针对单工序锻造在终锻之前一般都需要以镦粗进行预制坯的实际情况 ,通过刚粘塑性有限元法 ,以实际锻件超出预定直线部分的体积为目标函数 ,以镦粗的压下量为优化设计变量 ,采用黄金分割法对其预制坯工艺优化设计进行了研究。并对一轴对称锻件的镦粗压下量进行了优化设计 ,优化取得了明显的效果 For the single-process forging in the final forging before the general need for upsetting the actual situation of the preform, just by viscoplastic finite element method, the actual forging beyond the predetermined straight part of the volume as the objective function to the upsetting reduction of Optimize the design variables, using golden section method to optimize the design of preform research. And the amount of upsetting of the symmetrical forging of an axis was optimized, and the obvious effect was achieved