Environment-friendly copper-based contact material for low-voltage electric appliances and processing method thereof

Abstract

The invention discloses an environment-friendly copper-based contact material for low-voltage electric appliances. The environment-friendly copper-based contact material is characterized in that the contact material is prepared from the following components in percentages by weight: 0.1% to 5% of diamond powder, 0.1% to 5% of alloy metals, 0.1% to 10% of rare earth oxides or yttrium oxide sulfide and the balance of copper, wherein the alloy metals comprise one or the combination of two or more than two of aluminum, lanthanum, cerium, yttrium, nickel, chromium, zirconium, niobium, vanadium and tungsten; and the rare earth oxides comprise one or the combination of two or more than two of rhenium oxide, lanthanum oxide, cerium oxide, yttrium oxide, samarium oxide and zirconium oxide. A low-voltage electric appliance contact prepared from the materials is high in welding resistance, wear resistance and oxidation resistance, can be safely used for a long time, and accords with clean and environment-friendly requirements for international general standard of electric appliances. Moreover, the invention also provides a processing method of the environment-friendly copper-based contact material for the low-voltage electric appliances.

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 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; and the contact material It often contains cadmium, lead, mercury, hexavalent chromium and other elements, which do not meet the clean and environmental protection requirements stipulated by the international general electrical standards