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Manufacturing method of iron powder core blank and manufacturing method of iron powder core

A manufacturing method and technology of iron powder core, which are applied in the manufacture of inductors/transformers/magnets, electrical components, circuits, etc., can solve the problems of difficulty in controlling the stability of insulation resistance and anti-rust ability, uneven coating of plexiglass, Affect the adhesion of iron powder core electrodes and other problems, and achieve the effect of high degree of automation, less labor, and consistency guarantee

Active Publication Date: 2015-03-04
SHENZHEN SUNLORD ELECTRONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the insulating varnish on the surface of the iron powder core prepared by the above-mentioned manufacturing method is likely to affect the electrode adhesion of the iron powder core and cause great environmental pollution during the production process, and the coating of plexiglass is easy to be unevenly coated, resulting in product failure. The stability of insulation resistance and anti-rust ability is not easy to control

Method used

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  • Manufacturing method of iron powder core blank and manufacturing method of iron powder core
  • Manufacturing method of iron powder core blank and manufacturing method of iron powder core
  • Manufacturing method of iron powder core blank and manufacturing method of iron powder core

Examples

Experimental program
Comparison scheme
Effect test

experiment example 1

[0037] The ferrite slurry for tape casting is composed of the following components in weight percentage:

[0038] Ferrite powder 90%

[0039] Binder 10%

[0040] The metal powder slurry for tape casting is composed of the following components in weight percentage:

[0041] Metal powder 90%

[0042] Binder 10%

[0043] Wherein, the ferrite powder consists of the following components by weight percentage:

[0044]

[0045] Described metal powder is made up of the component of following percentage by weight:

[0046] Iron 95%

[0047] Silicon 2.5%

[0048] Chromium 2.5%

[0049] Described binding agent is made up of the component of following percentage by weight:

[0050]

[0051]

[0052] According to the above weight percentages, they were mixed into a ball mill for mixing, and the frequency of the ball mill was set to 25 Hz and the time was 24 hr to prepare uniform ferrite slurry and metal powder slurry respectively.

[0053] The ferrite slurry and the metal...

experiment example 2

[0066] The ferrite slurry for tape casting is composed of the following components in weight percentage:

[0067] Ferrite powder 85%

[0068] Binder 15%

[0069] The metal powder slurry for tape casting is composed of the following components in weight percentage:

[0070] Metal powder 85%

[0071] Binder 15%

[0072] Wherein, the ferrite powder consists of the following components by weight percentage:

[0073]

[0074] Described metal powder is made up of the component of following percentage by weight:

[0075] Iron 93.5%

[0076] Silicon 3%

[0077] Chromium 3.5%

[0078] Described binding agent is made up of the component of following percentage by weight:

[0079]

[0080] According to the above weight percentages, they were mixed into a ball mill for mixing, and the frequency of the ball mill was set to 25 Hz and the time was 24 hr to prepare uniform ferrite slurry and metal powder slurry respectively.

[0081] The ferrite slurry and the metal powder slur...

experiment example 3

[0094] The ferrite slurry for tape casting is composed of the following components in weight percentage:

[0095] Ferrite powder 80%

[0096] Binder 20%

[0097] The metal powder slurry for tape casting is composed of the following components in weight percentage:

[0098] Metal powder 80%

[0099] Binder 20%

[0100] Wherein, the ferrite powder consists of the following components by weight percentage:

[0101]

[0102] Described metal powder is made up of the component of following percentage by weight:

[0103] Iron 91%

[0104] Silicon 5%

[0105] Chromium 4%

[0106] Described binding agent is made up of the component of following percentage by weight:

[0107]

[0108] According to the above weight percentages, they were mixed into a ball mill for mixing, and the frequency of the ball mill was set to 25 Hz and the time was 24 hr to prepare uniform ferrite slurry and metal powder slurry respectively.

[0109] The ferrite slurry and the metal powder slurry w...

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Abstract

The invention discloses a manufacturing method of an iron powder core blank and a manufacturing method of an iron powder core. The manufacturing method of the iron powder core blank comprises the following steps: (1) preparing ferrite slurry and metal powder slurry, wherein the ferrite slurry comprises 70% to 95% by weight of ferrite powder and 5% to 30% by weight of binding agent, and the metal powder slurry comprises 70% to 95% by weight of metal powder and 5% to 30% by weight of binding agent; (2) implementing tape casting on the ferrite slurry and the metal powder slurry to form 25mu. m to 50mu. m thick films respectively; (3) overlapping the ferrite tape casting film and the metal tape casting film together to form a compound material film, and implementing prepressing stamping on the compound material film through 300MPa to 400MPa pressure; (4) cutting the compound material film which is subjected to the prepressing stamping; (5) implementing re-pressing stamping on a rough blank; (6) implementing cutting processing on the rough blank to obtain the cylindrical part of the blank. By applying the manufacturing method of the iron powder core blank and the manufacturing method of the iron powder core provided by the invention, the insulation performance and the rust prevention performance of a manufactured iron powder core product are better.

Description

【Technical field】 [0001] The invention relates to a method for manufacturing an iron powder core, in particular to a method for manufacturing an iron powder core body and a method for manufacturing the iron powder core. 【Background technique】 [0002] The existing manufacturing method of the iron powder core body is generally to fill the mold with metal powder with iron as the main component, and press it to obtain a rough body. The rough body is processed under a high-speed rotating tool at 8000 rpm The cylindrical part is used to obtain the final iron powder core green body. In order to prevent the iron components from being oxidized in the air to form rust and affect the use of the product, the surface of the iron powder core body is generally coated with insulating varnish or plexiglass. However, the insulating varnish on the surface of the iron powder core prepared by the above-mentioned manufacturing method is likely to affect the electrode adhesion of the iron powder...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01F41/02B22F3/10
Inventor 谈敏周小军朱晏军
Owner SHENZHEN SUNLORD ELECTRONICS
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