Continuous casting apparatus and corresponding method

Continuous casting method that provides to make available a plurality of compression units (11), each defined by a lower roll (12) and an upper roll (13) between which there is a passage gap (14) for a metal product (P) to be cast, to dispose said compression units (11) so that the passage gaps (14) are aligned along a casting axis (Z) with an at least partly curved development, and to exert during casting compression actions on the metal product (P) by means of said compression units (11), wherein during casting it also provides to straighten said cast metal product (P) to define a variation in the radius of curvature of said casting axis (Z), said straightening being performed by a plurality of straightening rolls (15) disposed only on the extrados side of said casting axis (Z) and each of them interposed between at least two of said lower rolls (12) positioned on said extrados side, and in that said straightening rolls (15) define, along said casting axis (Z), respective curved segments (T1, T2, T3) having different radii of curvature (R1, R2, R3), each curved segment (T1, T2, T3) being comprised between two successive straightening rolls (15).