借助于数值模拟技术研究了TC4马蹄形接头等温锻造成形过程,分析了马蹄形接头成形过程中金属流动特点和凸模载荷随时间变化的特点。结果表明:马蹄形接头A部位先于B部位成形。金属以反向流动为主成形A部位时,凸模载荷增加缓慢;以正向流动为主成形B部位时,凸模载荷迅速增加至峰值,并发生波动。整个成形过程中金属流动顺利,未预测到成形缺陷,工艺可行。 The isothermal forging process of TC4 horseshoe joint was studied by means of numerical simulation technology. The characteristics of metal flow and punch load with time were analyzed during the forming of horseshoe joint. The results show that the horseshoe joint A part is formed before the B part. When the metal is mainly formed in reverse flow, the punch load increases slowly. When the part B is mainly formed by the forward flow, the punch load rapidly increases to the peak value and fluctuates. The metal flow smoothly throughout the forming process, forming defects are not predicted, the process is feasible.