Firm and resilient high-performance copper alloy wire rod and preparation method thereof

The invention discloses a firm and resilient high-performance copper alloy wire rod and a preparation method thereof. The firm and resilient high-performance copper alloy wire rod comprises a core material, a middle cladding layer and an outer cladding layer. The core material is prepared from, by weight, 23-45 parts of copper, 30-54 parts of iron, 30-55 parts of carbon, 1.5-2.4 parts of tin, 4-9 parts of chromium, 1-3 parts of manganese, 2-5 parts of molybdenum, 1.3-5.1 parts of nickel, 2.3-5.4 parts of silicon, 3-6 parts of tungsten, 3-4 parts of vanadium, 2-6 parts of phosphorus, 5-10 parts of sulphur, 8.2-10 parts of aluminum, 3-6 parts of zinc, 1.1-1.3 parts of zirconium, 1.2-4.4 parts of neodymium, and 3.3-3.5 parts of cerium. The steel core alloy wire rod is a composite wire and composed of the steel core, the middle red copper cladding layer and the outer brass cladding layer, the steel core is wrapped with a layer of red copper so as to improve the electric conductivity, and the outer brass cladding