Numerical Simulation of Two-roll Skew-rolling Piercing for Large-scale Thin-walled Magnesium Alloy Seamless Tubes
At present,the three-roll cross-rolled perforated large-sized thin-walled magnesium alloy tubes are prone to form tail triangles.Therefore,a method of large-size AZ31 magnesium alloy thin-walled seamless pipes produced with a billet diameter of 110 mm by using two cone rolls was proposed.The principle of two-roll and three-roll cross-rolling piercing was analyzed.According to the characteristics of magnesium alloy materials,the corresponding deformation process parameters were formulated,and the whole process was numerically simulated by Deform-3D finite element software.The results of equivalent strain,rolling speed,and equivalent stress were analyzed.The simulation results show that the tube shape is uniform and the tail section is round.
NETL
NSTL
万方数据
