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Three-dimensional printing preparation method for iron-based magnetic core

A 3D printing and magnetic core technology, applied in the manufacture of inductors/transformers/magnets, magnetic materials, magnetic objects, etc., can solve the problems of low forming rate of printed products, limited application range, low saturation magnetic induction intensity, etc., and improve the forming rate , Improve the curing speed and shorten the curing time

Inactive Publication Date: 2019-02-22
瞿凌飞
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are still obvious disadvantages in amorphous alloys: the saturation magnetic induction is not high. Compared with other soft magnetic materials with high saturation magnetic induction, the alloy material needs a larger volume under the same working conditions, which greatly limits its scope of application
[0004] In the process of 3D gel printing magnetic material products, chemical methods are used to cure them while printing, but because chemical curing takes a certain amount of time, there is a certain limit to the size of the printed product. If the size of the printed product is large, due to The product is not fully cured during the printing process, and materials continue to accumulate on the incompletely cured printing layer, resulting in defects such as collapse and deformation, which makes the forming rate of the printed product low

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] The main body of the iron-based soft magnetic composite magnetic core of this embodiment is made of the alloy with the following atomic ratio: Fe 68.94 C 0.05 Si 0.5 Cu 9.5 P 0.01 Cr 3 al 12 Ni 6 .

[0021] Weigh each element according to the above atomic ratio for batching; Put the batching ingredients into the boron nitride crucible, try to put the alloy steel or alloy elements with high density and low melting point on it, and then put it into the vacuum induction melting cavity In the induction coil, a mechanical pump and a diffusion pump are used to evacuate, and when the vacuum degree reaches 2.0×10-3 Pa, it is filled with 0.04MPa argon gas with a purity of 99.999% as a protective gas. Then start to smelt the master alloy, turn off the power after one smelting, and continue heating and smelting after complete cooling, the process continues four times, and finally prepares the master alloy ingot.

[0022] The master alloy ingot was broken into small samples...

Embodiment 2

[0027] The main body of the iron-based soft magnetic composite magnetic core of this embodiment is made of the alloy with the following atomic ratio: Fe 62.37 C 0.1 Si 1 Cu 1 0 P 0.03 Cr 3.5 al 15 Ni 8 .

[0028] Weigh each element according to the above atomic ratio for batching; Put the batching ingredients into the boron nitride crucible, try to put the alloy steel or alloy elements with high density and low melting point on it, and then put it into the vacuum induction melting cavity In the induction coil, a mechanical pump and a diffusion pump are used to evacuate, and when the vacuum degree reaches 2.0×10-3 Pa, it is filled with 0.04MPa argon gas with a purity of 99.999% as a protective gas. Then start to smelt the master alloy, turn off the power after one smelting, and continue heating and smelting after complete cooling, the process continues four times, and finally prepares the master alloy ingot.

[0029] The master alloy ingot was broken into small samples...

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Abstract

The invention discloses a 3D printing preparation method for an iron-based magnetic core. By adopting a plurality of elements including Ni, Cr, Cu, Al, P and C which facilitate the overall performanceof iron-based amorphous magnetically soft alloy, the iron-based magnetically soft composite magnetic core is prepared. In the method, chemical curing is combined with light curing, the curing time isshortened, the curing speed of the magnetic material is increased, and therefore, the forming rate of a product is improved.

Description

Technical field [0001] The invention relates to the field of magnetic material manufacturing, in particular to a 3D printing preparation method of an iron-based magnetic core. Background technique [0002] At present, power electronic devices are developing in the direction of energy saving, miniaturization and high precision. Soft magnetic materials with high saturation induction (BS), low loss and high permeability (μ) have become an important direction of research and development in the field of magnetic materials. Amorphous and nanocrystalline soft magnetic alloys have gradually become a hot spot for development by various related companies and research institutions in recent years because of their soft magnetic properties. [0003] Nanocrystalline soft magnetic alloys are Fe-based amorphous alloys prepared by single-roller melt quenching. After heat treatment, uniformly distributed α-Fe grains of about 10nm are precipitated from the amorphous alloys. Since the saturati...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01F41/02H01F1/153B22F3/22B33Y10/00
CPCB22F3/227B33Y10/00H01F1/15308H01F1/1535H01F41/02
Inventor 瞿凌飞
Owner 瞿凌飞
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