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Casting method of transformer or inductor

A casting method and inductor technology, applied in the manufacture of inductors/transformers/magnets, circuits, electrical components, etc., can solve the problems of magnetic core cracking, magnetic core cracking, inductance drop, etc., and achieve the effect of reducing impact force

Inactive Publication Date: 2010-05-05
SHENZHEN YINLI ELECTRIC APPLIANCES MFG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, if the transformer or inductor is potted by traditional technology, the magnetic core is prone to cracking due to internal stress. Technical requirements that affect the quality of the product

Method used

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  • Casting method of transformer or inductor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] a. Submerge the magnetic core completely in the silica gel primer treatment agent (model ZR2100), then take out the magnetic core and put it in an oven for drying at a temperature of 135°C for 25 minutes, then cool naturally after drying;

[0017] b. Submerge all the magnetic cores in organic potting silica gel (model ZR340), and air dry naturally after taking them out;

[0018] c. Repeat the process of step a once;

[0019] d, repeat the process of step b once;

[0020] e. After tightening the outer glass ribbon coil and magnetic core, adjust the inductance of the transformer or inductor to the upper limit, and then put it in the oven to preheat until the surface temperature reaches 75°C, and dry it at this temperature for 6 minutes. After natural cooling, wrap the glass ribbon as a whole for potting.

[0021] Before potting, fill the four corners of the transformer or inductor with glass ribbon, and ensure that the minimum distance between the magnetic core and the ...

Embodiment 2

[0030] a. Immerse the magnetic core completely in the silica gel primer treatment agent, then take out the magnetic core and put it in an oven for drying at a temperature of 140°C. The drying time is 30 minutes, and then naturally cool after drying;

[0031] b. Submerge all the magnetic cores in the organic potting silica gel, take them out and air dry them naturally;

[0032] c. Repeat the process of step a once;

[0033] d, repeat the process of step b once;

[0034] e. After tightening the outer glass ribbon coil and magnetic core, adjust the inductance of the transformer or inductor to the upper limit, then put it in the oven to preheat until the surface temperature reaches 80°C, and dry it at this temperature for 8 minutes. After natural cooling, wrap the glass ribbon as a whole for potting.

[0035] The silica gel bottom coating treatment agent used in the specific embodiment of the present invention adopts the product of Wuxi Lily Flower Adhesive Factory, and the freq...

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Abstract

The invention relates to a production process of a casting transformer or an inductor, in particular to a casting method of a transformer or an inductor. The method is characterized by comprising the following steps of: a. totally immersing a magnetic core into a silica gel prime coat finishing agent, then taking the magnetic core out, drying at the temperature of 135-140 DEG C for 25-30min, and naturally cooling after drying; b. then totally immersing the magnetic core into organic filling and sealing silica gel, and naturally airing after the magnetic core is taken out; c. repeating the process of the step a once; d. repeating the process of the step b once; e. regulating the inductance of the transformer or the inductor to the upper limit value after an outsourcing glass tape coil and the magnetic core are tightened up, then preheating until the surface temperature reaches 75-80 DEG C and drying at 75-80 DEG C for 5-8min, and finally filling and sealing after naturally cooling. The method not only can overcome the defects existing in traditional casting, but also can solve the problems of magnetic core cracking and reduced inductance of the transformer or the inductor caused by casting.

Description

technical field [0001] The invention relates to a production process of casting transformers or inductors, in particular to a casting method of transformers or inductors. Background technique [0002] In recent years, transformers or inductors have been widely used in various fields, especially cast-type transformers and inductors working in some special environments have high requirements for mechanical shock resistance and water resistance. [0003] At present, when the transformer or inductor is potted by traditional technology, the magnetic core is prone to cracking due to internal stress. Technical requirements affect the quality of the product. Contents of the invention [0004] The object of the present invention is to provide a casting method for transformers or inductors, which can form a layer of soft and uniform colloidal "protective film" on the surface of the magnetic core, thereby preventing the magnetic core from being Cracks caused by stress concentration...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01F41/02
Inventor 焦海波
Owner SHENZHEN YINLI ELECTRIC APPLIANCES MFG
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