A kind of preparation method of nickel-plated copper mica winding wire

Abstract

The invention relates to a method for preparing a nickel-plated copper mica winding wire, comprising the following steps: a. coating the outer surface of a copper conductive core with a nickel-plated layer to form a nickel-copper wire; b. calibrating the nickel-copper wire; c. , carry out the preheating treatment of 60-80 ℃ of nickel-copper wires after the correction, then coat the silicone resin layer A on the nickel-plated layer, and coat the silicone resin layer A at a temperature of 90-110 ℃ of baking f, winding a corona-resistant mica layer on the coating silicone resin layer A; e, wrapping a single layer on the corona-resistant mica layer is 360 alkali-free and boron-free glass fiber layers, and then impregnating the silicone resin , through the pre-curing treatment of 110-130 ℃ temperature; f, through 150-160 ℃ of temperature baking drying, baking and drying lasts 10-15min, the whole wire is dipped in silicone resin, and then staged temperature-controlled baking is carried out, Carry out curing treatment. By replacing the polyimide enameled wire with nickel-plated copper as the conductive wire core, the mica layer reinforcement structure is added.

Description

technical field [0001] The invention relates to the technical field of nuclear power equipment, in particular to a method for preparing a nickel-plated copper mica winding wire. Background technique [0002] Nuclear energy is a clean, safe and efficient energy source. It is currently the only energy nuclear energy that can achieve industrial application and can replace fossil fuels on a large scale. It is an effective way to reduce environmental pollution and achieve coordinated development of economy and ecological environment. In a nuclear power plant, the control rod drive mechanism (CRDM) is the key equipment of the nuclear island and plays a vital role in the safe operation of the nuclear power plant. The coil winding wire is the supporting material in the CRDM coil assembly. It is generally made of polyimide enameled wire wrapped with polyimide film and glass fiber. The reliable working environment temperature is below 220°C. [0003] China Patent Authorization Announ...

AI Technical Summary

Problems solved by technology

However, with the development of technology, the requirements for coil operating temperature and radiation resistance are getting higher and higher. The conventional polyimide enameled wire is wrapped with polyimide film and glass filaments. Due to the thin thickness of the wire insulation, the composite insulation The difference in layer structure distribution directly affects the overall mechanical and electrical performance of the wire. The phenomenon of high-voltage breakdown and low withstand voltage in water is common, which cannot be applied to the needs of some nuclear power projects.

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