摘要
在分析环形锻件扩孔变形的基础上，设定了运动学允许的速度场，利用增量方法将非稳定变形转化为稳定变形．计算了扩孔过程的展宽量，理论计算与实验结果符合较好．
The peper introduces the production run of the circular forging and present situation of theory analysis for circular forging expand in and out nation. On the basis of analyzing deformation of the circular forging expend. permissible kinematic's velocity field is given and non-stable deformation is converted into stable deformation by means of increment method. The broaden of the expand Process is calculated. The theory calculation is better accord with the experiment results.
