论文部分内容阅读
扭压成形工艺和一般镦粗相比有许多优点［１～３］。考虑到成形过程中温度与变形间的热力耦合效应，作者运用刚粘塑性有限元方法，详细分析了高温下圆柱体的扭压成形的变形规律。结果表明：扭压成形能降低成形压力，促使变形均匀，增加变形量；成形的温度、摩擦和变形速度对整个变形过程都产生较大的影响。
There are many advantages compared to normal upsetting [1-3]. Taking into account the thermal coupling effect between temperature and deformation in the forming process, the author uses the rigid viscoplastic finite element method to analyze the deformation law of cylinder under high temperature in detail. The results show that the forming pressure can reduce the forming pressure, promote the uniform deformation and increase the deformation. The forming temperature, friction and deformation speed have a great influence on the whole deformation process.