Production process of paper-covered soft copper stranded wire

Abstract

The invention discloses a production process of a paper-covered soft copper stranded wire, which comprises a soft copper stranded wire manufacturing process, an insulated paper making process and a wire and paper combining process in turn, wherein the soft copper stranded wire manufacturing process comprises making a copper-silver alloy wire, making a core primary wire, making a core secondary wire and making a core wire in turn; after being made, the core wire is inserted to the inside of the insulated paper layer and is drawn back and forth for ensuring the smooth clearance fit between the core wire and the insulated paper layer; a liquid epoxy resin curing agent is poured into the gap between the core wire and the insulated paper layer along the core wire; after the liquid epoxy resin curing agent is cooled, a paper-covered soft copper stranded wire blank can be obtained; and the paper-covered soft copper stranded wire can be obtained by cleaning the blank. The production process can produce the paper-covered soft copper stranded wire with high electric conductivity and heat conductivity, high electrical insulation strength and high mechanical performance; and the production cost is low.

Description

technical field [0001] The invention relates to a production process of annealed copper stranded wire, in particular to a production process of paper-covered annealed copper stranded wire, which is particularly suitable for the production of paper-encased annealed copper stranded wire for oil-immersed transformers and internal connecting wires of electrical equipment. Background technique [0002] Paper-wrapped soft copper stranded wire is suitable for internal connection wires of various oil-immersed transformers and electrical equipment, such as the porcelain sleeve on the high-voltage side of the transformer, the lead wire of the switch, and the medium and low-voltage wiring of large and medium-sized transformers, so the paper-wrapped soft copper The stranded wire not only needs to have good electrical and thermal conductivity, but also needs to have good mechanical properties to ensure that it will not be deformed or broken during use, which puts forward higher requiremen...

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Problems solved by technology

[0004] The purpose of the present invention is to overcome the defects and problems of poor electrical and thermal conductivity, weak electrical insulation strength, and poor mechanical properties in the prior art, and provide a product that can produce a product with good electrical and thermal conductivity and strong electrical insulation strength. , Production process of paper-wrapped annealed copper stranded wire with better mechanical properties

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