Magnetic core fixing method

Abstract

The invention provides a magnetic core fixing method. The transformer comprises two E-shaped magnetic cores with the same structure, the contact end faces of the two sides of an E-shaped magnetic coreare coated with a layer of little anaerobic adhesive. Penetrating the E-shaped magnetic core coated with the anaerobic adhesive and the other E-shaped magnetic core not coated with the anaerobic adhesive into the transformer coil from the left side and the right side of the transformer coil; the two E-shaped magnetic cores are pinched with hands, it is guaranteed that no air exists between the contact end faces of the two E-shaped magnetic cores, standing is conducted for two minutes, the anaerobic adhesive can be cured, and then operation of the next paint dipping procedure is conducted. According to the method, the magnetic core can be quickly fixed. Meanwhile, it can be guaranteed that insulating paint does not enter the contact end faces of the magnetic core in the paint dipping process, the product inductance percent of pass can be effectively increased, and meanwhile the production cost can be reduced.

Description

technical field [0001] The invention relates to a method for fixing a magnetic core, which is used for fixing the magnetic core in the production process of an electronic transformer. Background technique [0002] In the production process of high-frequency transformers, the wire package needs to be fixed by inserting two pieces of E-shaped magnetic cores after the wiring is ironed. The fixing method is to use a circlip to fix, and then carry out the operation of dipping paint and drying. However, both of these two fixing methods have a common drawback. During the process of dipping the product, since there will be gaps between the end faces of the magnetic core, during the dipping process, the insulating varnish will enter the gaps between the end faces of the magnetic core, causing the product to be impregnated with paint. The final inductance will change greatly, especially for products whose inductance range is required to be within ±3%, the inductance defect rate of th...

AI Technical Summary

Problems solved by technology

However, both of these two fixing methods have a common drawback. During the process of dipping the product, since there will be gaps between the end faces of the magnetic core, during the dipping process, the insulating varnish will enter the gaps between the end faces of the magnetic core, causing the product to be impregnated with paint. The final inductance will change greatly, especially for products whose inductance range is required to be within ±3%, the inductance defect rate of the product after dipping paint will remain high, as high as 30% or more

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