The production method comprises the steps of converter blowing, LF refining and RH refining,
continuous casting,
casting blank heating, dephosphorization and
air cooling, in the
casting blank heating step, high-temperature hot charging and hot delivery are adopted, the
oxygen content of different sections is controlled through differential air-fuel ratios, the
diffusion time of the high-temperature section is prolonged, and the
oxygen content of the high-temperature section is controlled; meanwhile, in the
air cooling step, the speed difference change of an
air cooling roller way is controlled, the large-specification bearing steel
wire rod one-fire material production method is achieved, the production cost is reduced, and the production efficiency is improved; the contradictory point that
decarburization and
carbide of a fire material cannot be met at the same time is solved, the
carbide network of the
wire rod is smaller than or equal to 2.5 grade, the banded structure is smaller than or equal to 2.0 grade, the
diameter of a decarburized layer is smaller than or equal to 0.6%, and the
performance requirement of a high-quality rolling body is met.