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孔隙压实是钢锭加热自由锻造的主要目的之一。孔隙压实是静水压压力的时间积累和孔隙周围的有效应变造成的,而不是由于别的什么原因。这一点,通过应用刚塑性有限元法(RPFEM)作塑性变形数学分析,已经从定量上弄清楚了。根据应用刚塑性有限元法所做的这些分析得到的结果,已经导出一个公式,可以用来定量预测锻造过程孔隙被压缩的程度。有了这个公式,就有可能评定各种锻造过程(如平砧锻造和V型砧锻造)的孔隙压实状
Pore compaction is one of the main purposes of free-forging ingot heating. Pore compaction is the result of hydrostatic pressure buildup over time and effective strain around the pores, not for any other reason. This point has been quantitatively clarified by applying the plastic finite element method (RPFEM) to plastic deformation mathematical analysis. Based on the results of these analyzes using the rigid-plastic finite element method, a formula has been derived that can be used to quantitatively predict the extent to which pores are forged during forging. With this formula, it is possible to assess the porosity of a variety of forging processes such as flat anvil forging and V-forged forging