Chromium carbide copper-based contact material for low-voltage electric appliance, and processing method for chromium carbide copper-based contact material

Abstract

The invention discloses a chromium carbide copper-based contact material for low-voltage electrical appliances, which is characterized in that the composition of the contact material is: 0.1%-10% chromium carbide, 0.1%-5% alloy metal, 0.1% ~10% rare earth oxides, and the balance is copper; the alloy metal is one or two or a combination of two or more of aluminum, lanthanum, cerium, yttrium, nickel, chromium, zirconium, niobium, vanadium, and tungsten , the rare earth oxide is one or a combination of two or more of rhenium oxide, lanthanum oxide, cerium oxide, yttrium oxide, yttrium oxysulfide, samarium oxide, and zirconia. The low-voltage electrical contact made of the above materials not only has excellent welding resistance, wear resistance and oxidation resistance, but also can be used safely for a long time. In addition, the present invention also provides a chromium carbide copper-based contact for low-voltage electrical appliances The processing method of the material.

Description

technical field [0001] The invention relates to a low-voltage electric appliance contact material and a processing method thereof. Background technique [0002] At present, the contact materials of low-voltage electrical contacts on the market are mainly divided into two types: silver-based electrical contact materials with silver as the main component and copper-based electrical contact materials with copper as the main component. Silver-based electrical contact materials with silver as the main component have good electrical and thermal conductivity, low contact resistance, and strong oxidation resistance, such as silver tin oxide, silver zinc oxide, silver nickel, silver rare earth and other contacts Material. However, with the development of the national economy, the number of low-voltage electrical appliances is increasing, and the consumption of silver is increasing year by year. The shortage and high price of silver resources in my country and the world restrict the ...

AI Technical Summary

Problems solved by technology

However, with the development of the national economy, the number of low-voltage electrical appliances is increasing, and the consumption of silver is increasing year by year. The shortage and high price of silver resources in my country and the world restrict the development of silver-based low-voltage electrical contact materials.

Therefore, copper-based contact materials with copper as the main component began to be applied to the low-voltage electrical industry, but the copper-based contact materials with copper as the main component have poor welding resistance, wear resistance, and oxidation resistance. Although the problem of anti-welding can be partially solved by adding anti-welding dispersion strengthening components, such contacts are prone to wear and oxidation after long-term contact, resulting in unstable contact resistance and potential safety hazards