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Manufacturing method of enameled wire for network transformer

A technology for network transformers and manufacturing methods, applied in the direction of reducing the size of conductors/cables, used in heat treatment equipment, cable/conductor manufacturing, etc., can solve the problems of uneven paint coating on the surface of enameled wires, flexibility, thermal shock and thermal aging Poor performance and other problems, to achieve the effect of reducing the friction coefficient, good elongation, and improving quality

Inactive Publication Date: 2020-03-24
湖州中洲电磁线有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Aiming at the deficiencies of the prior art, the present invention provides a manufacturing method of enameled wires for network transformers, which solves the problems of poor flexibility, thermal shock, and thermal aging performance of enameled wires used for network transformers, and uneven paint coating on the surface of enameled wires. The problem

Method used

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  • Manufacturing method of enameled wire for network transformer
  • Manufacturing method of enameled wire for network transformer
  • Manufacturing method of enameled wire for network transformer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] A method for manufacturing an enameled wire for a network transformer, comprising the following steps:

[0044] A: Material selection: Copper rods with a diameter of 5mm are used as raw materials, and the copper rods are low-oxygen copper with a purity of more than 99.9%;

[0045] B: Drawing: First, the copper rod is drawn on a large wire drawing machine for multiple times of large stretching to obtain a 0.1mm wire rod, and then the wire rod is subjected to multiple large stretches through the fine wire drawing equipment to obtain a 0.05mm semi-finished wire rod ;

[0046] C: Cleaning: Clean the drawn semi-finished wire to remove the oil on the surface;

[0047] D: Annealing: use the non-contact annealing method to anneal the semi-finished wire twice in the annealing furnace, the temperature of the two annealing is 400 ° C and 340 ° C, and the inlet port of the annealing furnace is sealed by nitrogen sealing;

[0048] E: Painting: Use the painting device to paint the ...

Embodiment 2

[0054] A method for manufacturing an enameled wire for a network transformer, comprising the following steps:

[0055] A: Material selection: Copper rods with a diameter of 5mm are used as raw materials, and the copper rods are low-oxygen copper with a purity of more than 99.9%;

[0056] B: Drawing: First, the copper rod is drawn on a large wire drawing machine for multiple times of large stretching to obtain a 0.1mm wire rod, and then the wire rod is subjected to multiple large stretches through the fine wire drawing equipment to obtain a 0.05mm semi-finished wire rod ;

[0057] C: Cleaning: Clean the drawn semi-finished wire to remove the oil on the surface;

[0058] D: Annealing: use the non-contact annealing method to anneal the semi-finished wire twice in the annealing furnace, the temperature of the two annealing is 420 ℃ and 360 ℃, and the inlet port of the annealing furnace is sealed by nitrogen sealing;

[0059] E: Painting: Use the painting device to paint the semi-f...

Embodiment 3

[0065] A method for manufacturing an enameled wire for a network transformer, comprising the following steps:

[0066] A: Material selection: Copper rods with a diameter of 5mm are used as raw materials, and the copper rods are low-oxygen copper with a purity of more than 99.9%;

[0067] B: Drawing: First, the copper rod is drawn on a large wire drawing machine for multiple times of large stretching to obtain a 0.1mm wire rod, and then the wire rod is subjected to multiple large stretches through the fine wire drawing equipment to obtain a 0.05mm semi-finished wire rod ;

[0068] C: Cleaning: Clean the drawn semi-finished wire to remove the oil on the surface;

[0069] D: Annealing: use the non-contact annealing method to anneal the semi-finished wire twice in the annealing furnace, the temperature of the two annealing is 440 ℃ and 380 ℃, and the inlet of the annealing furnace is sealed by nitrogen sealing;

[0070] E: Painting: Use the painting device to paint the semi-fini...

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Abstract

The invention discloses a manufacturing method of an enameled wire for a network transformer, and relates to the technical field related to enameled wire production. The method comprises the followingsteps: A, material selection, B, drawing, C, cleaning, D, annealing: adopting a non-contact annealing method to anneal a semi-finished wire twice in an annealing furnace, E, painting: utilizing a painting device to paint the semi-finished wire twice, F, curing, G, detection, H, oiling, and I, wire winding. According to the invention, nitrogen is used as a protective gas, so that the copper wire at high temperature is not contacted with oxygen in the air, the nitrogen is used as the protective gas, the elongation of the product is better compared with steam, copper oxide can be effectively prevented from being generated, the flexibility, thermal shock and thermal aging performance of the enameled wire can be ensured, and the quality of the enameled wire is improved. And through cooperativearrangement of a felt ring, a cotton cloth layer, a fixing ring, a fixing cylinder and a motor, the felt ring and the cotton cloth layer can be driven to rotate, and painting is more uniform.

Description

technical field [0001] The invention relates to the technical field related to the production of enameled wires, in particular to a method for manufacturing enameled wires for network transformers. Background technique [0002] Enameled wire is a main variety of winding wire, which is composed of conductor and insulating layer. After the bare wire is annealed and softened, it is painted and baked many times. However, it is not easy to produce products that meet both standard requirements and customer requirements. It is affected by factors such as raw material quality, process parameters, production equipment, and the environment. Therefore, the quality characteristics of various enameled wires are different, but they all have Mechanical properties, chemical properties, electrical properties, thermal properties four major properties. [0003] Enameled wires are also used in network transformers. At present, the existing enameled wires used in network transformers have poor ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01B13/00H01B13/06H01B13/22H01B13/30B05C1/06B05C11/10B05C11/00
CPCB05C1/06B05C11/00B05C11/10H01B13/00H01B13/0006H01B13/0016H01B13/065H01B13/22H01B13/30
Inventor 沈嘉诚
Owner 湖州中洲电磁线有限公司
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