Water-blocking type radio frequency coaxial cable and manufacturing process thereof

Abstract

The invention discloses a water-blocking type radio frequency coaxial cable and a manufacturing process thereof. The cable is sequentially equipped with a cable inner conductor, an insulating layer, an outer conductor and a protective layer from inside to outside, wherein the outer conductor is made of extruded aluminum rods, the aluminum rods are continuously extruded into aluminum tubes, and the aluminum tubes are subjected to processes such as stretching, cooling and embossing. The manufacturing process comprises the following specific steps of: adopting two aluminum rods as blank, carrying out straightening, alkali-washing and blow-drying on the two aluminum rods under the normal temperature, and strongly guiding the two aluminum rods into a machine; after the two aluminum rods enter the machine, adopting a medium-frequency inducting ring to induct and heat the two aluminum rods in sections, and homogenizing and extruding by use of a carbon-steel screw with extremely high strength and a screw barrel; and then, carrying out dividing and splice-grafting to form aluminum tubes with uniform thicknesses, stretching the aluminum tubes, coating the surface of a core cable with the aluminum tubes in a spaced manner, quickly cooling by pure water subjected to low-temperature treatment during coating, and embossing. According to the water-blocking type radio frequency coaxial cable and the manufacturing process thereof disclosed by the invention, influences on the insulating property during long-time operation in water of the radio frequency coaxial cable of solder-skip water seepage of welding seams are solved, good water-blocking effects and social benefits are achieved.

Description

technical field [0001] The invention relates to a radio frequency coaxial cable product and its manufacturing process in the field of communication transmission, in particular to a water-blocking radio frequency coaxial cable and its manufacturing process. The outer conductor of the cable is manufactured by extruding an aluminum rod into an aluminum tube, and the protective layer is The water-repellent polymer material is made by molding extrusion process, and finally a radio frequency coaxial cable can be laid in water for long-term use. This type of cable can be used in special occasions where communication signals need to be transmitted in water, and can be widely used in mines, cabins, concealed underwater facilities, and ordinary communication base stations, underground pipelines, grooves, ditches and other closed area space communications covered by water Signal transmission. Background technique [0002] RF coaxial cable, also known as feeder, is a communication cabl...

AI Technical Summary

Problems solved by technology

When the cable runs in water for a long time, the insulation dielectric constant will gradually increase, the attenuation constant will gradually increase, and the signal transmission performance will gradually weaken.

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