Copper alloy conductor for railway electric power transmission line and preparation method thereof

A technology of copper alloy conductors and copper-silver alloys, which is applied in metal/alloy conductors, cable/conductor manufacturing, conductors, etc., can solve the problems that copper-silver alloy wires cannot meet the requirements of railway power through-wires, eliminate casting defects, improve Corrosion resistance, effect of microstructure refinement

Inactive Publication Date: 2018-07-10
GENERAL RESEARCH INSTITUTE FOR NONFERROUS METALS BEIJNG +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to overcome the problem that the copper-silver alloy wire prepared by the casting + rolling / drawing process and the continuous casting and rolling process cannot meet the requirements for the conductor material of the railway power through-wire, the present invention proposes a high-resistant Preparation method of abrasive, corrosion-resistant, high-conductivity copper alloy conductor

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] The silver content is 0.05%. The high-purity electrolytic copper plate is placed in a medium-frequency induction furnace, heated to 1180 ° C ~ 1200 ° C, high-purity silver is added according to the proportion, and stirred, and then horizontally cast into a Φ120mm copper-silver alloy ingot. Grind and clean the horizontal continuous casting rods, put them into the vacuum consumable remelting furnace, and vacuumize to 6×10 -3 Pa, refine the copper-silver alloy under high vacuum, eliminate harmful gases and impurities such as oxygen, hydrogen, nitrogen, etc., and remelt it into a Φ150mm ingot at self-consumption. Put the vacuum self-consumable remelting ingot into the electron beam melting furnace, and vacuum the furnace body and gun chamber. The vacuum of the gun chamber is 5×10 -5 Pa, the vacuum in the furnace is 5.0×10 - 4 Pa, through electron beam smelting for secondary purification and impurity removal, a copper-silver alloy ingot with a diameter of Φ200mm and high c...

Embodiment 2

[0029] The silver content is 0.08%. The high-purity electrolytic copper plate is placed in a medium-frequency induction furnace, heated to 1190 ° C ~ 1220 ° C, high-purity silver is added according to the proportion, and stirred, and then horizontally cast into a Φ130mm copper-silver alloy ingot. Grind and clean the horizontal continuous casting rods, put them into the vacuum consumable remelting furnace, and vacuumize to 6×10 -3 Pa, refine the copper-silver alloy under high vacuum, eliminate harmful gases and impurities such as oxygen, hydrogen, nitrogen, etc., and remelt it into a Φ150mm ingot at self-consumption. Put the vacuum self-consumption remelting ingot into the electron beam melting furnace, and vacuum the furnace body and gun chamber. The vacuum of the gun chamber is 1.5×10 -4 Pa, the vacuum in the furnace is 1.5×10 -3 Pa, through electron beam smelting for secondary purification and impurity removal, a copper-silver alloy ingot with a diameter of Φ250mm and high ...

Embodiment 3

[0031] The rare earth content is 0.1%. Put the high-purity electrolytic copper plate into the medium-frequency induction furnace, heat it to 1200℃~1240℃, add high-purity silver according to the proportion, stir it, and then horizontally cast it into a Φ130mm copper-silver alloy ingot. Grind and clean the horizontal continuous casting rods, put them into the vacuum consumable remelting furnace, and vacuumize to 6×10 -3 Pa, refine the copper-silver alloy under high vacuum, eliminate harmful gases and impurities such as oxygen, hydrogen, nitrogen, etc., and remelt it into a Φ150mm ingot at self-consumption. Put the vacuum self-consumption remelting ingot into the electron beam melting furnace, and vacuum the furnace body and gun chamber. The vacuum of the gun chamber is 2.5×10 -4 Pa, the vacuum in the furnace is 2.5×10 -3 Pa, through electron beam smelting for secondary purification and impurity removal, a copper-silver alloy ingot with a diameter of Φ200mm and high cleanliness ...

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Abstract

The invention relates to a copper alloy conductor for a railway electric power transmission line and a preparation method thereof and belongs to the technical field of non-ferrous metal conductor processing, copper alloy preparation and cable manufacture. The copper alloy is a copper-silver two-component alloy having silver content of 0.05% to 0.12%. Through a vacuum self-consuming melting-vacuumelectron beam melting combined technology, a molten copper-silver rod is cleaned and purified and harmful gas such as oxygen, hydrogen and nitrogen and harmful impurities are eliminated so that the high purity and high clarity of the copper-silver alloy are realized. Through large extrusion ratio deformation, casting defects are eliminated, the micro-structure is refined and the plasticity of thealloy is improved. The later drawing process is free of annealing and the total deformation of drawing is 50% to 75%. The preparation method can produce the high purity and high clarity copper-silverconductor, has gas element content of less than 10ppm, oxygen content of less than 3ppm and conductivity of 100.5% to 102.5% IACS and can be used for preparation of wear-resistant and corrosion-resistant railway power transmission line.

Description

technical field [0001] The invention belongs to the technical field of non-ferrous metal wire processing and forming and railway power through-wire manufacturing, and relates to a method for preparing a highly wear-resistant, corrosion-resistant and high-conductivity copper alloy conductor for railway power through-wires, in particular to a copper alloy for power through-wires Conductors and methods of making them. Background technique [0002] Railway power through-lines provide power for railway loads including signal systems, production departments, stations, water supply systems, and daily life. The reliability of its power supply directly affects the normal and safe operation of the railway transportation system, and is also related to the normal work of various railway departments. The copper stranded cores of railway power through-lines are easily worn during transportation and installation, resulting in voltage instability; some railway power through-lines have been ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C9/00C22F1/08C22C1/02C22B9/20C22B9/22H01B1/02H01B13/00
CPCC22B9/20C22B9/228C22C1/02C22C9/00C22F1/08H01B1/026H01B13/00
Inventor 郭胜利李德富樊建中周晋赵鲁彬高汝英孙汝杨周介圭户其晓王斌晓
Owner GENERAL RESEARCH INSTITUTE FOR NONFERROUS METALS BEIJNG
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