Method for coating thin epoxy resin of amorphous alloy iron core

A technology of epoxy resin coating and amorphous alloy, which is applied in the manufacture of inductors/transformers/magnets, electrical components, circuits, etc., can solve the problem of no-load loss and increase of excitation power, long curing time of epoxy resin, and increase of transformer loss And other problems, to achieve the effect of low no-load loss, shorten curing time, and small no-load current

Inactive Publication Date: 2008-11-05
SHANGHAI RIGANG ZHIXIN AMORPHOUS METAL
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

[0003] 1. The thickness of the epoxy resin is large, and the curing volume of the epoxy resin shrinks greatly, which easily causes the amorphous iron core to be subjected to stress, and the amorphous iron core is very sensitive to the stress, which makes its no-load loss and excitation power increase, affecting the performance of the iron core;
[0004] 2. The curing time of epoxy resin is long, which affects the production efficiency;
[0005] 3. Increase the size of the iron core and increase the unnecessary loss of the transformer

Method used

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  • Method for coating thin epoxy resin of amorphous alloy iron core
  • Method for coating thin epoxy resin of amorphous alloy iron core

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Embodiment

[0019] like figure 1 , 2 As shown, it is a structural schematic diagram of an amorphous alloy iron core with a thin epoxy resin, and a method for coating an amorphous alloy iron core with a thin epoxy resin is:

[0020] Step 1: Use a brush to remove dust on the surface of the amorphous alloy core 1;

[0021] Step 2: On the amorphous alloy core 1, paste a tape with a width of 1 cm below the line A-A to prevent the epoxy resin from leaking out;

[0022] Step 3: Use a brush to evenly brush the epoxy resin 2 on the surface of the iron core above the line A-A of the amorphous alloy iron core 1, and the thickness of the epoxy resin 2 is less than 1mm;

[0023] Step 4: Put the coated amorphous alloy iron core 1 into an oven for baking at a temperature of 130° C. for 20 minutes, and then take it out;

[0024] Step 5: Turn the amorphous iron core over on the reversing table; repeat steps 1 to 4 on the other side of the iron core.

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Abstract

The invention relates to a method of the amorphous alloy core thin epoxy resin coating, characterized by using the brush coating. The method includes removing the surface dust of the amorphous alloy core through a brush; sticking the adhesive tape with the width 1 cm beside the coating along the line A-A on the amorphous alloy core 1, for preventing the epoxy resin extravasating; brushing the epoxy resin evenly on the core surface above the line A-A on the amorphous alloy core 1, wherein the thickness of the epoxy resin is lower than 1mm; putting the amorphous alloy core with the coating into the oven for roasting at the roasting temperature 100-150 DEG C for 10 minutes to 30 minutes. The invention has the advantages of lower no-load loss, smaller no-load current; the solidifying time of the epoxy resin is reduced for 60%, the whole height of the core is reduced for 2-3 minutes, thereby reducing the size of the transformer for saving.

Description

technical field [0001] The invention relates to a thin epoxy resin coating method for an amorphous alloy iron core, in particular to a thin epoxy resin coating method for an amorphous alloy iron core of a dry-type transformer, which belongs to the transformer iron core coating technology field. Background technique [0002] The coating of the traditional dry-type transformer amorphous alloy iron core is 2 mm epoxy resin. Use a batch knife to apply a layer of epoxy resin with a thickness of 2 mm on the end face of the iron core. The coating is relatively thick when using a batch knife. The main disadvantages of a coating with a thickness of 2 mm are: [0003] 1. The thickness of the epoxy resin is large, and the curing volume of the epoxy resin shrinks greatly, which easily causes the amorphous iron core to be subjected to stress, and the amorphous iron core is very sensitive to the stress, which makes its no-load loss and excitation power increase, affecting the performanc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01F41/02
Inventor 周永红徐华
Owner SHANGHAI RIGANG ZHIXIN AMORPHOUS METAL
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