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Preparation method of copper covered steel woven wire special for communication cable shielding layer

A communication cable, copper-clad steel technology, applied in cable/conductor manufacturing, metal extrusion cleaning equipment, circuits, etc., can solve the problems of high tensile strength, reduced tensile strength, and low-cost copper-clad steel thin wires Achieve the effect of low tensile strength, good flexibility, and not easy to break

Inactive Publication Date: 2008-08-13
仲庆
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Copper-clad steel wire is composed of a steel core wire and a copper layer tightly covering it. It has both the electrical conductivity of copper and the tensile strength of steel. When used as a wire, it can save a lot of copper, but the existing Copper-clad steel thin wires are not suitable for braiding communication cable shielding due to their high tensile strength and low elongation, because copper-clad steel thin wires with high tensile strength and low elongation will frequently break during weaving, Unable to produce cable shield normally
Since the preparation method of copper-clad steel thin wires that further reduces the tensile strength and increases the elongation has not been mastered, until now, low-cost copper-clad steel thin wires that meet the requirements of the braided communication cable shielding layer have not been produced.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0016] 1. Rough drawing: take the high-quality low-carbon steel wire with a diameter of 5.5-6.5mm, first remove the oxide layer (commonly known as peeling) process, then use a large wire drawing machine to stretch the wire to a diameter of 2.5-3.5mm, and then pickling , Alkali neutralization, cleaning process, and then the first heat treatment, put the drawn coil into a well-type annealing furnace to heat to 700-780 degrees Celsius, constant temperature for 6-10 hours (depending on the outdoor temperature), Cool down with the furnace for about 12 hours. After the wire is out of the furnace, the wire diameter is drawn to a diameter of 1.0-2.0mm with a water tank wire drawing machine (depending on the length of the subsequent copper plating machine and the current size), and it is wound into an iron plate with a diameter of 400mm (each plate is about 80 kg), Together with the iron pan for the second annealing, the annealing must use a pit electric furnace (because the electric furna...

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Abstract

This invention relates to a preparation method for special steel woven filaments for communication cable shield layers including rough drawing, plating, mid-drawing, fine-drawing and annealing of copper-wrapped steel filaments with the mechanical performance approaching to copper wires, the extension rate of which reaches to 20% and the tensile strength reaches to that of copper wires, so it will not be broken when used in weaving cable shield layers and the product will not be hard and keep fine flexibility.

Description

Technical field [0001] The invention relates to a copper-clad steel wire, in particular to a method for producing a qualified copper-clad steel wire suitable for use in a cable shielding layer. Background technique [0002] Copper-clad steel wire is composed of a steel core wire and a copper layer tightly covering it. It has both the conductivity of copper and the tensile strength of steel. When used as a wire, a large amount of copper can be saved, but the existing Because of the high tensile strength and low elongation of the copper-clad steel wire, it is not suitable for braided communication cable shielding layer, because the copper-clad steel wire with high tensile strength and low elongation will frequently break during braiding. The cable shielding layer cannot be produced normally. Since it has not been able to master the preparation method of copper-clad steel wire that further reduces the tensile strength and increases the elongation rate, until now, there is no low-cos...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01B13/00H01B5/02B21C1/00B21C43/00C25D3/38
Inventor 仲庆
Owner 仲庆
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