Preparation method of copper-silver alloy contact wire for trunk line electrification

A technology of copper-silver alloy and contact wire, which is applied in the field of wire, can solve the problem that the mechanical properties of the contact wire cannot meet the electrification operation of high-speed railways, and achieve the effect of good locomotive pick-up performance, good flatness, and fine grains

Active Publication Date: 2013-09-25
山东维点技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a method for preparing a copper-silver alloy contact wire for railway electrification, so as to solve the problem that the mechanical properties of the existing contact wire cannot meet the needs of high-speed railway electrification operation

Method used

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Embodiment 1

[0020] A method for preparing a copper-silver alloy contact wire for railway electrification. The composition of the contact wire is as follows by weight percentage: 0.08-0.09% silver, 0.008-0.010% zirconium, 0.008-0.01% niobium, 0.005-0.008% titanium, and 0.018-0.018% mixed rare earth 0.020%, the remaining material is copper, and the preferred copper content is ≥ 99.95% cathode copper. The mixed rare earth is composed of yttrium, berkelium and lanthanum, and the mass ratio of the three is 1:0.2:0.5; the preparation steps are as follows:

[0021] (1) Copper-silver alloy casting rods are produced by upward continuous casting method: the copper material and various alloy metals are divided into multiple parts, and evenly put into the submerged electromagnetic stirring power frequency induction combined electric furnace in proportion to be melted into a melt, and The molten copper is covered with charcoal, and argon gas is introduced to form an atmosphere protection, and then it i...

Embodiment 2

[0026] A method for preparing a copper-silver alloy contact wire for railway electrification. The composition of the contact wire is as follows by weight percentage: 0.08-0.09% silver, 0.008-0.010% zirconium, 0.008-0.01% niobium, 0.005-0.008% titanium, and 0.018-0.018% mixed rare earth 0.020%, silicon carbide 0.006-0.007%, the remaining material is copper, the copper cathode copper with a content of ≥99.95% is preferred, the mixed rare earth is composed of yttrium, berkelium and lanthanum, and the mass ratio of the three is 1:0.2:0.5; silicon carbide is selected The preparation steps of α-SiC particles with a particle size of 8-10 μm are as follows:

[0027] (1) Copper-silver alloy casting rods are produced by upward continuous casting method: copper material, various alloy metals and silicon carbide are divided into multiple parts, and evenly put into submerged electromagnetic stirring power frequency induction combined electric furnace in proportion to smelting. liquid, and ...

Embodiment 3

[0032] A method for preparing a copper-silver alloy contact wire for railway electrification. The composition of the contact wire is as follows by weight percentage: 0.08-0.09% silver, 0.008-0.010% zirconium, 0.008-0.01% niobium, 0.005-0.008% titanium, and 0.018-0.018% mixed rare earth 0.020%, four-needle zinc oxide whisker 0.006-0.007%, the remaining material is copper, copper cathode copper with a preferred content ≥ 99.95%, mixed rare earths are composed of yttrium, berkelium and lanthanum, and the mass ratio of the three is 1:0.2: 0.5; tetraacicular zinc oxide whiskers preferably have a length of 10-12 μm and a diameter of 3-5 μm. The preparation steps are as follows:

[0033] (1) Copper-silver alloy cast rods are produced by upward continuous casting method: divide copper material, various alloy metals and four-needle zinc oxide whiskers into multiple parts, and put them into submerged electromagnetic stirring power frequency induction combination evenly at proportional in...

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Abstract

The invention relates a preparation method of a copper-silver alloy contact wire for trunk line electrification. The copper-silver alloy contact wire consists of a copper base and alloy metal, wherein the alloy metal comprises the following components in percentage by weight: 0.08-0.09% of silver, 0.008-0.010% of zirconium, 0.008-0.01% of niobium, 0.005-0.008% of titanium and 0.018-0.020% of mixing rare earth. The preparation process comprises up-drawn continuous casting, continuous extrusion, cold rolling and drawing sequentially. The oxygen content of the prepared contact wire is on a level of oxygen-free copper, and the contact wire is small in crystalline grain, high in mechanical performance, uniform in a length direction, good in flatness, excellent in locomotive getting performance, and higher in tensile strength, ductility, grain size and flexibility in comparison with an existing lead wire; the contact wire has an application value of being popularized in a large range in the high-speed trunk line electrification field.

Description

technical field [0001] The invention relates to the field of wires, in particular to a method for preparing a copper-silver alloy contact wire for railway electrification. Background technique [0002] In order to meet the needs of high-speed economic development, my country's electrified railway is developing towards high-speed and heavy-duty. The country also regards the construction of high-speed railway as a key project in the "Twelfth Five-Year Plan", which puts forward higher requirements for the quality of contact wires. Require. The contact wire transmits electric energy to the electric locomotive through contact with the pantograph of the electric locomotive. It is one of the key components to ensure the normal operation of the electrified railway. It has high mechanical strength, high anti-softening temperature and wear resistance. Due to the limitations of domestic traditional production technology, domestic contact wires have low strength, poor straightness, wea...

Claims

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Application Information

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IPC IPC(8): C22C9/00C22C1/02C22F1/08C21D8/06H01B1/02H01B5/02
Inventor 燕志富孟文光李忠茂徐祥思玄秀芹
Owner 山东维点技术有限公司
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