通过采用物理模拟和数值模拟相结合的方法,研究了大型封头终锻成形过程中塑性成形规律和影响因素,掌握了型砧对于变形以及产生裂纹的影响作用效果。实验结果表明:增大上型砧的倒角有利于减弱心部压实效果,凹型下砧有利于减少锻件下表面裂纹和内部夹杂性裂纹的产生。研究结果对于制定合理的终锻成形工艺具有支撑作用。 Through the combination of physical simulation and numerical simulation, the rules of plastic forming and the influencing factors in the final forging process are studied, and the effects of the type anvil on the deformation and the crack generation are studied. The experimental results show that increasing the chamfer angle of the upper anvil can reduce the core compaction effect, and the concave anvil can reduce the cracks on the lower surface of the forging and the internal inclusional cracks. The research results have a supportive role in formulating a reasonable final forging forming process.