Online thinning device of copper clad aluminum wire

Abstract

The invention relates to manufacture equipment of new materials in power and electronic industries, in particular to an online thinning device of a copper clad aluminum wire, comprising a base. A main shaft is axially fixed on the base and provided with a shaft hole for the penetration of the copper clad aluminum wire along the axis, the main shaft is connected with a rotary disc which can rotate relative to the main shaft and is provided with a guard cap for sealing the rotary disc, an outgoing wire corresponding to the shaft hole is arranged on the guard cap, and a cavity is arranged at the left side of the rotary disc and internally provided with a thinning device which is connected with the right side wall of the cavity. The invention has the advantages of removing a gas between a copper layer and an aluminum rod by rolling the copper clad aluminum wire, avoiding the secondary oxidization of air entering the gap between the copper layer and the aluminum rod in a cooling process after welding, preventing copper layer damage and miss aluminum points often occurring in a pulling process of the copper clad aluminum wire, and improving the yield of products.

Description

Technical field [0001] The invention relates to equipment for manufacturing new materials in the electric power and electronic industries, in particular to an online diameter reduction device for copper-clad aluminum bus bars. Background technique [0002] At present, the known copper-clad aluminum cladding welding method, the basic process is as follows: after the aluminum rod diameter is pretreated, the copper strip and aluminum rod are simultaneously introduced into the pre-processing machine, and under the power of the cladding machine, it passes through the inner The steel wire wheel washes the surface of the copper strip and the surface of the aluminum rod respectively, and then the open tube is formed by the cladding welder shaping the roller, and at the same time, it is welded into a seamless tube by inferiority argon arc welding to form a copper-clad aluminum disk round embryo The wire is drawn in multiple passes to form a finished copper-clad aluminum wire. [0003] Due ...

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Problems solved by technology

[0003] Due to the requirements of the cladding welding process, a certain gap must be left between the aluminum rod and the copper layer. During the cladding welding process, the temperature of the copper strip and the aluminum rod is very high after being rubbed by a wire brush. When entering the cladding welding, the original The temperature is further increased, and the gap between the copper tube and the aluminum rod is a positive pressure at this time. When welding continues over time, the copper-clad aluminum wire after welding also decreases with time and temperature. At this time, the copper tube The gap with the aluminum rod is a negative pressure, and the air is continuously sucked in. The joint surface of the copper strip after pretreatment will produce secondary oxidation, especially in the case of high air humidity, the growth of the oxide layer is intensified, due to the increase of the oxide layer on the joint surface Existence, which seriously affects the combination between copper atoms and aluminum atoms, and copper layer breakage and aluminum leakage points often occur during the drawing process, which reduces the yield

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