Abstract: Dieless rolling technique is quite important for the forming of large complex disk parts such as high temperature alloy or titanium alloy turbine disc and has special advantages in double performance turbine disc forming. The results show that only Russia and the United States GE have mastered the technology and equipment of dieless rolling forming at present, and China is still in the preliminary stage; The stiffness and strength of existing equipment cannot satisfy the requirements of high-temperature alloy turbine disc forming and there are still some problems in frame structure, heating system, forming process and simulation, and it is still crucially necessary to develop a novel second-generation equipment; Based on the previous findings on the heating system of resistance furnace, design of rolling head, technology calculation software and process system, the transformation and upgrading of the traditional rolling ring machine is the best way to realize the industrialization of dieless rolling technology.

Key words: dieless rolling, dual performance turbine disk, superalloy, rolling ring machine