压水堆核电站一回路主管道整体锻造技术越来越受到重视,特别是最复杂的凸台。通过Deform-3D软件对锻造过程进行了数值模拟,分析了锻造成形过程中坯料的等效应力、应变。结果表明:在凸台和主管道连接处的等效应变最大,易形成开裂。 The main forging technology of primary circuit of PWR nuclear power plant is paid more and more attention, especially the most complicated bosses. The forging process was simulated by Deform-3D software, and the equivalent stress and strain of blank during forging process were analyzed. The results show that the maximum equivalent strain at the connection between the boss and the main pipe is easy to crack.