Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Special electromagnetic wire and preparation method thereof

A kind of electromagnetic wire, a special technology, applied in the field of electromagnetic wire, can solve the problems of copper wire surface oxidation and blackening, inaccurate temperature control, electromagnetic wire insulation layer thickness, etc., to achieve long anti-corona time, uniform heating, and uniform thickness Effect

Active Publication Date: 2020-08-25
HUNAN UNIV OF SCI & TECH
View PDF9 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The use of special engineering materials with high temperature resistance as insulating materials is a necessary condition for improving the temperature resistance of electromagnetic wires, and special engineering materials as insulating layers already have good wear resistance, radiation resistance, good toughness, and voltage resistance. High value, long corona resistance and other properties, the special electromagnetic wire with a single insulating layer on the market generally adopts the traditional thermal radiation heating method to preheat the copper wire to 120-150 ℃, and the heating time is 8-10s, which is easy The surface of the copper wire is oxidized and blackened, and the oxidation is uneven, which affects the adhesion of the insulating layer on the subsequent copper wire, and cannot accurately control the temperature of the copper wire after preheating. If the temperature is too low, the insulating layer is on the electromagnetic wire. If the crystallization is too early, it will affect the performance, if the temperature is too high, it will cause the insulation layer to decompose
In the prior art, an intermediate layer with good adhesion to the copper conductor and good adhesion to the polyether ether ketone insulating layer is generally used between the polyether ether ketone insulating layer and the copper conductor, but the composite insulating layer will As a result, the insulation layer of the magnet wire is thicker, which is not conducive to the current miniaturization requirements of the motor in the field of new energy vehicles.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Special electromagnetic wire and preparation method thereof
  • Special electromagnetic wire and preparation method thereof
  • Special electromagnetic wire and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-6

[0030] Embodiment 1-6 Preparation method of special electromagnetic wire

[0031] The special electromagnetic wire includes a wire and an insulating layer. Embodiments 1-6 are respectively a preparation method of a special electromagnetic wire. The raw materials of the insulating layer of the special electromagnetic wire are shown in Table 1, and the process parameters are shown in Table 2. The preparation method is as follows: Follow these steps:

[0032] 1) Paying off

[0033] After the wire is formed to meet the requirements of the wire, the wire is released;

[0034] 2) Immersion oil

[0035] Place the wires after setting off in the oil immersion device for oil immersion. The oil used is a high temperature resistant mineral synthetic oil with a temperature resistance rating of 200-300°C and a density of 0.986-1.033g / cm 3 , the viscosity is 100-200mPa.s, the oil immersion temperature is 20-60℃, the time is 2-10s, and the sulfur content in the oil is 100-500ppm;

[0036]...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
Temperature classaaaaaaaaaa
Densityaaaaaaaaaa
Viscosityaaaaaaaaaa
Login to View More

Abstract

The invention belongs to the technical field of electromagnetic wires and discloses a special electromagnetic wire and a preparation method thereof. The special electromagnetic wire is prepared through the steps of paying off, oil immersion, preheating, high-temperature extrusion, cooling, take-up and the like. According to the preparation method of the special electromagnetic wire provided by theinvention, the adhesive force between an insulating layer and a wire is improved, the preparation process is environment-friendly, the operation is simple, and the prepared special electromagnetic wire is thin in the insulating layer, uniform in thickness and smooth in surface, and has the characteristics of excellent wear resistance, good toughness, high voltage resistance value, long corona resistance time, hydrolysis resistance and radiation resistance. The preparation method of the special electromagnetic wire is suitable for producing the special electromagnetic wire, and the prepared special electromagnetic wire is suitable for motor equipment.

Description

technical field [0001] The invention belongs to the technical field of electromagnetic wires, and relates to an insulating layer of electromagnetic wires, in particular to a special electromagnetic wire and a preparation method thereof. Background technique [0002] The motor equipment is the heart of the power device, and the quality of the magnet wire determines the service life of the motor, and the performance of the insulating layer material determines the quality of the magnet wire. At present, the temperature resistance level of enameled wire with thinner insulating layer among common domestic electromagnetic wires is up to 240°C. If motors are to be used in special fields, the temperature resistance level of electromagnetic wires must be increased, such as polyphenylene sulfide (PPS), Special engineering plastics with high comprehensive performance such as polyimide (PI), polyether ether ketone (PEEK), liquid crystal polymer (LCP) and polysulfone (PSF) are used as in...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): H01B13/00H01B13/14H01B13/32H01B7/02H01B7/17
CPCH01B7/02H01B7/17H01B13/0016H01B13/14H01B13/145H01B13/322
Inventor 周剑林曾荣今陈述陈建张培盛
Owner HUNAN UNIV OF SCI & TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products