Copperized aluminum pipe inner conductor for coaxial cable

Abstract

The invention relates to a copperized aluminum pipe inner conductor for a coaxial cable, which comprises a hollow aluminum alloy pipe (1), and is characterized in that the outer surface of the hollow aluminum alloy pipe (1) is provided with copperized layers (4) which are evenly distributed along the longitudinal direction, and the copperized layers (4) are attached to the outer surface of the hollow aluminum alloy pipe (1) through electroplating. The thickness of the copperized layers (4) is between 0.04 and 0.06 millimeter. The copperized aluminum pipe inner conductor for the coaxial cable has the advantages of low cost, lighter weight, good conductive transmission performance, and simple and reasonable manufacturing process, saves the copper consumption, reduces the process step, and obviously shortens the production cycle of the finished products; besides, by adopting an advanced copperizing process, the thickness of the copper layer is only 1/3 of the original thickness, thus not only the evenness of the copper layer of copper-aluminum composite pipes can be better ensured, but also the compact adhesion of the copper layer can be better achieved.

Description

technical field [0001] The invention relates to the field of cables, in particular to an inner conductor of a copper-plated aluminum tube for a coaxial cable. A conductive copper layer is attached to the outer surface of the aluminum tube of the inner conductor through a copper-plating process. Background technique [0002] As we all know, the commonly used inner conductor materials of radio frequency coaxial cables generally include solid copper wire, copper-clad aluminum wire and copper tube, etc., because copper-clad aluminum has low density, light weight, copper-clad aluminum conductivity, and good anti-corrosion performance. Make copper-clad aluminum products a good material to replace copper products. Due to the lack of copper resources in the world, the demand for copper in the world's economic development is increasing, and the current copper price is rising rapidly. Finding the best copper-aluminum composite material to replace pure copper is an urgent need at prese...

AI Technical Summary

Problems solved by technology

The above two kinds of copper-clad aluminum tubes all adopt the structure of coating the copper layer on the surface of the aluminum tube and then welding. Because of the hollow structure, it not only reduces the weight of the cable, but also reduces the manufacturing cost of the inner conductor. However, the use of this copper The copper-clad aluminum tubes produced by the clad welding process must be welded under the protection of inert gas. During the welding process, problems such as virtual welding and open welding are prone to occur. After multiple drawing and heat treatment processes, the copper-aluminum metallurgical combination can be achieved. It adds difficulty to the improvement of the drawing process and production efficiency, and because of the high number of times of drawing molding, it causes defects such as surface peeling, aluminum exposure, pull marks, easy damage, and broken joints; Welding method to cover the copper layer will inevitably produce longitudinal welding seams, which are prone to problems such as missing welding and virtual welding, making the conductivity of the copper layer unstable. If these problems cannot be solved as soon as possible, the quality and stability of the copper-clad aluminum tube will be seriously affected. sex

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