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Method for making novel ferrite/iron-base composite material soft magnetic-powder core

An iron-based composite material, soft magnetic powder core technology, applied in the direction of inorganic material magnetism, inductor/transformer/magnet manufacturing, electrical components, etc. It can improve the comprehensive performance index parameters, the bonding rate is large, and the shrinkage rate is small.

Active Publication Date: 2007-06-13
安徽众恒复合材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For the powder core prepared by metal powder, due to the poor temperature resistance of the organic resin inside, the powder core cannot be subjected to high temperature heat treatment, so the soft magnetic properties of the prepared powder core are not good, which affects the practical application of the powder core

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0007] Use "(purity 98%, 200 mesh) iron powder 60% + manganese zinc ferrite powder (particle size 200 mesh) 40%" to mix, add tetraethyl orthosilicate glue with 5% powder weight, and fully Grinding, so that the surface of the powder is fully covered by glue; the above-mentioned mixed powder is directly pressed into a ring-shaped powder core shape in the mold, and the pressing pressure is ≥ 100Mpa; under the protection of argon, the powder core is heat-treated at a temperature of 1200 ° C, and the holding time is 1 hour; the heat-treated powder core is dipped in epoxy resin type insulating glue for 1 hour; after the insulating glue is cured, use the brushing method to brush a layer of epoxy resin glue with a thickness of about 1mm on the outer layer of the powder core, etc. After the glue is completely cured, pack the powder core.

Embodiment 2

[0009] Use "(purity 98%, 200 mesh) iron powder 60%+manganese zinc ferrite powder (particle size 200 mesh) 40%" to mix, add water glass glue with 3% powder weight, fully grind in the container, make The surface of the powder is fully covered with glue; the above-mentioned mixed powder is directly pressed into the shape of a ring-shaped powder core in the mold, and the pressing pressure is ≥100Mpa; under the protection of argon, the powder core is heat-treated at a temperature of 1200°C and the holding time is 1 hour; The heat-treated powder core is immersed in epoxy resin type insulating glue for 1 hour; after the insulating glue is cured, brush a layer of epoxy resin glue with a thickness of about 1mm on the outer layer of the powder core by brushing method, and wait until the glue is completely cured Finally, the powder core is packed.

Embodiment 3

[0011] Use "(purity 98%, 200 mesh) iron powder 60% + manganese zinc ferrite powder (particle size 200 mesh) 40%" to mix, add tetraethyl orthosilicate glue with 5% powder weight, and fully Grinding, so that the surface of the powder is fully covered with glue; the above-mentioned mixed powder is directly pressed into the shape of an annular powder core in the mold, and the pressing pressure is ≥ 100Mpa; under the protection of argon, the powder core is heat-treated at a temperature of 1000 ° C, and the holding time is 3 hours; the heat-treated powder core is dipped in epoxy resin type insulating glue for 1 hour; after the insulating glue is cured, use the brushing method to brush a layer of epoxy resin glue with a thickness of about 1mm on the outer layer of the powder core, etc. After the glue is completely cured, pack the powder core.

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Abstract

A preparation method for soft magnetic powder cores, a kind of new ferrite / ferreous-base compound material. Its power cores comprises the following materials with the given mass percentage: the 70~90% powder under 160 meshes, adhesive 1~30%; the powder materials comprises 10~100% ferreous powder and 0~90% MnZn ferrite powder, the adhesive is water glass adhesive and tetraethyl(ortho)silicate, which is made through mixing, molding, heat treatment, glue immersing, paint immersing and wrapping. The advantages of the invention are : (1) advanced formula design; (2) insulation adhesive is no toxin, no taste, less shrinkage rate, high bonding rate with powder; after immersing treatment, the quality coefficient value of powder cores is increased; (3) improves the integrated performance index parameter of magnetic powder cores, and the consistency of the performance parameter of product is guaranteed, the quality's conformity rate is improved too.

Description

technical field [0001] The invention relates to a method for preparing a novel ferrite / iron-based composite material soft magnetic powder core. Background technique [0002] At present, soft magnetic powder cores are mainly prepared by pure iron powder, sendust powder, iron-nickel alloy powder and ferrite powder at home and abroad. The preparation method is generally that the powder is mixed with an organic resin and then pressed into shape. For ferrite powder, it is sintered at high temperature after pressing. For powder cores made of metal powder, due to the poor temperature resistance of the organic resin inside, the powder cores cannot be subjected to high-temperature heat treatment, so the soft magnetic properties of the prepared powder cores are not good, which affects the practical application of the powder cores. Contents of the invention [0003] The purpose of the present invention is to provide a method for prepa...

Claims

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Application Information

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IPC IPC(8): H01F1/36H01F41/02
Inventor 朱正吼
Owner 安徽众恒复合材料科技有限公司
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