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

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...

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