Preparation of copper-based metal compound material components for electrical contacts

Abstract

The invention discloses a copper-based metal compound material component for preparing electric contacts, including 10-31 parts of copper powder, 12-33 parts of tungsten carbide powder, 5-12 parts of zinc, 2-14 parts of metal oxide, and 3 parts of tantalum carbide. ~12 parts, 3~11 parts of tin oxide, 7~10 parts of niobium powder, 3~11 parts of silver cadmium oxide, 7~11 parts of binder, 2~10 parts of aluminum powder, 2~8 parts of lanthanum oxide, titanium powder 1 to 9 parts, 1 to 7 parts of nano-diamond, 1 to 9 parts of cermet, 2 to 7 parts of phosphorus, and 1 to 5 parts of aluminum-silicon intermetallic compound. In the copper-based metal compound material component for preparing electrical contacts of the present invention, tungsten carbide powder, zinc powder, metal oxide, cermet, etc. are added to the material to prevent copper from being oxidized, so that the material has strong welding resistance and arc extinguishing Good performance and oxidation resistance. Moreover, its electrical conductivity is similar to that of silver-based electrical contact composite materials, and its wear resistance is superior, so it can be used as a cheap substitute for silver alloy electrical contacts used in low-voltage switches, saving costs.

Description

technical field [0001] The invention belongs to the field of electrical contacts, in particular to a copper-based metal compound material component 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 prec...

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