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Rare earth-copper alloy wire for railway electric power continuous lines, and preparation method thereof

A rare earth copper and alloy wire technology is applied in the fields of non-ferrous metal wire processing and forming, and copper alloy material preparation. , to ensure the effect of purity

Inactive Publication Date: 2018-06-29
有研科技集团有限公司 +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to overcome the inability of existing rare earth copper alloy conductors to meet the requirements of railway power through-wires, the present invention proposes a preparation method of high wear-resistant, cold and heat-resistant, high-conductivity rare earth copper alloys and wires for railway power through-wires

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] The rare earth content is 0.01%, and the high-purity electrolytic copper plate and high-purity mixed rare earth are placed in a vacuum induction furnace according to the proportion, and the vacuum degree in the furnace is 1.0×10 -2 Pa, heated to 1150 ℃ ~ 1250 ℃, smelted into a rare earth copper alloy ingot with a diameter of Φ150mm; put the rare earth copper alloy ingot into the electron beam melting furnace, vacuumize the furnace body and the gun chamber, and the vacuum of the gun chamber is 1.0 ×10 -4 Pa, the vacuum in the furnace is 1.0×10 -3 Pa, through electron beam melting, solidification, purification and removal of impurities, a rare earth copper alloy ingot with a diameter of Φ200mm and high cleanliness is obtained. Remove and polish the surface defects of the ingot, put it into a heating furnace protected by an inert gas such as argon, and heat it. When it is heated to 800°C, keep it warm for 4 hours and then carry out water-sealed extrusion. The preheating t...

Embodiment 2

[0030] The rare earth content is 0.003%, and the high-purity electrolytic copper plate and high-purity mixed rare earth are placed in a vacuum induction furnace according to the proportion, and the vacuum degree in the furnace is 5.0×10 -3 Pa, heated to 1200 ° C ~ 1250 ° C, smelted into a rare earth copper alloy ingot with a diameter of Φ180mm. Put the rare earth copper alloy ingot into the electron beam melting furnace, vacuum the furnace body and gun chamber, the vacuum of the gun chamber is 2.5×10 -5 Pa, the vacuum in the furnace is 5.0×10 -4 Pa, through electron beam smelting, solidification, purification and removal of impurities, a rare earth copper alloy ingot with a diameter of Φ300mm and high cleanliness is obtained. Remove and polish the surface defects of the ingot, put it into a heating furnace protected by an inert gas such as argon, and heat it. When it is heated to 780°C, keep it warm for 4.5 hours and then carry out water-seal extrusion. The extrusion mold is ...

Embodiment 3

[0032] The rare earth content is 0.04%, and the high-purity electrolytic copper plate and high-purity mixed rare earth are placed in a vacuum induction furnace according to the proportion, and the vacuum degree in the furnace is 1.0×10 -2 Pa, heated to 1240 ° C ~ 1300 ° C, smelted into a rare earth copper alloy ingot with a diameter of Φ150 mm. Put the ingot of rare earth copper alloy into the electron beam melting furnace, and evacuate the furnace body and the gun chamber, and the vacuum of the gun chamber is 5×10 - 4 Pa, the vacuum in the furnace is 3.0×10 -3 Pa, through electron beam melting, solidification, purification and impurity removal, a rare earth copper alloy ingot with a diameter of Φ200mm and high cleanliness is obtained. Remove and polish the surface defects of the ingot, put it into a heating furnace protected by an inert gas such as argon, and heat it. When it is heated to 850°C, keep it warm for 4 hours and then carry out water-sealed extrusion. The preheat...

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Abstract

The invention relates to a rare earth-copper alloy wire for railway electric power continuous lines, and a preparation method thereof, and belongs to the technical fields of preparation of copper alloy materials and processing of nonferrous metal wires. The rare earth-copper alloy wire contains rare earth and copper, the content of the rare earth is 0.003-0.05%, the total content of gas elements is less than 20 ppm, and the rare earth is mixed rare earth composed of two or more of lanthanum, cerium, praseodymium, neodymium and yttrium. A high-purity rare earth-copper alloy ingot is prepared through purifying a copper melt by a vacuum induction melting and vacuum electron beam melting duplex technology and the rare earth; and a rare earth-copper alloy wire having certain size specificationsis obtained by cold rolling and cold drawing, and the drawn wire is cleaned and vacuum-annealed. The high-purity rare earth-copper alloy wire produced in the invention has good resistance to wear, cold and heat, has an oxygen content of below 5 ppm, has a conductivity of 98.5-101.8% IACS, and has good application prospect in the railway electric power continuous lines.

Description

technical field [0001] The invention belongs to the technical field of preparation of copper alloy materials and processing and forming of non-ferrous metal wires, and relates to a high wear-resistant, cold and heat-resistant, high-conductivity rare earth copper alloy wire for railway power through-wires and a preparation method thereof, especially a kind of railway power through-wire Rare earth copper alloy wire and its preparation method. 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 service area of ​​the railway power through line is large and the environment is diverse. The conductor material must not only meet the requirements of high-con...

Claims

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Application Information

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IPC IPC(8): C22C9/00C22C1/02C22F1/02C22F1/08B21C37/04
CPCC22C9/00B21C37/047C22C1/02C22F1/02C22F1/08
Inventor 郭胜利李德富樊建中王斌晓赵鲁彬段静栝孙鹏刘航崔小岳赵丽娜
Owner 有研科技集团有限公司
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