Production method for aluminum wire twisted crimping terminal structure of reactor

Abstract

The invention provides a production method for an aluminum wire twisted crimping terminal structure of a reactor, which is characterized by comprising the steps of: directly extending a reactor aluminum wire to serve as an aluminum outgoing line, removing the oil dirty on the aluminum outgoing line, drying, infiltrating the aluminum wire into tin fluid, enameling tin by ultrasonic wave, crimping a copper crimping terminal on the tin enameled aluminum outgoing line, and painting at last. According to the production method for the aluminum wire twisted crimping terminal structure of the reactor provided by the invention instead of cold-pressed welding a copper wire on an aluminum twisted wire reactor outgoing terminal in the prior art, the production efficiency is increased, and the copper material is saved. Meanwhile, according to the production method for the aluminum wire twisted crimping terminal structure of the reactor provided by the invention, the low-temperature tin enameling of aluminum wires and busbars can be implemented, the problem that the oxidation film is difficultly coated on the aluminum due to the compact surface is solved, in a manner of speaking, the problem that the coated tin film is not strong in adhesion force because the aluminum metal has high oxidation rate in the air is solved.

Description

technical field [0001] The invention relates to a method for preparing a lead wire of an aluminum wound wire reactor. Background technique [0002] At present, the reactors with aluminum winding wires use cold-pressed soldered copper wires as lead-out wires, and then crimp tinned copper terminals, and then fill tin solder between the lead-out copper wires and the connection terminals, thus completing the process. Terminal preparation. This method has some disadvantages, which limit the performance and service life of this kind of reactor. The disadvantages are: 1) The production efficiency of the copper-aluminum transition line is low, which increases the product cost; 2) As the price of copper rises, the use of copper-aluminum transition line also greatly increases the product cost. 3) Cold-press welded copper-aluminum transition joints are prone to brittleness, and will age in 200-300 hours at 200°C; at 100°C, the service life is only 6-7 years; 4) Electrochemical elect...

AI Technical Summary

Problems solved by technology

This method has some disadvantages, which limit the performance and service life of this kind of reactor

The disadvantages are: 1) The production efficiency of the copper-aluminum transition line is low, which increases the product cost; 2) As the price of copper rises, the use of copper-aluminum transition line also greatly increases the product cost

3) Cold-press welded copper-aluminum transition joints are prone to brittleness, and will age in 200-300 hours at 200°C; at 100°C, the service life is only 6-7 years; 4) Electrochemical electrodes of copper-aluminum metal The potential difference is very large. During use, especially under hot and humid conditions, electrochemical corrosion is prone to occur at the copper-aluminum welding place, which makes the electrical performance of the terminal deteriorate sharply and affects the service life of the reactor; 5) cold pressure welding is easy Lead to bad phenomena such as virtual welding and low welding strength, which will easily lead to falling off or breaking in the subsequent processing process, increasing the rate of defective products

However, when tin and its alloys exceed a certain temperature, especially in the molten state, they are prone to oxidative corrosion and discoloration in different degrees during the production process, forming tin oxide.