Continuous casting and rolling production technology suitable for high-strength spring flat steel

The invention provides a continuous casting and rolling production technology suitable for a high-strength spring flat steel. The continuous casting and rolling production technology suitable for thehigh-strength spring flat steel comprises the steps of continuous casting, continuous casting blank slow cooling, rolling, packaging and warehousing and the like, wherein the tail end of the continuous casting process adopts an electromagnetic stirring and continuous casting soft reduction technology, a soft reduction interval is 1-9 # reduction rolling, and the whole reduction amount is 5-20 millimeters. In the continuous casting blank slow cooling process, when the continuous casting blank enters a slow cooling pit, the temperature of the casting blank surface is 550-700 DEG C, the heat preservation time is 36-72 hours, and when the continuous casting blank comes out of the slow cooling pit, the temperature of the casting blank surface is less than 200 DEG C. The continuous casting and rolling production technol