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Manufacturing method for metal soft magnetic powder insulating particles

A technology of metal soft magnetic and insulating particles, applied in the direction of metal processing equipment, magnetic materials, magnetic objects, etc., can solve the problems of reducing the magnetic permeability of the powder core and losing the power density of the magnetic core, so as to improve product performance and reduce hysteresis Loss, the effect of improving stability

Inactive Publication Date: 2019-04-23
深圳市迈翔科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The resistivity of the powder core can be increased by adding an insulating binder, which is conducive to increasing the internal air gap of the powder core, improving the high-frequency characteristics of the powder core, and reducing power loss; however, the increase of the insulating binder increases the air gap inside the powder core porosity, which also reduces the magnetic permeability of the powder core, thus losing the power density of the core

Method used

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  • Manufacturing method for metal soft magnetic powder insulating particles
  • Manufacturing method for metal soft magnetic powder insulating particles
  • Manufacturing method for metal soft magnetic powder insulating particles

Examples

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Effect test

Embodiment 1

[0047] A method for manufacturing metal soft magnetic powder insulating particles, comprising the following steps:

[0048] (1) Get glycerin and add magnesium dichromate, stir until the solution becomes a viscous liquid with uniform color, add phosphoric acid and mix uniformly; add urea and sodium dodecylbenzenesulfonate and mix uniformly to prepare insulating agent;

[0049] Wherein: the insulating agent includes: 9% magnesium dichromate, 12% phosphoric acid, 6% urea, 70% glycerin, 1.5% sodium dodecylbenzene sulfonate and the rest of water;

[0050] (2) take step (1) insulating agent and dilute with acetone, the addition of insulating agent is 5% of metal soft magnetic powder weight, and acetone addition is 8% of metal soft magnetic powder weight, metal soft magnetic powder is added to insulation Stir in the agent until it is dry, pass through a 70-mesh sieve to disperse the powder, dry the dispersed powder in the shade and bake to obtain a primary processed powder;

[0051]...

Embodiment 2

[0056] A method for manufacturing metal soft magnetic powder insulating particles, comprising the following steps:

[0057] (1) Get glycerin and add magnesium dichromate, stir until the solution becomes a viscous liquid with uniform color, add phosphoric acid and mix uniformly; add urea and sodium dodecylbenzenesulfonate and mix uniformly to prepare insulating agent;

[0058] Wherein: insulating agent includes: 7% magnesium dichromate, 8% phosphoric acid, 4% urea, 80% glycerin and 0.5% sodium dodecylbenzene sulfonate and the balance water;

[0059] (2) take step (1) insulation agent and dilute with acetone, the addition of insulation agent is 10% of metal soft magnetic powder weight, and acetone addition is 5% of metal soft magnetic powder weight, metal soft magnetic powder is added to insulation Stir in the agent until dry, pass through a 90-mesh sieve to disperse the powder, dry the dispersed powder in the shade and bake to obtain a primary processed powder;

[0060] (3) Ta...

Embodiment 3

[0065] A method for manufacturing metal soft magnetic powder insulating particles, comprising the following steps:

[0066] (1) Get glycerin and add magnesium dichromate, stir until the solution becomes a viscous liquid with uniform color, add phosphoric acid and mix uniformly; add urea and sodium dodecylbenzenesulfonate and mix uniformly to prepare insulating agent;

[0067] Among them: insulating agent includes: 8% magnesium dichromate, 10% phosphoric acid, 5% urea, 77% glycerin and 1% sodium dodecylbenzenesulfonate;

[0068] (2) take step (1) insulating agent and dilute with acetone, the addition of insulating agent is 8% of metal soft magnetic powder weight, and acetone addition is 7% of metal soft magnetic powder weight, metal soft magnetic powder is added to insulation Stir in the agent until dry, pass through a sieve of 80 mesh to disperse the powder, dry the dispersed powder in the shade and bake to obtain a primary processed powder;

[0069] (3) Dilute the epoxy resi...

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Abstract

The invention discloses a manufacturing method for metal soft magnetic powder insulating particles. The manufacturing method comprises the following steps of adding magnesium dichromate in glycerol, performing stirring until a solution becomes viscous liquid with a uniform color, adding phosphoric acid for mixing, and adding urea and sodium dodecyl benzene sulfonate for mixing to prepare an insulating agent; (2) diluting the insulating agent with acetone, and adding metal soft magnetic powder in the insulating agent, performing stirring until a dry state, dispersing the powder with a sieve, drying the dispersed powder in a shallow, and performing baking to obtain primary processing powder; (3) diluting epoxy resin with the acetone, adding the diluted epoxy resin in the primary processing powder, performing screening, granulating, shadow drying and baking after stirring to obtain secondary processing powder; and (4) adding the secondary processing powder in a lubricant, and performing uniform mixing to obtain the metal soft magnetic powder insulating particles. A power inductor provided by the invention has high-saturation, large-current and low-eddy current loss power inductance performance; and compared with a traditional inductor, by adopting the method, the stability and the characteristics of a product are improved on the aspects of materials and processes.

Description

technical field [0001] The invention relates to the technical field of soft magnetic alloy powder, in particular to a method for manufacturing insulating particles of metal soft magnetic powder. Background technique [0002] The existing metal soft magnetic powder core is obtained by uniformly mixing soft magnetic alloy powder with an insulating agent and a binder, pressing and molding, and heat-treating. At present, metal soft magnetic powder cores mainly include iron powder cores, iron-nickel alloy powder cores, iron-nickel-molybdenum alloy powder cores, iron-silicon-aluminum alloy powder cores, etc. Metal soft magnetic powder core is a key node in the manufacture of inductors, especially high-frequency, high-current, and high-power inductors. The main parameters that reflect the performance of metal soft magnetic powder cores include: saturation magnetic induction, magnetic permeability, quality factor, power loss, and frequency characteristics. In addition to the metal...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F1/00H01F1/147H01F1/24
CPCH01F1/14766H01F1/24B22F1/103B22F1/10
Inventor 刘旸汪成章潘小荣
Owner 深圳市迈翔科技有限公司
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