Preparation method of copper and magnesium alloy contact wire for railway electrification

A technology of copper-magnesium alloy and contact wire, which is applied in the field of wire, can solve the problems that the mechanical properties of the contact wire cannot meet the electrification operation of high-speed railways, and achieve the effects of good locomotive pick-up performance, improved mechanical properties, grain size and toughness

Active Publication Date: 2013-09-04
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-magnesium 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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Examples

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Effect test

Embodiment 1

[0020] A method for preparing a copper-magnesium alloy contact wire for railway electrification. The composition of the contact wire is as follows by weight percentage: 0.5-0.6% magnesium, 0.012-0.014% zirconium, 0.012-0.014% niobium, 0.005-0.008% titanium, and 0.02-0.02-0.02% mixed rare earth 0.04%, the remaining material is copper, copper cathode copper with a preferred content of ≥99.95%, the mixed rare earths are 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-magnesium alloy cast rods are produced by upward continuous casting method: the copper material and each alloy metal 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 c...

Embodiment 2

[0026] A method for preparing a copper-magnesium alloy contact wire for railway electrification. The composition of the contact wire is as follows by weight percentage: 0.5-0.6% magnesium, 0.012-0.014% zirconium, 0.012-0.014% niobium, 0.005-0.008% titanium, and 0.02-0.02-0.02% mixed rare earth 0.04%, silicon carbide 0.008-0.009%, 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-magnesium alloy casting rods are produced by upward continuous casting method: divide copper material, various alloy metals and silicon carbide into multiple parts, and put them into the submerged electromagnetic stirring power frequency induction combined electric furnace according to the proportion and s...

Embodiment 3

[0032] A method for preparing a copper-magnesium alloy contact wire for railway electrification. The composition of the contact wire is as follows by weight percentage: 0.5-0.6% magnesium, 0.012-0.014% zirconium, 0.012-0.014% niobium, 0.005-0.008% titanium, and 0.02-0.02-0.02% mixed rare earth 0.04%, four-needle zinc oxide whisker 0.010-0.012%, 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-magnesium alloy cast rods are manufactured 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 in p...

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Abstract

A copper and magnesium alloy contact wire for railway electrification comprises a copper base and alloy metal, wherein the alloy metal comprises components in percentage by weight as follows: 0.5-0.6% of magnesium, 0.012-0.014% of zirconium, 0.012-0.014% of niobium, 0.005-0.008% of titanium and 0.02-0.04% of misch metal. A preparation technology adopts an upward continuous casting extrusion-cold rolling-stretching technology. The oxygen content of the prepared contact wire reaches an oxygen-free copper level, the grain is fine, the mechanical property is remarkably improved, the contact wire is uniform in a length direction, the flatness is good, the locomotive picking-up performance is good, the tensile strength, the elongation percentage, the grain size and the toughness are greatly improved when the copper and magnesium alloy contact wire is compared with a conventional wire, and the copper and magnesium alloy contact wire has wide popularization and application values in the high-speed railway electrification field.

Description

technical field [0001] The invention relates to the field of wires, in particular to a method for preparing a copper-magnesium 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, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C9/00C22C1/02C22F1/08C21D8/06H01B1/02H01B5/02
Inventor 燕志富孟文光李忠茂徐祥思隋长芬玄秀芹
Owner 山东维点技术有限公司
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