Method for producing HRB500E twisted steel bar through high-speed bar and HRB500E twisted steel bar produced through high-speed bar

The invention provides a method for producing a HRB500E twisted steel bar through a high-speed bar and the HRB500E twisted steel bar produced through the high-speed bar. The method for producing the HRB500E twisted steel bar through the high-speed bar comprises the sequential steps of molten iron smelting with a blast furnace, molten iron desulfurization pretreatment, molten steel smelting with a converter, argon blowing, LF refining, square billet continuous casting, heating with a heating furnace, rough rolling, intermediate rolling, pre-finish rolling, pre-finish rolling controlled cooling and recovery, finish rolling, and controlled cooling and recovery after rolling. The HRB500E twisted steel bar produced through the high-speed bar comprises the following components in percentage by weight: 0.21 to 0.25 Wt% of C, 0.65 to 0.80 Wt% of Si, 1.2 to 1.35 Wt% of Mn, less than or equal to 0.04 Wt% of P, less than or equal to 0.035 Wt% of S, 0.03 to 0.06 Wt% of V, 0.008 to 0.02 Wt% of Nb, 0.007 to 0.017 Wt% of N,