Preparation method and application of copper-iron alloy cored wire rod

The invention discloses a preparation method and application of a copper-iron alloy cored wire rod, and the preparation method comprises the following steps: S1, material preparation: selecting a core layer material and an outer layer material, the core layer material being a mixed powder material, and the outer layer material being a copper strip; s2, mixing: crushing the copper-iron alloy cast ingot, the copper-magnesium alloy cast ingot and the microalloy cast ingot, and uniformly mixing by using mixing equipment to obtain a core layer material; and S3, coating is conducted, specifically, the core layer material is coated with the outer layer, the copper-iron alloy core-spun wire rod is obtained after coating is completed, when the core-spun wire rod is used for adding alloy elements into alloy liquid, the core-spun wire rod can be directly fed into the alloy liquid through wire feeding equipment, the alloy elements can be evenly distributed in the alloy liquid, and therefore the copper-iron alloy core-spu