Copper-chromium-titanium alloy contact wire and preparation method thereof

The invention discloses a copper-chromium-titanium alloy contact wire and a preparation method thereof. The copper-chromium-titanium alloy contact wire is prepared from a copper alloy through the processes of atmospheric smelting, upward continuous casting, continuous extrusion, heat treatment, rolling and drawing and the like, wherein the copper alloy contains Cu, 0.15-0.35% of Cr, 0.10-0.23% of Ti, 0-0.05% of Mg and 0-0.02% of Si, and the total amount of impurities of the copper alloy is not more than 0.1%. Under the conditions that the process is simplified and equipment and alloy components are relatively simple, large-scale industrialized production can be realized, and the contact wire has relatively high tensile strength, excellent electric conductivity and softening resistance and good electrical sliding wear performance.