大型饼形锻件成形工艺研究

采用“镦粗”和“镦粗＋旋转压下”两种工艺方案完成了大型饼形锻件成形过程的数值模拟。模拟结果显示在镦粗工序后，采用双面旋转压下方式完成最终饼形锻件成形可以增加锻件上、下端面附近的变形量，缩小刚性变形区范围，有利于锻件内部晶粒细化，从而提高饼形锻件调质后的性能。

Research on Forming Process for Heavy Disk Forgings

Two kinds of process schemes ,“upsetting” and“upsetting ＋spinning”, can be used to complete the numerical simulation for forming process of heavy disk forgings .The simulation results indicate that double spinning af-ter upsetting for the last forming of disk forgings can increase the deformation near two end faces of forgings , and reduce the area of rigid deformation zone which can refine the grain size and improve the performance of disk forgings after quenching and tempering .