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Method for manufacturing broadband high-conductivity manganese-zinc ferrite magnetic core

A manganese-zinc ferrite and manufacturing method technology, applied in the direction of inductance/transformer/magnet manufacturing, inorganic material magnetism, electrical components, etc., can solve problems such as loss, frequency characteristics, and unsatisfactory Curie temperature

Inactive Publication Date: 2012-02-22
临沂春光磁业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

my country has used the traditional oxide method to develop high magnetic permeability materials for more than 40 years. So far, the high magnetic permeability materials produced by the oxide method can only reach about 10,000, and the performance indicators of the materials, such as Loss, frequency characteristics, Curie temperature, etc. are unsatisfactory

Method used

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  • Method for manufacturing broadband high-conductivity manganese-zinc ferrite magnetic core
  • Method for manufacturing broadband high-conductivity manganese-zinc ferrite magnetic core

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Take 52.33 mol% Fe 2 o 3 , 21.88 mol% and 25.79 mol% of ZnO, as the main component for batching; before the spray granulation, add 66ppm of TiO to the calcined powder respectively 2 、MoO 3 , V 2 o 5 、 Bi 2 o 3 , CaCO 3 , SiO 2 , Nb 2 o 5 . Formula test, dry process, pre-calcination, crushing, particle size analysis, addition of additives, component deviation detection, spray granulation, compression molding, densification sintering, sintering temperature, curve, oxygen partial pressure control, finishing, performance testing And packaging processing to obtain finished products.

Embodiment 2

[0018] Take 52 mol% Fe 2 o 3 , 22 mol% and 26 mol% of ZnO, as the main component for batching; before the spray granulation, add 68ppm of TiO to the calcined powder respectively 2 、MoO 3 , V 2 o 5 、Bi 2 o 3 , CaCO 3 , SiO 2 , Nb 2 o 5 . Formula test, dry process, pre-calcination, crushing, particle size analysis, addition of additives, component deviation detection, spray granulation, compression molding, densification sintering, sintering temperature, curve, oxygen partial pressure control, finishing, performance testing And packaging processing to obtain finished products.

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Abstract

The invention discloses a method for manufacturing a broadband high-conductivity manganese-zinc ferrite magnetic core, which belongs to the technical field of magnetic materials. The method comprises the steps of blending according to a specified prescription, dry process, presintering, pulverization, granularity analysis, additive addition, component deviation detection, spray granulation, compression moulding, densification sintering, control over sintering temperature, curve and oxygen partial pressure, finish machining, performance detection and package processing. The method can be used for stably manufacturing a manganese-zinc ferrite magnetic core material with the magnetic conductivity reaching 12K, the Curie temperature reaching 125 DEG C and the use frequency reaching 300KHz and meet the increasing demand of light, thin, miniature, high-performance and high-density electronic components.

Description

[0001] technical field [0002] The invention relates to the technical field of magnetic materials, in particular to a method for manufacturing a ferrite core. Background technique [0003] High-permeability ferrite magnetic powder and magnetic core are essential electronic components for miniaturization and lightening of inductors, filters, pulse transformers and other products in electronic equipment such as program-controlled communication, digital technology, and network communication color TVs. Materials, continuously improving the initial magnetic permeability in magnetic materials has always been the pursuit of engineers and manufacturers engaged in this profession. my country has used the traditional oxide method to develop high magnetic permeability materials for more than 40 years. So far, the high magnetic permeability materials produced by the oxide method can only reach about 10,000, and the performance indicators of the materials, such as Loss, frequency charac...

Claims

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Application Information

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IPC IPC(8): H01F41/02H01F1/34C04B35/622
Inventor 宋兴连明永青王刚力
Owner 临沂春光磁业有限公司