为了解释陶瓷粉末件低密度缺陷的形成原因,借助有限元分析软件MSC.MARC对陶瓷粉末件的冷等静压(CIP)成形过程进行了有限元数值模拟,从数值计算的角度给出了成形过程中粉体的应变分布、密度分布规律,并提出了改善陶瓷粉末件低密度现象的对策.研究结果表明:在CIP成形过程中芯棒顶端倒角处变形受到抑制,等效应变最大,相对密度最小,出现变形不均匀现象;粉末构件的几何形状、尺寸、模具形状对低密度区域的形成有较大影响.
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