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Manufacturing method of integrally-formed inductor and integrally-formed inductor

A production method and inductor technology, applied in transformer/inductor parts, inductor/transformer/magnet manufacturing, transformer/inductor noise damping, etc., can solve the problems of polluting the environment, high processing costs, component gaps, etc., to achieve Good fluidity and compactability, good effect, excellent magnetic properties

Inactive Publication Date: 2020-05-29
山东恒瑞磁电股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This kind of inductance element has the defects of large volume, difficulty in automation, and electromagnetic leakage, which will generate vibration and noise, and will also cause increased magnetic loss, which will affect the quality factor of the inductance
On the other hand, traditional inductors require manual work, pollute the environment, and have high processing costs, so they cannot be mass-produced.
In order to solve the above problems, a method of adding an outer cover to the outside of the magnetic core is often used in the market, commonly known as a combined magnetic core component, but this design still has the problem of component gaps, and this part of the gap will also cause magnetic loss

Method used

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  • Manufacturing method of integrally-formed inductor and integrally-formed inductor

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] A method for manufacturing an integrally formed inductor, comprising:

[0037] Step 1, making the coil blank according to the set requirements;

[0038] Step 2, making fine spherical metal powder;

[0039] The preparation method of the fine spherical metal powder is to mix the hydroxyl powder, epoxy resin, zinc stearate and acetone uniformly according to the weight ratio of 100:5:2:3, and then keep the temperature at 80°C for 1 hour, Then crush and grind to check whether the prepared powder satisfies the sphericity ≥ 90%, and whether the powder particle size meets: D50≤15μm, D90≤30μm; epoxy resin is used as a binder, and zinc stearate is added as a lubricant; hydroxyl The powder is hydroxyl iron powder, and the epoxy resin is the polycondensation product of epichlorohydrin and bisphenol A.

[0040] If satisfied, the preparation of fine spherical metal powder is completed;

[0041] If it is not satisfied, then mix the prepared powder with epoxy resin, zinc stearate an...

Embodiment 2

[0047] A method for manufacturing an integrally formed inductor, comprising:

[0048] Step 1, making the coil blank according to the set requirements;

[0049] Step 2, making fine spherical metal powder;

[0050] The preparation method of the fine spherical metal powder is as follows: mix the hydroxyl powder with epoxy resin, zinc stearate and acetone according to the weight ratio of 100:20:15:10, and then keep the temperature at 90°C for 2 hours, Then crush and grind to check whether the prepared powder satisfies the sphericity ≥ 90%, and whether the powder particle size meets: D50≤15μm, D90≤30μm; epoxy resin is used as a binder, and zinc stearate is added as a lubricant; hydroxyl The powder is hydroxyl iron powder, and the epoxy resin is the polycondensation product of epichlorohydrin and bisphenol A.

[0051] If satisfied, the preparation of fine spherical metal powder is completed;

[0052] If it is not satisfied, then mix the prepared powder with epoxy resin, zinc stea...

Embodiment 3

[0056] A method for manufacturing an integrally formed inductor, comprising:

[0057] Step 1, making the coil blank according to the set requirements;

[0058] Step 2, making fine spherical metal powder;

[0059]The preparation method of the fine spherical metal powder is as follows: mix the hydroxyl powder with epoxy resin, zinc stearate and acetone according to the weight ratio of 100:15.26:8.65:5.26, and then keep the temperature at 86.6°C for 1.6 hours. Then crush and grind to check whether the prepared powder satisfies the sphericity ≥ 90%, and whether the powder particle size meets: D50≤15μm, D90≤30μm; epoxy resin is used as a binder, and zinc stearate is added as a lubricant; hydroxyl The powder is hydroxyl iron powder, and the epoxy resin is the polycondensation product of epichlorohydrin and bisphenol A.

[0060] If satisfied, the preparation of fine spherical metal powder is completed;

[0061] If it is not satisfied, then mix the prepared powder with epoxy resin,...

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Abstract

The invention discloses a manufacturing method of an integrally-formed inductor and the integrally-formed inductor. The manufacturing method comprises the steps of manufacturing a coil blank accordingto set requirements; and manufacturing a fine spherical metal powder. The manufacturing method of the fine spherical metal powder comprises the following steps of uniformly mixing a hydroxyl powder,an epoxy resin, zinc stearate and acetone according to a weight ratio of 100:5-20:2-15:3-10, preserving heat for 1-2 hours at a temperature of 80-90 DEG C, then crushing and grinding, and detecting whether a prepared powder meets a condition that a sphericity degree is greater than or equal to 90%, and whether a particle size satisfies the condition that D50 is less than or equal to 15 microns andD90 is less than or equal to 30 microns; if so, completing preparation of the fine spherical metal powder; if not, preparing by adopting the method till that requirements are met; putting the coil blank into a mold of a film pressing machine, and injecting the fine spherical metal powder into the mold to wrap and press the coil blank so as to form a shape; and carrying out molding post-treatment.The manufacturing method is simple in process. And the method and the inductor have a fully-closed structure, havea good magnetic shielding effect and are suitable for automatic mass production.

Description

technical field [0001] The invention relates to the technical field of a method for manufacturing an integrally formed inductor, in particular to a method for manufacturing an integrally formed inductor and the integrally formed inductor. Background technique [0002] As an important part of new electronic information materials, integrally formed inductors are the cornerstone of the development of the information technology industry. Traditional inductors are wound on ferrite core components to form inductive components. The traditional inductance element is composed of two magnetic cores, one upper and one lower, and a coil. The lower magnetic core has a groove for accommodating the coil. The upper magnetic core is covered with its corresponding cover, and then bonded by dispensing , baking and other processes, so that the two cores are combined into a cladding body. This kind of inductance element has the defects of large size, difficulty in automation, and electromagneti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01F41/02H01F27/255H01F27/32H01F27/33H01F27/36
CPCH01F27/255H01F27/325H01F27/33H01F41/0246
Inventor 赵铁钧刘尚玉
Owner 山东恒瑞磁电股份有限公司
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