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A method of brazing litz wire and copper bar

A Litz wire and brazing technology, applied in the field of transformers, can solve problems such as increased wire resistance and increased power loss

Active Publication Date: 2016-07-27
AQ ELECTRIC SUZHOU
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  • Abstract
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  • Application Information

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Problems solved by technology

As a result, the resistance of the wire increases, so that its power loss also increases

Method used

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  • A method of brazing litz wire and copper bar

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Embodiment Construction

[0026] A method for brazing litz wires and copper bars, wherein the number of litz wires is 800, the diameter of each litz wire is 0.16 mm, the thickness of the copper bars is 3 mm, and the width is 20 mm. The method is as follows figure 1 shown, including the following steps:

[0027] (1) After spreading out the single-strand or multi-strand Litz wires, bind the Litz wires with a thin copper wire with a diameter of 1 mm;

[0028] (2) Preheat the soldering furnace, the preheating temperature is 380 degrees Celsius, and maintain this temperature;

[0029] (3) soldering, the soldering temperature is 375-385 degrees Celsius, the soldering time is 50 seconds, and the soldering length is 5-15 mm;

[0030] (4) Use a cleaning stick to clean the immersion tin oxide on the Litz wire outlet in time;

[0031] (5) While it is hot, use a vise to shape the tinned Litz wire until there is no excess tin;

[0032] (6) Determine the welding position. According to the actual production of the...

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Abstract

The invention discloses a method for brazing a litz wire and a copper bar, which comprises the following steps: binding the litz wire; preheating a soldering furnace; soldering; cleaning by dipping tin oxide; According to the above method, the phenomenon that the litz wire cannot be welded with the copper bar due to the litz wire melting during the welding process due to the small diameter of the litz wire can be avoided. Through the above method, the litz wire can be effectively and quickly welded on the copper bar.

Description

technical field [0001] The invention relates to the technical field of transformers, in particular to a method for brazing litz wires and copper bars. Background technique [0002] The main components of a transformer are the primary coil, the secondary coil and the iron core (magnetic core). Among them, the primary coil and the secondary coil are made of wires. If the wires for winding the coils are a single wire or a few wires, when there is an alternating current or an alternating electromagnetic field in the wire, the current distribution inside the conductor in the wire is not stable. Uniform, and the current is concentrated in the "skin" part of the conductor, the current inside the wire actually becomes smaller, and the current is concentrated in the thin layer on the outside of the wire. As a result, the resistance of the wire increases, so that its power loss also increases. This phenomenon is known in the industry as the skin effect. In order to avoid the advers...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01F41/04H01R43/02
Inventor 秦福龙庞统
Owner AQ ELECTRIC SUZHOU
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