METHOD AND APPARATUS FOR MONITORING GRAIN GROWTH DURING ANNEALING HEAT TREATMENT

摘要

PURPOSE: The crystal growth monitoring method at the annealing process and apparatus thereof monitors the grain size to the real-time. The excessive grain growth is prevented in the thermal process for the residual stress removal. CONSTITUTION: The crystal growth activation energy of specimen is inputted to controller(S10). The cumulative energy value predicting the grain size is calculated and it is monitored in controller(S20). The grain size of specimen and the monitored cumulative energy value is synchronized in controller. The grain size of specimen is on a real time basis monitored(S30).