Method for improving C warping of cooled hot-rolled strip steel layer

The invention discloses a method for improving C warping after a hot rolled strip steel layer is cooled. The method comprises the following steps that S1, a C warping steel type identification table is formulated; s2, after the process control system receives the information issued by the production and manufacturing system, the process control system checks the information to determine whether an anti-C-warping control process needs to be carried out or not, if yes, the step S3 is executed, and if not, the step S3 is executed; s3, determining the density of laminar cooling water; s4, determining an opening priority sequence of upper and lower laminar cooling headers of the pre-calculated laminar cooling water; s5, determining a priority sequence of opening or reducing the upper and lower laminar flow cooling headers under feed-forward control; s6, determining a priority sequence of increasing or decreasing opening of the upper and lower laminar cooling headers under feedback control; and S7, opening the arra