Cast-rolled plate shape control device and method

The invention belongs to the technical field of aluminum foil production and manufacturing, and discloses a cast-rolled plate shape control device which comprises a roller, a deflector roller and a spraying device, the spraying device is arranged between the roller and the deflector roller, and the spraying device is used for spraying liquid nitrogen; the cast-rolled plate shape control device further comprises a plate thickness and plate shape monitoring device, and the plate thickness and plate shape monitoring device comprises a thickness measuring unit, a data transmission unit and a dataprocessing PC which are connected in sequence. The thickness measuring unit is located behind the deflector roller and used for detecting the thicknesses of different transverse points of a cast-rolled plate and uploading data to the data processing PC, and the PC draws a plate shape curve according to the data. Compared with the prior art, the device has the following advantages that 1, the asymmetrical plate shape of a