Abstract: The rigid-plastic finite element method for a slightly compressible material is employed to analyze deformation, configuration and fields of velocity, strain and temperature in hot cross piercing process. Under the certain technical conditions, such as roller shape, feed angle, piercing gorge size and plug advance, some technical problems in finite element model are resolved. The metal flow in front of the plug point is determined by this method in field of velocity and is checked by experimental sample. It is proved that the simulation for the piercing process is reasonable, and the model can be used to other cross rolling processes.

Key words: Cross piercing, Finite element method, Simulation