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Method for producing braided cable

A production method and braided cable technology, applied in communication cables, cable/conductor manufacturing, conductor/cable insulation, etc., can solve problems such as waste of metal materials, poor effect, and failure to meet high-end requirements, and achieve high-frequency attenuation The effect of low performance, good impedance uniformity and standing wave stability, stable consistency

Inactive Publication Date: 2013-04-03
ZHEJIANG DETONG TECH
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AI Technical Summary

Problems solved by technology

[0003] At present, some manufacturers increase the braiding density of the outer conductor braiding layer of braided cables to more than 90%, but the shielding attenuation can only reach 85%, which cannot meet the high-end requirements. Therefore, increasing the braiding density to improve the shielding effect is not good. A lot of metal material is wasted

Method used

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Examples

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Embodiment 1

[0025] A production method of a braided cable, characterized in that: comprising the following steps,

[0026] a) Making the inner conductor: plate a layer of copper on one side of the aluminum strip or press the copper strip and the aluminum strip to form a strip-shaped copper-aluminum sheet, roll the copper-aluminum sheet perpendicular to the length direction, and make A long tube-shaped copper-clad aluminum wire with a ring-shaped cross section, and the copper layer or copper strip is in the outer layer, wherein the mass percentage of copper in the copper-clad aluminum wire is 25-28%, and the copper The surface conductivity of the aluminum-clad wire is not lower than 55MS / m at room temperature, wherein the room temperature is 20-25°C, and the difference in cross-sectional diameters of different parts of the outer conductor along the length direction of the outer conductor is not greater than these differences 5% of the mean diameter of the cross-section of the part;

[002...

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Abstract

A method for producing a braided cable is characterized by comprising steps of manufacturing an inner conductor; manufacturing an insulating medium; manufacturing an outer conductor; and manufacturing a sheath. The method has the advantages that a manufacturing process is accurately controlled, and stable consistency, high impedance uniformity and high stability of standing waves are guaranteed; and an insulating layer is stable in foaming degree and excellent in electric performance, and is particularly low in high-frequency attenuation property, and the outer conductor is good in bending property.

Description

technical field [0001] The invention relates to a production method of a braided cable, which belongs to the communication field. Background technique [0002] Communication cables are widely used today with the rapid development of communication technology. In order to ensure the effective transmission of communication signals, there are many requirements on the physical characteristics of communication cables in the market. For example, the US military standard requires the shielding attenuation of communication cables to be 90dB, and the transmission attenuation: 30MHZ-2.2dB, 50MHZ-2.9dB, 150MHZ-5.0dB, 220MHZ-6.1dB, 450MHZ-8.9dB, 900MHZ-12.8dB, 1500MHZ-16.8dB, 1800MHZ-18.6dB, 2000MHZ-19.6dB, 2500MHZ-22.2dB, 5800MHZ-35.5dB, transmission rate: 85%. Among them, shielding attenuation is a great bottleneck, especially for braided cables. [0003] At present, some manufacturers increase the braiding density of the outer conductor braiding layer of braided cables to more than...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01B13/06H01B13/24H01B11/00
Inventor 张祥金陈长军黄军武
Owner ZHEJIANG DETONG TECH
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