High temperature-resisting enameled wire and manufacturing method thereof

Abstract

The invention discloses a high temperature-resisting enameled wire and a manufacturing method thereof. The high temperature-resisting enameled wire comprises a drawn copper core wire which is treated by an annealing process for two or more times, superfluous stress among copper atoms is removed, and the surface of the drawn copper core wire is covered by at least two layers of insulating paint in the thermal class of 155 or 180 DEG C. The high temperature-resisting enameled wire has the following advantages that: 1, the thermal properties of the enameled wire are improved by replacing the paint with the low thermal class by the pain with a higher thermal class; 2, by using a painting mode of coating the thin paint for multiple times and taking the paint with high adhesiveness as priming paint, the adhesiveness of each layer of paint film is enhanced, and the winding performance of the enameled wire is improved; and 3, the copper serving as a raw material is produced by annealing for two or more times instead of the original one time, so that the arrangement sequence of the copper atoms is changed, the superfluous stress among the copper atoms is removed, and the extensibility and the flexibility of the enameled wire are enhanced.

Description

technical field [0001] The invention relates to an enameled wire with improved performance and a manufacturing method thereof. Background technique [0002] The enameled wires of developed countries such as Europe and the United States (except Japan using JIS standards) are basically produced by the United States (NEMA Standard). line) is imminent. [0003] Compared with JIS, IEC, and GB standard wires, there is a big difference between American standard wires. Because the European and American industries are very developed, and their power and energy industries have been relatively well developed, they have a good understanding of the thermal shock resistance, coilability, and Both elongation and softness have strict requirements. Many enameled wires produced in China do not meet the American standards, and generally have the following problems: low thermal shock resistance, poor winding resistance, poor elongation and softness. After winding into a coil, the paint skin ...

AI Technical Summary

Problems solved by technology

Many of the enameled wires produced in China do not meet the American standards, and generally have the following problems: low thermal shock resistance, poor winding resistance, poor elongation and softness

After winding into a coil, the paint skin at the corner is broken, the customer is soldering the skin at the corner is broken, and after winding into a finished product, the customer finds that the voltage is poor when passing the IR furnace test, and the wire is easy to break after winding.

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