Highly compression-resistant double-layer copper-alloy contact wire and preparation method thereof

A copper alloy and contact wire technology, applied in the field of copper alloy contact wire and its preparation, can solve the problems of pure copper melting point, low room temperature strength and high temperature strength, difficult to meet the requirements of harsh working conditions, etc., and achieve excellent physical and mechanical integration. Performance, easy control, well-distributed effects

Inactive Publication Date: 2013-11-20
DATANG LUOYANG CO GENERATION POWER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Copper has high electrical conductivity, thermal conductivity and excellent processing performance, but the melting point, room temperature strength and high temperature strength of pure copper are low, and it is difficult to meet the requirements of harsh working conditions

Method used

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  • Highly compression-resistant double-layer copper-alloy contact wire and preparation method thereof
  • Highly compression-resistant double-layer copper-alloy contact wire and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0026] The steps of a method for preparing a high-pressure-resistant double-layer copper alloy contact wire are as follows:

[0027] 1. Ni with a mass fraction of 0.2-0.5%, Si with a mass fraction of 0.1-0.5%, Mg with a mass fraction of 0.1-0.5%, Wc with a mass fraction of 0.2-0.5%, and Si with a mass fraction of 0.2-0.5% Co, Ti with a mass fraction of 0.1-0.5%, and Cr with a mass fraction of 0.1-0.3% 2 o 3 , PbO with a mass fraction of 0.1-0.3% and copper powder with a mass fraction of 96.4-98.9%. not less than 10 -3 Pa, dry nitrogen protection, made mixed powder material;

[0028] 2. Send the mixed powder material into the press, pre-press it into a billet, and hold the pressure for 20-35 minutes;

[0029] 3. Send the pre-pressed billet into the cold isostatic press for pressing at a pressure of 230-280 MPa and keep the pressure for 10-15 minutes;

[0030] 4. The billet after the static pressure in step 3 is made into a billet, sent into a vacuum sintering furnace for s...

Embodiment 1

[0034] A high compressive double-layer copper alloy contact wire, the copper alloy contact wire has a tensile strength of 450MPa, a breaking force of 48KN, and an electrical conductivity of 75% IACS. Layer and inner layer of copper alloy body, the cross-section of the copper alloy body located below the gap is fan-shaped, and there are multiple telescopic openings on the tin-plated layer. The raw material of the copper alloy body is made of Cu, Ni, Si, Mg, Wc, Co, Ti, Cr 2 o 3 and PbO, the mass fraction of each material is: Ni0.2%, Si0.1%, Mg0.1%, Wc0.2%, Co0.2%, Ti0.1%, Cr 2 o 3 0.1% and PbO0.1%, the rest is copper; Ni, Si, Mg, Wc, Co, Ti, Cr in the prepared alloy 2 o 3 and PbO uniformly distributed in the copper matrix.

[0035] The steps of a method for preparing a high-pressure-resistant double-layer copper alloy contact wire are as follows:

[0036] One, the mass fraction is 0.2% Ni, mass fraction is 0.1% Si, mass fraction is 0.1% Mg, mass fraction is 0.2% Wc, mass ...

Embodiment 2

[0043] A high-pressure-resistant double-layer copper alloy contact wire. The tensile strength of the copper alloy contact wire is 470MPa, the breaking force is 50KN, and the electrical conductivity is ≥72%IACS. It is composed of the copper alloy body in the inner layer. The cross-section of the copper alloy body located below the gap is fan-shaped, and there are multiple telescopic openings on the tin-plated layer. The raw material of the copper alloy body is Cu, Ni, Si, Mg, Wc, Co , Ti, Cr 2 o 3 and PbO, the mass fraction of each material is: Ni0.5%, Si0.5%, Mg0.5%, Wc0.5%, Co0.5%, Ti0.5%, Cr 2 o 3 0.3% and PbO0.3%, the rest is copper; Ni, Si, Mg, Wc, Co, Ti, Cr in the prepared alloy 2 o 3 and PbO uniformly distributed in the copper matrix.

[0044] The steps of a method for preparing a high-pressure-resistant double-layer copper alloy contact wire are as follows:

[0045] One, the mass fraction is 0.5% Ni, the mass fraction is 0.5% Si, the mass fraction is 0.5% Mg, the...

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Abstract

The invention discloses a highly compression-resistant double-layer copper-alloy contact wire and a preparation method thereof. The copper-alloy contact wire has the tensile strength of above 450MPa, the tensile failure force of above 48KN, and the conductivity of above 75% IACS, the two sides of the copper-alloy contact wire are provided with gaps, the copper-alloy contact wire comprises an outer tin coating layer and an inner copper alloy body, copper alloy body cross sections above or below the gaps are fan-shaped, a plurality of telescoping mouths are arranged on the tin coating layer, and copper alloy is prepared by processes of powder making, pre-compaction, billet ingot making and the like. The copper alloy contact wire has a unique structure, high conductivity can be guaranteed, at the same time, components can play effects of reducing wear and resisting abrasion, and during the use of the copper alloy contact wire, temperature difference and electric spark burn can be effectively prevented.

Description

technical field [0001] The invention relates to a copper alloy contact wire and a preparation method thereof, in particular to a copper alloy contact wire with high conductivity and high wear resistance and a preparation method thereof. Background technique [0002] With the progress and development of science and technology, high-speed, high-current electric friction materials have been widely used, such as in the field of rail transit, various switches of power transmission and transformation systems, various conductive contacts of communication systems, and industrial controllers. Various contactors, plug and unplug conductive parts, etc. This kind of friction-conductive friction material has the following characteristics: frictional contact and conductive contact coexist, service life, reliability and electrical conductivity are required to be equal, and the material is required to have the function of friction-conduction integration at the same time. [0003] Copper ha...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C9/00B22F3/12B22F3/20B60M1/13
Inventor 李东钦郑喆吴小川张永智王建涛李文峰宋跃辉周锰梁玲君刘少俊
Owner DATANG LUOYANG CO GENERATION POWER
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