Soft magnet ferrite magnetic ring surface plastic coating method

A soft magnetic ferrite and magnetic ring technology, which is applied to the surface coating liquid device, surface pretreatment, inductance/transformer/magnet manufacturing, etc., to achieve the effect of increasing withstand voltage and high pass rate of plastic coating

Inactive Publication Date: 2005-01-12
祁关泉
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to overcome the defects of the plastic coating method of the above outer diameter ≥ 6mm magnetic ring, the present invention provides an improved method, which mainly solves the problem of high voltage breakdown on the inner and outer sides and both ends of the plastic coated magnetic ring, and at the same time improves the qualified rate of plastic coating

Method used

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Examples

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Embodiment Construction

[0014] Below, the magnetic ring (Φ10) with an outer diameter of 10mm is used as an example of plastic coating, and the implementation method of the present invention will be described in detail. Φ10 magnetic ring is a variety with a large amount of plastic coating. The process of this plastic coating method is as follows:

[0015] 1. Use the noise method to clean the magnetic ring. The cleaning solution is: 9.5Kg tap water, 0.5Kg soap powder. Pour the magnetic ring into the cleaning solution, submerge the magnetic ring, line it with a steel basket, take it out after 10 minutes of noise cleaning, rinse it with tap water and dry it.

[0016] 2. Dispose the magnetic rings on a 40×60cm conductive screen with electrodes, and keep the minimum distance between the magnetic rings at 0.5cm.

[0017] 3. High-voltage electrostatic powder spraying: place the conductive mesh plate with the magnetic ring discharged in the spray box, and make good contact with the high-voltage generator, tu...

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Abstract

A method for coating plastics on the surface of soft magnetic ferrite ring features the plastic coating technology including powder spraying twice and thermosetting twice is used, and the additional powder is supplemented to the upper and lower end faces of magnetic ring for increasing its thickness. Its advantage is high voltage withstanding of ferrite ring (more than 200V).

Description

1. Technical field [0001] The invention relates to a method for coating the surface of a soft ferrite magnetic ring with plastic, and belongs to the technical field of plastic coating. 2. Background technology [0002] In order to enhance the safety and reliability of electronics, electrical appliances, and power equipment, the widely used inductors made of multi-turn enameled wires wound on magnetic rings are required to prevent voltage breakdown and enhance withstand voltage. The method of plastic-coating the surface of the soft ferrite magnetic ring is adopted. The methods reported and used are as follows: [0003] The magnetic ring with an outer diameter of Φ6mm or less adopts the vapor phase low temperature deposition method. The plastic coating material is Parylin, which is transparent and colorless, and the coating thickness is 5μm-10μm. When the magnetic ring has no burrs and no secondary edges, the withstand voltage can meet the requirements, and the plastic coati...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B05C1/06B05D1/38B05D3/02H01F41/02
Inventor 祁关泉包占凤
Owner 祁关泉
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