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High-strength and high-conductivity copper magnesium alloy contact wire and preparing method thereof

A copper-magnesium alloy and contact wire technology, applied in the field of copper alloy materials, can solve the problem that the electrical conductivity and tensile strength of copper-magnesium alloy cannot be taken into account at the same time, so as to improve the machinability, strength and conductivity, and elongation. Effect

Inactive Publication Date: 2017-05-17
HENAN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In order to overcome the technical problem that the conductivity and tensile strength of copper-magnesium alloys in the prior art cannot be taken into account at the same time, the present invention provides a high-strength and high-conductivity copper-magnesium alloy contact wire with excellent comprehensive performance and its preparation method to meet the needs of railways. Performance requirements of copper alloys for contact wires

Method used

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preparation example Construction

[0021] A high-strength and high-conductivity copper-magnesium alloy contact wire and a preparation method thereof, comprising the following steps:

[0022] (1) Preparation of master alloy: put copper and magnesium with 30% of the total mass of copper in the vacuum non-consumable electrode arc melting furnace for melting, and vacuumize until the pressure in the furnace is 5×10 -2 Pa, then filled with argon until the pressure in the furnace is 0.05MPa, heated to 1050~1100°C, smelted for 0.5~1h, cooled naturally to obtain a copper-magnesium master alloy for later use;

[0023] (2) Smelting: put copper, nickel, zinc, silver with 70% of the total mass of copper and the copper-magnesium master alloy prepared in step (1) into a high-frequency vacuum melting furnace for melting, and vacuumize to the pressure in the furnace 5×10 -2 Pa, then fill the furnace with argon until the pressure in the furnace is 0.05MPa, and control the melting temperature to 1230-1280°C to obtain a liquid al...

Embodiment 1

[0030] A high-strength and high-conductivity copper-magnesium alloy contact wire and its preparation method are composed of the following components in weight percentage: 0.2% magnesium, 0.1% nickel, 0.1% zinc, 0.1% silver, and the balance is copper and Avoid impurity elements.

[0031] The specific preparation method is:

[0032] (1) Preparation of master alloy: put copper and magnesium with 30% of the total mass of copper in the vacuum non-consumable electrode arc melting furnace for melting, and vacuumize until the pressure in the furnace is 5×10 -2 Pa, then filled with argon until the pressure in the furnace is 0.05MPa, heated to 1050°C, smelted for 1h, and cooled naturally to obtain a copper-magnesium master alloy for later use;

[0033] (2) Smelting: put copper, nickel, zinc, silver with 70% of the total mass of copper and the copper-magnesium master alloy prepared in step (1) into a high-frequency vacuum melting furnace for melting, and vacuumize to the pressure in the...

Embodiment 2

[0040] A high-strength and high-conductivity copper-magnesium alloy contact wire and its preparation method are composed of the following components in weight percentage: 0.2% magnesium, 0.2% nickel, 0.2% zinc, 0.2% silver, and the balance is copper and not Avoid impurity elements.

[0041] The specific preparation method is:

[0042] (1) Preparation of master alloy: put copper and magnesium with 30% of the total mass of copper in the vacuum non-consumable electrode arc melting furnace for melting, and evacuate until the pressure in the furnace is 5×10 -2 Pa, then filled with argon until the pressure in the furnace is 0.05MPa, heated to 1050°C, smelted for 1h, and cooled naturally to obtain a copper-magnesium master alloy for later use;

[0043] (2) Smelting: put copper, nickel, zinc, silver with 70% of the total mass of copper and the copper-magnesium master alloy prepared in step (1) into a high-frequency vacuum melting furnace for melting, and vacuumize to the pressure in th...

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Abstract

The invention provides a high-strength and high-conductivity copper magnesium alloy contact wire. The contact wire comprises the following components of, by weight, 0.1%-0.8% of magnesium, 0.1%-0.4% of nickel, 0.1%-0.4% of zinc, 0.1%-0.4% of silver, and the balance copper and inevitable impurity elements. The prepared high-strength and high-conductivity copper magnesium alloy contact wire has excellent comprehensive performance, solves the technical problem that in the prior art, consideration cannot be given to electric conductivity and tensile strength of a copper magnesium alloy at the same time, and can meet the requirement for the performance of the copper alloy for railway contact wires.

Description

technical field [0001] The invention relates to a high-strength and high-conductivity copper-magnesium alloy contact wire and a preparation method thereof, belonging to the technical field of copper alloy materials. Background technique [0002] At present, my country is the country with the largest number of high-speed railways in operation, the highest operating speed, and the largest scale of high-speed railways under construction in the world. High-speed railways play an important role in social and economic development. Therefore, the performance requirements for electrified railway catenary wire are also higher. As the key equipment that directly transmits current to the electric locomotive through sliding friction with the pantograph slide on the electric locomotive, the performance of the catenary directly affects the current quality of the electric locomotive and the quality of the locomotive. safe operation. At present, the mainly developed railway contact wire ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C9/06C22C9/04C22C9/00C22C1/03C22F1/08C22F1/02
CPCC22C1/03C22C9/00C22C9/04C22C9/06C22F1/002C22F1/02C22F1/08
Inventor 张毅李丽华国秀花刘玉亮李武会王冰洁殷婷孙国强田保红刘勇宋克兴孙慧丽柴哲任凤章贾淑果
Owner HENAN UNIV OF SCI & TECH
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