Pickling rolling production method of cold-rolled ultrahigh-strength QP steel

The invention belongs to the technical field of cold-rolled ultrahigh-strength steel production, and particularly relates to cold-rolled ultrahigh-strength Qamp. The invention discloses an acid rolling production method of P steel. The production method comprises the steps of hot-rolled coil cover type annealing softening, hot-rolled finishing rewinding and acid rolling production. The pickling rolling production difficulty is reduced, the yield strength of a hot rolled coil can be reduced by 150-350 MPa, the tensile strength can be reduced by 200-450 MPa, the ductility can be increased by 9-28%, and a common cold rolling production line can produce ultrahigh-strength Qamp; in addition, the cold-rolled ultrahigh-strength Qamp obtained by the preparation method disclosed by the invention is ultrahigh in strength; the performance of the P steel acid rolled coil completely meets the requirements after subsequent annealing or galvanization treatment. 本发明属于冷轧超高强钢生产技术领域，具体涉及一种冷轧超高强Q&P钢的酸轧生产方法。该生产方法流程包括：热轧卷罩式退火软化，热轧