High-strength steel wire and preparation method thereof

The invention discloses a high-strength steel wire and a preparation method thereof, and particularly relates to the technical field of steel wire preparation, and the high-strength steel wire specifically comprises the following components in parts by weight: 5-15 parts of pig iron, 8-12 parts of steel, 8-15 parts of carbon, 6-10 parts of copper, 0.5-2 parts of manganese, 0.1-0.5 part of phosphorus, 0.5-1.5 parts of nickel, 2-8 parts of aluminum, 0.7-1.5 parts of silicon and 0.7-2 parts of titanium. The preparation components of the steel wire are added and improved, so that the strength and hardness of the steel wire after production can be improved, the properties of the steel wire in different application environments are ensured, and meanwhile, in combination with the preparation mode, the drawing parameters and the heat treatment mode of the steel wire rod are improved, so that the production efficiency is improved. The phenomena that the steel wire needs to be broken and is insufficient in hardness in