This paper includes a simple overvi

This paper includes a simple overview of the possibilities for producing large rings and influences of this technology on hydraulic press. This production is currently often under discussion. These rings are mostly used in areas of the nuclear industry, especially in reactor vessels. In this paper are considered several options for large ring production. Chosen are only those which are suitable for real production. The Research Centre of Forming Machines at the University of West Bohemia in Pilsen deals with this problem. Currently basic calculation and design work is being carried out. In the future is this topic going to be more precisely described in terms of technological process. First step, which is going to be done is comparing of real and virtual simulation. The technological comparison clearly shows the advantages of rolling in this case. It is better from energetic point of view. The main danger here is the possibility of ring deformation during forging because rings will be thin and also strength problems caused by core holes.