Preparation of Alloy Mixed Powders for Electrical Contacts

A technology of mixing powder and electric contacts, which is 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: 2016-11-02
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

[0012] Example 1, preparing alloy mixed powder for electrical contacts, select the following components according to the weight of the material, 18 parts of titanium chromium, 17 parts of alloy mixed powder, 4 parts of germanium dioxide, 4 parts of zinc, and 2 parts of boron carbide , 4 parts of lanthanum, 2 parts of silver cadmium oxide, 2 parts of metal oxide, 4 parts of tin oxide, 2 parts of titanium powder, 59 parts of the present invention are obtained after sufficient preparation and processing.

Embodiment 2

[0013] Example 2, preparation of alloy mixed powder for electrical contacts, which consists of the following components in parts by weight: 25 parts of titanium chromide, 34 parts of alloy mixed powder, 13 parts of germanium dioxide, 11 parts of zinc, 11 parts of boron carbide, lanthanum 10 parts, 11 parts of silver cadmium oxide, 9 parts of metal oxide, 9 parts of tin oxide, 9 parts of titanium powder, after mixing evenly, 142 parts of this product can be obtained.

Embodiment 3

[0014] Example 3, preparing alloy mixed powder for electrical contacts, weighing the following components in the formula, 24 parts of titanium chromide, 21 parts of alloy mixed powder, 8 parts of germanium dioxide, 6 parts of zinc, 3 parts of boron carbide, lanthanum 1 part, 1 part of silver cadmium oxide, 4 parts of metal oxide, 5 parts of tin oxide, 2 parts of titanium powder, 76 parts of the present invention were obtained after sufficient preparation and processing.

[0015] Compared with the prior art, the alloy mixed powder for preparing electrical contacts of the present invention is added with titanium chromium, alloy mixed powder, rare earth, etc., so that the material has strong welding resistance, good arc extinguishing performance and oxidation resistance, and is conductive The performance is similar to silver-based electrical contact composite materials, and the wear resistance is superior. It can be used as a cheap substitute for silver alloy electrical contacts u...

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PUM

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Abstract

The invention discloses alloy mixed powder for preparing electric contacts, which comprises 18-25 parts of titanium chromium, 17-34 parts of alloy mixed powder, 4-13 parts of germanium dioxide, 4-11 parts of zinc, and 2-11 parts of boron carbide , 4-10 parts of lanthanum, 2-11 parts of silver cadmium oxide, 2-9 parts of metal oxide, 4-9 parts of tin oxide, 2-9 parts of titanium powder. The alloy mixed powder for preparing electrical contacts of the present invention is added with titanium chromide, alloy mixed powder, rare earth, etc., so that the material has strong welding resistance, good arc extinguishing performance and oxidation resistance, and the electrical conductivity is comparable to that of silver-based electrical contacts. Composite materials are similar and have superior wear resistance, which can be used as an inexpensive substitute for silver alloy electrical contacts used in low-voltage switches.

Description

technical field [0001] The invention belongs to the field of electrical contacts, in particular to alloy mixed powder 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 is expensive...

Claims

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Application Information

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IPC IPC(8): H01H1/021B22F1/00C22C30/00C22C32/00
Inventor 李超
Owner 西安立伟电子科技有限责任公司
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