Patent ID: 8899304

Claim:
A crystallizer for continuous casting of a metal product, the crystallizer comprising a monolithic tubular structure defined by lateral walls, the lateral walls including channels in the thicknesses of the lateral walls for circulation of a cooling liquid, wherein two adjacent lateral walls define a corner or an edge, at least one longitudinal portion which defines a zone in which, during use, a meniscus of a liquid metal is located, at least one of said lateral walls is provided with a reduction in thickness, starting from the external surface, said reduction in thickness having a cross section with a reduced area with respect to remaining longitudinal portions of the monolithic tubular structure, said reduction in thickness is such that a residual thickness of a cold part of the at least one of said lateral walls is less than the diameter of the channels, wherein the residual thickness is external to an external edge of the channels with respect to the liquid metal, and a thickness of the at least one of said lateral walls between an internal edge of the channels and the liquid metal is greater than the residual thickness of said cold part of the one of said lateral walls.