In the frame of the SOTAMA'2007 program, a KOBO technology will be demonstrated. The KOBO experimental set-up is located in the Faculty of Non-Ferrous Metals adjacent to the conference and exhibition place.
Many years studies on the phenomena of plastic flow and accompanying structural effects, proved that it is practically possible to highly limit the strain hardening of deformed metals as well as to control the final structure and properties of the products. They led to a new forming technology, called the KOBO method, which can be used during extrusion, forging, rolling or drawing (Fig. 1), and allows to the high efficient, low energy consuming deformation and formation of ultrafine grained structure.
The KOBO method consists in external induction in the metal of intensively localized plastic flow in the shear bands by the changes of the strain path as a result of the additional, cyclic reversible rotation of the shaping tools (changes of the loading scheme).