Abstract: Based on the development of computer simulation technology, the development of virtual rolling technology at home and abroad since 1990s is summarized. The integral frame system of virtual rolling is analyzed, and the limitations of present virtual rolling simulation research are pointed out. Virtual rolling technology, which is a large-scale software and hardware integration simulation system, can research the static and dynamic characteristics of the rolling mill by using numerical analysis method. It describes roll mill system in the form of a mathematic model, and makes up a large-scale system according to information regulation, and confirms some uncertain flexible parameters and non-linear cells by means of system identification method. Based on the advanced modeling, multi-field simulation, information management, interactive user interface and virtual reality techniques, the virtual rolling system can complete equipment simulation, control simulation and management simulation. It not only can provide technical support to designing new rolling mills and transforming existing rolling mills, but also can explore optimum process parameters and control model of existing equipment in order to improve the quality and output of products. Its development direction is pointed out.

Key words: Computer simulation, Future prospects, Present development state, Virtual rolling technology