Numerical simulation of hot extruding superalloy Incone1690（IN690） at high temperature and high speed was conducted by the finite element method（FEM） to present the change of temperature field

strain field

stress field and extruding force in deformed materials at different processing conditions. The results show that

with increasing in extruding speed

the deformation un-uniformity and the temperature-increment of the initial billets are increased

and with increasing in temperature

the maximum equivalent stress is reduced obviously with the improvement of distribution uniformity

leading to the improvement of the plasticity. The extruding force is firstly increased and then increased with the extruding speed increase

and it is decreased with the extruding temperature increase. The relative error between the simulated result and the experimental one is lower than 7.3%. The desirable processing parameters are as follows:extruding speed of 110～120 mm/s and extruding temperature of 1 200 ℃.