Analysis on and Optimization of Defects during Rolling and Forming of Large Thin-walled TC4 Special-shaped Rings
Exploring the material flow laws and the causes of defects in the ring rolling process of large thin-walled TC4 special shaped ring parts is the key foundation for realizing their formation integration.A combination of simulation and orthogonal test is used to study the effects of different sizes of blanks,main roll rotating speed and core roll feeding speed on cavity filling.The results show that when the unfilled defect area is the optimization target,the range results show that the inner and outer diameter slopes have the greatest influence on the defect area,followed by the outer diameter groove depth angle and the main roll rotating speed,and the core roll feeding speed has the least influence on the defect area.After simulation,the minimum defect area is 28 mm2,through the preferred process parameters for the actual production test,the actual special-shaped ring rolling and forming results and the simulation results of the error is controlled within 10%,the preferred process parameters effectively make the defect area reduced.The study can provide a basis for the optimization of the formation of large thin-walled TC4 special-shaped ring parts.
large thin-wallTC4 special-shaped ringfinite element simulationorthogonal testoptimization
万方数据
维普
