Manufacturing method of F-level electromagnetic wire

Abstract

The invention relates to a manufacturing method of a single-side reinforcement F-level electromagnetic wire, and the manufacturing method provided by the invention is lower in manufacturing cost, is suitable for energy conservation and emission reduction, and can be used for reducing the environmental pollution and ensuring the product performance to be higher. The manufacturing method comprises the following steps: adding a polyester resin into a nano material subjected to surface activation treatment and uniformly stirring to obtain an insulation resin for later use; delivering the insulation resin into an extruder hopper, enabling the insulation resin to be in a high-temperature viscous flow state by virtue of an extruder and continuously extruding the insulation resin from the die sleeve port of the extruder; meanwhile, aligning and preheating a bare copper wire, enabling the aligned and preheated bare copper wire to pass through a forming die of a machine head of the extruder, and packaging the insulation resin extruded from the die sleeve onto the bare copper wire; and cooling the bare copper wire covered with the insulation resin so as to obtain the F-level electromagnetic wire. The proportion of an inorganic nano material is suitable for improving the heat resistance of an insulating layer, and the manufactured electromagnetic wire can achieve F-level insulation; and the coefficient of heat conductivity achieves 0.55 W / Mk, and the thickness of the insulating layer is adjusted within a range of 0.15-1.4 mm ( bifacial thickness).

Description

technical field [0001] The invention relates to the technical field of electromagnetic wire manufacturing for electricians, and relates to a new manufacturing process for electromagnetic wires used in high-voltage generators, high-voltage motors, rail traction motors, variable-frequency speed-regulating motors, wind power generators, etc., specifically a class F electromagnetic wire manufacturing method. Background technique [0002] In the electrical industry, magnet wire is in great demand. Generally, there are two types of magnet wires used in the motor and electrical industry: enameled wire and wrapped wire. In the enameled wire manufacturing process, the solid content of the enameled wire varnish is very small, less than 20%. To achieve a certain thickness of the paint film, it must be painted and baked many times to volatilize the solvent and cure the paint film. Not only wasting a large amount of organic solvents, but also causing serious pollution to the environmen...

AI Technical Summary

Problems solved by technology

[0003] How to solve the problems of pollution and high energy consumption in the production process of magnet wire, and at the same time improve the performance of magnet wire is a technical problem in this field

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