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Preparation of alloy mixed powder material for electric contact

A mixed powder material and mixed powder technology, applied in the field of electric contacts, can solve the problems of high cost of precious metal silver and easy oxidation of copper, and achieve good arc extinguishing performance and oxidation resistance, excellent wear resistance, and anti-welding powerful effect

Pending Publication Date: 2016-11-23
西安立伟电子科技有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Most of the existing electrical contacts use silver-based or copper-based conductor materials, but the precious metal silver is expensive, and copper is also easily oxidized

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0011] Example 1, preparing an alloy mixed powder material for electric contacts, including the following components, 80 parts of alloy mixed powder, 12 parts of diamond powder, 10 parts of boron carbide, 8 parts of vanadium carbide, 2 parts of chromium powder, 3 parts of reducing agent, 5 parts of tin oxide, 1 part of niobium powder, 3 parts of silver cadmium oxide, and 1 part of binder; 125 parts of this product are obtained after full reaction.

Embodiment 2

[0012] Example 2, preparation of alloy mixed powder material for electrical contacts, weighing 85 parts of material alloy mixed powder, 17 parts of diamond powder, 15 parts of boron carbide, 10 parts of vanadium carbide, 11 parts of chromium powder, 11 parts of reducing agent, tin oxide 11 parts, 7 parts of niobium powder, 8 parts of silver cadmium oxide, and 9 parts of binder; 184 parts of the present invention are obtained after fully reacting the above raw materials.

Embodiment 3

[0013] Example 3, preparation of alloy mixed powder material for electrical contacts, which consists of the following components in parts by weight: 83 parts of alloy mixed powder, 19 parts of diamond powder, 11 parts of boron carbide, 12 parts of vanadium carbide, 10 parts of chromium powder, reduced 11 parts of agent, 8 parts of tin oxide, 6 parts of niobium powder, 5 parts of silver cadmium oxide, and 8 parts of binder; after fully reacting the above raw materials, 173 parts of the present invention are obtained.

[0014] Compared with the prior art, the alloy mixed powder material for preparing electrical contacts of the present invention is added with diamond powder, boron carbide, vanadium carbide, chromium powder, tin oxide, etc., so that the material has strong welding resistance, arc extinguishing performance and Good oxidation resistance, electrical conductivity similar to silver-based electrical contact composite materials, excellent wear resistance, can be used as a...

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Abstract

The invention discloses an alloy mixed powder material for preparing electric contacts, comprising 80-85 parts of alloy mixed powder, 12-17 parts of diamond powder, 10-15 parts of boron carbide, 8-10 parts of vanadium carbide, and 2-11 parts of chromium powder , 3-11 parts of reducing agent, 5-11 parts of tin oxide, 1-7 parts of niobium powder, 3-8 parts of silver cadmium oxide, and 1-9 parts of binder. The alloy mixed powder material for preparing electrical contacts of the present invention is added with diamond powder, boron carbide, vanadium carbide, chromium powder, tin oxide, etc., so that the material has strong welding resistance, good arc extinguishing performance and oxidation resistance, and good electrical conductivity. Similar to silver-based electrical contact composite materials, it has superior wear resistance and can be used as a cheap substitute for silver alloy electrical contacts used in low-voltage switches, and can be widely used in various levels of high-voltage and low-voltage electrical appliances and vacuum switches.

Description

technical field [0001] The invention belongs to the field of electrical contacts, in particular to an alloy mixed powder material for preparing electrical contacts. Background technique [0002] As the core component of medium and high voltage switchgear, electrical contacts play the role of breaking and conducting, and are widely used in various high-voltage load switches, SF6 circuit breakers, on-load tap-changers, large breaking capacity isolating switches and grounding switch. Electrical contacts are mainly divided into rivet type electrical contacts, powder metallurgy contacts, sheet contacts and so on. Electric contacts are important components of high-voltage circuit breakers, switch cabinets, disconnectors, and grounding switches, and their performance directly affects the quality and service life of these high-voltage electrical appliances. Most of the existing electrical contacts use silver-based or copper-based conductor materials, but the precious metal silver ...

Claims

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Application Information

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IPC IPC(8): H01H1/021
Inventor 李超
Owner 西安立伟电子科技有限责任公司
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