Hot rolling method for reducing low-carbon steel wire rod mixed crystal structures for cold upsetting

The invention provides a hot rolling method for reducing low-carbon steel wire rod mixed crystal structures for cold upsetting. The hot rolling method for reducing low-carbon steel wire rod mixed crystal structures for cold upsetting comprises the following steps: step A, controlling the heating temperature of a billet, controlling the temperature of a soaking zone at 1050-1090 DEG C, controllingthe temperature of a heating section 2 at 1080-1120 DEG C, and controlling the temperature of a heating section 1 at 880-920 DEG C; step B, controlling inlet finishing temperature at 840-880 DEG C; step C, controlling the finishing rolling temperature of an outlet finishing machine at 990-1020 DEG C; and step D, controlling laying temperature at 830-870 DEG C. The low-carbon steel wire rod mixed crystal structures for cold upsetting can be controlled effectively, the drawing performance and the cold upsetting performance of cold upsetting steel wire rods are improved remarkably, and the hot rolling method is suitable