Distributions of Temperature and Stress During Ingot Heating when Charging at High Temperature
The heat preservation time when charging at high temperature was determined based the temperature rising situation of ingot surface;the heating process during charging at high temperature was simulated based on the software,DEFORM-3D,and the distributions of temperature and stress fields were obtained.The results show that the heating time can be reduced effectively by high temperature charging;the three tensile stresses increases due to the fast temperature rising speed when charging at high temperature,hence to an increase in the temperature difference between the surface and center of ingot,but the decrease of temperature difference is fast.The experimental results conform well to the simulation one,which proves that the simulation model is reliable and reasonable.