FEM Analysis for Integrated Stress of Dies During Hot Forging Process WANG Hua chang 1,LONG Man lin 1,HU Jin huan 1,LIU De xue 2,WANG Kai feng 1,PAN Cheng gang 1 (1.School of Materials Science and Technology, WUT, Wuhan 430070, China; 2 School of Materials Science and Technology, Gansu University of Technology, Lanzhou 730050, China)FEA(finite element analysis) of transient temperature, stress in hot forging process has been carried out. The dynamical simulation about the change of integrated stress is done and distributing regular changed by time and space of temperature field and stress field are given. The result qualitatively agrees with the practice.FEM; forge; die forging; integrated stress