Numerical Simulation and Process Optimization of High Speed Railway Brake Unit Box Casting
The brake unit box of high-speed railway is an important supporting part of high-speed train,which directly affects the performance and safety of high-speed train.By using AnyCasting software,the filling,solidification and shrinking process of the box casting of the high-speed iron brake unit was numerically simulated,and the filling speed,filling temperature,solidification liquid phase and the distribution of shrinkage defects were obtained.It was found that the box casting of the high-speed iron brake unit had defects such as shrinkage porosity and shrinkage holes.Some technological measures such as improving the pouring system,changing the middle riser into a heating riser and increasing the feeding channel of the riser are put forward.The numerical simulation conducted by AnyCasting software again shows that the improved process can realize the stable and turbulent filling process of liquid iron in the box of the high-speed iron brake unit,moderate filling speed,no risk of sand washing,no flow interruption and no isolated liquid phase during the solidification process,and avoid the defects such as shrinkage hole and shrinkage porosity.The sample of the box casting was tested,and there were no defects inside,and the structure and performance met the standard requirements.
the brake unit boxcastingnumerical simulationprocess optimization
NETL
NSTL
万方数据
维普
