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Novel gold-based composite electrical brush material and preparation method thereof

A brush and gold-based technology, which is applied in the field of new gold-based composite brush materials and their preparation, can solve the problems of reducing comprehensive performance, high resource demand, and increasing pollution costs.

Inactive Publication Date: 2016-09-07
SINO PLATINUM METALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, if the gold content is too high, the demand for resources will be high and the cost of pollution will increase. Therefore, it is a good choice to reduce the content of precious metals without reducing the overall performance.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Example 1 The mass fraction of Ag content in the cladding material of the composite material of the present invention is about 20%, the mass fraction of Cu content is about 10%, Au is the balance, and the mass fraction of Cu content in the core material is 85%, Ni The mass fraction of the Sn content is 9%, and the mass fraction of the Sn content is 6%. The gold-based alloy and the copper-based alloy are smelted separately under the protection of Ar gas, and cast in a graphite mold. The processing deformation of the ingot section shrinkage rate is guaranteed to be 30% by forging. The middle of the gold-based alloy ingot is punched and annealed at 700 ° C 1 hour, and drawn into a thin tube with an outer diameter of Φ6mm and a wall thickness of 1mm. The copper-based alloy was annealed at 800°C for 1 hour and then directly drawn to Φ4mm. The two alloys were ultrasonically cleaned in alcohol, and then the gold alloy tube sleeve On the outer layer of the copper alloy rod, it ...

Embodiment 2

[0025] Example 2 The mass fraction of Ag in the cladding material of the composite material of the present invention is about 35%, the mass fraction of Cu is about 5%, Au is the balance, and the core material is the same as in Example 1. The gold-based alloy and the copper-based alloy are smelted separately under the protection of Ar gas, and cast in graphite molds. The processing deformation of the ingot section shrinkage rate is guaranteed to be 35% by forging. The center of the gold-based alloy ingot is punched and annealed at 700 ° C 1 hour, and drawn into a thin tube with an outer diameter of Φ6mm and a wall thickness of 1mm. The copper-based alloy was annealed at 800°C for 1 hour and then directly drawn to Φ4mm. The two alloys were ultrasonically cleaned in alcohol, and then the gold alloy tube sleeve On the outer layer of the copper alloy rod, it is annealed at 700°C for 2 hours; it is forged by precision swaging, the deformation is controlled at about 25%, and then draw...

Embodiment 3

[0026] Example 3 The mass fraction of Ag in the cladding material of the composite material of the present invention is about 5%, the mass fraction of Cu is about 35%, Au is the balance, and the core material is the same as in Example 1. The gold-based alloy and the copper-based alloy are smelted separately under the protection of Ar gas, and cast in graphite molds. The processing deformation of the ingot section shrinkage rate is guaranteed to be 25% by forging. The center of the gold-based alloy ingot is perforated and annealed at 700 ° C. 1 hour, and drawn into a thin tube with an outer diameter of Φ6mm and a wall thickness of 1mm. The copper-based alloy was annealed at 800°C for 1 hour and then directly drawn to Φ4mm. The two alloys were ultrasonically cleaned in alcohol, and then the gold alloy tube sleeve On the outer layer of the copper alloy rod, it is annealed at 700°C for 2 hours; it is forged by precision swaging, the deformation is controlled at about 25%, and then ...

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Abstract

The invention discloses a novel gold-based composite electrical brush material and a preparation method thereof. The novel gold-based composite electrical brush material is characterized in that a coating layer is gold alloy; a core part is copper alloy; the coating layer of the electrical brush material adopts gold as a matrix and contains a certain mass friction of Cu and Ag; a base layer adopts copper as a matrix; a coating layer material contains alloy with Au and Cu elements; AuCu ordered phases generated from ordering of Au-Cu exert an ageing strengthening function; and the added Ag elements can exert a solid solution strengthening function. According to the novel gold-based composite electrical brush material, a copper alloy core part material is liable to precipitate (CuNi)3Sn phases during the ageing process, the strength of the alloy is improved, and the alloy is strengthened through spinodal decomposition; and composite electrical brush materials with different hardness and different coating layer thicknesses can be obtained through controlling the processing deformation amount, an intermediate annealing technology and an ageing technology, and the highest performances can reach as follows: the hardness HV is larger than or equal to 240 Hv, the coating layer thickness is smaller than or equal to 0.07 mm, and the outer diameter is 0.5 mm.

Description

technical field [0001] The invention relates to high-performance electrical contact materials (especially sliding electrical contact materials, such as electric brushes) and some materials requiring high strength, high elasticity, low cost, and excellent comprehensive performance and their preparation, especially composite electrical contact materials made of gold alloys The preparation technology and performance of the gold alloy / copper alloy composite electrical contact material with good elasticity as the coating layer and the copper alloy as the core. Background technique [0002] Human society is currently facing a series of severe challenges, among which the energy crisis is one of the most concerned focuses in the world today. With the severe situation of globalized energy depletion, supply shortage, and climate change, countries all over the world have realized the importance of developing renewable energy and attached great importance to the wind power industry. The...

Claims

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Application Information

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IPC IPC(8): C22C5/02C22C9/06C22F1/14C22F1/08H01R39/20H01R43/12
CPCC22C5/02C22C9/06C22F1/08C22F1/14H01R39/20H01R43/12
Inventor 武海军卢绍平杨涛李强巫小飞尹俊美陈家林陈登权万吉高赵永坤杨丽娟
Owner SINO PLATINUM METALS CO LTD
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