INFLUENCE OF THE THERMO-MECHANICAL PROCESSES ON THE FORMATION OF THICK CYLINDRICAL COMPONENTS FORMED BY DIFFERENT TECHNOLOGIES: HOT ROLLING, COLD BENDING, FORGING.

Abstract

The production of thick cylinders in steels covers a significant role for the production of pressure vessels and
other components applied in energy and chemical applications. The thermo-mechanical process performed
on the products strongly affects the final properties, because the induced crystallographic textures are very
different. In the case of hot rolled and forging the forming operation takes place at high temperature but the
induced deformation pattern is very different. In the three points cold bending operation the cold deformation
is associated with annealing processes which produce other crystallographic patterns and the related
mechanical anisotropy. In this study a critical evaluation of the features and properties of the final products
obtained through these different technological routes has been realized.