等温成形是超硬铝合金等难变形材料复杂构件的重要成形技术,其锻件具有精度高,成形载荷小,组织均匀一致,力学性能优的特点。采用数值模拟对一种复杂壳体零件的等温成形工艺进行了优化。为了保证模具型腔有足够的金属充填,通过预成形工序使几个较难成形的凸台处预先聚料,解决了锻件充不满和折叠缺陷问题。根据优化后的工艺,进行了工程试验。经过预锻和终锻后,壳体等温锻件充填饱满,外表面没有出现裂纹、折迭等缺陷。经检测,壳体锻件的尺寸、表面质量等完全满足产品的技术要求。 Isothermal forming is an important forming technique for complex components such as super-hard aluminum alloy and other difficult-to-deformable materials. Its forging has the characteristics of high precision, small forming load, uniform organization and excellent mechanical properties. The isothermal forming process of a complex shell part was optimized using numerical simulations. In order to ensure that the mold cavity has sufficient metal filling, several pre-shaped bulges are pre-polymerized through the pre-forming process, which solves the problems of dissatisfaction and folding of the forging. According to the optimized process, a project test was carried out. After pre-forging and final forging, the shell isothermal forging filling full, no cracks on the outer surface, folding and other defects. After testing, the size of the shell forgings, the surface quality to fully meet the technical requirements of the product.