High-performance nano-crystalline soft magnetic composite material and preparation method thereof

A technology of nanocrystalline soft magnetic and composite materials, applied in the field of soft magnetic materials, can solve the problems of high cost, waste of parts raw materials, low efficiency, etc., and achieve the effect of improving injection molding performance and dispersion uniformity

Inactive Publication Date: 2012-07-04
南京深宁磁电有限公司 +2
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  • Summary
  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention proposes a high-performance nanocrystalline soft magnetic composite material and its preparation method. Its purpose is to overcome the defects of large waste of raw

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0008] Example 1

[0009] A high-performance nanocrystalline soft magnetic composite material, characterized in that the raw material and mass percentage are Fe:Cr:Si:B:C:polypropylene:lubricant:coupling agent:compatibility agent:melt index regulator=59: 8:8:4:1:8:4:3:3:2.

[0010] The preparation process is: primary batching→high-speed water atomization→passivation treatment→annealing treatment→primary ball milling→secondary ball milling→secondary batching→third ball milling→third batching→high-speed mixing→extrusion granulation→injection molding.

[0011] 1) One batching, add one or more of Fe, Cr, Si, B, C, iron silicon powder, iron silicon aluminum powder, iron nickel powder, iron nickel molybdenum powder;

[0012] 2) The high-speed water atomization process is: metal raw material → smelting → tundish → high pressure nozzle → powder collection → washing and filtering → reduction → screening. Nozzle diameter (D) is 1mm, atomizing water pressure No. 1 water pressure = 10MPa, No. 2 ...

Example Embodiment

[0025] Example 2

[0026] A high-performance nanocrystalline soft magnetic composite material, characterized in that the raw material and mass percentage are Fe:Cr:Si:B:C:polypropylene:lubricant:coupling agent:compatibility agent:melting finger regulator=40: 12:11:6:2:10:5:4:5:5.

[0027] The preparation process is: primary batching→high-speed water atomization→passivation treatment→annealing treatment→primary ball milling→secondary ball milling→secondary batching→third ball milling→third batching→high-speed mixing→extrusion granulation→injection molding.

[0028] 1) One batching, add one or more of Fe, Cr, Si, B, C, iron silicon powder, iron silicon aluminum powder, iron nickel powder, iron nickel molybdenum powder;

[0029] 2) The high-speed water atomization process is: metal raw material → smelting → tundish → high pressure nozzle → powder collection → washing and filtering → reduction → screening. Nozzle diameter (D) is 1.5mm, atomizing water pressure No. 1 water pressure=15MPa,...

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Abstract

The invention relates to a high-performance nano-crystalline soft magnetic composite material and a preparation method thereof. The high-performance nano-crystalline soft magnetic composite material is characterized in that the proportion of raw materials Fe: Cr: Si: B: C: polypropylene: lubricant: coupling agent: melt index regulator is equal to (40-59):(8-40): (8-20):(4-10):(1-5):(8-50):(4-10):(3-5):(3-8):(2-8) by mass percentage. The preparation method includes primary blending, high-speed water atomization, passivation, annealing process, primary grinding by a ball mill, secondary grinding by the ball mill, secondary blending, tertiary grinding by the ball mill, tertiary blending, high-speed mixing, granulating by extrusion and injection molding. The preparation method of the high-performance nano-crystalline soft magnetic composite material is suitable for production of magnetic circuit elements complicated in shape and high in precision requirements. The material prepared by the preparation method has the advantages of high magnetic conductivity, high-saturated magnetic induction strength, low coercivity and loss and high stability.

Description

technical field [0001] The invention relates to the field of soft magnetic materials in metal functional materials, in particular to a high-performance nanocrystalline soft magnetic composite material capable of injection molding. Background technique [0002] The development of soft magnetic materials has gone through the course of crystalline, amorphous and nanocrystalline states. Amorphous soft magnetic material is a new kind of magnetic material, which has the characteristics of high magnetic permeability, high saturation magnetic induction, low coercive force, low loss and high stability. In terms of soft magnetic properties, nanocrystalline soft magnetic and maintain the high saturation magnetic induction value of iron-based amorphous alloy. At the same time, the initial magnetic permeability and medium and high frequency characteristics have reached or exceeded the level of Momo alloy and Co-based amorphous material. Soft magnetic materials are widely used, mainly u...

Claims

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Application Information

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IPC IPC(8): H01F1/12B22F3/115
Inventor 于万林王坤明吕延吕明李行
Owner 南京深宁磁电有限公司
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