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Method for manufacturing powder magnetic core by insulating and curing amorphous powder at room temperature

A technology of amorphous powder and powder, which is applied in the field of insulating and solidifying amorphous powder at room temperature to manufacture powder magnetic cores, can solve the problems of crystallization of amorphous alloy powder, affecting the performance of magnetic cores, complex processes, etc., and prevent crystallization , promote rapid prototyping, and have a wide range of ratios

Inactive Publication Date: 2021-02-09
辽宁秉航非晶科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The process of the above method is relatively complicated, the cost is high, and the process is difficult to control. Heat treatment at a certain temperature will easily cause the crystallization of the amorphous alloy powder, which will affect the performance of the magnetic core.

Method used

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  • Method for manufacturing powder magnetic core by insulating and curing amorphous powder at room temperature

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] [Example 1] FeSiBPCu powder magnetic core

[0022] Step 1: Material preparation

[0023] 1) Preparation of photosensitive resin: composed of resin monomer and photoinitiator, the viscosity is 150-200mpa.s at 25°C, the shrinkage rate is 1.05-1.25%, the curing wavelength is 355-410nm, and the tensile strength is 36-52Mpa. The hardness is 84D, and the elongation at break is 11-20%.

[0024] 2) Amorphous powder preparation: heat-treat the amorphous strip with the composition FeSiBPCu in a vacuum heat treatment furnace, then cool with the furnace, and carry out embrittlement treatment; the treated strip is ball-milled in a ball mill, and then the prepared Sieve the obtained powder to obtain amorphous alloy powder with different particle sizes; use a sieve to screen the amorphous alloy powder according to the particle size, and then mix 60 to 90% of the first powder that passes through -400 mesh, and passes through -270 to -400 mesh The target second powder is 10-40% to mak...

Embodiment 2

[0032] [Example 2] FeSiBPCu+FeSiB powder magnetic core

[0033] Step 1: Material preparation

[0034] 1) Preparation of photosensitive resin: composed of resin monomer and photoinitiator, the viscosity is 150-200mpa.s at 25°C, the shrinkage rate is 1.05-1.25%, the curing wavelength is 355-410nm, and the tensile strength is 36-52Mpa. The hardness is 84D, and the elongation at break is 11-20%.

[0035] 2) Preparation of amorphous powder: FeSiBPCu powder and FeSiB amorphous powder were weighed and mixed in a ratio of 2:1 to form a mixed powder, wherein the preparation of FeSiBPCu powder was the same as in Example 1.

[0036] Step 2: Stir the ingredients

[0037] Weigh 85% of the mixed powder and 15% of the photosensitive resin photosensitive resin according to mass percentage, put them into a light-curing rapid prototyping machine and stir for 10 minutes to prepare a mixture.

[0038] Step 3: Coating operation

[0039] The mixture was uniformly and flatly coated on the light-...

Embodiment 3

[0043] [Example 3] FeSiBCuNb nanocrystalline powder magnetic core

[0044] Step 1: Material preparation

[0045] 1) Preparation of photosensitive resin: composed of resin monomer and photoinitiator, the viscosity is 150-200mpa.s at 25°C, the shrinkage rate is 1.05-1.25%, the curing wavelength is 355-410nm, and the tensile strength is 36-52Mpa. The hardness is 84D, and the elongation at break is 11-20%.

[0046] 2) Preparation of amorphous powder: FeSiBCuNb nanocrystalline powder was weighed, and the preparation of the powder was the same as in Example 1.

[0047] Step 2: Stir the ingredients

[0048] Weigh 87% of the FeSiBCuNb nanocrystalline powder and 13% of the photosensitive resin photosensitive resin according to mass percentage, put them into a photocuring rapid prototyping machine and stir for 9 minutes to prepare a mixture.

[0049] Step 3: Coating operation

[0050] The mixture is evenly and flatly coated on the light-curing molding vessel, and the coating thickne...

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Abstract

The invention relates to a method for manufacturing a powder magnetic core by insulating and curing amorphous powder at room temperature, which adopts a thin-layer accumulation layered illumination curing process after mixing the amorphous powder with photosensitive resin, and comprises the following steps of: 1) weighing the amorphous powder and the photosensitive resin in proportion, putting theamorphous powder and the photosensitive resin into a photo-curing rapid forming machine, and stirring for 5-10 minutes to obtain a mixture; 2) uniformly and flatly coating the mixture on a photocuring molding vessel, wherein the coating thickness is 0.01 mm-1 mm; 3) irradiating and curing for 10-15 minutes by adopting an ultraviolet light source; and (4) repeating the steps (2) and (3) until therequired powder magnetic core is prepared, thereby solving the problem of product crystallization easily caused by the conventional hot working process, and having the characteristics of simple and convenient process control, energy saving, convenience, rapidness and the like.

Description

technical field [0001] The invention relates to the technical field of material processing and control, in particular to a method for manufacturing a powder magnetic core by insulating and solidifying amorphous powder at room temperature. Background technique [0002] With the development of electronic information technology, electronic products are developing in the direction of miniaturization, miniaturization, integration, intelligence, low energy consumption and high efficiency, so the requirements for magnetic components are getting higher and higher. The performance requirements of the material of the components are also getting higher and higher. Soft magnetic materials have the characteristics of light weight, high power, high sensitivity, and good stability, and meet the requirements of high resistivity, high effective permeability, high saturation magnetic induction, low coercive force, low loss, and magnetic crystal anisotropy. Low requirements, it is one of the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01F41/02B22F3/00B22F1/00
CPCH01F41/0206B22F3/006B22F1/10
Inventor 李雪高海丰高铭
Owner 辽宁秉航非晶科技有限公司
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