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Electromagnetic wire and processing method thereof

A processing method and electromagnetic wire technology, applied in the field of electromagnetic wire, can solve the problems affecting the normal use of transformers, reducing the corrosion resistance of materials, affecting the flow rate of cooling medium, etc., achieving superior electrical performance, improving corrosion resistance, and improving cooling effect Effect

Inactive Publication Date: 2015-03-11
济南宝世达实业发展有限公司
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  • Abstract
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Problems solved by technology

The surface of the copper tube processed in this way is rough and the crystal grains are uneven, which reduces the corrosion resistance of the material and shortens the service life, especially the square inner hole guide column knife pad has small area and large resistance, which in turn affects the flow rate of the cooling medium. The water cooling effect is reduced, which affects the normal use of the entire transformer

Method used

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  • Electromagnetic wire and processing method thereof
  • Electromagnetic wire and processing method thereof

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Embodiment Construction

[0020] The specific implementation manners of the present invention will be described below in conjunction with the accompanying drawings. The present invention first discloses a magnet wire, which includes a body 2 and an insulator wrapped outside the body 2. The inner contour line of the cross section of the body 2 is square, that is, there is a square inner hole, and the outer contour line is circular. 2 is made of copper.

[0021] In order to ensure the corrosion resistance and pressure resistance of the insulator, the optional insulator is polyimide F46 composite film 1.

[0022] The invention also discloses a processing method of the insulator, which includes the following processing steps:

[0023] 1) Melting copper ingots: smelting electrolytic copper plates into cylindrical copper ingots;

[0024] 2) Piercing and extrusion: the temperature for piercing and extruding the cylindrical copper ingot into a large-size circular tube is 900°C to 920°C;

[0025] 3) Tube rol...

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Abstract

The invention discloses an electromagnetic wire and a processing method thereof. The electromagnetic wire comprises a body and an insulated body wrapping the body, wherein the inner contour line of the cross section of the body is square, and the outer contour line is round. In the processing, a moving core mark is matched with a moving outer mold to draw, so that the electromagnetic wire high in size precision, low in inner surface roughness, small in grain size and high in corrosion resistance is obtained. By continuously drawing a core ball on a coiling and pulling machine, a required long product is obtained, and the maximum length is at least up to 300m. A polyimide F46 composite film is adopted, and the advantages of high pressure resistance, high temperature resistance, high corrosion resistance and the like are achieved.

Description

technical field [0001] The invention relates to the technical field of transformers, in particular to an electromagnetic wire suitable for coils of water-cooled transformers, which can be matched with nuclear power units. Background technique [0002] With the rapid and healthy development of China's economy, the demand for electricity is also growing rapidly. The market demand for transformers, which are key components of power transmission, also increases accordingly. According to different cooling methods, transformers are divided into dry-type transformers and water-cooled transformers, and the insulation performance of water-cooled transformers is characterized by a linear increase with the increase of their own temperature. decline. [0003] Electromagnetic wires for water-cooled transformer coils generally have an outer and inner structure, such as the electromagnetic coil flat copper tube disclosed in the invention patent with application number 200820157050.0. The ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01B9/00H01B7/02H01B13/00
Inventor 韩波曹爱华卢强强韩道玉
Owner 济南宝世达实业发展有限公司
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