above-mentioned problems in the prior art,...

Claims

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Application Information

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IPC IPC(8): H01F3/00H01F41/02B22F7/06
CPCB22F7/06H01F3/00H01F41/0246
Inventor 常彪
Owner WUXI SPINEL MAGNETICS
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