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

A technology of copper alloy and contact wire, which is applied in the field of copper alloy contact wire and its preparation, can solve the problems of difficult to meet the requirements of harsh working conditions, the melting point of pure copper, low room temperature strength and high temperature strength, and achieve excellent physical and mechanical integration Performance, fine grain size, wear-reducing effect

Inactive Publication Date: 2015-03-25
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

[0025] The steps of a method for preparing a high-pressure double-layer copper alloy contact wire are as follows:

[0026] 1. Combine 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 a mass fraction of 0.2-0.5% Co, Ti with a mass fraction of 0.1-0.5%, 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%, after being prepared in proportion, put them into the stainless steel grinding tank of a high-energy ball mill, mix and grind for 5-25h, vacuum operation, vacuum degree Not less than 10 -3 Pa, dry nitrogen protection, prepared mixed powder material;

[0027] 2. Feed the mixed powder material into the press and pre-compress it into a blank. The pressure holding time is 20-35min;

[0028] 3. Send the pre-compressed blank into a cold isostatic press for compression, the pressure is 230-280MPa, and the pres...

Embodiment 1

[0033] A high-pressure double-layer copper alloy contact wire. The copper alloy contact wire has a tensile strength of 450MPa, a breaking force of 48KN, and a conductivity of 75% IACS. There are notches on both sides, and the outer layer is tinned. The copper alloy body of the layer and the inner layer is composed of copper alloy body. The cross section of the copper alloy body under the gap is fan-shaped. There are multiple expansion ports on the tin-plated layer. The raw materials of the copper alloy body are Cu, Ni, Si, Mg, Wc, Co, Ti, Cr 2 O 3 And PbO composition, 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 are evenly distributed in the copper matrix.

[0034] The steps of a method for preparing a high-pressure double-layer copper alloy contact wire are as follows:

[0035] 1. Combine Ni with a mass fraction of 0.2%, Si with a ...

Embodiment 2

[0042] A high-pressure double-layer copper alloy contact wire. The copper alloy contact wire has a tensile strength of 470MPa, a breaking force of 50KN, and an electrical conductivity of ≥72% IACS. There are gaps on both sides, and the outer layer of tinned layer It is composed of the copper alloy body of the inner layer. The cross section of the copper alloy body under the notch is fan-shaped. There are multiple expansion ports on the tin-plated layer. The raw materials of the copper alloy body are Cu, Ni, Si, Mg, Wc, Co. , Ti, Cr 2 O 3 And PbO composition, 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 are evenly distributed in the copper matrix.

[0043] The steps of a method for preparing a high-pressure double-layer copper alloy contact wire are as follows:

[0044] 1. Combine the mass fraction of Ni with 0.5%, Si with 0.5%, Mg w...

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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 Patents(China)
IPC IPC(8): C22C9/00B22F3/12B22F3/20B60M1/13
Inventor 李东钦许涛郑喆张永智吴小川王建涛李文峰段双海宋跃辉周锰梁玲君刘少俊
Owner DATANG LUOYANG CO GENERATION POWER
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