Continuous casting method of sulfur-containing easy-cutting pinion steel

The invention discloses a continuous casting method of a sulfur-containing easy-cutting pinion steel, belonging to the technical field of ferrous metallurgy and solving the problems of low pulling rate and output influence when qualified sulfur-containing easy-cutting pinion steel is produced in the prior art. The continuous casting method of the sulfur-containing easy-cutting pinion steel comprises the following steps of: a, injecting molten steel with the superheat degree of 15-30 DEG C into a crystallizer of a continuous casting machine charged with covering slag for cooling so as to obtain a continuous casting billet, and controlling the using amount of cooling water and the intensity of electromagnetic stirring; and b, pulling the continuous casting billet out of the crystallizer obtained from the step a, sequentially cooling through a secondary cooling zone and an air cooling zone, wherein the pulling rate is 1.3-1.8 m/minute, and the surface temperature of the continuous casting billet is controlled at 1000-1150 DEG C in the secondary cooling zone and controlled at 900-1050 DEG C when entering the air cooling zone. The continuous casting method disclosed by the invention ismainly used for the continuous casting of pinion steel with the section of 200*200 mm.