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Paint capable of shielding chromatic circle inductor and process for coating chromatic circle inductor

An inductor, color ring technology, applied in the direction of transformer/inductor components, inductor/transformer/magnet manufacturing, preventing/reducing unwanted electrical/magnetic effects, etc. The problem of single loop inductance function, etc., achieves the effect of small change in inductance value and reduced coating cost

Active Publication Date: 2016-05-25
深圳市同利科斯电子有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For a long time, the function of the color ring inductance is single. Although the price is cheap, there is no revolutionary technology.
The Chinese patent application number is: 200910041053.7, which introduces a coating method that can reduce the pores (pinholes) of the color ring inductance. reduce or eliminate
As for the problem of pinholes in the coating color ring inductor, with the continuous improvement of UV coating technology and no technical difficulty for a coating technician with more than 5 years, the color can also be made without the patented method. Ring inductors do not produce pinholes during the coating process, which is one of the reasons why the price of color ring inductors continues to decline

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] A shielded color ring inductive paint coating, comprising the following substances: 1.0kg of color ring inductive paint, 0.4kg of liquid curing agent, 1.5kg of manganese zinc ferrite magnetic powder, and 0.4kg of diluent, and the weight percentages of each component are as follows: 30%, 12%, 45% and 12%.

[0031] The method for preparing shielded color ring inductance paint and encapsulating the shielded color ring inductance comprises the following steps:

[0032]1) Prepare manganese zinc ferrite magnetic powder, dry the magnetic powder containing moisture after grinding the magnetic core of the switching power supply transformer in an oven, and use a fine grinder similar to the flour processing machine for crushing to obtain dry manganese zinc ferrite The magnetic powder is automatically sieved by a metal screen machine, and the coarse particle components are filtered to make 1.5kg of 100-mesh manganese-zinc ferrite magnetic powder.

[0033] 2) Take 1 kg of green col...

Embodiment 2

[0039] A shielding color ring inductance paint coating, comprising the following substances: color ring inductance paint 1.0kg, liquid curing agent 0.3kg, nickel-zinc ferrite magnetic powder or magnesium-zinc ferrite powder 1.0kg, diluent 0.5kg, each group The percentages by weight of points are successively: 36%, 11%, 36% and 18%.

[0040] A method for encapsulating a shielded color ring inductor with the above-mentioned component shielded color ring inductor coating includes the following steps:

[0041] 1) The pre-baked nickel-zinc ferrite powder or magnesium-zinc ferrite powder is directly fired without processing and molding, and the fired nickel-zinc ferrite magnetic powder is a loose powder. According to the actual situation, crush or filter through a sieve to obtain nickel-zinc ferrite magnetic powder or magnesium-zinc ferrite magnetic powder.

[0042] 2) After mixing the color ring inductive paint and the liquid curing agent, stir well and evenly to obtain the conven...

Embodiment 3

[0048] A shielding color ring inductive paint coating, comprising the following substances: 1.0 parts of color ring inductive paint, 0.6 parts of liquid curing agent, 2.0 parts of manganese zinc ferrite magnetic powder, 0.8 parts of thinner, and the weight percentage of each component is as follows: 26 %, 13%, 43% and 17%.

[0049] The method and steps for preparing the shielded color ring inductance paint and encapsulating the shielded color ring inductance are the same as in Example 1.

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Abstract

The invention provides paint capable of shielding a chromatic circle inductor and a process for coating the chromatic circle inductor. The paint capable of shielding the chromatic circle inductor is characterized by comprising the following materials in percentage by mass: 25-50% of chromatic circle inductor paint, 20-55% of soft magnetic ferrite magnetic powder, 10-30% of liquid curing agent and 10-30% of diluent; the manufacturing method for the paint capable of shielding the chromatic circle inductor and the process for coating the chromatic circle inductor comprise the steps of coating for two times by using the paint capable of shielding chromatic circle inductor, and then coating for two times by using the paint capable of shielding chromatic circle inductor. The paint capable of shielding the chromatic circle inductor and the process for coating the chromatic circle inductor have the advantages that interference on other parts caused by leakage flux generated in operating of the chromatic circle inductor can be effectively shielded; the cost of the coating can be greatly reduced; the inductance value can be increased; the self-resonance frequency is increased; and the paint is mainly suitable for packaging of the chromatic circle inductor.

Description

technical field [0001] The invention relates to a paint for shielding a color ring inductor and a process for coating the color ring inductor. Background technique [0002] With the miniaturization of electronic products, the advent of various types of high-definition displays and the popularization of low-cost LED lighting products, there are higher requirements for existing inductance devices. Change. Moreover, a shielding function is required to reduce the interference of the electromagnetic field generated by the inductance device on other components. Color ring inductors have been introduced to mainland China for more than 20 years since the late 1980s, and have developed rapidly. Now China’s annual output has reached 7 billion. Taking 0307 products as an example, the unit price has ranged from 0.25 yuan in 1992 to 0.025 yuan now. It has dropped by 10 times, mainly due to the use of automatic winding machines and fully automatic pinning machines, which has greatly red...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01F41/00H01F27/36C09D201/00C09D5/23C08K3/22
CPCC08K3/22C09D5/23C09D201/00H01F41/005H01F41/16C08K2003/2296H01F27/366H01F41/00
Inventor 王强
Owner 深圳市同利科斯电子有限公司
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