Research of Effect on Stress for Rolling Railway Axis by Multi-Wedge Synchrostep

Multi-wegde synchrostep rolling by cross-wedge rolling is one of the most anvanced methods that can form rolling railway axis.The rolling quality main lies on inner transversal stress and shearing stress of rolling workpiece.Based on the rotated theory of multi-wegde rolling,through using Ansys/Ls-Dyna FEM software,multi-wegde synchrostep rolling railway axis by cross-wedge rolling was simulated.It was systemically researched that technics parameters effect on transversal stress and shearing stress.In the meantime,the calculating model was verified by experiment.It is obtained that the law of technics parameters has effect on rolling railway axis by multi-wegde synchrostep cross-wedge rolling.These conclusions can provide scientific basis for multi-wegde synchrostep rolling railway axis by cross-wedge rolling and rolling better quality.