Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Copper-based contact material for low-voltage apparatus

A technology for contact materials and low-voltage electrical appliances, applied in the direction of metal/alloy conductors, etc., can solve the problems that the anti-oxidation performance cannot meet the working life of low-voltage electrical appliances, the high cost of copper-based contact materials, and the increased contact resistance of contacts, etc., to achieve excellent Antioxidant performance, excellent antioxidation performance, stable contact resistance effect

Inactive Publication Date: 2012-01-04
FUDA ALLOY MATERIALS
View PDF23 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] However, the main disadvantage of copper as an electrical contact material is its poor oxidation resistance. Once an oxide film is formed on the surface of the copper contact, the contact resistance of the contact will increase, causing the temperature rise of the electrical appliance to be too high, and even the electrical appliance will fail.
Although rare earth elements are added in the prior art to improve the anti-oxidation performance, its anti-oxidation performance still cannot meet the requirements of the working life of low-voltage electrical appliances, and the rare earth elements themselves are also scarce resources, and the price is getting higher and higher, making copper-based contact materials high cost

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Copper-based contact material for low-voltage apparatus
  • Copper-based contact material for low-voltage apparatus
  • Copper-based contact material for low-voltage apparatus

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] The composition and mass percentage of the copper alloy material: graphite 1%, boron 0.5%, the balance is CuNi alloy powder, wherein the Ni content is 3%, and the balance is copper. Its performance indicators: resistivity 4.5μΩ cm, density 8.66g / cm 3 , hardness HB93.

Embodiment 2

[0027] The composition and mass percentage of the copper alloy material: graphite 0.5%, boron 1%, the balance is CuNiLa alloy powder, the Ni content in the CuNiLa alloy is 2%, and the La content is 1%. Its performance indicators: resistivity 3.8μΩ cm, density 8.63g / cm 3 , hardness HB95.

Embodiment 3

[0029] The composition and mass percentage of the copper alloy material: graphite 1%, the balance is CuLa alloy powder, and the La content in the CuLa alloy is 1%. Its performance index: resistivity 2.25μΩ·cm, density 8.64g / cm 3 , hardness HB83.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
electrical resistivityaaaaaaaaaa
densityaaaaaaaaaa
electrical resistivityaaaaaaaaaa
Login to View More

Abstract

The invention discloses a copper-based contact material for a low-voltage apparatus. The copper-based contact material comprises the following components in percentage by mass: 0.01-3 percent of graphite, 0.01-5 percent of boron and the balance of copper alloy. The copper-based contact material has the characteristics of high electric conductivity, heat conductivity, arc burning resistance, welding resistance, excellent anti-oxidant performance, low and stable contact resistance and the like, substitutes a silver alloy contact for the low-voltage apparatus so as to reduce the cost, and meets the European requirement for restriction of the use of certain hazardous substances (ROHS).

Description

technical field [0001] The invention belongs to the technical field of electrical contact materials, and specifically refers to a copper-based contact material for low-voltage electrical appliances. Background technique [0002] Contact materials are the key materials of various switches, relays, contactors and other electrical appliances, which play the role of connecting, breaking and transmitting current. At present, silver-based materials are widely used in electrical contact materials at home and abroad. Silver is a precious metal, which makes the cost of silver in industrial production quite high, and my country is a country with relatively poor silver reserves. Therefore, it is an inevitable trend to find new materials that can replace silver, especially Especially as a contact material industry that uses a large amount of silver, it is of far-reaching significance to find new materials to replace silver. [0003] For many years, many scientific and technological work...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): H01B1/02
Inventor 谢继峰柏小平翁桅林万焕刘立强颜小芳
Owner FUDA ALLOY MATERIALS
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com