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
View PDF5 Cites 14 Cited by
  • 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

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0019] Example 1

[0020] A method for preparing copper-silver alloy contact wires for railway electrification. The contact wire components are as follows in weight percentage: silver 0.08-0.09%, zirconium 0.008-0.010%, niobium 0.008-0.01%, titanium 0.005-0.008%, mixed rare earth 0.018- 0.020%, the remainder is copper. The copper cathode preferably contains ≥99.95% 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) Manufacture of copper-silver alloy cast rod by upward continuous casting method: divide the copper material and each alloy metal into multiple parts, and evenly put them into the submerged electromagnetic stirring power frequency induction combined electric furnace according to the proportion and smelt into a molten liquid, and The copper liquid is covered with charcoal, and argon gas is passed into it to form an atmosphere protection, and then cool...

Example Embodiment

[0025] Example 2

[0026] A method for preparing copper-silver alloy contact wires for railway electrification. The contact wire components are as follows in weight percentage: silver 0.08-0.09%, zirconium 0.008-0.010%, niobium 0.008-0.01%, titanium 0.005-0.008%, mixed rare earth 0.018- 0.020%, silicon carbide 0.006-0.007%, the remainder is copper, the copper cathode is preferably copper with a content of ≥99.95%, 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 For α-SiC particles with a particle size of 8-10μm, the preparation steps are as follows:

[0027] (1) Manufacture of copper-silver alloy cast rods by upward continuous casting method: divide the copper material, each alloy metal and silicon carbide into multiple parts, and evenly put them into the submerged electromagnetic stirring power frequency induction combined electric furnace at a proportional interval for smelting. The c...

Example Embodiment

[0031] Example 3

[0032] A method for preparing copper-silver alloy contact wires for railway electrification. The contact wire components are as follows in weight percentage: silver 0.08-0.09%, zirconium 0.008-0.010%, niobium 0.008-0.01%, titanium 0.005-0.008%, mixed rare earth 0.018- 0.020%, tetra-needle zinc oxide whiskers 0.006-0.007%, the remainder is copper, the copper cathode preferably contains ≥99.95% 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; Four-needle zinc oxide whiskers are preferably four-needle zinc oxide whiskers with a length of 10-12 μm and a diameter of 3-5 μm. The preparation steps are as follows:

[0033] (1) Manufacture of copper-silver alloy cast rod by upward continuous casting method: divide the copper material, various alloy metals and four-needle zinc oxide whiskers into multiple parts, and evenly put them into the submerged electromagnetic stirring power frequency inducti...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

PropertyMeasurementUnit
Granularityaaaaaaaaaa
Lengthaaaaaaaaaa
Diameteraaaaaaaaaa
Login to view more

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

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
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
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap