The invention discloses a high-strength
strip steel straightening, flattening and straightening process. The high-strength
strip steel straightening, flattening and straightening process is characterized in that a hot rolling high-strength steel plate or
strip steel sequentially passes through an inlet straightening
machine, a temper mill and an outlet straightening
machine, and by means of the combined working procedures of straightening, flattening and straightening, the adjustment of the plate shape, the surface quality, the mechanical performance and the
residual stress of the strip steelis completed; the inlet straightening
machine is used for conducting rough straightening on the strip steel, on the one hand, the plate shape of the supplied material is improved, and on the other hand, the scale on the surface of the strip steel is reduced; the temper mill is used for conducting flattening on the strip steel, the plate shape of the strip steel is improved, the mechanical performance of the strip steel is adjusted, and the surface quality of the strip steel is improved; and the outlet straightening machine is used for conducting precise straightening on the strip steel, the unquenched plate shape problems and newly-generated plate shape problems in the flattening process are solved, and the unquenched
residual stress and newly-generated
residual stress in the flattening process are eliminated.